"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.
"The crew's doing great," Steve Stich, manager, Nasa's Commercial Crew Program, said at a news conference.
，推荐阅读下载安装 谷歌浏览器 开启极速安全的 上网之旅。获取更多信息
这要求我们深刻理解和把握数据的特性及作用规律，充分发挥数据的正外部性、避免负外部性，增强忧患意识，坚持自立自强，在激烈的国际竞争中切实保障国家数据主权，以高度的历史自觉和战略主动，充分发挥数据要素的放大、叠加、倍增效应，加快塑造新动能新优势，为以中国式现代化全面推进强国建设、民族复兴伟业提供强劲动力。
В Финляндии предупредили об опасном шаге ЕС против России09:28
Credit: Samsung