Rice University theorists have calculated flexoelectric effects in double-walled carbon nanotubes. The electrical potential (P) of atoms on either side of a graphene sheet (top) are identical, but not when the sheet is curved into a nanotube. Double-walled nanotubes (bottom) show unique effects as band gaps in inner and outer tubes are staggered.
Increasing the efficiency of Solid oxide fuel cells (SOFCs)
PPPL physicist Nathan Ferraro with image from cover of report behind him.
Professor Sung-Yeon Jang (center) and his research team in the School of Energy and Chemical Engineering at UNIST.
Perovskite/silicon tandem solar cells are contenders for the next-generation photovoltaic technology, with the potential to deliver module efficiency gains at minimal cost.
Graphene Flagship researchers successfully combined graphene with tandem perovskite-silicon solar cells to achieve efficiencies of up to 26.3%.
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Figure 1. Simplified schematic of the Ignition IGBT test circuit and the resulting IGBT gate voltage, collector current, and dissipated power. P1 is the ON-state power loss and P2 is the discharging cycle power loss
