"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.
2026-02-27 00:00:00:0尹双红3014251910http://paper.people.com.cn/rmrb/pc/content/202602/27/content_30142519.htmlhttp://paper.people.com.cn/rmrb/pad/content/202602/27/content_30142519.html11921 千里寄年货 情深意更浓（暖闻热评）
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The tests used in standards for evaluating smoke alarms were developed back in the 1980s. However, despite changes in building materials since then, smoke alarms remain reliable, says Chagger: "They still respond to all the main fires we get today."
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