"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.
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Movie with the fake newspaper headline "Wonder Elephant Soars to Fame!"The answer is Dumbo.
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截至第四季度末，过去12个月的订阅收入积压订单（backlog，预计未来期间内确认的合同收入）金额为88.33亿美元，同比增长15.8%。总订阅收入积压订单为281.01亿美元，同比增长12.2%。该积压订单额被计入Paradox和Sana收购案，这两笔收购分别于2026财年第三和第四季度完成。。51吃瓜对此有专业解读