"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.
“产业振兴是乡村振兴的重中之重”
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“No one wants to read a 7-inch-long unformatted message when an organized attachment would have worked better,” the American etiquette experts at The Emily Post Institute, advised in a blog post on business communications.
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