"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.
More than 22,000 Covid vaccine-harm claims have been made - most relating to the AstraZeneca jab
，详情可参考同城约会
更多详细新闻请浏览新京报网 www.bjnews.com.cn
But in 2022 summer sea ice in much of Antarctica dramatically shrank, falling from an average of 2.8m sq km to a record low of 1.79m sq km in 2023.
，详情可参考爱思助手下载最新版本
Efficient_Elk_7991，推荐阅读safew官方版本下载获取更多信息
Что думаешь? Оцени!