新华社北京1月12日电 美国科研人员从章鱼皮肤的拟态能力中得到启发，研制出能改变表面纹理的新 材料，帮助更加逼真地呈现各种外观。该技术有望用于制造新型显示器、能改变外观的可穿戴设备、擅 长伪装的柔性机器人等。 这种聚合物称为PEDOT:PSS，吸水后会膨胀，在接触异丙醇等液体后会释放水分并收缩，其形态改变 是可逆的。研究人员将聚合物薄膜覆盖在基底上，用电子束辐照改变不同部位聚合物的吸水性，在表面 生成需要的"地形"，精细度可达到微米级别。通过微流控技术，研究人员使聚合物表面接触不同浓度的 异丙醇溶液，就能让"地形"发生改变，呈现出不同纹理。 与以往方法不同的是，该技术可以动态开启和关闭纹理，且在改变纹理时不改变颜色，从而实现逼真的 动态外观。由于所用的基板是柔性的，这种薄膜系统可以轻易集成到不同外形尺寸中，用于多种产品。 （完） 章鱼等头足类动物能精细控制嵌在皮肤中的肌肉纤维，调整皮肤表面对光线的散射作用，使原本光滑的 皮肤迅速呈现出与岩石等环境相同的表面纹理，结合改变颜色的能力，实现完美隐身。 美国斯坦福大学的研究团队从中得到启发，利用一种聚合物材料吸收和释放水分改变形态的特性，研制 出了可分别调整颜色和纹 ...

Core Viewpoint - The public science day event organized by the Chinese Academy of Sciences successfully engaged over 5,000 attendees, showcasing the intersection of science and entertainment through interactive experiments and demonstrations [1][2][3][4] Group 1: Event Highlights - The event featured a variety of interactive science experiments, including a performance titled "Nezha is Here! Unlocking the Superpowers in Movies," which explained the scientific principles behind mythical abilities [1] - Attendees experienced hands-on demonstrations, such as water-repellent paper made from modified cellulose, showcasing innovative materials inspired by nature [1][2] - The "Liquid Nitrogen Ice Cream" booth attracted significant attention, illustrating the fun side of science through culinary applications [2] Group 2: Scientific Engagement - The event included over 30 interactive experiments covering diverse scientific fields such as photochemistry, bionic materials, low-temperature physics, and crystal lasers, making complex scientific concepts accessible to the public [2] - A "Low-Temperature Cryotherapy Experience Chamber" allowed participants to experience extreme cold safely, highlighting the practical applications of scientific research in sports recovery [3] - The event fostered dialogue between researchers and the public, transforming complex scientific work into engaging and relatable experiences [3][4] Group 3: Impact on Public Perception - The event inspired young attendees, with children expressing aspirations to invent advanced materials, indicating a successful cultivation of scientific curiosity and ambition [4] - The interactive nature of the event helped demystify scientific research, making it more approachable and enjoyable for the general public [3][4]

Group 1 - The event showcased over 30 scientific experiments covering various disciplines such as photochemistry, bionic materials, low-temperature physics, and laser technology [1] - The theme of the event was "Inquire with Science, Ignite a New Future," highlighting its role as a significant platform for public engagement with science [3] - The event has been held annually since 2005, evolving into a nationwide brand for science popularization with high participation and social impact [3] Group 2 - Interactive activities included a 3D visualization project for protein structures and a treasure hunt game for children to learn science [2] - Public engagement was enhanced through hands-on experiences, such as assembling batteries and understanding targeted drug models [2] - Prominent scientists, including academicians, participated in lectures and discussions, sharing cutting-edge research and inspiring youth to pursue scientific careers [2][3]