Abstract: This paper presents a Moiré cascaded metasurface (MCM) antenna for launching Bessel beams with a continuously tunable depth of field (DoF). The MCM antenna consists of two closely spaced ...

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With a 20-foot wingspan and designed to carry a one-ton warhead, the Ukrainian-built ‘Flamingo’ cruise missile can cause serious damage deep inside Russia territory. Here’s what we know about it.

Abstract: To address the mutual constraints between sensitivity and operational bandwidth in the cilia MEMS vector hydrophone, this study proposes a dandelion-like composite materials ciliary ...

China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China ...