viernes, 25 de septiembre de 2020

New Semilab SE-2000 Spectroscopic Ellipsometer at MIT.nano

In nanofabrication, it is important to characterize and understand the physical, mechanical, and chemical properties of the various thin-film materials used to build devices. Ellipsometry is a particularly valuable technique for non-destructive optical characterization of a wide variety of thin-film materials — such as semiconductors, dielectrics, polymers, and metals — as well as complex multilayered structures. By measuring the change in the light polarization upon interaction with the matter, information such as thickness, refractive index, dielectric permittivity, composition, and doping can be revealed.

To expand thin-film measurement capabilities available to its researchers, MIT.nano recently acquired a Semilab SE-2000 Spectroscopic Ellipsometer. The instrument has been installed and qualified in the third-floor clean room in Building 12, and is now available for training and use.

The Semilab ellipsometer will augment the MIT.nano clean room metrology capabilities by addressing the need for a broad spectral range (from 245 nm–1,700 nm), autofocus, automatic goniometer for incidence angle adjustment (20-90 degrees), and large-area (300 mm) automatic stage with mapping capabilities, according to Anna Osherov, assistant director of user services for Characterization.nano. 

“We’re delighted to add this tool to the growing set of instruments and equipment available to MIT.nano users,” she says. “We’re developing a powerful set of ex-situ and in-situ capabilities for characterization and metrology in our facilities, and ellipsometry is yet another fundamental technique that will advance research for many users.”

With Microspot optics and an optical camera for region-of-interest visualization, the instrument is able to uniformly assess samples ranging from pieces up to 300 mm wafers. The SE-2000 replaces the capabilities that had been provided by the decommissioned Tencor UV1280, which was located in the second-floor Integrated Circuits Laboratory in Building 39.

Semilab designs and manufactures metrology equipment for the characterization of semiconductor and photovoltaic materials, and for the R&D and manufacturing processes of semiconductor devices, flat-panel displays, and solar cells.

For more information about MIT.nano’s tools and instruments, visit nanousers.mit.edu.



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MIT researchers highlight the impacts of logjams in river restoration projects

Researchers at MIT have modeled how engineered and natural wood jams change river water levels, enabling an assessment of the trade-offs in flood risk and habitat creation for river restoration projects.

In a recent paper published in Geophysical Research Letters, researchers Elizabeth Follett ’09 PhD ’16, postdoc Isabella Schalko, and Donald and Martha Harleman Professor of Civil and Environmental Engineering Heidi Nepf detail their analysis of 584 experiments measuring the backwater rise induced by model logjams in an experimental flume. Schalko ran these experiments, with the hope of filling gaps of the previously understudied physical processes to better explain just how water flow is impacted by large, densely packed groups of logs and to better inform current and future flood risk as well as river restoration projects.

“We’ve been missing a way to describe the physical mechanisms by which large groups of wood pieces affect the river water level,” says Follett, who is the lead author on the paper and a Royal Academy of Engineering Research Fellow at Cardiff University. “Our work allows researchers to characterize structural properties of wood jams from field measurements, by measuring the river water level up- and downstream of the jam and applying our new model.”

The team hopes that the structural metrics will be useful for a wide range of scientists and engineers. The paper has also had an unintended benefit: bridging gaps between research groups.

“What I like most about the paper is that it brings together two research communities; those who look more at in-stream wood, and those more interested in canopy shear flows,” says Schalko.

The findings could have significant implications for government or non-profit organizations engaging in restoration projects. According to the researchers, there is growing interest all over the world in river restoration projects; up until now, it was understood that adding wood to rivers was good for restoration because wood increases flow heterogeneity by increasing water depth. Despite the growing popularity of wood as a solution, the physical processes have not been studied in depth and are not always accounted for in flood prediction models.

“Flood risk and river restoration projects have attracted recent investments, but up to now it has been difficult to include the effect of wood in flood models to improve the design and assessment of these projects,” says Follett. “This is a first step in the direction of being able to theoretically describe how wood alters the flow conditions in a river.” When joined with existing information, the new data on wood jams should better inform flood risk and river restoration efforts in the future.



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Ibrahim Cissé, Ruth Lehmann, and Silvi Rouskin awarded 2021 Vilcek Prize

Associate professor of physics and biology Ibrahim Cissé, professor of biology and Whitehead Institute Director Ruth Lehmann, and Andria and Paul Heafy Whitehead Fellow Silvi Rouskin have been awarded 2021 Vilcek Prizes. The Vilcek Foundation was established in 2000 by Jan and Marica Vilcek, who emigrated from the former Czechoslovakia. Their prizes honor the outstanding contributions of immigrants in the sciences and the arts. Prizewinners will be honored in an April ceremony.

“The 2021 awards celebrate the diversity of immigrant contributions to biomedical research, to filmmaking, and to society,” Vilcek Foundation President Rick Kinsel said in a press release. “In recognizing foreign-born scientists and dynamic leaders in the arts and in public service, we seek to expand the public dialogue about the intellectual value and artistic diversity that immigration provides the United States.”

Ibrahim Cissé

A faculty member in the departments of Physics and Biology, Ibrahim Cissé received the Vilcek Prize for Creative Promise in Biomedical Science for using super-resolution biological imaging to directly visualize the dynamic nature of gene expression in living cells. 

Born in Niger, Cissé assumed he would be a lawyer like his father, but he soon became inspired by the science he saw in American films. His high school did not have a laboratory, so he completed high school two years early, enrolled in an English as a Second Language program at the University of North Carolina at Wilmington, and enrolled in Durham Technical Community College before transferring to North Carolina Central University, a historically Black college that was notable for its undergraduate science and mathematics research programs.

Following graduation, he spent a summer at Princeton University working in condensed matter physics. There, Cissé was confronted by physics professor Paul Chaikin with a question about elliptical geometry and particle density, using M&M’s candies. Cissé’s creative problem-solving enabled him and his fellow researchers to develop experiments for observing and quantifying their results, and they coauthored a paper that was published in Science magazine.

For graduate studies, he was at the University of Illinois at Urbana-Champaign, and earned a PhD under the supervision of single-molecule biophysicist Taekjip Ha, who was leading research in high-resolution, single-biomolecule imaging technology. Cissé’s interest in using physics to understand the physical processes in biology led him to a post-doctoral fellowship at École Normale Supérieure Paris. He showed that RNA polymerase II, a critical protein in gene expression, forms fleeting (“transient”) clusters with similar molecules in order to transcribe DNA into RNA. He joined the Howard Hughes Medical Institute’s Janelia Research Campus as a research specialist in the Transcription Imaging Consortium, before joining the MIT Department of Physics in 2014, and was recently granted tenure and a joint appointment in biology.

The Cissé Laboratory focuses on the development of high-resolution microscopy techniques to examine the behavior of single biomolecules in living cells, and his own research focuses on the process by which DNA gets decoded into RNA. His Time-Correlated Photoactivated Localization Microscopy (tcPALM) technique of imaging was able to peer inside living cells to study the dynamics of protein clusters. This discovery has led to breakthroughs in viewing the clustering and droplet-like behavior of RNA polymerase II during RNA transcription. In an interview with MIT News, he stated, “It’s becoming clearer that physics may be just as important as biology for understanding how cells work.”

Other national and international awards include the Young Fluorescence Investigator Award from the American Biophysical Society, the Pew Biomedical Scholars, and the National Institute of Health Director’s New Innovator Award. He is a Next Einstein Forum fellow and was listed in Science News’ Scientists to Watch.

Ruth Lehmann

Professor of biology and director of Whitehead Institute for Biomedical Research Ruth Lehmann received the Vilcek Prize in Biomedical Science. As a developmental and cell biologist, she investigates the biology of germ cells, which give rise to sperm and eggs.

The daughter of a teacher and an engineer, Lehmann was captivated by science from a young age. She grew up in Cologne, Germany, and majored in biology as an undergraduate at the University of Tübingen. Her Fulbright Fellowship in 1977 brought her to the University of Washington in Seattle, and served as the catalyst that spurred her career using fruit flies to understand germ cell biology. She went on to train with renowned fruit fly geneticists Gerold Schubiger and Jose Campos-Ortega, learning classical developmental biology and electron microscopy techniques. She then performed her doctoral research with future Nobel laureate Christiane Nüsslein-Volhard at the Max Planck Institute for Developmental Genetics. There, Lehmann probed the maternal genes that influence fruit fly embryo development — studies that ignited her fervor for germ cell research. Later, as a postdoc at the Medical Research Council Laboratory of Molecular Biology in Cambridge, England, she worked with Michael Wilcox and Peter Lawrence to pinpoint the molecules that control the fate of these vital cells.

Lehmann arrived at MIT in 1988, where she served as a professor and member of the Whitehead Institute for eight years. “Being an immigrant in the United States was exhilarating,” she says, “because of the openness to new ideas and the encouragement to take risks and be creative.”

She was recruited to the Skirball Institute at New York University (NYU), where she was appointed as the institute’s director, as well as the director of the Helen and Martin Kimmel Center for Stem Cell Biology, and chair of the Department of Cell Biology at NYU’s Langone Medical Center.

Lehmann returned to MIT this summer to launch the Lehmann Lab and become director of the Whitehead Institute in July.

Although she began her career focused on the formation and maintenance of germ cells, Lehmann has since revealed key insights into their migration — and more recently into mitochondrial inheritance. Her influential work regarding the development and behavior of these essential cells has also enriched related fields including stem cell biology, lipid biology, and DNA repair.

“It means so much to me to be recognized as an immigrant and a researcher,” says Lehmann. “In these days, immigrants don’t feel as welcomed as I did when I came to this country. For me, coming to the U.S. meant to be given a chance to live the dream of being a scientist. This allowed me to explore the fascinating biology of the germ line together with a group of incredibly talented trainees and staff, many of them immigrants themselves, and I share this wonderful recognition with them.”

Lehmann’s accolades include membership to the National Academy of Sciences, American Academy of Arts and Sciences, and European Molecular Biology Organization, as well as the Conklin Medal from the Society for Developmental Biology, the Porter Award from the American Society for Cell Biology, and the Lifetime Achievement Award from the German Society for Developmental Biology.

Silvi Rouskin

The Andria and Paul Heafy Whitehead Fellow at the Whitehead Institute, Silvi Rouskin received the Vilcek Prize for Creative Promise in Biomedical Science for developing methods to unravel the shapes of RNA molecules inside cells — aiding the potential development of RNA-based therapeutics.

The daughter of rock musicians in early-1980s communist Bulgaria, she grew up fascinated with the geometry of the flora and fauna around her. At 10, she started saving her lunch money to buy a miniature telescope. At 15 she knew that her best chances to study science would be in the United States, and so she joined a student exchange program in Idaho.

“I was not only allowed but encouraged to question my superiors,” she recalls. “I felt free to speak my mind, and often debated with my teachers.” Rouskin completed her GED and studied physics and biochemistry at the Florida Institute of Technology at 16.

As a staff research associate in the laboratory of Joseph DeRisi at the University of California at San Francisco, Rouskin first began studying RNA, using microarrays to detect and track viral infection. She opted to stay at UCSF to pursue her PhD in biochemistry and molecular biology.

She joined the Whitehead Institute in 2015, and established the Rouskin Lab to focus on the structure of RNA molecules, including viruses, and to determine how structure influences RNA processing and gene expression in HIV-1 and other viruses. Most recently, Rouskin uncovered the higher-order structure of the RNA genome of SARS-CoV2 — the virus that causes Covid-19  — in infected cells at high resolution.

“The goal of my own lab has been to perform basic RNA research with clear therapeutic applications and a particular focus on the vulnerabilities of RNA viruses,” says Rouskin. “I want my research to matter for medicine, and so I always approach my research with a cognizance of how my work can directly benefit people.”

Rouskin has also received the Harold M. Weintraub Graduate Student Award for outstanding achievements in biological sciences and the Burroughs Wellcome Fund Career Award at the Scientific Interface.



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Expanding access to the world’s top medical minds

Earlier this year, a little girl was struggling with a neurological condition that caused her to have 20 to 30 seizures a day. Her parents were working with a neurologist on a treatment plan, but they wanted a second opinion. Rather than trying to find a far-away, top-rated neurologist to get an appointment with, they used the services of InfiniteMD, a company that virtually connects patients and their families with some of the top medical specialists in the world.

Through the service, a leading pediatric neurologist reviewed a summary of the girl’s medical records and advised a different medication. Today, the girl is nearly seizure-free and is being weaned off some of her previous treatments. The parents report their daughter is now regaining the ability to eat soft food and is laughing and kicking playfully during bath times.

The breakthrough shows the power of broadening access to the world’s leading medical minds. That’s what InfiniteMD has been doing for the last four years, often with dramatic results.

The company combines a network of top physicians with a platform that pairs patients with specialists, organizes patient files for review, and facilitates connections via video chats or written reports. The consultations can help patients with treatment plans, diagnoses, test results, and more.

“Second opinions and expert consults are inherently complex,” InfiniteMD co-founder and Chief Operating Officer Christopher Lee PhD ’18 says. “Someone has a serious diagnosis or disease, then they have 30 minutes or 60 minutes to share everything about their care with a world-leading expert. In order for [the specialist] to be brought onto the same page and create a valuable interaction, there are a million moving parts that need to come together.”

Today, nearly 5 million people have access to InfiniteMD’s platform, primarily through their employers. The company says that over 70 percent of its consultations lead to a revised treatment plan, and more than a fifth of consultations lead to a revised or corrected diagnosis.

As Covid-19 has increased the demand for telehealth services, InfiniteMD’s team has taken steps to bolster its offerings in hopes of further improving access to the world’s top physicians. In August, the company agreed to be acquired by ConsumerMedical, a large organization that helps guide patients through the health care system, among other patient advocacy work.

“Right now, we basically say to patients, for example, ‘You shouldn’t get this surgery, you should do physical therapy instead,” InfiniteMD co-founder and Chief Executive Officer Babak Movassaghi MBA ’14 says. “But then what? Where should patients go? ConsumerMedical has an algorithm to connect you with the right doctor. They can make an appointment for you, and follow up with you, so [the acquisition] just made sense.”

A problem that’s personal

Movassaghi had an unconventional path to entrepreneurship, having first enjoyed a 13-year football career in NFL Europe before studying theoretical physics as a graduate student in his home country of Germany. After earning his PhD in medical physics from the University of Utrecht in 2005, he began a career in the health care industry. But a passion for entrepreneurship brought him to MIT, first to participate in the MIT Sloan School of Management’s Entrepreneurial Development Program (EDP) in 2011, then as part of the Sloan Fellows program two years later.

While Movassaghi was at Sloan, Lee was beginning his PhD in the Harvard-MIT Program in Health Sciences and Technology. The two students decided to team up for an MIT Hacking Medicine event, and went on to pursue various startup ideas throughout their time at MIT.

In 2015, Movassaghi’s close relative in Europe was diagnosed with cancer. He asked for their medical records, translated them from German to English, and had a contact at the Dana-Farber Cancer Institute take a look. The experience sparked an idea that resonated with both founders.

“We have immigrant backgrounds, and we’ve both been lucky to be educated, and we’ve both been very keen to playing a role for our family and extended family as health care advocates,” says Lee, who studied biomedical engineering before coming to MIT. “We realized this isn’t just a problem that affects us, it affects everyone around the world.”

Working on the idea as part of MIT’s Healthcare Ventures course, the founders pieced together existing services like Zoom to make a prototype. They also brought on a third co-founder, Harvard Medical School trained physician Liz Kwo, who was crucial in building the company’s early network of physicians. Kwo initially served as CEO but left the company in 2018.

Although the founders initially focused on helping international patients, they began expanding access to their service in the U.S. through partnerships with large employers and health insurers.

Today about 80 percent of InfiniteMD’s cases come from the U.S. The company’s network of more than 2,400 medical specialists were chosen based on their affiliations with leading hospitals, their experience, and research publications.

InfiniteMD’s software condenses disparate patient medical records into two-page summaries for doctors that can include things like MRIs and ultrasound images. The company can also facilitate collaboration between experts in different medical fields to handle complex cases.

When it comes to connecting patients and doctors, InfiniteMD can schedule live video consultations or, depending on patient preference, the two sides can communicate via asynchronous video snippets or messaging.

Overall, the company has focused on streamlining the telemedicine experience for patients and doctors without losing the value of expert consultations.

“For the patients, it couldn’t be more simple: It’s basically, ‘Hi, I have this, these are my questions,” Lee says. “On the back end, we have all these different roles for different people to allow thousands of these cases to be managed. Physicians also want it to be super simple. They’re like patients — they barely remember their log-ins. So we made an interface that’s also super easy for the physicians.”

Making every medical expert local

Movassaghi says InfiniteMD’s services have helped people avoid thousands of unnecessary surgeries in the U.S. over the years. One woman, a former Olympic skier, was scheduled to have her leg amputated before a second opinion facilitated by InfiniteMD led to a less life-altering procedure. Today the woman sends the founders pictures of herself hiking.

Covid-19 has changed things dramatically for InfiniteMD as more people prefer virtual consultations instead of hospital visits. With the ConsumerMedical acquisition, the founders, who will be joining the larger company, say they can move from a point solution to a part of a larger service to help patients get the most out of the health care system.

“With Covid-19, we’ve proven a lot of things are possible from home, and so there’s going to be an increase in virtual offerings,” Lee says. “Everything from physical therapy to wellness to simple checkups, all of these are headed in the direction of virtual. The beautiful thing about InfiniteMD is we’re agnostic in terms of what information is delivered. We’re really in the information business, so all of those offerings can be slotted into the IMD platform easily.”



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Provably exact artificial intelligence for nuclear and particle physics

The Standard Model of particle physics describes all the known elementary particles and three of the four fundamental forces governing the universe; everything except gravity. These three forces — electromagnetic, strong, and weak — govern how particles are formed, how they interact, and how the particles decay.

Studying particle and nuclear physics within this framework, however, is difficult, and relies on large-scale numerical studies. For example, many aspects of the strong force require numerically simulating the dynamics at the scale of 1/10th to 1/100th the size of a proton to answer fundamental questions about the properties of protons, neutrons, and nuclei.

“Ultimately, we are computationally limited in the study of proton and nuclear structure using lattice field theory,” says assistant professor of physics Phiala Shanahan. “There are a lot of interesting problems that we know how to address in principle, but we just don’t have enough compute, even though we run on the largest supercomputers in the world.”

To push past these limitations, Shanahan leads a group that combines theoretical physics with machine learning models. In their paper “Equivariant flow-based sampling for lattice gauge theory,” published this month in Physical Review Letters, they show how incorporating the symmetries of physics theories into machine learning and artificial intelligence architectures can provide much faster algorithms for theoretical physics. 

“We are using machine learning not to analyze large amounts of data, but to accelerate first-principles theory in a way which doesn’t compromise the rigor of the approach,” Shanahan says. “This particular work demonstrated that we can build machine learning architectures with some of the symmetries of the Standard Model of particle and nuclear physics built in, and accelerate the sampling problem we are targeting by orders of magnitude.” 

Shanahan launched the project with MIT graduate student Gurtej Kanwar and with Michael Albergo, who is now at NYU. The project expanded to include Center for Theoretical Physics postdocs Daniel Hackett and Denis Boyda, NYU Professor Kyle Cranmer, and physics-savvy machine-learning scientists at Google Deep Mind, Sébastien Racanière and Danilo Jimenez Rezende.

This month’s paper is one in a series aimed at enabling studies in theoretical physics that are currently computationally intractable. “Our aim is to develop new algorithms for a key component of numerical calculations in theoretical physics,” says Kanwar. “These calculations inform us about the inner workings of the Standard Model of particle physics, our most fundamental theory of matter. Such calculations are of vital importance to compare against results from particle physics experiments, such as the Large Hadron Collider at CERN, both to constrain the model more precisely and to discover where the model breaks down and must be extended to something even more fundamental.”

The only known systematically controllable method of studying the Standard Model of particle physics in the nonperturbative regime is based on a sampling of snapshots of quantum fluctuations in the vacuum. By measuring properties of these fluctuations, once can infer properties of the particles and collisions of interest.

This technique comes with challenges, Kanwar explains. “This sampling is expensive, and we are looking to use physics-inspired machine learning techniques to draw samples far more efficiently,” he says. “Machine learning has already made great strides on generating images, including, for example, recent work by NVIDIA to generate images of faces 'dreamed up' by neural networks. Thinking of these snapshots of the vacuum as images, we think it's quite natural to turn to similar methods for our problem.”

Adds Shanahan, “In our approach to sampling these quantum snapshots, we optimize a model that takes us from a space that is easy to sample to the target space: given a trained model, sampling is then efficient since you just need to take independent samples in the easy-to-sample space, and transform them via the learned model.”

In particular, the group has introduced a framework for building machine-learning models that exactly respect a class of symmetries, called "gauge symmetries," crucial for studying high-energy physics.

As a proof of principle, Shanahan and colleagues used their framework to train machine-learning models to simulate a theory in two dimensions, resulting in orders-of-magnitude efficiency gains over state-of-the-art techniques and more precise predictions from the theory. This paves the way for significantly accelerated research into the fundamental forces of nature using physics-informed machine learning.

The group’s first few papers as a collaboration discussed applying the machine-learning technique to a simple lattice field theory, and developed this class of approaches on compact, connected manifolds which describe the more complicated field theories of the Standard Model. Now they are working to scale the techniques to state-of-the-art calculations.

“I think we have shown over the past year that there is a lot of promise in combining physics knowledge with machine learning techniques,” says Kanwar. “We are actively thinking about how to tackle the remaining barriers in the way of performing full-scale simulations using our approach. I hope to see the first application of these methods to calculations at scale in the next couple of years. If we are able to overcome the last few obstacles, this promises to extend what we can do with limited resources, and I dream of performing calculations soon that give us novel insights into what lies beyond our best understanding of physics today.”

This idea of physics-informed machine learning is also known by the team as “ab-initio AI,” a key theme of the recently launched MIT-based National Science Foundation Institute for Artificial Intelligence and Fundamental Interactions (IAIFI), where Shanahan is research coordinator for physics theory.

Led by the Laboratory for Nuclear Science, the IAIFI is comprised of both physics and AI researchers at MIT and Harvard, Northeastern, and Tufts universities.

“Our collaboration is a great example of the spirit of IAIFI, with a team with diverse backgrounds coming together to advance AI and physics simultaneously” says Shanahan. As well as research like Shanahan’s targeting physics theory, IAIFI researchers are also working to use AI to enhance the scientific potential of various facilities, including the Large Hadron Collider and the Laser Interferometer Gravity Wave Observatory, and to advance AI itself. 



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jueves, 24 de septiembre de 2020

Saving Iñupiaq

MIT graduate student Annauk Denise Olin didn’t grow up speaking Iñupiaq, the language of her Alaska Native community. Nevertheless, she’s raising her son in the language — thanks in part to the grounding in linguistics she is gaining through the MIT Indigenous Language Initiative (MITILI), a master’s program for members of communities whose languages are threatened.

“The beauty of the Iñupiaq language is that the perspective and the wisdom of my ancestors has been preserved in the language,” says Olin, who is developing a curriculum for teaching Iñupiaq through MITILI. “If we lose our language, we lose our ability to see into the minds of the people who were able to thrive — for millennia — in one of the harshest climates in the world.”

That climate has been rapidly changing in the last two decades, with disastrous consequences for Olin’s family’s village, Shishmaref. A small community of about 600 people, Shishmaref is perched on tiny Sarichef Island just south of the Arctic Circle — a place where reduced sea ice, melting permafrost, and other impacts of climate change have come to threaten the community’s very existence. The effect of global climate change on Shishmaref is seen as among “the most dramatic in the world.”

“We’ve had several homes fall into the ocean. We’ve lost hundreds and hundreds of feet of land on our island. Historically, we would expect sea ice to form around our island in September or October. In the last few years, we had winters where sea ice would not form until January. This should serve as a warning to the rest of the world,” says Annauk, noting that the village has sought federal help to move to a new location — so far in vain.

Navigating climate change in Shishmaref

Helping her community to navigate the huge challenges presented by climate change is a key motivator for Olin, who started learning the Iñupiaq language intensively in 2016. At the time, she was working full time at the Alaska Institute for Justice (AIJ), a nonprofit dedicated to protecting the human rights of all Alaskans. As the research director of the AIJ’s climate change research and policy center, she worked with 15 Alaska Native villages (including Shishmaref) to begin developing a community-led relocation governance framework.

She says that language issues can present a barrier to such projects because elders in Alaska Native communities are not always fluent and literate in English, and the government rarely communicates in Iñupiaq. In fact, just this past January, Olin and members of the native village of Shishmaref partnered with the Alaska Public Research Interest Group to help produce census materials in Iñupiaq to fill this gap.

“Alaska has been historically underrepresented in the census,” she says. “We created public service announcements with speakers of Alaska Native languages to get more Alaska Native people to participate in the census so we can get adequate funding for our communities.”
 
A language shaped by the Arctic

Olin began teaching Iñupiaq after just one year of study at the Alaska Native Heritage Center in Anchorage. “Teaching and learning a language at the same time is very challenging and time-consuming, but it's common for second-language learners of endangered languages,” she says. One thing she’s learned so far is that Iñupiaq has almost 100 different terms for ice, but not for all of the conditions that people see today in Alaska; essentially, words fail to convey the devastation that climate change has wrought on the Arctic landscape.

“The Iñupiaq language has a complex and robust lexicon related to ice conditions in part because it is linked to our survival. If you’re out hunting and you aren’t able to describe to your hunting partner whether the ice is stable enough, it could cost your lives,” she says. “With climate change, some elders don’t have in their vocabulary words to describe how the ice is changing, so I think what’s important in the future is for us to be able to adapt the language to be able to describe these changing conditions exactly.”

For Olin, that means there need to be more young Iñupiaq speakers. “We need resources to teach in the language so that we have an upcoming generation of speakers even after our beloved elders pass on,” she said, noting that she is hoping her efforts will help undo the damage done by missionaries and the U.S. government, which for more than 100 years forced Iñupiat children to speak English in school.

A foundation in linguistics

Olin is beginning this work at home by speaking Iñupiaq to her son. “When I speak English to my son, it feels like a watered-down version of love, but when I speak Iñupiaq to him, the connection I feel with him is much stronger and intimate.”

To ensure that she is using the language properly, she is working with a mentor, native speaker Edna Ahgeak MacLean, a former faculty member at the University of Alaska Fairbanks and former president of Iḷisaġvik College. MacLean, who has produced both an Iñupiaq dictionary and a grammar, has helped Olin to script conversations so that she and her husband (a tribal member from another Alaska Native group, the Koyukon Athabascan, who speak Denaa’kke) can engage in simple activities — such as making pancakes — while conversing entirely in Iñupiaq.

At the same time, Olin is developing a curriculum for teaching Iñupiaq through her work at MITILI. Inspired by the work of the late MIT Professor Ken Hale, who dedicated his career to the study and support of indigenous languages of the Americas and of Australia, MITILI is a two-year program that provides a full scholarship that covers tuition, fees and health insurance, plus a stipend.

Olin is taking linguistics classes and working with her MIT advisor, Professor Norvin Richards, to gain an understanding of phonology, syntax, and language acquisition. “Some of the critical materials my mentor has written use many linguistic terms and concepts,” she says. “It has made a huge difference to be able to understand what tools are available to break down a lot of these linguistics-heavy resources.”

For example, Richards has helped Olin better understand how to combine morphemes, the smallest units of meaning in a language, to create words. “There are complicated rules that must be followed and practiced to correctly string morphemes together in Iñupiaq,” she says. For instance, in Iñupiaq it’s common for a morpheme to be attached to a word stem to indicate an action or state of being, a function usually performed in English by a verb.
 
Long-term survival of indigenous languages

“One of the things I appreciate about Annauk's work on Iñupiaq is how intellectually omnivorous she is,” says Richards, who has for decades worked to help revive endangered languages, including Wampanoag, a native language of Eastern Massachusetts, and Lardil, an Aboriginal language of Australia. “She's able to build on very careful work by the great Iñupiaq scholar Edna Ahgeak MacLean, but she's clearly determined to develop a language program that incorporates every technique that she thinks will work.”

Noting that the indigenous languages of the United States are all threatened, Richards says Olin is doing work that is critical to maintaining the world's linguistic diversity — learning Iñupiaq “through sheer force of will.” “She's tireless and dedicated, and very smart,” he says. “It's a real privilege to get to work with her.”

Supporting students like Olin has been the central mission of the MITILI since its founding in 2004. “The goals of the MITILI are ones that Ken Hale spoke and wrote about, eloquently and often,” Richards says. “One is to improve our understanding of the languages of the world, not by subjecting indigenous languages to study by outsiders, but by offering indigenous scholars ways to study their own languages with the tools that academic linguists have developed. And another, at least as important, is to try to help indigenous communities give their traditional languages their best chance of long-term survival.”

Olin’s ultimate goal is to fulfill this mission for her community, and her initial plan is to create an Iñupiaq mentor-apprenticeship program. “I’m also very interested in creating a school where the mission, leadership, and content is driven by Iñupiaq people and community — where we learn the language but also how to harvest and process traditional foods, sew traditional clothing, and most importantly, how to treat one another as human beings,” she says.

“As an Iñupiat, it is my responsibility to help provide a place where young people can have access to their identity and culture,” Olin says. “Many of our Iñupiat people are working to overcome historical trauma. Language is a powerful medicine that will help heal our communities.”



Story prepared by MIT SHASS Communications
Editorial and design director: Emily Hiestand
Senior writer: Kathryn O'Neil



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The meanings of masks

As The Washington Post has reported, “at the heart of the dismal U.S. coronavirus response” is a “fraught relationship with masks.” In this series of commentaries — inspired by an idea from associate professor of literature Sandy Alexandre — MIT faculty delve into the cultural, creative, and historic meanings of masks.

Drawing on discipline expertise, the professors offer new ways to think about, appreciate, and practice protective masking — currently a primary way to save lives and to contain the Covid-19 pandemic. The following are distilled excerpts from the commentaries to date; the full, image-rich Meanings of Masks series is available on the MIT SHASS website.  

In “The Expressive Power of Masks,” Sara Brown, an assistant professor and the director of design for MIT Theater Arts, writes that: “A performer in a mask is obscuring one identity in order to embody another one. Often, masks for performances have meanings that can be instantly understood by an audience that is familiar with the specific codes embedded in a particular theater form. In Japanese Noh theater, for instance, a mask worn by the principle character can indicate the character’s age and gender, and if the character is human or divine. Though the masks are static and cover the entire face, a skilled performer can invoke a range of expression through changing the mask’s orientation and relationship to light.”

Brown observes that “As we encourage masking at MIT, it’s worth considering how we too can utilize the expressive power of masks. I’m interested in hearing from MIT students,” she says, “for example, as to what affiliations or meanings they would want their masks to communicate. Colors, shape, and insignias, perhaps, could be used to communicate class year, major, residence hall, mood, etc. I trust our inventive students will have dozens of ideas for creating their own masks. And no matter what form it takes, wearing a mask during the pandemic shows that you care about protecting others.”

In “Masks as a Collective Cry for Justice,” Graham Jones, associate professor of anthropology, writes: “The mask is one of the most important human artifacts in all of anthropology. It is a tool of transformation that allows its wearers to transcend themselves, taking on timeless roles in ritual dramas, and as actors in a broader social drama. My favorite ritual masks in the world are those created by the First Nations of North America’s Northwest Coast. Used in dances that tell stories of creation, some of the masks have faces that dramatically transform when properly used in performance. The cloth face coverings that most of us now wear for purely practical, protective reasons may seem symbolically insipid in comparison to sacred masks used in ritual or performance. In practice, however, today's cloth masks have come to figure into everyday interaction rituals in ways that reflect central functions that anthropologists have long associated with masking.”

For me, Jones continues, “the iconic image of our times is of Black Lives Matter protestors of every race wearing masks emblazoned with the dying words of George Floyd: 'I can’t breathe.' These masks represent a symbolic condensation of the two public health crises that define this moment in American history: Covid-19, a disease that kills indiscriminately by attacking the respiratory system, and racism — a disease whose violence is most brutally felt in the choking-to-death of individual Black people at the hands of police. Such protest masks are a creative, expressive way of subsuming one’s identity within a social movement — and one’s voice within a collective cry for justice.”

In “Masks to Finesse an Archaic Political Order,” Jeffrey Ravel, professor of history, writes that in “Early Modern Europe (roughly 1400-1800 CE), masking most frequently occurred during Carnival, a period of raucous celebrations in February or early March that immediately preceded Lent, the six-week period of fasting and penance that culminated in Easter Sunday.” But, Ravel adds, “by the eighteenth century, mask-wearing among all classes and genders extended from Carnival through the summer, lasting half the year. Venetians not only wore masks during the week of Carnival, they continued to wear them through Lent and beyond at the theater, in gambling halls, in public marketplaces, and private homes. Foreign ambassadors and state officials, including the Doge (the head of the Venetian government), wore them during public ceremonies and private meetings and negotiations.”

Why would such extensive masking appeal in 18th-century Venice? Ravel explains that “the families who made up Venice’s patrician caste,” the minuscule percentage “who enjoyed the privilege to participate in the city-state’s political affairs,” had changed dramatically over the centuries, some growing richer and others declining until “by the eighteenth century, social realities did not correspond to the socio-political categories established five hundred years earlier.” Masking, Ravel says (citing fellow historian James H. Johnson) “had become a way to allow Venetians of all classes to intermingle socially, economically, and culturally for a large part of the year without calling into question the archaic political order, and it also allowed those from different socio-economic groupings in search of love to encounter each other in public spaces.”  

In “Masks as a Badge of Honor,” Eric Klopfer, head of the Comparative Media Studies/Writing program, writes: “My colleague in CMS/W, Scot Osterweil, often speaks about the ‘four freedoms of play.’ One of these freedoms is the ‘freedom to try on identities.’ Play gives us opportunities to pretend to be other people, creatures, or things. Sometimes we do this simply through imagination, but often we do this by changing our appearance. We play through costumes and masks in real life or through our choice of representations and apparel online, where avatars, or digital representations, can help us explore different identities. This can be empowering as it enables us to see ourselves in new ways; it can also be illuminating to see how others respond to such representations. 

“Masks clearly reveal something about mask wearers. Right now, they are being politicized in the U.S. and masks are conspicuous, so it is easy to use them as political identifiers if one chooses to do so. But we can and should change the meaning of this treasured item. In this pandemic era, what a mask really says is, 'I care about you.' That is an important and powerful message. It is one that we should champion and commend. We can also have fun with masks. They can be representations of our favorite characters in real life or fiction. They can take the place of funny and kitschy T-shirts. But the key to any of that is the understanding that, during a pandemic, the mask is a badge of honor, indicating the important role that you are playing in protecting the health of others during a crisis.”  

In “The Masks of New Possibilities,” Manduhai Buyandelger, an associate professor of anthropology, writes that “The resistance to wearing a mask for public health purposes in the United States reveals — in addition to political, racial, and gender problems — the degree to which Americans are accustomed to conditions and resources that are not easily accessible in other parts of the world. In Mongolia, where I grew up, a continental climate and high altitude make temporary face coverings or masks an essential part of everyday life. Wearing scarves to protect our faces from frostbite in sub-zero winters or from summer desert dust storms is a normal part of living in Mongolia.”

Buyandelger adds that “Masks are widely used to create alternative realities; examples range from traditional shamanic rituals in Inner Asia to computer-mediated virtual reality (VR) creations anywhere in the world. Such creative masks help wearers to suspend their everyday identities and assume new ones. Alternative worlds provide experiential and experimental spaces in which societies explore issues and share insights in a safe, impersonated way — outside of everyday experience. Hence, a mask often conceals one identity to reveal new possibilities. Seen in this light, virus protection masks offer an opportunity to replace a visage of fear with a public expression of strength as a community. Thus masks become pragmatic and expressive socio-cultural tools for societies and individuals to move forward in confidence.”

In “The Masks of Empire, Politics, and War,” Catherine Clark, an associate professor of cultural history, writes that three of the most meaningful historic masks of the early modern era include the gas masks that became essential gear on the WWI battlefields; the lightweight, prosthetic masks designed with individual care to cover the disfiguring facial wounds of returning WWI soldiers; and the masks made for ceremonial purposes in Africa, Asia, and the Americas that later circulated in 20th century Europe as influential artworks.

Clark also observes that while “mask-wearing is a new marker of American political divisions, in France facial coverings have long been at the heart of political debates. In 2011, France banned individuals from the public wearing of the niqab or burka, both garments typically worn by Muslim women that cover the wearer’s face. This ban built on a 2004 law that forbade ostentatious religious symbols in public schools. These symbols might include Christian crosses and Jewish kippas/yarmulkes, but public debates about the law centered on the Muslim veil as incompatible with the secular values of the French Republic. This spring, protective masks became mandatory in public in France, and yet, the burka and niqab remained banned. At the same time, in the U.S., many people of color described not feeling safe wearing masks, even needed protective masks, in public. These two cases, while based in very different issues, reveal the degree to which politics, cultural norms, and bias dictate who can cover their faces and how.”  

In “Masks as 公德心,” Emma Teng, the T.T. and Wei Fong Chao Professor of Asian Civilizations; and director of MIT Global Languages, writes that “In general, I think too much has been made of the supposed difference between American ‘individualism’ and Asian ‘collectivism.’ However, when it comes to wearing face masks, certain aspects of culture have almost certainly been coming into play.” Teng cites the “communitarian norms in East Asian countries” that support the ethos that “doing something for the community good is good for me also. This value is known as 公德心: in Mandarin: gongdexin; in Japanese: kootokushin; in Korean: Kongdokshim; and in English: ‘public spiritedness.’”

In addition, Teng notes that “Confucianism, a philosophy that has significantly influenced East Asian cultures, encourages great respect for elders and care for young children,” and that “if wearing a face mask can help protect someone’s grandparents, that is your duty.” Similarly, “it is considered a social responsibility to do one’s part in controlling the pandemic to ensure that schools remain open for the younger generation.” Teng also notes that “In East Asia, face masks are worn for a wide range of purposes. Combating urban pollution is a top reason, and it’s also common to wear a face mask to prevent allergies or to provide a little extra privacy in densely populated East Asian cities.” And “In cold and flu season … if you have a cold yourself, you are expected as a matter of basic etiquette to wear a face mask in public, in the office, and at school.”   

In “Persona: Masks in the Graeco-Roman World,” Stephanie Ann Frampton, an associate professor of classical literature, writes that "In Latin, one of the words for mask is persona, thought to have meant 'something through which sound passes' (per, 'through;” sono, “to make a sound'). Even in the time of Cicero, persona was already being used to describe the 'part' or 'character that one sustains in the world' — in other words, the role or roles we play in society.”

Frampton finds that “What’s most interesting about the masks in the classical period is that they often served the inverse purpose from the masks we’re wearing today to prevent the spread of disease. Theatrical masks in the ancient Graeco-Roman world functioned effectively as megaphones, leaving the mouth uncovered and allowing the voice to be projected to a large audience while covering the rest of the head and face with a typically exaggerated fixed expression. The best known masks from this period are, of course, those of comedy and tragedy, though many other types of masks were used for theatrical and religious performances, which ranged from satyr plays to cult rituals." Frampton suggests that "One of the things we can learn from ancient theatrical masks is that emotion and feeling are revealed through the eyes and not just the mouth — something we can take to heart as we communicate with others while we all wear masks during this pandemic.”


Series prepared by MIT SHASS Communications
Series editor/designer: Emily Hiestand
Consulting editor: Kathryn O'Neill

 



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