Enhancing Passive Radiative Cooling Films with Hollow Yttrium‐Oxide Spheres Insights from FDTD Simulation
Jeehoon Yu, Chanil Park, Byeongjin Kim, Sohyeon Sung, Hyun Kim, Jaeho Lee, Yong Seok Kim, Youngjae Yoo
Abstract
Front Cover: This cover image illustrates the integration of Hollow Yttrium-Oxide Spheres (HYSs) within a PDMS matrix, revealing their impact on passive radiative cooling. By embedding HYSs, the PDMS shows a notable increase in solar reflectivity and LWIR emissivity, effectively reducing solar heat gain while maximizing thermal radiation. Experimental validation and FDTD simulations confirm the optical benefits of HYS-infused PDMS, highlighting its viability for energy-efficient cooling. Our findings suggest that such composites are promising candidates for advanced passive cooling applications across diverse thermal management fields. More details can be found in article 2400770 by Yong Seok Kim, Youngjae Yoo, and co-workers.