Thermal sensing with fine spatial resolution is important to the study of many scientific areas. While modern microscopy systems allow easy optical detection at high spatial resolution, their intrinsic functions are mainly focused on imaging but limited in detecting other physical parameters, for example, mapping thermal variations. Here, with a coating of an optical exceptional point structure on a conventional glass slide, we demonstrate a novel low-cost and efficient multifunctional microscope slide, supporting real-time monitoring and mapping of temperature distribution and heat transport in addition to conventional microscopic imaging. The square-root dependency associated with an exceptional point leads to enhanced thermal sensitivity that is critical for the precise measurement of the temperature. With a microscale resolution, real-time thermal mapping is conducted, showing dynamic temperature variation in a spatially-defined area. Our strategy of integrating low-cost and efficient optical sensing technologies on a conventional glass slide is expected to enable simultaneous detection of multiple environmental parameters, thereby leading to new opportunities for improved experimental control in many scientific research disciplines.
Dispersion engineered AlGaAs-on-insulator nanophotonics by distributed feedback
Université Paris-Saclay（巴黎萨克雷大学）；CNRS（法国国家科学研究中心）；Centre for Nanosciences and Nanotechnology（纳米科学与工程中心）；Université Paris Cité（巴黎西岱大学）；Laboratoire Matériaux et Phénomènes Quantiques（材料与量子现象实验室）；Sapienza University of Rome（罗马智慧大学）；Dipartimento di ingegneria elettronica e telecomunicazioni（电子与电信工程系）；Thales Research and Technology
Exceptional point induced by hyperbolicity in an electrostatic spherical shell
International Iberian Nanotechnology Laboratory（国际伊比利亚纳米技术实验室）；University of Lorraine（洛林大学）；University of Minho（米尼奥大学）；University of Southern Denmark（南丹麦大学）
Refractive Index Dispersion Fingerprinting via Scanning-Free Parallel Multi-Wavelength SPR on a Single Aluminum Film
School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology（大连理工大学光电工程学院）；DUT-BSU Joint Institute, Dalian University of Technology（大连理工大学-莫斯科鲍曼国立技术大学联合学院）；Institute of Energy, Higher School of High Voltage Engineering, Peter the Great St. Petersburg Polytechnic University（彼得大帝圣彼得堡理工大学高等电压工程学院能源研究所）
