Semiconductor nanowire lasers have attracted intense interest as promising compact, low-power coherent light sources for on-chip applications, many of which (e.g., imaging, multiplex communication, data storage) desire high beam quality and spectral purity—conditions that can be satisfied by single-mode operation in nanowire lasers. However, due to the lack of mode-selection mechanisms, most reported nanowire lasers exhibit [...]
The Center for Integrated Nanotechnologies at Sandia recently received a $900,000 grant to investigate the tiniest parts of solar materials. The new grant, announced by the U.S. Department of Energy in late August, will fund development of new microscopy tools to help understand the chemical and electronic structure of thin-film photovoltaic, or solar, materials and how microscopic [...]