報告題目：Upconversion Nanocrystals: Luminescence Modulation for Nanophotonic Applications
報告人：劉小鋼教授
時間：2018年1月8日（周一）下午16:30-17:30
地點：國際會議中心第五會議室
報告簡介：
The talk will presentLanthanide-doped nanoparticles exhibit unique luminescent properties, including a large Stokes shift, a sharp bandwidth of emission, high resistance to optical blinking, and photobleaching. Uniquely, they can also convert long-wavelength stimulation into short-wavelength emission.These attributes offer the opportunity to develop alternative luminescent labels to organic fluorophores and quantum dots. In recent years, researchers have taken advantage of spectral-conversion nanocrystals in many important biological applications, such as highly sensitive molecular detection and autofluorescence-free cell imaging. With significant progress made over the past several years, we can now design and fabricate nanoparticles that display tailorable optical properties. In particular, we can generate a wealth of color output under single-wavelength excitation by rational control of different combinations of dopants and dopant concentration. By incorporating a set of lanthanide ions at defined concentrations into different layers of a core-shell structure, wehave expanded the emission spectra of the particles to cover almost the entire visible region, a feat barely accessible by conventional bulk phosphors.This talkwill highlight recent advances in the broad utility of upconversion nanocrystals for multimodal imaging, bio-detection, display and photonics.
報告人簡介:
劉小鋼教授現為新加坡國立大學教授，在新加坡科學院材料工程研究所兼任高級研究員，主要從事納米材料制備和自組裝、生物無機化學和超分子化學、催化表面科學、光電太陽能技術、傳感器和生物醫學應用等方面研究。近五年來在紅外上轉換發光材料領域取得了多項重大技術突破，有多項國際發明專利，并在Science、Nature、Nature Materials、Nature Nanotechnology、Nature Communications、Journal of the American Chemical Society、Angewandte Chemie International Edition和Advanced Materials等國際頂級學術期刊上發表論文120多篇，被引用1.7萬多次，最高單篇引用1700多次，連續多年被湯姆森路透集團統計為國際高被引學者，是2016年新加坡科技最高獎——總統科學獎得主，2017年獲新加坡國立大學杰出研究員獎。
