几分钟后，电话终于接通，阿爸动身出发。这是阿爸亲生父母去世后，他们五个兄弟姐妹第一次聚在一起。阿爸不愿失礼。
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Publication date: 10 March 2026
"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.