"Tuning frictional behavior on the fly has been a long-standing engineering dream," said co-author Katia Bertoldi of Harvard University. "This new insight into how surface geometry governs slip pulses paves the way for tunable frictional metamaterials that can transition from low-friction to high-grip states on demand.” In addition, the dynamics revealed by these results are similar to those of tectonic faults and thus give scientists a new model for the mechanics of earthquakes, according to their new paper published in the journal Nature.
Gone, which also stars Sherwood's David Morrissey, is a six-part fictional series following Det Annie Cassidy, played by Myles, as she attempts to solve the mysterious case of a missing woman.，更多细节参见91视频
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‘니코틴 중독’ 막는 유전자 변이 발견… 새로운 금연 보조제 온다