科学与环境
Air holes turn silicon wafers into flat ultraviolet focusing mirrors for compact optics
来源: Phys.org - latest science and technology news stories · 发布于
Traditional lenses and mirrors focus light using curved surfaces. Metasurfaces can achieve similar functions with a flat layer of nanoscale structures that locally control the phase of light. Extending these flat optics into the ultraviolet could support compact systems for high-
Traditional lenses and mirrors focus light using curved surfaces. Metasurfaces can achieve similar functions with a flat layer of nanoscale structures that locally control the phase of light. Extending these flat optics into the ultraviolet could support compact systems for high-resolution imaging, spectroscopy, and sensing, but it introduces a fundamental materials problem: many of the materials used to make metasurfaces strongly absorb UV light.
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Vibrating mirrors of light create analog of a black hole event horizon
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Can a Radar-Equipped AC Actually Cut Your Power Bill?
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How a metabolite protects the enzyme that consumes it
Metabolites are consumed by enzymes to produce other vital molecules as well as to control metabolite levels. But how do cells avoid consuming too much? Researchers from the MPI of Biochemistry, with the University of Nevada, Las Vegas, and the de Duve Institute in Brussels, have
Phys.org - latest science and technology news stories ·
New method measures microplastics in the air using an uncrewed aerial system
Microplastics have been found in our bodies and the food we eat—and even in remote environments around the world, including seawater and ice in the Arctic. Despite their prevalence, little is known about how they move through the atmosphere. New CIRES-led research, which demonstr
Phys.org - latest science and technology news stories ·