名侦探的守则
科学家开发光激活的“智能塑料” 可用于柔性电子产品和机器人_我的网站
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After the Institute of Care-life, a Chengdu-based disaster reduction laboratory, mistakenly issued a 7.7-magnitude alert for a 4.7-magnitude earthquake, the Sichuan earthquake agency on Monday accused the institute of using the name of the official earthquake early warning network without authorization, saying its authorization to use the network had already been terminated last month.
A 4.7-magnitude earthquake struck Yibin at 8:26 am on Monday, according to the China Earthquake Networks Center. However, the Institute of Care-life issued a 7.7-magnitude earthquake alert just five seconds after the quake struck, causing panic among many users.
The institute used the name of the "China Earthquake Early Warning Network" (an early warning system under the China Earthquake Administration) without authorization to issue a 7.7-magnitude earthquake alert to the public through Honor and Vivo smartphones, as well as Xiaotiancai smartwatches, drawing widespread public attention, said the Sichuan earthquake agency in a statement.
The agency said it had terminated the institute's third-party authorization to access emergency earthquake information services from the China Earthquake Early Warning Network on July 22, 2026.
In response to the false alarm, the Institute of Care-life said that its earthquake early-warning network initially estimated the quake at magnitude 7.7 five seconds after it occurred, before revising the estimate to 6.4 at the sixth second, 3.7 at the seventh second, 4.1 at the eighth second and 3.9 at the 16th second. The estimated magnitude automatically converged to 3.9 by the 17th second after the earthquake, the institute said.
Addressing the significant discrepancy, the Institute of Care-life said that deviations in estimates of an earthquake's magnitude and epicenter are inevitable to some extent, as early-warning information is generated automatically shortly after a quake begins, before the seismic event has ended.
The Institute of Care-life apologized for the inaccurate alert and said it would investigate the cause as soon as possible while improving its technology and services.
Global Times
。 据New Atlas报道，塑料可以是硬的，也可以是软的，但塑料可以同时具有这两种特性吗？得克萨斯大学奥斯汀分校的科学家们一直在探索这个问题，并生产出一种首创的材料，这种材料在某些部分是柔韧的，而在其他部分是坚硬的，他们认为有一天这种材料会被用于柔性电子产品和机器人。在开发这种新型材料时，科学家们从天然材料中获得了灵感，这些材料在某些地方是刚性的，而在其他地方则是柔软和有弹性的。皮肤、肌肉、树木和贝类是该团队提供的几个例子，但是创造出混合强度和灵活性的合成版本是很困难的。以前的方法包括将不同的材料混合在一起，但这有其缺点，成品往往在接缝处散开。研究人员声称，在材料科学的这一分支中，一种新型的类似塑料的材料取得了突破。作为一个起点，化学家们使用了单体，即聚集在一起形成聚合物的小分子。
二 | 在这种情况下，聚合物与常用塑料中的聚合物非常相似，但有一两个特殊的技巧。在测试了十几种候选材料后，科学家们发现了一种催化剂，它可以被整合到单体中，使它们对可见光产生反应，用廉价的蓝色LED来传递。这产生了创造一种半结晶聚合物的效果，其属性类似于橡胶，形成一种坚硬的材料。同时，没有暴露在光线下的区域仍然是柔软和有弹性的。“这是同类材料中的第一种，”化学助理教授和论文的通讯作者Zachariah Page说。“通过应用光来控制结晶，并因此控制材料的物理特性的能力，对于可穿戴电子设备或软体机器人的执行器来说，可能是一种变革。”研究人员称，这种类似塑料的材料的韧性是天然橡胶的10倍，但在不同区域具有不同的物理特性。
三 | 科学家们想象他们的创造有广泛的应用，包括固定可穿戴技术或医疗设备中的电子元件，以及改善机器人的强度和灵活性。研究第一作者Adrian Rylski说：“我们期待着探索应用这种化学方法来制造包含软硬成分的3D物体。”这项研究发表在《科学》杂志上。
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