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个人简介

B.Sc., 2001 (University of California, Berkeley, USA); Ph.D., 2006 (Massachusetts Institute of Technology, USA); Postdoctoral associate, 2006 - (Stanford University, USA)

研究领域

Nanoscience

Semiconductor nanocrystals (NCs) are essentially molecular clusters of semiconductor material measuring several nanometers across in diameter. At these length scales, quantum confinement effects dominate, resulting in their size-dependent absorption and emission that can qualitatively be understood by considering a "particle-in-a-box" model. These unique optical properties of NCs have recently been exploited in a myriad of ways, from biological imaging to light-emission diodes (LEDs). My earlier research efforts focused on incorporating highly fluorescent semiconductor NCs into sol-gel derived matrices (i.e. silica and titania) in order to investigate their nonlinear optical properties, in particular stimulated emission. These endeavors led to both technological advances such as emission-tunable room-temperature semiconductor NC lasers as well as more fundamental discoveries such as the nature of multiexcitonic emission in semiconductor NCs. As with most current efforts in the field of nanoscience, these research efforts are highly multidisciplinary in nature, bringing together techniques used in materials science, organometallic chemistry as well as optical physics.

近期论文

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N Mishra, J Lian, S Chakrabortty, M Lin, Y Chan*. “Unusual Selectivity of Metal Deposition on Tapered Semiconductor Nanostructures” Chem. Mater., 2012, DOI 10.1021/cm300161m J Lian, Y Xu, M Lin, Y Chan*. “Aqueous Phase Reactions on Hollow Silica Encapsulated Semiconductor Nanoheterostructures”, J. Am. Chem. Soc., 2012, DOI 10.1021/ja301805u Y Liao, G Xing, N Mishra, T C Sum, Y Chan*. “Low Threshold, Amplified Spontaneous Emission from Core Seeded Semiconductor Nanotetrapods Incorporated into a Sol-Gel Matrix” Adv. Mater., 2012, DOI 10.1002/adma.201200121 G Xing, S Chakrabortty, S W Ngiam, Y Chan ; T C Sum. "Three-Photon Absorption in Seeded CdSe/CdS Nanorod Heterostructures" J. Phys. Chem. C, 2011, 115, 17711 S Chakrabortty, G Xing, Y Xu, S W Ngiam, N Mishra, T C Sum, Y Chan*. “Directed Assembly of Fluorescent Au-tipped CdSe Seeded CdS Nanorods” Small, 2011, 7, 2847 X Li, J Lian, M Lin, Y Chan*. “Light-induced Selective Deposition of Metals on Gold-Tipped CdSe Seeded CdS Nanorods” J. Am. Chem. Soc., 2011, 133, 672 G Xing, S Chakrabortty, K L Chou, N Mishra, C H A Huan, Y Chan, T C Sum. “Enhanced Tunability of the Multi-photon Absorption Cross-Section in Seeded CdSe/CdS Nanorod Heterostructures” Appl. Phys. Lett., 2010, 97, 061112 Y Wu, S Chakrabortty, R A Gropeanu, J Wilhelmi, Y Xu, K S Er, S L Kuan, K Koynov, Y Chan*, T Weil*. “pH-Responsive Quantum Dots via an Albumin Polymer Surface Coating” J. Am. Chem. Soc., 2010, 132, 5012 S Chakrabortty, J A Yang, Y M Tan, N Mishra, Y Chan*. “Asymmetric Dumbbells from Selective Deposition of Metals on Seeded Semiconductor Nanorods” Angew. Chem. Int. Ed., 2010, 49, 2888 Y Chan, P T Snee, J M Caruge, B K H Yen, G P Nair, D G Nocera, M G Bawendi. "A solvent stable nanocrystal-silica composite laser" J. Am. Chem. Soc., 2006, 128, 3146.

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