Materials Science

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Sandia’s Research in Ultrawide Bandgap Technology Could Help Improve the Grid

Sandia researchers are currently studying how ultrawide bandgap semiconductor materials could be used to create more compact and efficient power electronics, potentially leading to higher absolute voltages for distributing power grid energy. These materials, such as AIGaN, are expected to allow devices to operate at higher voltages, frequencies, and temperatures than wide bandgap materials, such [...]

By | January 12th, 2017|Energy Storage, Grid Integration, Infrastructure Assurance, Materials Science, News|Comments Off on Sandia’s Research in Ultrawide Bandgap Technology Could Help Improve the Grid

Much Cheaper, More Abundant Catalyst May Lower Hydrogen-Powered Car Costs

Sandia post-doctoral fellow Stan Chou demonstrates the reaction of more efficiently catalyzing hydrogen. In this simulation, the color is from dye excited by light and generating electrons for the catalyst molybdenum disulfide to evolve hydrogen. (Photo by Randy Montoya) Sandia researchers, at the Sandia-University of New Mexico Advanced Materials Laboratory, have engineered a [...]

University of Wisconsin–Sandia Team Awarded SunShot CSP: APOLLO Funding

With recently awarded funding from the US Department of Energy SunShot Initiative’s CSP: APOLLO Program (Concentrating Solar Power: Advanced Projects Offering Low LCOE Opportunities), Sandia is working with a team led by the University of Wisconsin–Madison to evaluate the potential for significant improvements in the commercial viability of supercritical carbon dioxide (sCO2)/Brayton-cycle power conversion as [...]

Institute for Advanced Composites Manufacturing Innovation—Inaugural Members Meeting

Sandia Wind Department technical staff members Josh Paquette and Brian Naughton attended the inaugural members meeting for the newly formed Institute for Advanced Composites Manufacturing Innovation (IACMI) in Knoxville, Tennessee. A few hundred attendees from the composites industry, academic institutions, and government agencies gathered to learn about opportunities to participate in the newest National Network for [...]

Bay-Area National Labs Team to Tackle Long-Standing Automotive Hydrogen-Storage Challenge

Sandia will lead the tri-lab Hydrogen Materials Advanced Research Consortium (HyMARC: Sandia, Lawrence Livermore National Laboratory [LLNL], and Lawrence Berkeley National Laboratory [LBNL]) to address scientific challenges to developing viable solid-state materials to store hydrogen onboard vehicles, leading to more reliable, economic hydrogen-fuel-cell vehicles. “Hydrogen, as a transportation fuel, has great potential to provide highly [...]

Sandia’s Supercritical Carbon-Dioxide/Brayton-Cycle Laboratory Signs Important MOU with Industry Partners

Sandia and eight other companies and research organizations* will collaborate to advance a distributed power system that can produce cleaner, more efficient electricity. The memorandum of understanding (MOU) focuses on developing an energy-conversion system based on supercritical carbon dioxide (sCO2)/Brayton-cycle technology. Gary Rochau, manager of Sandia’s Advanced Nuclear Concepts Dept. said sCO2/Brayton cycle technology could [...]

Version 24 of the Composite Materials Database Now Available for Download

Montana State University researchers have added acoustic emission and digital image correlation instrumentation to enhance the data collection capabilities of the substructure test fixture. Wind-turbine blade growth continues to have the largest impact on energy capture and levelized cost of energy (LCOE) reduction. While the 40–45 meter blade is today’s mainstream segment, it [...]

Sandia Develops Phased-Array Sources Based on Nonlinear Metamaterial Nanocavities

The SH-generating quantum well layer (pink) and the beam-shaping split-ring metamaterial resonators (the “C”-shaped structures). The phase-coherent emission from individual resonators opens the door for many beam-shaping applications, some of which are presented in the insets. Each device type can be achieved via proper design of individual metamaterial resonators and their arrangement on the [...]

Phononic Crystals: Engineering the Flow of Heat

A Sandia-led research team† has, for the first time, observed the coherent propagation of thermal phonons‡ in silicon at room temperature—in two-dimensional phononic crystals formed by introducing air holes in a silicon matrix with minimum feature sizes ~250 nm. To separate incoherent from coherent boundary scattering, the team fabricated phononic crystals with a fixed minimum feature [...]