Scanning lasers—from barcode scanners at the supermarket to cameras on newer smartphones—are an indispensable part of our daily lives, relying on lasers and detectors for pinpoint precision. Distance ...

Due to their excellent performance in manipulating electromagnetic (EM) waves freely and flexibly, metasurfaces have been widely investigated since the beginning of the 21st century. However, with the ...

The metasurface achieves two-dimensional beam scanning of ±45° at 5.2 GHz with a peak gain of 17.23 dBi while reducing radar visibility across five frequency bands. At 0.065 wavelengths thick, the ...

In the realm of active 3D imaging, the light detection and ranging (LiDAR) technology plays a pivotal role, offering direct depth acquisition and robust resistance to environmental noises. LiDAR ...

Measurement set-up showing the 2D array ion chamber detector on top of the motion platform. (Courtesy: Eunsin Lee) Intensity-modulated proton therapy (IMPT) delivered via proton pencil-beam scanning ...

A new system represents the first time that the capabilities of conventional beam-scanning lidar systems have been combined with those of a newer 3D approach known as flash lidar. The nonmechanical 3D ...

A few years ago [Ben Krasnow] built a scanning electron microscope from a few parts he had sitting around. He’s done a few overviews of how he built his SEM, but now he’s put up a great video on how ...

Compact treatment room: model of a gantry-less proton therapy system, with a patient positioning chair and imaging system at the centre. (Courtesy: Fernando Hueso-González) The ability to deliver ...

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