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Metasurfaces for Flat OpticsMetasurfaces for Flat Optics

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Metasurfaces for Flat Optics


Conventional optical components including lenses based on refraction suffer from functional degradation as the device size decreases as well as other limitations. Metasurfaces consisting of subwavelength optical antenna arrays have emerged as planar optical devices that can overcome many of the limitations of conventional lenses. Such metasurfaces enable many promising applications in lenses, holograms, and optical cloaks. These metasurfaces have been developed for their specific functionalities by exploiting new materials and design algorithms. Various optical properties such as amplitude, phase, and even frequency can be tuned by adjusting the physical shape of individual antennas and their arrangement.

The articles in the March issue of MRS Bulletin overview recent progress in and the state-of-the-art of metasurfaces and their novel applications in optics and photonics.

This webinar featured three talks from experts in the field. A Q&A session was held with each speaker at the conclusion of their talks.

Talk Presentations:

  • Metasurface optics for imaging applications
    Byoungho Lee, Seoul National University
    Talk begins at 10:16
       
  • Machine learning for nanophotonics
    Michael Mrejen, Tel Aviv University
    Talk begins at 41:38
       
  • Data driven methods for electromagnetics design
    Jonathan Fan, Stanford University
    (Q&A with Evan Wang, Stanford University)
    Talk begins at 1:10:05
       

Sponsored by American Elements

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Free

Can Materials Science Counter the COVID-19 Pandemic? A discussion with materials researchers at the frontlines of battling the coronavirus


Co-presented with SFB, the Society for Biomaterials

The spread of COVID-19 throughout the globe highlights the need for improved solutions in the fight against infectious diseases. As always, materials research plays an immense role in finding these solutions. Prevention and protection, diagnostics, therapeutics and vaccines – materials science plays a key role in each of these key components.

In this live 90-minute panel discussion, we spoke with five researchers on the frontlines of this critical battle, applying biomaterials, nanotechnology, and other tools of materials research to accelerate a solution.

This webinar brought an overwhelming amount of questions, and we are continuing the conversation on LinkedIn @COVID-19 (Coronavirus) and Materials Science. We encourage you to join the group as we resume the discussion with materials researchers at the forefront of this battle.

Join the discussion on the COVID-19 and Materials Science LinkedIn group

Host: Kara Spiller, Drexel University and Chair of the Society for Biomaterials Immune Engineering Special Interest Group

Panelists:

  • Jared DeCoste, US Army CCDC Chemical Biological Center: Dr. DeCoste's research focuses on novel materials development for the remediation of toxic threats, specifically the development and engineering of materials into functional forms of personal protective equipment.

  • Keith Pardee, University of Toronto: Dr. Pardee and his group are pioneering in vitro devices to host cell-free synthetic gene networks for broad applications in sensing and human health. They have used this approach to create a sterile and abiotic platform for low-cost diagnostics for Ebola and Zika viruses, and have also created a platform for making vaccines in the field.

  • Ankur Singh, Cornell University:  Dr. Singh has strong expertise in the engineering of biomaterials-based platforms for cell and immune modulation, cell-biomaterial interactions, immune cell engineering, and vaccines. His lab focuses on engineering immune and therapeutic cells by integrating innovative materials and core concepts of cellular and molecular immunology.

  • Nguyễn T.K. Thanh, University College London:  Dr. Thanh leads a very dynamic group conducting cutting edge interdisciplinary and innovative research on the design and synthesis of magnetic and plasmonic nanomaterials for biomedical applications (e.g., treatment of cancer and diagnosis of infectious diseases).

  • Thomas Webster, Northeastern University: The primary focus of Dr. Webster’s group is the design, synthesis, and evaluation of nanomaterials for medical applications such as inhibiting bacteria growth, inflammation, and promoting tissue growth. His group also works to develop in situ sensors which can sense biological responses to medical devices.

Sponsored by GatanMilliporeSigma and Goodfellow

Gatan Ametek logo, links to Gatan website MilliporeSigma logo, links to their website

Goodfellow logo, links to the Goodfellow website

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Free

A new, much faster approach to low-mobility Hall measurements


New technology now makes it possible to research low-mobility materials on a tabletop Hall measurement system without the use of AC field. Join this webinar and see a hands-on demonstration. Presented by Lake Shore Cryotronics.

Lake Shore Cryotronics logo - links to Lake Shore website

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Free

Nanoscale Tomography Using X-rays and Electrons


Three-dimensional (3D) tomographic imaging, using x-rays or electrons, of the structural, chemical, and physical properties of a material provides key knowledge that links the structure of a material to its processing, which is central to studies across a broad spectrum of materials. For decades, tomography using x-rays or electrons has proven to be an essential 3D characterization tool. In recent years, advances in technology have enabled new imaging capabilities at the nanometer or atomic scale for 3D reconstruction.

The April 2020 issue of MRS Bulletin discusses developments, techniques, and future directions for 3D tomographic imaging. This webinar expanded upon and complemented the MRS Bulletin issue with talks from leading experts in the field. An interactive Q&A session followed each of the talks.

Talk Presentations:

  • High-dimensional and high-resolution x-ray tomography for energy materials science
    Yijin Liu, Stanford University
    Talk begins at 10:54 
       
  • Electron Tomography for Functional Nanomaterials
    Robert Hovden, University of Michigan
    Talk begins at 41:10
       
  • Atomic Electron Tomography: Adding New Dimensions to Pinpoint Single Atoms in Materials
    Jianwei (John) Miao, UCLA
    Talk begins at 1:11:33
       

Sponsored by American Elements

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Free

Atomic Layer Deposition for Emerging Thin-film Materials and Applications


This webinar was presented in conjunction with the Journal of Materials Research Focus Issue on Atomic Layer Deposition for Emerging Thin-film Materials and Applications. The webinar featured three presentations from authors from the Focus Issue, and each talk was followed by an interactive Q&A session with those authors.

Atomic layer deposition (ALD) is a powerful and elegant technique for depositing atomically controllable thin film materials. ALD proceeds with a unique growth mechanism relying on alternately sequential surface-controlled self-saturation reactions, which enables the atomic-scale layer-by-layer deposition of the uniformly conformal films over virtually any topologies.

Since the 2000s, ALD has greatly widened its variety of applications from semiconductors to catalysis, biomedicine, gas sensing, anti-corrosion coating, clean-energy technologies (batteries, fuel cells, supercapacitors, solar cells, etc.), and nano- and micro-electromechanical systems (N/MEMS). The characteristic merits of ALD include not only its superior controllability over film thickness, composition, and crystallinity, but also its unique capability for constructing conformal thin-film coatings on complex structures. These merits underlie the fast expansion of ALD into new areas over the past decades, such as metal-organic frameworks, two-dimensional layered materials, single-atom catalysis, solid-state batteries, and so forth.

Talk Presentations: 

  • Encapsulation of Organic and Nanocrystal LEDs via Atomic Layer Deposition
    Rong Chen, Huazhong University of Science and Technology
    Talk begins at 7:57 
       
  • Atomic layer–deposited nanostructures and their applications in energy storage and sensing
    Yongfeng Mei, Fudan University
    Talk begins at 37:33
      
  • Nanoscale Al2O3 coating to stabilize selenium cathode for sodium–selenium batteries
    Jian Liu, University of British Columbia
    Talk begins at 1:03:42

Speaker(s): Host(s):
Free

Green Cards for Scientific Researchers: How to Win Your EB-1/NIW Case!


Learn everything you need to know about the U.S. immigration system and how to maximize your chances of winning a green card in the EB-1/NIW categories.

Speaker bio: Brian Getson is a graduate of the University of Pennsylvania Law School with 20 years of experience. He is a leading U.S. immigration lawyer who represents scientific researchers in applying for green cards and leads his immigration law firm based in Philadelphia. Mr. Getson has given presentations on "Green Cards for Scientific Researchers" at numerous major scientific conferences, the Wistar Institute, and at Universities. Mr. Getson often provides a money back guarantee to qualified applicants giving clients confidence that they will get results. See his website, researchergreencard.com for more information.

EVENT SPONSORED AND PRESENTED BY:

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Free

Emergent Quantum MaterialsEmergent Quantum Materials

Preview Available

Emergent Quantum Materials


The properties of quantum materials are principally defined by quantum mechanical effects at macroscopic length scales. These materials exhibit phenomena and functionalities not expected or predicted from classical physics. While the field of quantum materials has been a topical area of modern materials science for decades, today it is at the center stage of technologies ranging from electronics, photonics, energy, defense, and sensing to environmental and biomedical applications, and in particular, quantum information science and technology. The May issue of MRS Bulletin presented important developments in emergent quantum materials at the intersection of materials science and condensed-matter physics.

This webinar expanded upon and complemented the articles in this MRS Bulletin issue with talks from leading experts in the field. An interactive Q&A session will follow each of the talks.

Talk Presentations:

  • Atomic-level control of interfacial superconducting materials
    Qi-Kun Xue, Tsinghua University
    Talk begins at 14:47
      
  • Magnetism, Spin Dynamics, and Quantum Transport in 2D Systems
    Juan Sierra, Catalan Institute of Nanoscience and Nanotechnology (ICN2)
    Talk begins at 44:03
      
  • Condensation of indirect excitons
    Leonid Butov, University of California, San Diego
    Talk begins at 1:13:10
      

Sponsored by American Elements

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Free

Halide Perovskite Opto- and Nanoelectronic Materials and Devices


The application of halide perovskites for photovoltaic solar cells and light-emitting diodes has rapidly expanded recently and is now being extended into nanoelectronics, including in thermoelectric, memory, and artificial synapse applications. Halide perovskites provide an excellent platform for optoelectronics and nanoelectronics with interesting optical, electrical, and magnetic properties. The articles in the June, 2020 issue of MRS Bulletin overview halogen perovskites and devices for optoelectronic and nanoelectronics applications.

This webinar expanded upon and complemented the articles in this MRS Bulletin issue with talks from leading experts in the field. An interactive Q&A session followed each of the talks.

Talk Presentations:

  • The Underappreciated Lone Pair in Halide Perovskites Underpins Their Unusual Properties
    Mercouri G. Kanatzidis, Northwestern University
    Talk begins at 10:31
      
  • Advances in Light Emitting Metal Halide Pervoskite Nanocrystals
    Biwu Ma, Florida State University
    Talk begins at 43:08
      
  • Efficiency Progress in Halide Perovskite Solar Cells
    Jun Hong Noh, Korea University
    Talk begins at 1:11:22
      

Sponsored by American ElementsAngstrom Engineering and Lake Shore Cryotronics, Inc.

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Angstrom Engineering logo, links to Angstrom website

Lake Shore Cryotronics Logo

Host(s): Speaker(s):
Free

Data-Driven Ceramics and Glass Research


Co-presented by MRS and ACerS, the American Ceramic Society

Ceramics and glasses are at the forefront of advanced materials and will continue to bring new solutions to global challenges in energy, the environment, healthcare, and information/communication technology. To meet the accelerated pace of modern technology delivery, a more sophisticated approach to the design of advanced ceramics and glass materials must be developed to enable faster, cheaper, and better research and development of new materials compositions for future applications.

In this Webinar, we will discuss application of data science tools toward the design, understanding, and optimization of ceramic and glass materials.

Talk presentations:

  • Effects of data and Regression techniques on design of robust models for glass properties prediction
    Adama Tandia, Corning, Inc.
  • Extrapolation and the role of domain knowledge in machine learning for materials
    Bryce Meredig, Citrine Informatics
  • Extrapolating Glass Properties by Topology-Informed Machine Learning
    Mathieu Bauchy, University of California, Los Angeles (UCLA)

Host(s): Speaker(s):
Free

The FUNdamentals of Atom Probe Tomography, the highest-sensitivity 3D analytical microscopic technique


This webinar provides a fundamental introduction to atom probe tomography (APT) and 3D nanoscale imaging mass spectrometry, with a focus on interpreting the resultant data. Further, we explore how APT can create more efficient energy-producing materials, and how the technique can be applied to new applications. An overview of applications in metals, semiconductors, and insulators, with examples of how atom probe tomography has been applied to solve real-world problems, is provided. This introduction to the technology and applications provides insight into how you can use APT in your research. Presented by CAMECA.

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