Taking Photos of Dark Matter: Detecting Dark Matter with Semiconductors

by Peizhi Du (University of Science and Technology of China)

Wednesday 24 Sep 2025, 15:00 → 17:00 Asia/Shanghai

图书馆楼319会议室

摘要：Dark matter remains one of the most profound mysteries in fundamental physics, with extensive efforts underway to detect it. In this talk, I will highlight recent progress in dark matter direct detection with semiconductors. Current experiments leverage CCDs to detect potential dark matter signals but face challenges from unexplored background sources. I will discuss the origins of these backgrounds and introduce our new proposed device, the Dual-sided CCD (DCCD), designed to significantly reduce these limitations and enhance detection sensitivity. Furthermore, I will demonstrate doped semiconductors and the infrared detectors on the James Webb Space Telescope can explore previously inaccessible regions of the dark matter parameter space.

个人简介：杜佩之，特任研究员，入选中科院人才青年项目。2019年博士毕业于美国马里兰大学，2025年加入中国科学技术大学。长期致力于粒子物理唯象理论研究，关注超越标准模型的新物理，包括暗物质的直接探测以及天体物理和宇宙学观测中寻找新物理。相关研究成果发表在Nature Commun., Physical Review X, Physical Review Letters , Journal of High Energy Physics, Physical Review D 等国际重要学术期刊。