報(bào)告題目：Upconversion Nanocrystals: Luminescence Modulation for Nanophotonic Applications
報(bào)告人：劉小鋼教授
時(shí)間：2018年1月8日（周一）下午16:30-17:30
地點(diǎn)：國(guó)際會(huì)議中心第五會(huì)議室
報(bào)告簡(jiǎn)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(bào)告人簡(jiǎn)介:
劉小鋼教授現(xiàn)為新加坡國(guó)立大學(xué)教授，在新加坡科學(xué)院材料工程研究所兼任高級(jí)研究員，主要從事納米材料制備和自組裝、生物無(wú)機(jī)化學(xué)和超分子化學(xué)、催化表面科學(xué)、光電太陽(yáng)能技術(shù)、傳感器和生物醫(yī)學(xué)應(yīng)用等方面研究。近五年來(lái)在紅外上轉(zhuǎn)換發(fā)光材料領(lǐng)域取得了多項(xiàng)重大技術(shù)突破，有多項(xiàng)國(guó)際發(fā)明專(zhuān)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(guó)際頂級(jí)學(xué)術(shù)期刊上發(fā)表論文120多篇，被引用1.7萬(wàn)多次，最高單篇引用1700多次，連續(xù)多年被湯姆森路透集團(tuán)統(tǒng)計(jì)為國(guó)際高被引學(xué)者，是2016年新加坡科技最高獎(jiǎng)——總統(tǒng)科學(xué)獎(jiǎng)得主，2017年獲新加坡國(guó)立大學(xué)杰出研究員獎(jiǎng)。
