报告时间：2026年1月8日下午3:00 

报告地点：物质科研楼A309会议室 Room A309 Material Science Building)

报告人： 周佳佳教授悉尼科技大学

报告题目/Title: Upconversion Nanoparticles for Temperature Sensing and Rapid Diagnostics 

摘要/Abstract:

Recent advancements in nanotechnology have created exciting new opportunities to use luminescent nanomaterials in fields such as imaging, sensing, and photonic devices. One group of materials that has attracted particular interest is upconversion nanoparticles (UCNPs). UCNPs have remarkable anti-Stokes emission properties, which means they can absorb low-energy near-infrared (NIR) light and emit it at shorter wavelengths. This feature is especially valuable for biological applications because it enables high signal-to-noise ratio imaging by avoiding interference from the autofluorescence of biological specimens. In this presentation, I will share our research focused on developing UCNPs for nanoscale temperature sensing, a technology that could allow us to monitor temperature at the cellular and even subcellular level . I will also discuss our progress in applying these UCNPs for the rapid detection of specific milk proteins, which has potential applications in dairy products quality control . I will brief mention our work on adapting UCNPs for SARS-CoV-2 antigen detection, demonstrating their potential in rapid diagnostic tests .

报告人简介/Curriculum Vitae:

Dr Jiajia Zhou is a professor at the Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, Australia. She is also an Australian Research Council (ARC) Future Fellow and a National Health and Medical Research Council (NHMRC) Emerging Leadership level 2 Investigator. Her research interests span upconversion photonics, spectroscopy, microscopic imaging, and sensing. She is particularly dedicated to exploring the fundamental physics of upconversion at the single nanoparticle level, as well as their quantum optical properties. She is passionate about harnessing the optical advantages of these nanoparticles to develop technologies for intracellular temperature sensing, rapid COVID-19 antigen tests, and protein detection in the food industry. She has co-authored 120 papers in peer-reviewed journals, including 11 in various Nature publications (2 in Nature, 4 in Nature Photonics, 1 in Nature Methods, and 4 in Nature Communications). She has received a number of prestigious awards, including the 2024 Pawsey Medal, 2023 Vice-Chancellor’s Research Leadership and Development Award, 2022 David Syme Research Award, and 2019 Sturges Prize. She was also shortlisted twice for the Australian Museum Eureka Prizes in 2020 and 2019.