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ISPDI 2013
CSOE

Satoshi Kawata(Osaka University, Suita, Osaka, Japan)


Plasmonics: exotic nanophotonics beyond the classical limits in optics

Satoshi Kawata
Osaka University, Suita, Osaka, Japan

Abstract
On the surface of metal there exists a form of slow light as evanescent wave associated with collective oscillation of free electrons, called surface plasmonpolaritons.  Such slow light can be used for many applications in nanophotonics science, in particular, nano-imaging and nano-analysis of nanomaterials such as carbon nanotubes, DNA strands and semiconductor devices[1].  In this presentation, I will discuss about the mechanism and the functionality of surface plasmonpolaritons, including wavelength shortening, field enhancement, and spectraltunability [2].  The discussion will extend to the essential limit in plasmonicsand the inventions to realize nanophotonics beyond the plasmonic limit. Some latest results including4-nm resolution imaging with tip pressure on to the nano-materials [3], rod-array non-scanimaging with magnification [4],  nano-imaging of cellular pathways in a living cell [5], and Raman imaging and analysis of strain distribution in a carbonnanotube [6] will be shown with some related topics such as plasmon holography [7] and self-assembling of plasmonicmetamaterials with fractal geometry [8].

[1] S.Kawata, Y. Inouye, P. Verma, Nature Photon.3, 388 (2009).
[2] S. Kawata, Jpn. J. Appl. Phys. 52, 010001 (2013)
[3] T. Yano, et. al., Nature Photon. 3, 473 (2009).
[4] S. Kawata, A. Ono, P. Verma, Nature Photon.2, 438 (2008).
[5] J. Ando, K. Fujita, N. Smith, S. Kawata, Nano Lett.11, 5344 (2011).
[6] T. Yano, et. al, Nature Commun. 4, 10.1038 (2013).
[7] M. Ozaki, J. Kato, S. Kawata, Science 332, 218 (2011).
[8] N. Takeyasu, N. Nishimura, S. Kawata, submitted.

Brief Biography
Satoshi Kawata is a Distinguished Professor of Osaka University, and the President of Japan Society of Applied Physics. He has been the Professor of Department of Applied Physics and Frontier Biosciences in Osaka University since 1993. He has been also a Chief Scientist in RIKEN from 2002 to 2012,the Editor of Optics Communications from 2000 to 2009, the President of Spectroscopical Society of Japan from 2007 to 2008, and the President of Nanophoton Corporation since 2003. He is one of pioneers in near field optics (the inventor of tip-enhanced Raman microscope) and in three-dimensional nano-fabrication (the inventor of two-photon polymerization and isomerization).

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