DOE News
    Doe Science news source
    The DOE Science News Source is a Newswise initiative to promote research news from the Office of Science of the DOE to the public and news media.
    • 2019-06-03 15:05:55
    • Article ID: 713859

    2D crystals conforming to 3D curves create strain for engineering quantum devices

    • Credit: Christopher Rouleau/Oak Ridge National Laboratory, U.S. Dept. of Energy

      Strain-tolerant, triangular, monolayer crystals of WS2 were grown on SiO2 substrates patterned with donut-shaped pillars, as shown in scanning electron microscope (bottom) and atomic force microscope (middle) image elements. The curvature of the pillars induced strain in the overlying crystals that locally altered their optoelectronic properties, as shown in bright regions of photoluminescence (top).

    • Credit: Henry Yu/Rice University

      Shown is a theoretical simulation of the strain distribution of triangular monolayer crystals of WS2 conformally grown on donuts patterned on a substrate.

    A team led by scientists at the Department of Energy’s Oak Ridge National Laboratory explored how atomically thin two-dimensional (2D) crystals can grow over 3D objects and how the curvature of those objects can stretch and strain the crystals. The findings, published in Science Advances, point to a strategy for engineering strain directly during the growth of atomically thin crystals to fabricate single photon emitters for quantum information processing.

    The team first explored growth of the flat crystals on substrates patterned with sharp steps and trenches. Surprisingly, the crystals conformally grew up and down these flat obstacles without changing their properties or growth rates. However, curvy surfaces required the crystals to stretch as they grew to maintain their crystal structure. This growth of 2D crystals into the third dimension presented a fascinating opportunity. 

    “You can engineer how much strain you impart to a crystal by designing objects for them to grow over,” said Kai Xiao, who with ORNL colleagues David Geohegan and postdoctoral researcher Kai Wang (now at Intel) conceived the study. “Strain is one way to make ‘hot spots’ for single photon emitters.”

    Conformal growth of perfect 2D crystals over 3D objects has the promise to localize strain to create high-fidelity arrays of single photon emitters. Stretching or compressing the crystal lattice changes the material’s band gap, the energy gap between the valence and conduction bands of electrons, which largely determines a material’s optoelectronic properties. Using strain engineering, researchers can funnel charge carriers to recombine precisely where desired in the crystal instead of at random defect locations. By tailoring curved objects to localize strain in the crystal, and then measuring resulting shifts in optical properties, the experimentalists compelled co-authors at Rice University—theorists Henry Yu, Nitant Gupta and Boris Yakobson—to simulate and map how curvature induces strain during crystal growth.

    At ORNL, Wang and Xiao designed experiments with Bernadeta Srijanto to explore the growth of 2D crystals over lithographically patterned arrays of nanoscale shapes. Srijanto first used photolithography masks to protect certain areas of a silicon oxide surface during exposure to light, and then etched away the exposed surfaces to leave vertically standing shapes, including donuts, cones and steps. Wang and another postdoctoral researcher, Xufan Li (now at Honda Research Institute), then inserted the substrates into a furnace where vaporized tungsten oxide and sulfur reacted to deposit tungsten disulfide on the substrates as monolayer crystals. The crystals grew as an orderly lattice of atoms in perfect triangular tiles that grew larger with time by adding row after row of atoms to their outer edges. While the 2D crystals seemed to effortlessly fold like paper over tall steps and sharp trenches, growth over curved objects forced the crystals to stretch to maintain their triangular shape.

    The scientists found that “donuts” 40 nanometers high were great candidates for single photon emitters because the crystals could reliably tolerate the strain they induced, and the maximum strain was precisely in the “hole” of the donut, as measured by shifts in the photoluminescence and Raman scattering. In the future, arrays of donuts or other structures could be patterned anywhere that quantum emitters are desired before the crystals are grown.        

    Wang and ORNL co-author Alex Puretzky used photoluminescence mapping to reveal where the crystals nucleated and how fast each edge of the triangular crystal progressed as it grew over the donuts. After careful analysis of the images, they were surprised to discover that although the crystals maintained their perfect shapes, the edges of crystals that had been strained by donuts grew faster. 

    To explain this acceleration, Puretzky developed a crystal growth model, and colleague Mina Yoon conducted first-principles calculations. Their work showed that strain is more likely to induce defects on the growing edge of a crystal. These defects can multiply the number of nucleation sites that seed crystal growth along an edge, allowing it to grow faster than before.

    The reason crystals can grow easily up and down deep trenches, but become strained by shallow donuts, has to do with conformity and curvature. Imagine wrapping presents. Boxes are easy to wrap because the paper can fold to conform to the shape. But an irregularly shaped object with curves, such as an unboxed mug, is impossible to wrap conformally (to avoid tearing the paper, you would have to be able to stretch it like plastic wrap.)

    The 2D crystals also stretch to conform to the substrate’s curves. Eventually, however, the strain becomes too great and the crystals split to release the strain, atomic force microscopy and other techniques revealed. After the crystal cracks, growth of the still-strained material proceeds in different directions for each new arm. At Nanjing University of Aeronautics and Astronautics, Zhili Hu performed phase-field simulations of crystal branching. Xiang Gao of ORNL and Mengkun Tian (formerly of the University of Tennessee) analyzed the atomic structure of the crystals by scanning transmission electron microscopy.

    “The results present exciting opportunities to take two-dimensional materials and vertically integrate them into the third dimension for next-generation electronics,” said Xiao.

    Next the researchers will explore whether strain can enhance the performance of tailored materials. “We’re exploring how the strain of the crystal can make it easier to induce a phase change so the crystal can take on entirely new properties,” Xiao said. “At the Center for Nanophase Materials Sciences, we’re developing tools that will allow us to probe these structures and their quantum information aspects.”

    The title of the paper is “Strain tolerance of two-dimensional crystal growth on curved surfaces.”

    The DOE Office of Science supported material growth and structural and optical characterizations, which were performed at the Center for Nanophase Materials Sciences, a DOE Office of Science User Facility. This research also used resources of the National Energy Research Scientific Computing Center, also a DOE Office of Science User Facility. Work at Rice was supported by an Office of Naval Research grant.

    UT-Battelle manages ORNL for DOE’s Office of Science. The single largest supporter of basic research in the physical sciences in the United States, the Office of Science is working to address some of the most pressing challenges of our time. For more information, visit https://energy.gov/science. —by Dawn Levy

     

    • other-fb
    • other-tw
    X
    X
    X
    • Filters

    • × Clear Filters
    Measuring the Charge of Electrons in a High-Temp Superconductor

    Measuring the Charge of Electrons in a High-Temp Superconductor

    The measurements could inform the search for new materials that perfectly conduct electricity at relatively higher temperatures.

    A new way to generate solar steam for cleaning water and reducing waste

    A new way to generate solar steam for cleaning water and reducing waste

    At the U.S. Department of Energy's Argonne National Laboratory, researchers are exploring affordable materials that could absorb the sunlight necessary to evaporate water and recapture it, leaving contaminants behind.

    Amazon Rainforest Absorbing Less Carbon Than Expected

    Amazon Rainforest Absorbing Less Carbon Than Expected

    An international team of scientists, including climate scientists from Lawrence Berkeley National Laboratory, found that accounting for phosphorus-deficient soils reduced projected carbon dioxide uptake by an average of 50% in the Amazon, compared to current estimates based on previous climate models that did not take into account phosphorus deficiency.

    Fermilab's newest accelerator delivers first results

    Fermilab's newest accelerator delivers first results

    IOTA is designed to develop technologies to increase the number of particles in a beam without increasing the beam's size and thus the size and cost of the accelerator. IOTA researchers are investigating a novel technique called nonlinear integrable optics. The technique was a winner: Scientists observed that these specialized magnets significantly decreased the instability.

    Brookhaven Completes LSST's Digital Sensor Array

    Brookhaven Completes LSST's Digital Sensor Array

    After 16 years of dedicated planning and engineering, scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory have completed a 3.2 gigapixel sensor array for the camera that will be used in the Large Synoptic Survey Telescope (LSST), a massive telescope that will observe the universe like never before.

    Scientists Report Two Advances in Understanding the Role of 'Charge Stripes' in Superconducting Materials

    Scientists Report Two Advances in Understanding the Role of 'Charge Stripes' in Superconducting Materials

    In independent studies, two research teams report important advances in understanding how charge stripes might interact with superconductivity. Both studies were carried out with X-rays at the Department of Energy's SLAC National Accelerator Laboratory.

    For Superconductors, Discovery Comes From Disorder

    For Superconductors, Discovery Comes From Disorder

    In a new study, scientists at the U.S. Department of Energy's (DOE) Argonne National Laboratory have explained the ways in which two electronic arrangements compete with each other and ultimately affect the temperature at which a material becomes superconducting.

    Cool Roofs Can Help Shield California's Cities Against Heat Waves

    Cool Roofs Can Help Shield California's Cities Against Heat Waves

    A new study by researchers at Lawrence Berkeley National Laboratory shows that if every building in California sported "cool" roofs by 2050, these roofs would help contribute to protecting urbanites from the consequences of dangerous heatwaves.

    Scientists discover potential path to improving samarium-cobalt magnets

    Scientists discover potential path to improving samarium-cobalt magnets

    Scientists have discovered a potential tool to enhance magnetization and magnetic anisotropy, making it possible to improve the performance of samarium-cobalt magnets.

    Atomic 'Trojan Horse' Could Inspire New Generation of X-Ray Lasers and Particle Colliders

    Atomic 'Trojan Horse' Could Inspire New Generation of X-Ray Lasers and Particle Colliders

    An international team of researchers, including scientists from the Department of Energy's SLAC National Accelerator Laboratory, has demonstrated a potentially much brighter electron source based on plasma that could be used in more compact, more powerful particle accelerators.


    • Filters

    • × Clear Filters

    DOE Issues Small Business Research and Development Funding Opportunity Announcement

    The Department of Energy (DOE) Small Business Innovation Research (SBIR) and Small Business Technology Transfer (STTR) programs issued its first Funding Opportunity Announcement (FOA) for Fiscal Year 2020.

    Bioenergy startup licenses ORNL food-waste-to-fuel system

    Bioenergy startup licenses ORNL food-waste-to-fuel system

    Electro-Active Technologies, Inc., of Knoxville, Tenn., has exclusively licensed two biorefinery technologies invented and patented by the startup's co-founders while working at Oak Ridge National Laboratory. The technologies work as a system that converts organic waste into renewable hydrogen gas for use as a biofuel.

    DOE to Provide $27.6 Million for Data Science Research in Chemical and Materials Sciences

    The U.S. Department of Energy (DOE) announced $27.6 million in funding over the next three years for targeted research in data science to accelerate discovery in chemistry and material sciences.

    Explore the Site of a New Telescope Survey That Will Map the Universe in 3-D

    Explore the Site of a New Telescope Survey That Will Map the Universe in 3-D

    For a special sneak preview before the official start of observations in early 2020, join scientists, engineers, and others who are working on the Dark Energy Spectroscopic Instrument (DESI) for an exclusive day of access. DESI, under installation at Kitt Peak National Observatory, will capture the light from tens of millions of distant galaxies to better understand the accelerating expansion of the universe.

    A Community-Driven Data Science System to Advance Microbiome Research

    A Community-Driven Data Science System to Advance Microbiome Research

    The National Microbiome Data Collaborative (NMDC), a new initiative aimed at empowering microbiome research, is gearing up its pilot phase after receiving $10 million from the U.S. Department of Energy Office of Science.

    Brookhaven Lab and University of Delaware Begin Joint Initiative

    Brookhaven Lab and University of Delaware Begin Joint Initiative

    The U.S. Department of Energy's (DOE) Brookhaven National Laboratory and the University of Delaware (UD) have begun a two-year joint initiative to promote collaborative research in new areas of complementary strength and strategic importance.

    IDEMIA Identity & Security USA licenses ORNL advanced optical array

    IDEMIA Identity & Security USA licenses ORNL advanced optical array

    IDEMIA Identity & Security USA has licensed an advanced optical array developed at the Department of Energy's Oak Ridge National Laboratory. The portable technology can be used to help identify individuals in challenging outdoor conditions.

    Jefferson Lab Welcomes New Director of Accelerator Operations

    Jefferson Lab Welcomes New Director of Accelerator Operations

    After an extensive search, Camille Ginsburg has been selected as the director of accelerator operations at DOE's Jefferson Lab.

    EIC Center at Jefferson Lab Announces Fellowship Awards

    EIC Center at Jefferson Lab Announces Fellowship Awards

    One graduate student and three postdoctoral research scientists are awarded fellowships to advance the science of an electron-ion collider.


    • Filters

    • × Clear Filters
    Nuclear Physics Detector Tech Used in Cancer Treatment Monitoring System

    Nuclear Physics Detector Tech Used in Cancer Treatment Monitoring System

    The OARtrac(r) system includes technologies that are based on a novel application of scintillating material in fiber form. Doctors can insert these scintillating fibers into the human body via a catheter to monitor the radiation that cancer patients receive in a range of hard-to-reach areas.

    Machine Learning Helps Create Detailed, Efficient Models of Water

    Machine Learning Helps Create Detailed, Efficient Models of Water

    A team devised a way to better model water's properties. They developed a machine-learning workflow that offers accurate and computationally efficient models.

    Cultivating the Assembly Landscape

    Cultivating the Assembly Landscape

    For the first time, a team determined and predictably manipulated the energy landscape of a material assembled from proteins. Designing materials that easily and reliably morph on command could benefit water filtration, sensing applications, and adaptive devices.

    A Change in Structure for a Superheavy Magnesium Isotope

    A Change in Structure for a Superheavy Magnesium Isotope

    A recent measurement exploring the structure of magnesium-40 has shown a surprising change in the structure relative to expectations. This unanticipated change could be pointing to physics missing from our theories, such as the effects of weak binding between particles.

    Bursts of Light Shape Walls Between Waves of Charge

    Bursts of Light Shape Walls Between Waves of Charge

    To better store data, scientists need ways to change a material's properties suddenly. For example, they want a material that can go from insulator to conductor and back again. Now, they devised a surprisingly simple way of flipping a material from one state into another, and back again, with flashes of light. A single light pulse turns thin sheets of tantalum disulfide from its original (alpha) state into a mixture of alpha and beta states. Domain walls separate the two states. A second pulse of light dissolves the walls, and the material returns to its original state.

    New Geometric Model Improves Predictions of Fluid Flow in Rock

    New Geometric Model Improves Predictions of Fluid Flow in Rock

    Supercomputer validates mathematical approach for describing geological features.

    Deep Learning Reveals Mysteries of Deep Space

    Deep Learning Reveals Mysteries of Deep Space

    How do you determine the measurable "things" that describe the nature of our universe? To answer that question, researchers used CosmoFlow, a deep learning technique, running on a National Energy Research Scientific Computing Center supercomputer. They analyzed large, complex data sets from 3-D simulations of the distribution of matter to answer that question. The team showed that CosmoFlow offers a new platform to gain a deeper understanding of the universe.

    At DOE's Manufacturing Demonstration Facility, science drives next-gen creations

    At DOE's Manufacturing Demonstration Facility, science drives next-gen creations

    American ingenuity is providing radical productivity improvements from advanced materials and robotic systems developed at the Department of Energy's Manufacturing Demonstration Facility at Oak Ridge National Laboratory.

    High-Fidelity Multiphysics Simulations to Improve Nuclear Reactor Safety and Economics

    High-Fidelity Multiphysics Simulations to Improve Nuclear Reactor Safety and Economics

    Engineers can model heat distribution in reactor designs with fewer or no approximations.

    Tiny Vortices Could One Day Haul Microscopic Cargo

    Tiny Vortices Could One Day Haul Microscopic Cargo

    The behavior of active magnetic liquids suggests new pathways to transport particles across surfaces and build materials that self-heal.


    Spotlight

    PPPL apprenticeship program offers young people chance to earn while they learn high-tech careers
    Thursday August 01, 2019, 12:05 PM

    PPPL apprenticeship program offers young people chance to earn while they learn high-tech careers

    Princeton Plasma Physics Laboratory

    Creating a diverse pipeline
    Friday July 19, 2019, 01:05 PM

    Creating a diverse pipeline

    Princeton Plasma Physics Laboratory

    JSA Awards Graduate Fellowships for Research at Jefferson Lab
    Monday July 08, 2019, 03:00 PM

    JSA Awards Graduate Fellowships for Research at Jefferson Lab

    Thomas Jefferson National Accelerator Facility

    ILSAMP Symposium showcases benefits for diverse students, STEM pipeline
    Monday May 20, 2019, 12:05 PM

    ILSAMP Symposium showcases benefits for diverse students, STEM pipeline

    Argonne National Laboratory

    Integrating Scientific Computing into Science Curricula
    Monday May 13, 2019, 11:05 AM

    Integrating Scientific Computing into Science Curricula

    Brookhaven National Laboratory

    Monday April 29, 2019, 02:05 PM

    Students from Minnesota and Massachusetts Win DOE's 29th National Science Bowl(r)

    Department of Energy, Office of Science

    Friday April 12, 2019, 03:05 PM

    DOE's Science Graduate Student Research Program Selects 70 Students to Pursue Research at DOE Laboratories

    Department of Energy, Office of Science

    Young Women's Conference in STEM seeks to change the statistics one girl at a time
    Thursday March 28, 2019, 03:05 PM

    Young Women's Conference in STEM seeks to change the statistics one girl at a time

    Princeton Plasma Physics Laboratory

    Students team with Argonne scientists and engineers to learn about STEM careers
    Tuesday March 12, 2019, 05:05 PM

    Students team with Argonne scientists and engineers to learn about STEM careers

    Argonne National Laboratory

    Lynbrook High wins 2019 SLAC Regional Science Bowl competition
    Wednesday February 13, 2019, 02:05 PM

    Lynbrook High wins 2019 SLAC Regional Science Bowl competition

    SLAC National Accelerator Laboratory

    Equipping the next generation for a technological revolution
    Thursday January 24, 2019, 01:05 PM

    Equipping the next generation for a technological revolution

    Argonne National Laboratory

    Chemistry intern inspired by Argonne's real-world science
    Friday January 18, 2019, 05:05 PM

    Chemistry intern inspired by Argonne's real-world science

    Argonne National Laboratory

    Chasing a supernova
    Friday January 18, 2019, 04:05 PM

    Chasing a supernova

    Argonne National Laboratory

    Argonne intern streamlines the beamline
    Tuesday January 08, 2019, 02:05 PM

    Argonne intern streamlines the beamline

    Argonne National Laboratory

    Research on Light-Matter Interaction Could Lead to Improved Electronic and Optoelectronic Devices
    Thursday October 11, 2018, 04:00 PM

    Research on Light-Matter Interaction Could Lead to Improved Electronic and Optoelectronic Devices

    Rensselaer Polytechnic Institute (RPI)

    Innovating Our Energy Future
    Wednesday October 03, 2018, 07:05 PM

    Innovating Our Energy Future

    Oregon State University, College of Engineering

    Physics graduate student takes her thesis research to a Department of Energy national lab
    Tuesday October 02, 2018, 03:05 PM

    Physics graduate student takes her thesis research to a Department of Energy national lab

    University of Alabama at Birmingham

    Friday September 21, 2018, 01:05 PM

    "Model" students enjoy Argonne campus life

    Argonne National Laboratory

    Writing Code for a More Skilled and Diverse STEM Workforce
    Thursday September 06, 2018, 01:05 PM

    Writing Code for a More Skilled and Diverse STEM Workforce

    Brookhaven National Laboratory

    New graduate student summer school launches at Princeton Plasma Physics Laboratory
    Tuesday September 04, 2018, 11:30 AM

    New graduate student summer school launches at Princeton Plasma Physics Laboratory

    Princeton Plasma Physics Laboratory

    The Gridlock State
    Friday August 31, 2018, 06:05 PM

    The Gridlock State

    California State University (CSU) Chancellor's Office

    Meet Jasmine Hatcher and Trishelle Copeland-Johnson
    Friday August 31, 2018, 02:05 PM

    Meet Jasmine Hatcher and Trishelle Copeland-Johnson

    Brookhaven National Laboratory

    Argonne hosts Modeling, Experimentation and Validation Summer School
    Friday August 24, 2018, 11:05 AM

    Argonne hosts Modeling, Experimentation and Validation Summer School

    Argonne National Laboratory

    Students affected by Hurricane Maria bring their research to SLAC
    Wednesday August 22, 2018, 01:05 PM

    Students affected by Hurricane Maria bring their research to SLAC

    SLAC National Accelerator Laboratory

    Brookhaven Lab Pays Tribute to 2018 Summer Interns
    Wednesday August 22, 2018, 10:05 AM

    Brookhaven Lab Pays Tribute to 2018 Summer Interns

    Brookhaven National Laboratory

    Changing How Buildings Are Made
    Monday August 20, 2018, 12:05 PM

    Changing How Buildings Are Made

    Washington University in St. Louis

    CSUMB Selected to Host Architecture at Zero Competition in 2019
    Thursday August 16, 2018, 12:05 PM

    CSUMB Selected to Host Architecture at Zero Competition in 2019

    California State University, Monterey Bay

    Department of Energy Invests $64 Million in Advanced Nuclear Technology
    Friday July 20, 2018, 03:00 PM

    Department of Energy Invests $64 Million in Advanced Nuclear Technology

    Rensselaer Polytechnic Institute (RPI)

    Professor Miao Yu Named the Priti and Mukesh Chatter '82 Career Development Professor
    Thursday July 19, 2018, 05:00 PM

    Professor Miao Yu Named the Priti and Mukesh Chatter '82 Career Development Professor

    Rensselaer Polytechnic Institute (RPI)

    2018 RHIC & AGS Annual Users' Meeting: 'Illuminating the QCD Landscape'
    Tuesday July 03, 2018, 11:05 AM

    2018 RHIC & AGS Annual Users' Meeting: 'Illuminating the QCD Landscape'

    Brookhaven National Laboratory

    Argonne welcomes <em>The Martian</em> author Andy Weir
    Friday June 29, 2018, 06:05 PM

    Argonne welcomes The Martian author Andy Weir

    Argonne National Laboratory

    Creating STEM Knowledge and Innovations to Solve Global Issues Like Water, Food, and Energy
    Monday June 18, 2018, 09:55 AM

    Creating STEM Knowledge and Innovations to Solve Global Issues Like Water, Food, and Energy

    Illinois Mathematics and Science Academy (IMSA)

    Professor Emily Liu Receives $1.8 Million DoE Award for Solar Power Systems Research
    Friday June 15, 2018, 10:00 AM

    Professor Emily Liu Receives $1.8 Million DoE Award for Solar Power Systems Research

    Rensselaer Polytechnic Institute (RPI)

    Celebrating 40 years of empowerment in science
    Thursday June 07, 2018, 03:05 PM

    Celebrating 40 years of empowerment in science

    Argonne National Laboratory

    Introducing Graduate Students Across the Globe to Photon Science
    Monday May 07, 2018, 10:30 AM

    Introducing Graduate Students Across the Globe to Photon Science

    Brookhaven National Laboratory

    Students from Massachusetts and Washington Win DOE's 28th National Science Bowl(r)
    Wednesday May 02, 2018, 04:05 PM

    Students from Massachusetts and Washington Win DOE's 28th National Science Bowl(r)

    Department of Energy, Office of Science

    The Race for Young Scientific Minds
    Thursday April 12, 2018, 07:05 PM

    The Race for Young Scientific Minds

    Argonne National Laboratory

    Q&A: Al Ashley Reflects on His Efforts to Diversify SLAC and Beyond
    Wednesday March 14, 2018, 02:05 PM

    Q&A: Al Ashley Reflects on His Efforts to Diversify SLAC and Beyond

    SLAC National Accelerator Laboratory

    Insights on Innovation in Energy, Humanitarian Aid Highlight UVA Darden's Net Impact Week
    Thursday February 15, 2018, 12:05 PM

    Insights on Innovation in Energy, Humanitarian Aid Highlight UVA Darden's Net Impact Week

    University of Virginia Darden School of Business

    Ivy League Graduate, Writer and Activist with Dyslexia Visits CSUCI to Reframe the Concept of Learning Disabilities
    Friday February 09, 2018, 11:05 AM

    Ivy League Graduate, Writer and Activist with Dyslexia Visits CSUCI to Reframe the Concept of Learning Disabilities

    California State University, Channel Islands

    Photographer Adam Nadel Selected as Fermilab's New Artist-in-Residence for 2018
    Wednesday January 17, 2018, 12:05 PM

    Photographer Adam Nadel Selected as Fermilab's New Artist-in-Residence for 2018

    Fermi National Accelerator Laboratory (Fermilab)

    Fermilab Computing Partners with Argonne, Local Schools for Hour of Code
    Wednesday January 17, 2018, 12:05 PM

    Fermilab Computing Partners with Argonne, Local Schools for Hour of Code

    Fermi National Accelerator Laboratory (Fermilab)

    Q&A: Sam Webb Teaches X-Ray Science from a Remote Classroom
    Wednesday December 20, 2017, 01:05 PM

    Q&A: Sam Webb Teaches X-Ray Science from a Remote Classroom

    SLAC National Accelerator Laboratory

    The Future of Today's Electric Power Systems
    Monday December 18, 2017, 01:05 PM

    The Future of Today's Electric Power Systems

    Rensselaer Polytechnic Institute (RPI)

    Supporting the Development of Offshore Wind Power Plants
    Monday December 18, 2017, 12:05 PM

    Supporting the Development of Offshore Wind Power Plants

    Rensselaer Polytechnic Institute (RPI)

    Stairway to Science
    Tuesday October 03, 2017, 01:05 PM

    Stairway to Science

    Argonne National Laboratory





    Showing results

    0-4 Of 2215