"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.
第一，沉睡资产。德索托的理论核心可以用一个词概括——产权。更准确地说，是可转让、可抵押、可标准化的产权。他在《资本的秘密》中提出一个简单而深刻的问题：为什么穷人手里拥有资产，却依然贫穷？答案是，他们拥有的只是“沉睡资产”。
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