Abstract: Smith-Purcell radiation (SPR), which occurs when electrons traverse a diffraction grating, is a promising candidate for tunable terahertz sources. Recent advancements in enhancing ...

From the moment Lewis Capaldi stepped onstage at the O2 Arena in London on Tuesday night, there was an atmosphere of triumph. Save Oasis’ reunion shows, rarely have I been to a concert with a sense of ...

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School of Materials Science and Engineering, CAPT, Peking University, Beijing 100871, China Hebei Key Laboratory of Compact Fusion, Materials Technology Centre, ENN Science & Development Co., Ltd., ...

The molecular hydrogen ion H₂⁺ is the simplest molecule. This simplicity makes it a perfect study object for physicists, as its properties—for example, its energy levels—can be calculated precisely.

Department of Materials Science and Engineering and Inter-university Semiconductor Research Center, Seoul National University, Seoul 08826, Republic of Korea ...

Royce Lewis slugs a two-run home run to left field, his second homer of the game to give the Twins a 5-3 lead in the 5th inning ...

Abstract: Recently, single-particle cryo-electron microscopy (cryo-EM) has become an indispensable method for determining macromolecular structures at high resolution to deeply explore the relevant ...

The explosion of animal life in Earth's oceans half a billion years ago during and after the Cambrian Period is commonly attributed to a substantial and sustained rise of free oxygen (O 2) in seawater ...