Sitting on the plane in Santiago listening to the safety instructions, I imagined how they might sound if they were more like the stories and flight-accident reports I’d been reading: “Should a passenger hit the ceiling twice, do a flip in the air, and land on his stomach . . . Should a service cart topple onto a flight attendant and fracture her ankles . . . Should people start screaming and calling to Jesus . . .” In the U.S., turbulence causes more than a third of all accidents on commercial flights, the National Transportation Safety Board found. Those accidents tend to hurt people in predictable ways. Passengers usually get injured near the back of the plane, for instance, often as they are walking to the lavatory, sitting inside it, or waiting in line. But the total number of injuries is hard to determine. One major airline estimated that it receives two hundred turbulence-related injury claims a year, but the N.T.S.B. doesn’t keep track of “minor injuries”—including those which require a hospital stay of less than forty-eight hours. “These things happen all the time, but because they don’t cause death or serious injury they’re swept under the rug,” an N.T.S.B. senior meteorologist and investigator told me. “We only have about a hundred aviation investigators for fourteen hundred accidents a year.”
这种仿生材料的适用性究竟如何？实验表明，其响应速度令人惊喜——完整的纹理和颜色切换可在短短20秒内完成，并能承受超过250次循环使用而性能不减。这种适应性和耐久性可以促其运用于多种场景。比如，在动态伪装方面，这种材料不仅能精准匹配背景颜色，还能生动复刻背景的纹理质感，从而达到更深层次的视觉融合。在显示与交互领域，它可用来创造能改变物体表面质感的“实体像素”，或开发新型防伪标签，只需滴加特定液体，标签背后隐藏的信息便会悄然浮现。“我们本质上是在调控光的颜色、反射和散射等基本属性。”多希表示，该技术还可用于控制建筑物表皮对阳光的吸收与反射，实现智能节能，也可创作出能随环境或情绪变化的动态面料或艺术品。
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