"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.
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It’s human nature to favor people who are similar to us. It’s easier to feel comfortable with them, to understand them, and to trust them. If you’re interviewing them for a job, you’ll more easily feel they’re a good “cultural fit”.
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Накануне стало известно, что самая дорогая квартира на первичном рынке недвижимости Москвы продается более чем за девять миллиардов рублей.
Ранее 12-летний мальчик выжил после падения с горы со своим отцом и замерз насмерть. Трагедия произошла на пике Бидиан нам Биан на горе Мунро в Шотландии.，更多细节参见新收录的资料