报告题目：Quantum Plasmonics and Hot Carrier Induced Processes
报告时间：上午10:00-12:00，2016年10月13日
报告地点：物理学院新楼五楼大报告厅
报告人：Peter Nordlander （Rice University）
报告摘要：Plasmon resonances with their dramatically enhanced cross sections for light harvesting have found numerous applications in a variety of applications such as single particle spectroscopies, chemical and biosensing, subwavelength waveguiding and optical devices.[1] Recently it has been demonstrated that quantum mechanical effects can have a pronounced influence on the physical properties of plasmons.[2] Examples of such effects is the charge transfer plasmon enabled by conductive coupling (tunneling) between two nearby nanoparticles and nonlocal screening of the plasmonic response of small nanoparticles. One relatively recent discovery is that plasmons can serve as efficient generators of hot electrons and holes that can be exploited in applications. The physical mechanism for plasmon-induced hot carrier generation is plasmon decay. Plasmons can decay either radiatively or non-radiatively with a branching ratio that can be controlled by tuning the radiance of the plasmon mode. Non-radiative plasmon decay is a quantum mechanical process in which one plasmon quantum is transferred to the conduction electrons of the nanostructure by excitation of an electron below the Fermi level of the metal into a state above the Fermi level but below the vacuum level. In particular I will discuss external control of charge transfer plasmons for active plasmonic devices,[3] hot carrier generation, decay and fluorescence,[4] and hot carrier induced processes and applications such as photodetection,[5] phase changing of nearby media,[6] and photocatalysis.[7]
[1] N.J. Halas et al., Adv. Mat. 24(2012)4842; S. Lal et al., Acc. Chem. Res. 45(2012)1887
[2] W.Q. Zhu et al., Nature Commun. 7(2016)11495
[3] C.P. Byers et al., Sci Adv. 1(2015)e1500988; D.C. Marinica et al., ibid. e1501095
[4] A. Manjavacas et al., ACS Nano 8(2014)7630
[5] B.Y. Zheng et al., Nature Commun. 6(2015)7797
[6] Z.W. Li et al., ACS Nano 9(2015)10158
[7] D.F. Swearer et al., PNAS 113(2016)8916; C. Zhang et al., Nano Lett. 16(2016)ASAP
报告人简介：Prof. Peter Nordlander (http://nordlander.rice.edu) obtained his PhD degree in Theoretical Physics at Chalmers University of Technology in Gothenburg in Sweden in1985. After postdoctoral positions at IBM Thomas J. Watson Research Center at Yorktown Heights (USA) and AT&T Bell Laboratories at Murray Hill (USA) and at Rutgers University, he joined the faculty at Rice University in 1989 and is currently Professor of Physics and Astronomy and Professor of Electrical and Computer Engineering. He has been a Visiting Professor at University of Paris, at the Institute of Physics at the Chinese Academy of Sciences, and is currently in the Department of Physics at Peking University. His research background is in theoretical condensed matter and nano physics. His current research is focused on the theoretical and computational modeling of Plasmonics and Nanophotonics phenomena. He is an associate editor of ACS Nano. He is a fellow of APS, AAAS, SPIE, and OSA and is the recipient of the 1999 Charles Duncan Award for Outstanding Academic Achievement (Rice), the 2013 Willis E. Lamb Award for Laser Science and Quantum Optics, and the 2014 Frank Isakson Prize for Optical Effects in Solids. He has published more than 200 refereed articles, given more than 300 invited presentations at international conferences and workshops, has been cited more than 20000 times with a Web of Science h-index in the 70s, and is included in the Thomson-Reuters Highly Cited Researcher list．
邀请人：徐红星教授
