直播时间：2025年10月10日（周五）20:00-21:30

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北京时间2025年10月10日晚八点，iCANX Talks 第248期邀请到了芝加哥大学助理教授Po-Chun Hsu担任主讲嘉宾，阿卜杜拉国王科技大学教授Qiaoqiang Gan，韩国科学技术院特聘教授Young Min Song，宾夕法尼亚州立大学助理教授Linxiao Zhu担任研讨嘉宾，北京大学教授Haixia Zhang担任主持人。

这将是一场汇聚顶尖学者的盛会，共同探讨前沿科技与学术挑战！更多精彩，敬请期待！

【嘉宾介绍】

Po-Chun Hsu

‍芝加哥大学

Active and Passive Radiative Thermoregulation for Human-Building-Energy Nexus

【Abstract】

The "human-building-energy nexus" describes the interconnected system in which human behavior, building components, and energy consumption interact to influence overall building performance, occupant well-being, and environmental sustainability. Thermoregulation plays one of the most critical roles in the human-building-energy nexus because of the necessity to maintain thermal comfort. Just like the Earth maintains its equilibrium temperature at the balance solar heat gain and radiative heat loss, immense opportunities lie in understanding and manipulating materials’ optical properties, which can originate from multiple length scales, from free charge carriers and the bound vibrational mode to nanocavity resonances. Meanwhile, electrochemistry is a powerful tuning knob for inducing drastic optical property change, varying the carrier density or even triggering a phase transformation in an electrically addressable manner, which is particularly desirable in many energy and sustainability applications where tunable range, scalability, and non-volatility are crucial. Integrating with metasurface concepts will provide additional degrees of freedom to boost performance and achieve multifunctional control. In this talk, I will present our research group’s recent progress in three material systems: (i) Wearable photon-engineered textile for multispectral and multifunctional radiative heating and cooling. (ii) Kirigami- and metasurface-enhanced wearable variable emitter with ultra-high emissivity contrast. (iii) Reversible metal electrodeposition for solar and mid-infrared control for all-year-round renewable thermoregulation for net-zero-energy buildings.

“人 - 建筑 - 能量联系”描述了人类行为、建筑构件和能源消耗相互作用以影响整体建筑性能、居住者福祉和环境可持续性的相互联系系统。由于维持热舒适性的必要性，热调节在人 - 建筑 - 能量联系中起着最关键的作用之一。就像地球通过平衡太阳热量吸收和辐射热量损失来维持其平衡温度一样，理解并操纵材料的光学性质（这些性质可以源于多个长度尺度，从自由载流子和束缚振动模式到纳米腔共振）蕴含着巨大的机会。与此同时，电化学是一个强大的调节工具，能够以电控的方式诱导光学性质的剧烈变化，改变载流子密度，甚至触发相变，这在许多能源和可持续性应用中特别受欢迎，因为这些应用需要可调范围大、可扩展性强和非易失性。与超表面概念相结合将提供额外的自由度，以提升性能并实现多功能控制。在这次演讲中，我将介绍我们研究小组在三种材料体系中的最新进展：（i）用于多光谱和多功能辐射加热和冷却的可穿戴光子工程纺织品。（ii）具有超高发射率对比度的剪纸和超表面增强型可穿戴可变发射器。（iii）用于全年可再生热调节的可逆金属电沉积，以实现净零能耗建筑的太阳能和中红外控制。

【BIOGRAPHY】

Professor Po-Chun Hsu is an Assistant Professor at the Pritzker School of Molecular Engineering at the University of Chicago, focusing on light- and heat-managing materials for energy, sustainability, and health. He earned his PhD in Materials Science and Engineering and was a postdoctoral researcher in Mechanical Engineering, both at Stanford University. Before joining the University of Chicago, he was an Assistant Professor of Mechanical Engineering and Materials Science at Duke University from 2019 to 2022. He is a recipient of the NSF CAREER Award, shortlist for the Falling Walls Science Breakthrough of the Year 2023, EcoMat Young Researcher Award, Ralph E. Powe Junior Faculty Enhancement Awards, MIT Technology Review Innovators Under 35 (China), Clarivate Analytics Highly Cited Researchers, and Sony Faculty Innovation Award. His project in cooling textiles was selected as Top Ten World-Changing Ideas by Scientific American.

Po-Chun Hsu教授是芝加哥大学普利茨克分子工程学院的助理教授，专注于用于能源、可持续性和健康的光和热管理材料。他在斯坦福大学获得材料科学与工程博士学位，并在该校从事机械工程博士后研究。在加入芝加哥大学之前，他于2019年至2022年担任杜克大学机械工程与材料科学助理教授。他是美国国家科学基金会职业奖的获得者，入围2023年“破墙科学突破奖”候选人名单，获得EcoMat青年研究者奖、Ralph E. Powe青年教师提升奖、麻省理工学院技术评论35岁以下创新者（中国）、Clarivate Analytics高被引学者和索尼教员创新奖。他的冷却纺织品项目被《科学美国人》选为十大改变世界的创意。