生物医学工程英语

领域：仿生，传感器，软体机器人

Stimuli-responsive structural coloration allows the color change of soft substrates in response to environmental stimuli such as heat, humidity, and solvents. Such color-changing systems enable smart soft devices, such as the camouflageable skin of soft robots or chromatic sensors in wearable devices. However, individually and independently programmable stimuli-responsive color pixels remain significant challenges among the existing color-changing soft materials and devices, which are crucial for dynamic display. Inspired by the dual-color concavities on butterfly wings, a morphable concavity array to pixelate the structural color of two-dimensional photonic crystal elastomer and achieve individually and independently addressable stimuli-responsive color pixels is designed. The morphable concavity can convert its surface between concave and flat upon changes in the solvent and temperature, accompanied by angle-dependent color-shifting. Through multichannel microfluidics, the color of each concavity can be controllably switched. Based on the system, the dynamic display by forming reversibly editable letters and patterns for anti-counterfeiting and encryption are demonstrated. It is believed that the strategy of pixelating optical properties through locally altering surface topography can inspire the design of new transformable optical devices, such as artificial compound eyes or crystalline lenses for biomimetic and robotic applications.

刺激响应结构着色允许软基材在响应环境刺激(如热、湿度和溶剂)时发生颜色变化。这种变色系统使智能软设备成为可能，例如软机器人的可伪装皮肤或可穿戴设备中的彩色传感器。然而，在现有的对动态显示至关重要的变色软材料和器件中，单独和独立可编程的刺激响应的颜色像素仍然是重大挑战。以蝴蝶翅膀上的双色凹纹为灵感，设计了一种可变形凹纹阵列，对二维光子晶体弹性体的结构颜色进行像素化处理，实现了单独和独立寻址的刺激响应颜色像素。可变形的凹面可以随着溶剂和温度的变化而在凹面与平面之间转换，并伴随角度相关的变色。通过多通道微流体，每个凹面的颜色可以控制切换。在该系统的基础上，演示了通过形成可逆编辑的字母和图案实现防伪和加密的动态显示。人们相信，通过局部改变表面形貌来像素化光学特性的策略可以激发新的可转换光学器件的设计，例如用于仿生和机器人应用的人工复眼或晶体透镜。

内容结束。

CRISPR发音：参考单词 crisper

语料来源：Pan, Y., Li, C., Hou, X., Yang, Z., Li, M., Shum, H. C., Pixelating Responsive Structural Color via a Bioinspired Morphable Concavity Array (MoCA) Composed of 2D Photonic Crystal Elastomer Actuators. Adv. Sci. 2023, 2300347. https://doi.org/10.1002/advs.202300347

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