Researchers have found a razor-thin, rotating string of galaxies inside a massive cosmic filament, revealing unexpected ...
Abstract: This paper reports the design, fabrication and evaluation of a reflection-type micro Rb vapor cell fabricated by local anodic bonding of small 45° mirrors. The 45° mirrors with a Bragg ...
Abstract: The gas detection performance of photoacoustic spectroscopy devices can be effectively improved by optimizing the photoacoustic cell (PAC) structure. In this paper, the frequency response of ...
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