Conventional crystals are materials in which atoms arrange themselves in repeating spatial patterns. Time crystals, on the other hand, are phases of matter characterized by repeating motions over time ...
The resolution of far-field optical microscopy stagnated for a century, but a quest began in the 1990s leading to nanoscale imaging of transparent fluorescent objects in three dimensions. Important ...
Advances in machine learning and shape-memory polymers are enabling engineers to design for mechanical performance first and ...
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