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Using polarized reflective light, PNNL scientists discovered a novel new compound – Cd3Ge2As4. This breakthrough was made while conducting experimental work to develop new semiconductors. The new material potentially has applications in infrared optics and electronics. The specimen was imaged in cross-polarized reflected light. The different colors are due to birefringence in the crystal caused by light traveling at different speeds and different crystallographic axes. The image was captured by scientist Brad Johnson. The team of researchers includes Brian Riley, Joe Ryan, John McCloy, Harrod Crum, and SK Sundaram.
Terms of Use: Our images are freely and publicly available for use with the credit line, "Courtesy of Pacific Northwest National Laboratory." Please use provided caption information for use in appropriate context.
Scientists at Argonne National Laboratory have found a way to use tiny diamonds and graphene to give friction the slip, creating a new material combination that demonstrates the rare phenomenon of “superlubricity.” Read more »
ABOVE: Schematic of the graphene nanoscroll (in the center) and transmission electron microscope images of the graphene surrounding nanodiamond. Brown circles emphasize the lattice of the diamond core.
Image credit: Science/AAAS & Argonne National Laboratory
Alexei Abrikosov (center), a distinguished scientist at the U.S. Department of Energy’s Argonne National Laboratory and a Nobel Prize recipient, recently received the Gold Medal of Vernadsky of the National Academy of Sciences of the Ukraine. Abrikosov’s wife, Svetlana Yuriyevna Bunkova, was on hand when Argonne Director Peter B. Littlewood (right), presented the medal during an informal ceremony at the lab.
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This image shows graphene over Si substrate. The image was acquired using an ultra low voltage electron beam (100V), this is why graphene shows such a solid contrast comparing to 1-2 kV common images.
Courtesy of Mr. Marcos Rosado , Institut Catala de Nanociencia i Nanotecnologia
Image Details
Instrument used: Magellan
Magnification: 100.000x
Horizontal Field Width: 3 µm
Vacuum: High Vacuum
Voltage: 100V
Spot: 25 pA
Working Distance: 2 mm
Detector: TLD
Researchers at UCLA and Argonne National Laboratory announced today a new method for creating magnetic skyrmion bubbles at room temperature. The bubbles, a physics phenomenon thought to be an option for more energy-efficient and compact electronics, can be created with simple equipment and common materials. Read more »
From left to right: M. Benjamin Jungfleisch, Wei Zhang, Suzanne G. E. te Velthuis, Axel Hoffmann, Wanjun Jiang, and John E. Pearson.
The researchers used the Center for Nanoscale Materials to make the setup to manufacture the skyrmions.
Photo by Mark Lopez/Argonne National Laboratory.
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Most of the food we eat suffer various biotechnological transformations by microorganisms to obtain the final product, improve its nutritional properties, or change its sensory qualities (smell, taste, color, ...).
The image corresponds to the yeast used in the preparation of a craft beer.
Yeasts are a critical component in the production of beer.
Courtesy of Dr. Maria Carbajo , UNIVERSIDAD DE EXTREMADURA
Image Details
Instrument used: Quanta 3D
Magnification: 30000x
Horizontal Field Width: 10μm
Voltage: 15kV
Spot: 5.5
Working Distance: 10mm
Detector: SE
Byungmin Ahn, a graduate student in the Mork Family Department of Chemical Engineering and Materials Science, received a Gold Medal award in March 2008 for his presentation at the Fifth International Symposium on Ultrafine-Grained Materials held in New Orleans. Ahn is shown conducting research at the USC Composites Center. Photo by: Philip Channing
Researchers at the U.S. Department of Energy’s Argonne National Laboratory have revealed previously unobserved behaviors that show how details of the transfer of heat at the nanoscale cause nanoparticles to change shape in ensembles.
Above: This diagram shows a model consists three distinct transitional states satisfactorily explains the x-ray signal as the nanorod transitions to its intermediate state and then on to its final nanosphere state. The data was collected using laser and x-ray source at the 7-ID beamline of the Advanced Photon Source. Image credit: Yuelin Li et. al.
Researchers at UCLA and Argonne National Laboratory announced today a new method for creating magnetic skyrmion bubbles at room temperature. The bubbles, a physics phenomenon thought to be an option for more energy-efficient and compact electronics, can be created with simple equipment and common materials. Read more »
ABOVE: From left to right: Argonne researchers Wanjun Jiang, Suzanne G.E. te Velthuis, and Axel Hoffman published their results in Science Express.
The researchers used the Center for Nanoscale Materials to make the setup to manufacture the skyrmions.
Photo by Mark Lopez/Argonne National Laboratory.
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PI: Priya Vashishta, University of Southern California
Billion-atom reactive molecular dynamics simulation of nanobubble collapse in water near a ceramic surface under shock compression. A 2km/sec shock wave compresses the nanobubble and creates high compressive stress and novel chemical reactions (production of hydronium ions) not found under normal conditions. The simulations reveal that high pressure in the shock wave deforms the ceramic surface and also accelerates water molecules from the bubble periphery towards the center of the bubble. These high-velocity water molecules bunch up to form a nanojet. The nanojet impact creates damage on the ceramic surface. The simulation results reveal atomistic mechanisms of mechanically induced chemistry, which is the key to understanding the safety-threatening damage in nuclear reactors. The simulations were carried out using 163,840 cores on Intrepid, the Blue Gene/P system, at the Argonne Leadership Computing Facility.
Credit: Billion-atom reactive simulations by Adarsh Shekhar, Ken-ichi Nomura, Rajiv K. Kalia, Aiichiro Nakano, and Priya Vashishta, University of Southern California. Visualization by Joseph Insley at the ALCF.
Secondary electron image of sponge nickel.
Courtesy of Mr. Bambang Afrinaldi
Image Details
Instrument used: Other SEM (XL SEM, Sirion, etc.)
Magnification: 2000x
Horizontal Field Width: 60 μm
Voltage: 20 kV
Spot: 30
Working Distance: 10
Detector: SE
The list of potential mechanisms that underlie an unusual metal-insulator transition has been narrowed by a team of scientists using a combination of X-ray techniques. This transition has ramifications for material design for electronics and sensors. Read more »
ABOVE: The unit cell of the nickelate NdNiO3 is shown with Nd represented by blue, O by red and Ni by green. The Ni electron density (green) is believed to transfer to the Nd (blue) during the metal-insulator transition. Image courtesy Mary Upton.
Research was conducted at the Advanced Photon Source.
Researchers at UCLA and Argonne National Laboratory announced today a new method for creating magnetic skyrmion bubbles at room temperature. The bubbles, a physics phenomenon thought to be an option for more energy-efficient and compact electronics, can be created with simple equipment and common materials. Read more »
ABOVE: From left to right: Argonne researchers Wanjun Jiang, Suzanne G.E. te Velthuis, and Axel Hoffman published their results in Science Express.
The researchers used the Center for Nanoscale Materials to make the setup to manufacture the skyrmions.
Photo by Mark Lopez/Argonne National Laboratory.
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Lawrence Fung, Stanford University, gives his presentation, "Maximizing the Potential of Neurodiversity in the Employment and Educational Settings," at the All-Summit Closing Plenary.
By Alexey Snezhko, Maxim Belkin, Igor Aronson
Scientists at Argonne found they could create these tiny "snakes" out of particles of nickel (white) by tinkering with the magnetic fields and water flow. The snakes assemble themselves and even "swim" in response to water currents.
--more details--
Self-assembled magnetic snake in far-from-equilibrium magnetic ensembles at the water-air interface. These structures are spontaneously created from magnetic microparticles as a result of intricate interplay between magnetic forces and water flows. Snakes are accompanied by water currents which often force them to swim. White objects in the picture correspond to nickel particles. One sees individual particles as well as linear chains formed by particles. Arrows and background colors designate the velocity field and magnitudes of the surface flows.
Published in Physical Review Letters 99, 158301 (2007).
Decoration of Au nano-particles on the surface of ZnO nano-particles
Courtesy of Mr. Durga Prasad Muvva , UGC-Networking Resource Centre, School of Chemistry and The Centre for Nanotechnology, University of Hyderabad
Image Details
Instrument used: Tecnai
Magnification: 38000x
Voltage: 200 kV
Spot: 1
Working Distance: 3
While conducting experimental work to develop new semiconductors, PNNL scientists discovered a novel new compound—Cd3Ge2As4. The new material potentially has applications in infrared optics and electronics. This image is of a SEM backscatted electron detector micrograph and accompanying energy dispersive spectroscopic elemental dot map. The different colors are due to birefringence in the crystal caused by light traveling at different speeds along different crystallographic axes and show the spatial distribution of Cd (red), Ge (blue), and As (green). The image was captured by scientist Brad Johnson. The team of researchers on this project includes Brian Riley, Joe Ryan, John McCloy, Jarrod Crum, and SK Sundaram.
This image was a part of the 2010 PNNL Science as Art contest.
Terms of Use: Our images are freely and publicly available for use with the credit line, "Courtesy of Pacific Northwest National Laboratory." Please use provided caption information for use in appropriate context.
Commercial titanium(IV) oxide nanopowder, used as a photocatalyst in water treatment processes.
Courtesy of Dr. Maria Carbajo , UNIVERSIDAD DE EXTREMADURA
Image Details
Instrument used: Tecnai
Magnification: 900000x
Horizontal Field Width: 60 nm
Voltage: 200kV
Spot: 2.0
Detector: CCD
At Pacific Northwest Laboratory, equipment used for a Carbon Capture program, which is developing novel solvents for better capturing CO2 from a coal powered power plant.
EnergyTechnologyVisualsCollectionETVC@hq.doe.gov
www.flickr.com/photos/departmentofenergy/collections/7215...
Hypnea musciformis is an algae found at Ceará coast. There was a doubt about the morphology and composition in the tip and the middle thalli. Large field image coupled to EDS shows that there is no significant difference on this parameters for this specie.
green - Al
Orange - Cl
pink - O
Courtesy of Prof. Antonio Gomes , Universidade Federal do Ceará
Image Details
Instrument used: Quanta SEM
Magnification: 500
Horizontal Field Width: 4mm
Vacuum: 10e-1
Voltage: 20kV
Spot: 3
Working Distance: 10
Detector: BSE and EDS
In this artist rendering, tiny magnetic vortices form on nanodisks, with each disk having a diameter of about 100 nanometers. Each vortex is directed either upwards or downwards. The Argonne study looked at the interaction between pairs of these nanodisks.
Image courtesy Helmholtz-Zentrum Dresden-Rossendorf / Sander Münster 3DKosmos.
By combining a variety of different experimental techniques and theory, a group led by researchers at Argonne National Laboratory obtained unique insights into the nature of the pseudogap state in a canonical charge density wave material.
ABOVE: Scanning tunneling microscopy topographic images with various intercalation increasing from left to right. Small areas of well-defined charge density wave ordering become visible. (Image courtesy Stephen Rosenkranz.)
Researchers found that fluoroethylene carbonate creates a rubber-like protective shell around the negative electrode inside silicon-based lithium-ion batteries. More »
Lithium ions react with silicon to form a new compound, which causes the electrode to expand. Researchers found that flouroethylene carbonate molecules produce a rubber-like protective layer that can accommodate the electrode expansion.
Infographic by Sana Sandler/Sarah Schlieder
This image depicts the series of reactions by which water is separated into hydrogen molecules and hydroxide (OH-) ions. The process is initiated by nickel-hydroxide clusters (green) embedded on a platinum framework (gray).
See "Making molecular hydrogen more efficiently", Dec. 8, 2011.
Photo courtesy Argonne National Laboratory.
Canola seed x-cut on adhesive carbon. Lignified tissues are possibly responsible for lower efficiency of oil extraction process. Picture made by stitching 9 micrographs.
Courtesy of Dr. Michał Rawski , Maria Curie-Sklodowska University in Lublin
Image Details
Instrument used: Quanta 3D
Magnification: 100x
Horizontal Field Width: 4.47 mm
Vacuum: 1.6 e-4 Pa
Voltage: 2 kV
Spot: 4.5
Working Distance: 9.4
Detector: ETD
SSRL scientist Dimosthenis Sokaras tweaks one of the focus mirrors on what is currently the largest Raman spectrometer in the world. This new setup expands the lab's capabilities in X-ray Raman and X-ray emission spectroscopy—two techniques used to analyze the organization of electrons in solids, liquids and gases.
(SLAC National Accelerator Laboratory)
A computer graphic showing a fructose molecule (white, gray and red chain-like structure) within a zirconium oxide nanobowl (at center). Other nanobowls in the array are unoccupied. The red atoms are surface oxygen and the blue atoms are zirconium.
Larry Curtiss, Argonne National Laboratory
Byungmin Ahn, a graduate student in the Mork Family Department of Chemical Engineering and Materials Science, received a Gold Medal award in March 2008 for his presentation at the Fifth International Symposium on Ultrafine-Grained Materials held in New Orleans. Ahn is shown conducting research at the USC Composites Center. Photo by: Philip Channing
Strange triangle crystals of KI (potassium iodide) on mica.
Courtesy of Dr. Alexander Kulak , School of Chemistry, University of Leeds
Image Details
Instrument used: Nova NanoSEM
SSRL scientist Dimosthenis Sokaras tweaks one of the focus mirrors on what is currently the largest Raman spectrometer in the world. This new setup expands the lab's capabilities in X-ray Raman and X-ray emission spectroscopy—two techniques used to analyze the organization of electrons in solids, liquids and gases.
(SLAC National Accelerator Laboratory)
This research encompasses the growth of nanoscale GaAs membranes with integrated quantum heterostructures. The particular orientation provides parallel defect-free growth. Their elongated shape and nanoscale lateral size combined with the heterostructures will provide the path for tailored defect-free
one dimensional structures. The image combines Magellan SEM figure with a Titan aberration corrected atomic resolution HAADF STEM.
Courtesy of Prof. Jordi Arbiol , ICREA and Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Image Details
Instrument used: Titan
Polymer film deposited on a TEM grid and dried under vacuum.
Courtesy of Dr. Angela Teixeira Neto
Image Details
Instrument used: Inspect
Amy Clarke, Colorado School of Mines, delivers her talk at the Additive Manufacturing Keynote session.
A team of scientists at Argonne National Laboratory, Northwestern University and Stony Brook University has, for the first time, created a two-dimensional sheet of boron – a material known as borophene.
Scientists have been interested in two-dimensional materials for their unique characteristics, particularly involving their electronic properties. Borophene is an unusual material because it shows many metallic properties at the nanoscale even though three-dimensional, or bulk, boron is nonmetallic and semiconducting.
ABOVE: Argonne scientists Andrew Mannix and Nathan Guisinger examine a boron evaporator while Brandon Fisher checks cryogen flow settings and Brian Kiraly examines a sample next to a vacuum chamber loadlock. Photo by Mark Lopez / Argonne National Laboratory.
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The composites obtained from the 3D printer.
Courtesy of Mr. Anton Orekhov , NATIONAL RESEARCH CENTRE KURCHATOV INSTITUTE
Image Details
Instrument used: Versa 3D
Magnification: 120
Horizontal Field Width: 3.45 mm
Voltage: 1 kV
Detector: SE (ETD) + SE (ICE)
The University of Minnesota – Twin Cities team, Material Girls, on won the TMS Materials Bowl knowledge and trivia competition. Team members Colton Gerber, Ashlie Hamilton, Kevin Schmalbach, and Nicholas Johnson each received $250 in prize money, as well as $500 for their chapter and the honor of taking home the Materials Bowl trophy. 2021 TMS President, Ellen Cerreta, (left) presents the trophy to the winning team.
Argonne X-ray physicist Haidan Wen received a 2016 DOE Early Career Award, a prestigious research grant for $2.5 million over five years.
The grant will fund Wen’s research to develop a new imaging technique to catch dynamic snapshots of materials as they’re changing and performing unusual phenomena, using X-rays at the Advanced Photon Source. Here, Wen stands in the Advanced Photon Source at beamline 7IDC.
Photo by Wes Agresta/Argonne National Laboratory.
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Kevin Golovin, a graduate student in materials science and engineering at U-M, demonstrates a new rubbery material that can create ice repelling, or "icephobic," coatings on a variety of materials, such as windshields or ship hulls. In this photo, the "icephobic" coating was applied to the right half of a license plate, preventing ice from sticking to that half after being placed in a freezer. The research is being done under the direction of Anish Tuteja, an associate professor in U-M's Department of Materials Science & Engineering.
Photo: Evan Dougherty, Michigan Engineering Communications & Marketing