Dr. Satoshi Kawata Profile

Dr. Satoshi Kawata

Professor Emeritus at Nanophoton Corp

SPIE Involvement:

Conference Program Committee | Conference Co-Chair | Author | Editor

Publications (95)

Proceedings Article | 4 October 2024 Presentation + Paper

Fluorescence-free Raman spectral measurement using a UV laser

Yusuke Shiozaki, Satoshi Kawata, Katsumasa Fujita

Proceedings Volume 13115, 1311504 (2024) https://doi.org/10.1117/12.3028856

KEYWORDS: Raman spectroscopy, Fluorescence, Ultraviolet radiation, Fluorescence intensity, Laser irradiation

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Proceedings Article | 3 October 2022 Presentation

Exploiting fluctuation for micro/nano imaging and fabrication (Conference Presentation)

Satoshi Kawata

Proceedings Volume PC12212, PC1221205 (2022) https://doi.org/10.1117/12.2635999

KEYWORDS: Plasmonics, Imaging systems, Confocal microscopy, Sensors, Raman spectroscopy, Optical benches, Microscopy, Image resolution, Fractal analysis, Electronics

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Proceedings Article | 19 February 2020 Paper

Alkyne-tag SERS imaging for visualizing small molecule drugs in live cells

Kota Koike, Kazuki Bando, Jun Ando, Nicholas Smith, Kosuke Dodo, Satoshi Kawata, Mikiko Sodeoka, Katsumasa Fujita

Proceedings Volume 11219, 112190D (2020) https://doi.org/10.1117/12.2545872

KEYWORDS: Molecules, Raman spectroscopy, Gold, Nanoparticles, Raman scattering, Surface enhanced Raman spectroscopy, Signal detection, Microscopy, Live cell imaging, Visualization

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Proceedings Article | 10 September 2019 Open Access

Random-walk scanning microscopy for fast molecular image acquisition (Conference Presentation)

Satoshi Kawata

Proceedings Volume 11098, 1109803 (2019) https://doi.org/10.1117/12.2530074

KEYWORDS: Microscopy, Image acquisition, Microscopes, Raman scattering, Stochastic processes, Laser scanners, 3D acquisition, 3D image processing, Scattering, Molecules

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Proceedings Article | 18 September 2018 Open Access

Functional nanoparticles explore a living cell for intracellular dynamics and molecular distribution (Conference Presentation)

Satoshi Kawata

Proceedings Volume 10740, 1074004 (2018) https://doi.org/10.1117/12.2323777

KEYWORDS: Nanoparticles, Particles, 3D image processing, Molecules, Gold, Plasmonics, Raman spectroscopy, Microscopy, Optical trapping, Laser applications

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Proceedings Article | 9 May 2017 Open Access

Optical 3D Nano-fabrication: Drawing or Growing? (Conference Presentation)

Satoshi Kawata

Proceedings Volume 9738, 973802 (2017) https://doi.org/10.1117/12.2236681

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Proceedings Article | 9 February 2017 Paper

Surface-enhanced Raman scattering (SERS) imaging of alkyne-tagged small molecule drug in live cells with endocytosed gold nanoparticles

Jun Ando, Takumasa Sekiya, Den Ka, Hiroyuki Yamakoshi, Kosuke Dodo, Mikiko Sodeoka, Satoshi Kawata, Katsumasa Fujita

Proceedings Volume 10046, 1004606 (2017) https://doi.org/10.1117/12.2256126

KEYWORDS: Nanoparticles, Raman scattering, Surface enhanced Raman spectroscopy, Microscopy, Live cell imaging, Glasses, Molecular spectroscopy

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Proceedings Article | 10 November 2016 Presentation

Optical tweezing by photochemistry (Conference Presentation)

Zouheir Sekkat, Satoshi Kawata, Yasushi Inouye, Hidekazu Ishitobi

Proceedings Volume 9922, 99221M (2016) https://doi.org/10.1117/12.2236628

KEYWORDS: Optical trapping, Photochemistry, Optical manipulation, Optical tweezers, Diffusion, Optical micromanipulation, Current controlled current source

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Proceedings Article | 9 November 2016 Presentation

Fano resonances arising from coupled surface plasmon polariton and waveguide modes (Conference Presentation)

Zouheir Sekkat, Shinji Hayashi, Dmitry Nesterenko, Anouar Rahmouni, Hidekazu Ishitobi, Yasushi Inouye, Satoshi Kawata

Proceedings Volume 9921, 99210K (2016) https://doi.org/10.1117/12.2236682

KEYWORDS: Surface plasmon polaritons, Waveguide modes, Planar waveguides, Electromagnetism, Plasmonics, Scientific research, Current controlled current source

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Proceedings Article | 3 November 2016 Presentation

On the theory of photomigration (Conference Presentation)

Zouheir Sekkat, Satoshi Kawata, Hidekazu Ishitobi, Yasushi Inouye

Proceedings Volume 9939, 993908 (2016) https://doi.org/10.1117/12.2236623

KEYWORDS: Polymers, Optical manipulation, Optical trapping, Polarization, Scientific research, Organic materials, Current controlled current source

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Proceedings Article | 3 November 2016 Presentation

Deep-UV plasmonics of indium (Conference Presentation)

Yasuaki Kumamoto, Yuika Saito, Atsushi Taguchi, Mitsuhiro Honda, Satoshi Kawata

Proceedings Volume 9926, 99260J (2016) https://doi.org/10.1117/12.2238896

KEYWORDS: Deep ultraviolet, Ultraviolet radiation, Indium, Plasmonics, Imaging spectroscopy, Aluminum, Metals, Silica, Lithography, Spectroscopy

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Proceedings Article | 3 November 2016 Presentation

Structured illumination microscopy for vibrational molecular imaging (Conference Presentation)

Kozue Watanabe, Almar Palonpon, Nicholas Smith, Liang-da Chiu, Atsushi Kasai, Hitoshi Hashimoto, Satoshi Kawata, Katsumasa Fujita

Proceedings Volume 9925, 992504 (2016) https://doi.org/10.1117/12.2239007

KEYWORDS: Raman spectroscopy, Microscopy, Spatial resolution, Microscopes, Raman scattering, Laser imaging, Spatial frequencies, Image resolution, Resolution enhancement technologies, Molecular imaging

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Proceedings Article | 9 December 2015 Paper

Alkyne-tag Raman imaging of bio-active small molecules in live cells

Jun Ando, Almar Palonpon, Hiroyuki Yamakoshi, Kosuke Dodo, Satoshi Kawata, Mikiko Sodeoka, Katsumasa Fujita

Proceedings Volume 9792, 979207 (2015) https://doi.org/10.1117/12.2207554

KEYWORDS: Raman spectroscopy, Molecules, Microscopy, Visualization, Raman scattering, Target detection, Live cell imaging, Molecular imaging, Proteins, Argon, Biomedical optics, Imaging systems

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Proceedings Article | 5 October 2015 Presentation

Nonlinear fluorescence probe using photoinduced charge separation (Presentation Recording)

Kentaro Mochizuki, Lanting Shi, Shin Mizukami, Masahito Yamanaka, Mamoru Tanabe, Wei-Tao Gong, Almar Palonpon, Shogo Kawano, Satoshi Kawata, Kazuya Kikuchi, Katsumasa Fujita

Proceedings Volume 9554, 95540T (2015) https://doi.org/10.1117/12.2190721

KEYWORDS: Luminescence, Molecules, Microscopes, Visible radiation, Spatial resolution, Two photon excitation microscopy, Diffraction, Nonlinear response, Super resolution microscopy, Light

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SPIE Journal Paper | 3 August 2015 Open Access

Visible-wavelength two-photon excitation microscopy for fluorescent protein imaging

Masahito Yamanaka, Kenta Saito, Nicholas Smith, Yoshiyuki Arai, Kumiko Uegaki, Yasuo Yonemaru, Kentaro Mochizuki, Satoshi Kawata, Takeharu Nagai, Katsumasa Fujita

JBO, Vol. 20, Issue 10, 101202, (August 2015) https://doi.org/10.1117/12.10.1117/1.JBO.20.10.101202

KEYWORDS: Luminescence, Deep ultraviolet, Absorption, Spatial resolution, Confocal microscopy, Two photon excitation microscopy, Fluorescent proteins, Visible radiation, Objectives, Point spread functions

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Proceedings Article | 4 March 2014 Paper

Reverse saturable scattering of a single gold nanoparticle

Hsuan Lee, Hsueh-Yu Wu, Yen-Ta Huang, Tung-Yu Su, Yasuo Yonemaru, Masahito Yamanaka, Ryosuke Oketani, Satoshi Kawata, Satoru Shoji, Katsumasa Fujita, Shi-Wei Chu

Proceedings Volume 8950, 895017 (2014) https://doi.org/10.1117/12.2039107

KEYWORDS: Scattering, Plasmonics, Gold, Confocal microscopy, Absorption, Nanoparticles, Laser scattering, Microscopes, Received signal strength, Super resolution

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Proceedings Article | 3 March 2014 Paper

Size and wavelength dependency of saturable scattering by a single gold nanosphere embedded in dielectric material

Yen-Ta Huang, Hsueh-Yu Wu, Hsuan Lee, Ryosuke Oketani, Yasuo Yonemaru, Tung-Yu Su, Masahito Yamanaka, Satoshi Kawata, Satoru Shoji, Katsumasa Fujita, Shi-Wei Chu

Proceedings Volume 8957, 89570U (2014) https://doi.org/10.1117/12.2039125

KEYWORDS: Scattering, Mie scattering, Gold, Laser scattering, Nanoparticles, Nonlinear optics, Satellite navigation systems, Dielectrics, Plasmonics, Reflectivity

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SPIE Journal Paper | 2 December 2013 Open Access

Saturated excitation microscopy for sub-diffraction-limited imaging of cell clusters

Masahito Yamanaka, Yasuo Yonemaru, Shogo Kawano, Kumiko Uegaki, Nicholas Smith, Satoshi Kawata, Katsumasa Fujita

JBO, Vol. 18, Issue 12, 126002, (December 2013) https://doi.org/10.1117/12.10.1117/1.JBO.18.12.126002

KEYWORDS: Microscopy, Confocal microscopy, Luminescence, Spatial resolution, Signal detection, 3D image processing, Point spread functions, Glasses, Optical transfer functions, Demodulation

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Proceedings Article | 5 March 2013 Paper

Two photon polymerization lithography for 3D microfabrication of single wall carbon nanotube/polymer composites

Shota Ushiba, Satoru Shoji, Preeya Kuray, Kyoko Masui, Junichiro Kono, Satoshi Kawata

Proceedings Volume 8613, 86130Y (2013) https://doi.org/10.1117/12.2005721

KEYWORDS: Composites, Lithography, Raman spectroscopy, Fabrication, Two photon polymerization, Polymers, Carbon, Nanolithography, Solids, Nanocomposites

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Proceedings Article | 22 February 2013 Paper

Polarised Raman imaging of living cells for chemical contrast manipulation

Liang-da Chiu, Almar Palonpon, Keisaku Hamada, Satoshi Kawata, Mikiko Sodeoka, Katsumasa Fujita

Proceedings Volume 8587, 858720 (2013) https://doi.org/10.1117/12.2002826

KEYWORDS: Raman spectroscopy, Polarization, Resonance enhancement, Quartz, Imaging spectroscopy, Raman scattering, Spectroscopy, Laser scattering, Chemical analysis, Proteins

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Proceedings Article | 21 February 2013 Paper

Plasmon saturation induced super-resolution imaging

Hsuan Lee, Tung-Yu Su, Yasuo Yonemaru, Ming-Ying Lee, Masahito Yamanaka, Ko-Fan Huang, Satoshi Kawata, Katsumasa Fujita, Shi-Wei Chu

Proceedings Volume 8597, 85970P (2013) https://doi.org/10.1117/12.2003815

KEYWORDS: Scattering, Laser scattering, Modulation, Microscopy, Super resolution, Plasmonics, Optical resolution, Point spread functions, Satellite navigation systems, Luminescence

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Proceedings Article | 21 February 2013 Paper

Dynamic SERS imaging with gold nanoparticles transported in a living cell

Katsumasa Fujita, Jun Ando, Nicholas Smith, Satoshi Kawata

Proceedings Volume 8597, 859707 (2013) https://doi.org/10.1117/12.2005820

KEYWORDS: Surface enhanced Raman spectroscopy, Nanoparticles, Raman spectroscopy, Gold, Particles, Temporal resolution, Molecules, Signal detection, Cameras, Microscopes

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Proceedings Article | 15 October 2012 Paper

Surface-plasmon holography with white light illumination

Miyu Ozaki, Jun-ichi Kato, Satoshi Kawata

Proceedings Volume 8455, 84550K (2012) https://doi.org/10.1117/12.930161

KEYWORDS: Holograms, Silver, Holography, 3D image reconstruction, Diffraction, Metals, Silica, Photoresist materials, Dispersion, Modulation

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Proceedings Article | 9 October 2012 Paper

Femtosecond laser fabrication of gold nanorod/polymer composite microstructures

Kyoko Masui, Satoru Shoji, Shota Ushiba, Xuan-Ming Duan, Satoshi Kawata

Proceedings Volume 8457, 84571Y (2012) https://doi.org/10.1117/12.930401

KEYWORDS: Gold, Nanolithography, Femtosecond phenomena, Composites, Plasmonics, Nanoparticles, Polymers, Metals, Laser damage threshold, Nanorods

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Proceedings Article | 9 October 2012 Paper

Saturable scattering of localized surface plasmon resonance in a single gold nanoparticle

Tung-Yu Su, Yasuo Yonemaru, Masahito Yamanaka, Ming-Ying Lee, Hsuan Lee, Satoshi Kawata, Katsumasa Fujita, Shi-Wei Chu

Proceedings Volume 8457, 845713 (2012) https://doi.org/10.1117/12.929120

KEYWORDS: Scattering, Gold, Nanoparticles, Laser scattering, Surface plasmons, Electrons, Plasmons, Nanostructures, Particles, Electromagnetism

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SPIE Journal Paper | 3 July 2012 Open Access

Deep ultraviolet resonant Raman imaging of a cell

Yasuaki Kumamoto, Atsushi Taguchi, Satoshi Kawata, Nicholas Smith

JBO, Vol. 17, Issue 7, 076001, (July 2012) https://doi.org/10.1117/12.10.1117/1.JBO.17.7.076001

KEYWORDS: Raman spectroscopy, Deep ultraviolet, Microscopy, Molecules, Raman scattering, Image processing, Microscopes, Molecular spectroscopy, Light scattering, Scattering

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Proceedings Article | 16 February 2012 Paper

Femtosecond laser-assisted photobleaching of single-wall carbon nanotubes

Satoru Shoji, Hideaki Kobayashi, Thomas Rodgers, Satoshi Kawata

Proceedings Volume 8245, 82450C (2012) https://doi.org/10.1117/12.908090

KEYWORDS: Luminescence, Femtosecond phenomena, Carbon nanotubes, Continuous wave operation, Laser irradiation, Spectroscopy, Absorption, Semiconductors, Objectives, Oxidation

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Proceedings Article | 9 February 2012 Paper

Raman imaging of alkyne as a small tag for biological molecules

Katsumasa Fujita, Hiroyuki Yamakoshi, Kosuke Dodo, Almar Palonpon, Masaya Okada, Jun Ando, Satoshi Kawata, Mikiko Sodeoka

Proceedings Volume 8225, 822515 (2012) https://doi.org/10.1117/12.907984

KEYWORDS: Raman spectroscopy, Molecules, Raman scattering, Fluorescent markers, Microscopy, Microscopes, Light scattering, Molecular biology, Carbon, Confocal microscopy

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Proceedings Article | 8 September 2011 Open Access

Single-, two-, and multi-photon driven molecular motion and nanopatterning in azo-polymer films

Zouheir Sekkat, Hidekazu Ishitobi, Mamoru Tanabe, Tsunemi Hiramatsu, Satoshi Kawata

Proceedings Volume 8113, 81130N (2011) https://doi.org/10.1117/12.890511

KEYWORDS: Polymers, Polarization, Polymer thin films, Atomic force microscopy, Near field, Near field optics, Diffraction, Absorption, Optical lithography, Glasses

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We review our work on nanopatterning in azo-polymer films by single, two- and multi-phopton driven molecular motion in solid bulk polymer. It is now known that light induced molecular movement occurs below the polymer glass transition temperature by chromophores photoisomerization via either linear or nonlinear absorption, and in this paper we will show that nanoscale polymer movement is induced by a tightly focused laser beam in an azo-polymer film just at the diffraction limit of light. The deformation pattern which is produced by photoisomerization of the azo dye is strongly dependent on the incident laser polarization and the longitudinal focus position of the laser beam along the optical axis. The anisotropic nanofluidity of the polymer film and the optical gradient force played important roles in the light induced polymer movement. We explored the limits of the size of the photo-induced deformation, and we found that the deformation depends on the laser intensity and the exposure time. The smallest deformation size achieved was 200 nm in full width of half maximum; a value which is nearly equal to the size of the diffraction limited laser spot. Furthermore, a nano protrusion was optically induced on the surface of the films, beyond the limit of light diffraction, by metal tip enhanced near-filed illumination. A silver coated tip was located inside the diffraction limited spot of a focused laser beam (460 nm), and an enhanced near-field, with 30 nm light spot, was generated in the vicinity of the tip due to localized surface plasmons. The incident light intensity was carefully regulated to induce surface nanodeformation by such a near-field spot. A nano protrusion with 47 nm full width of half maximum and 7 nm height was induced. The protrusion occurs because the film is attracted towards the tip end during irradiation. At the top of the protrusion, an anisotropic nanomovement of the polymer occurs in a direction nearly parallel to the polarization of the incident light, and suggests the existence at the tip end of not only a longitudinal, i.e., along the tip long axis, but also a lateral component of the electric field of light. The azo-polymer film helps map the electric field in the close vicinity of the tip. We also report on two-photon patterning of the films. Exposure of azo polymer films, which absorb in the visible range (λ_max = 480 nm), to intense 920 nm irradiation leads to polarization dependent patterning which are associated with polymer nanomovement caused by photoselective two-photon cis ↔ trans isomerization, while irradiation at 780 nm induces multi-photon bleaching of the azo chromophore. These wavelengths hit bleaching and isomerization pathways in the chromophore, respectively.

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Proceedings Article | 18 September 2009 Paper

Magnified color imaging through plasmonic nanolens

Satoshi Kawata, Prabhat Verma

Proceedings Volume 7392, 739219 (2009) https://doi.org/10.1117/12.826627

KEYWORDS: Plasmons, Silver, Image enhancement, Color imaging, Plasmonics, Image resolution, Near field optics, Visible radiation, Radio propagation, Nanorods

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Proceedings Article | 4 March 2009 Paper

Imaging properties of saturated excitation (SAX) microscopy

Shogo Kawano, Masahito Yamanaka, Katsumasa Fujita, Nicholas Smith, Satoshi Kawata

Proceedings Volume 7184, 718415 (2009) https://doi.org/10.1117/12.809108

KEYWORDS: Luminescence, Point spread functions, Microscopy, Spatial resolution, Confocal microscopy, Modulation, Molecules, Optical transfer functions, Microscopes, Demodulation

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Proceedings Article | 4 March 2009 Paper

Biological imaging beyond the diffraction limit by saturated excitation (SAX) microscopy

M. Yamanaka, S. Kawano, K. Fujita, N. Smith, S. Kawata

Proceedings Volume 7184, 718414 (2009) https://doi.org/10.1117/12.809075

KEYWORDS: Luminescence, Microscopy, Confocal microscopy, Signal detection, Spatial resolution, Modulation, Diffraction, Fluorescence spectroscopy, Demodulation, Molecules

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SPIE Journal Paper | 1 March 2009 Open Access

Time-resolved observation of surface-enhanced Raman scattering from gold nanoparticles during transport through a living cell

Katsumasa Fujita, Sawako Ishitobi, Keisaku Hamada, Nicholas Smith, Atsushi Taguchi, Yasushi Inouye, Satoshi Kawata

JBO, Vol. 14, Issue 02, 024038, (March 2009) https://doi.org/10.1117/12.10.1117/1.3119242

KEYWORDS: Surface enhanced Raman spectroscopy, Nanoparticles, Gold, Raman spectroscopy, Particles, Raman scattering, Molecules, Temporal resolution, Proteins, Microscopy

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Proceedings Article | 25 February 2009 Paper

Multi-focus CARS microscopy using microlens array scanner for realtime molecular spectral imaging

Mamoru Hashimoto, Takeo Minamikawa, Tsutomu Araki, Katsumasa Fujita, Satoshi Kawata

Proceedings Volume 7183, 71830R (2009) https://doi.org/10.1117/12.808699

KEYWORDS: Microscopy, Sensors, Signal detection, Raman spectroscopy, Signal to noise ratio, Microlens array, CARS tomography, Imaging spectroscopy, Laser systems engineering, Digital signal processing

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Proceedings Article | 24 February 2009 Paper

Dynamic molecular imaging of living cells by using Raman scattering

Katsumasa Fujita, Keisaku Hamada, Nicholas Isaac Smith, Yasushi Inouye, Satoshi Kawata

Proceedings Volume 7182, 71820I (2009) https://doi.org/10.1117/12.809053

KEYWORDS: Raman spectroscopy, Raman scattering, Molecules, Proteins, Microscopes, Molecular imaging, Confocal microscopy, Image acquisition, Molecular spectroscopy, Absorption

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Proceedings Article | 18 February 2009 Paper

Observation of living cells with gold nanoparticles by using surface-enhanced Raman scattering

Katsumasa Fujita, Jun Ando, Sawako Ishitobi, Keisaku Hamada, Nicholas Smith, Yasushi Inouye, Satoshi Kawata

Proceedings Volume 7192, 71920Q (2009) https://doi.org/10.1117/12.809115

KEYWORDS: Surface enhanced Raman spectroscopy, Nanoparticles, Gold, Raman spectroscopy, Particles, Raman scattering, Microscopes, Molecules, CCD cameras, Objectives

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SPIE Journal Paper | 1 November 2008 Open Access

Errata: Beyond the diffraction-limit biological imaging by saturated excitation microscopy

Masahito Yamanaka, Shogo Kawano, Katsumasa Fujita, Nicholas Smith, Satoshi Kawata

JBO, Vol. 13, Issue 06, 069801, (November 2008) https://doi.org/10.1117/12.10.1117/1.3054187

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Proceedings Article | 4 September 2008 Paper

Light-induced accumulation of single-wall carbon nanotubes dispersed in aqueous solution

Satoru Shoji, Thomas Roders, Zouheir Sekkat, Satoshi Kawata

Proceedings Volume 7037, 70370O (2008) https://doi.org/10.1117/12.795675

KEYWORDS: Raman spectroscopy, Raman scattering, Carbon nanotubes, Objectives, Dielectrics, Light scattering, Helium neon lasers, Confocal microscopy, Laser scattering, Scattering

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SPIE Journal Paper | 1 September 2008 Open Access

Beyond the diffraction-limit biological imaging by saturated excitation microscopy

Masahito Yamanaka, Shogo Kawano, Katsumasa Fujita, Nicholas Smith, Satoshi Kawata

JBO, Vol. 13, Issue 05, 050507, (September 2008) https://doi.org/10.1117/12.10.1117/1.2992595

KEYWORDS: Luminescence, Microscopy, Confocal microscopy, Spatial resolution, Molecules, Demodulation, Molecular lasers, Modulation, Nonlinear optics, Signal detection

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Proceedings Article | 28 August 2008 Paper

Highly efficient heating assisted tip-enhanced Raman spectroscopy

Alvarado Tarun, Norihiko Hayazawa, Masashi Motohashi, Satoshi Kawata

Proceedings Volume 7033, 70330C (2008) https://doi.org/10.1117/12.793999

KEYWORDS: Raman spectroscopy, Silicon, Signal detection, Optical filters, Raman scattering, Transmittance, Polarizers, Polarization, Electronic filtering, Silver

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SPIE Journal Paper | 1 July 2008 Open Access

Raman microscopy for dynamic molecular imaging of living cells

Keisaku Hamada, Katsumasa Fujita, Nicholas Smith, Minoru Kobayashi, Yasushi Inouye, Satoshi Kawata

JBO, Vol. 13, Issue 04, 044027, (July 2008) https://doi.org/10.1117/12.10.1117/1.2952192

KEYWORDS: Raman spectroscopy, Raman scattering, Proteins, Molecules, Microscopy, Molecular imaging, Luminescence, Video, Applied physics, Confocal microscopy

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Proceedings Article | 3 April 2008 Paper

Toward single molecule detection through tip-enhanced near-field Raman spectroscopy

Prabhat Verma, Taro Ichimura, Taka-aki Yano, Yasushi Inouye, Satoshi Kawata

Proceedings Volume 6793, 67930H (2008) https://doi.org/10.1117/12.799265

KEYWORDS: Molecules, Raman spectroscopy, Raman scattering, Molecular interactions, Adsorption, Near field, Nanocrystals, Visible radiation, Near field scanning optical microscopy, Spatial resolution

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Proceedings Article | 2 October 2007 Paper

Photon tunneling at material boundary by positive permeability metamaterials

Atsushi Ishikawa, Takuo Tanaka, Satoshi Kawata

Proceedings Volume 6638, 663808 (2007) https://doi.org/10.1117/12.731747

KEYWORDS: Metamaterials, Magnetism, Polarization, Interfaces, Glasses, Refractive index, Reflectivity, Optical fibers, Optical components, Terahertz radiation

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Proceedings Article | 28 September 2007 Paper

Tip-enhanced near-field Raman spectroscopy applied to nano-composite materials

Yuika Saito, Kazuhiro Yanagi, Norihiko Hayazawa, Hiromichi Kataura, Satoshi Kawata

Proceedings Volume 6642, 66420E (2007) https://doi.org/10.1117/12.733706

KEYWORDS: Raman spectroscopy, Single walled carbon nanotubes, Molecules, Near field, Nanocomposites, Spectroscopy, Molecular interactions, Atomic force microscopy, Silver, Solids

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Proceedings Article | 25 September 2007 Paper

Characterization of localized strain of crystals in nano-scale by tip-enhanced Raman spectroscope and microscope

Norihiko Hayazawa, Masashi Motohashi, Yuika Saito, Satoshi Kawata

Proceedings Volume 6769, 67690P (2007) https://doi.org/10.1117/12.733468

KEYWORDS: Silicon, Raman spectroscopy, Surface enhanced Raman spectroscopy, Silver, Raman scattering, Germanium, Phonons, Crystals, Spectroscopy, Near field

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Proceedings Article | 11 September 2007 Paper

Optical polarizer made of mechanically aligned carbon nanotubes

Satoru Shoji, Hidemasa Suzuki, Remo Zaccaria, Zouheir Sekkat, Satoshi Kawata

Proceedings Volume 6645, 664516 (2007) https://doi.org/10.1117/12.735468

KEYWORDS: Polarizers, Carbon nanotubes, Composites, Polarization, Transmittance, Absorption, Anisotropy, Polymers, Scanning electron microscopy, LCDs

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Proceedings Article | 11 September 2007 Paper

Elasticity of two-photon-fabricated nano-wires

Sana Nakanishi, Hong-Bo Sun, Satoshi Kawata

Proceedings Volume 6645, 664514 (2007) https://doi.org/10.1117/12.733499

KEYWORDS: Polymers, Polymerization, Raman spectroscopy, Ultraviolet radiation, Nanolithography, Optical trapping, Photopolymerization, Bioalcohols, Molecules, Nanowires

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Proceedings Article | 14 February 2007 Paper

Observation of cell dynamics by laser scanning Raman microscope

Keisaku Hamada, Katsumasa Fujita, Minoru Kobayashi, Satoshi Kawata

Proceedings Volume 6443, 64430Z (2007) https://doi.org/10.1117/12.700729

KEYWORDS: Raman spectroscopy, Microscopes, Denoising, Image acquisition, Confocal microscopy, Raman scattering, Spectroscopy, Spatial resolution, Laser scanners, Microscopy

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Proceedings Article | 14 February 2007 Paper

High-resolution laser scanning microscopy with saturated excitation of fluorescence

Katsumasa Fujita, Shogo Kawano, Minoru Kobayashi, Satoshi Kawata

Proceedings Volume 6443, 64430Y (2007) https://doi.org/10.1117/12.700660

KEYWORDS: Luminescence, Spatial resolution, Microscopy, Modulation, Molecules, Laser scanners, Demodulation, Point spread functions, Confocal microscopy, Signal detection

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Proceedings Article | 3 October 2006 Paper

Frequency dependence of the magnetic response of split-ring resonators

Atsushi Ishikawa, Takuo Tanaka, Satoshi Kawata

Proceedings Volume 6323, 632320 (2006) https://doi.org/10.1117/12.681495

KEYWORDS: Terahertz radiation, Magnetism, Silver, Metals, Gold, Copper, Resistance, Split ring resonators, Visible radiation, Inductance

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Proceedings Article | 11 September 2006 Paper

Three-dimensional fabrication of metallic micro/nanostructures by two-photon polymerization for metamaterials

Florian Formanek, Nobuyuki Takeyasu, Takuo Tanaka, Kenta Chiyoda, Atsushi Ishikawa, Satoshi Kawata

Proceedings Volume 6324, 63240T (2006) https://doi.org/10.1117/12.681430

KEYWORDS: Silver, Polymers, Glasses, Electroless plating, Metals, Coating, Scanning electron microscopy, Microlens array, Metamaterials, Particles

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Proceedings Article | 30 August 2006 Paper

Three-dimensional metallic micro/nanostructures fabricated by two-photon-induced reduction of metal ions

Takuo Tanaka, Atsushi Ishikawa, Satoshi Kawata

Proceedings Volume 6324, 63240R (2006) https://doi.org/10.1117/12.681508

KEYWORDS: Silver, Metals, Ions, 3D microstructuring, Glasses, Gold, Fabrication, Photomicroscopy, Diffusion, Particles

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Proceedings Article | 30 August 2006 Paper

Nanoscale characterization of localized strain in crystals by tip-enhanced Raman spectroscope in reflection mode

Norihiko Hayazawa, Yuika Saito, Masashi Motohashi, Masato Iyoki, Satoshi Kawata

Proceedings Volume 6324, 63240L (2006) https://doi.org/10.1117/12.675808

KEYWORDS: Silicon, Raman spectroscopy, Germanium, Silver, Surface enhanced Raman spectroscopy, Spectroscopy, Reflectance spectroscopy, Silicon films, Reflection, Signal detection

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Proceedings Article | 30 August 2006 Paper

Tip-enhanced near-field Raman scattering and imaging of carbon nanostructures

Prabhat Verma, Taka-aki Yano, Yasushi Inouye, Satoshi Kawata

Proceedings Volume 6324, 63240K (2006) https://doi.org/10.1117/12.683377

KEYWORDS: Single walled carbon nanotubes, Raman spectroscopy, Molecules, Raman scattering, Near field, Metals, Silver, Carbon, Molecular interactions, Near field scanning optical microscopy

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Proceedings Article | 30 August 2006 Paper

Site-selective metal deposition on 3D micro/nanostructures fabricated by two-photon polymerization

N. Takeyasu, F. Formanek, K. Chiyoda, T. Tanaka, A. Ishikawa, S. Kawata

Proceedings Volume 6324, 63240W (2006) https://doi.org/10.1117/12.681511

KEYWORDS: Polymers, Silver, Metals, Ultraviolet radiation, Polymer thin films, Absorption, Polymerization, Electroless plating, Scanning electron microscopy, Glasses

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Proceedings Article | 10 June 2006 Paper

Three-dimension micro-nanofabrication with a femtosecond laser

Hong-Bo Sun, Satoshi Kawata

Proceedings Volume 6344, 634416 (2006) https://doi.org/10.1117/12.694288

KEYWORDS: Photons, Spatial resolution, Photopolymerization, Molecules, Polymers, Solids, Femtosecond phenomena, Imaging spectroscopy, Chemical species, Light

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SPIE Journal Paper | 1 March 2006 Open Access

Control of cardiomyocyte orientation on a microscaffold fabricated by photopolymerization with laser beam interference

Akiko Fujita, Katsumasa Fujita, Osamu Nakamura, Takehisa Matsuda, Satoshi Kawata

JBO, Vol. 11, Issue 02, 021015, (March 2006) https://doi.org/10.1117/12.10.1117/1.2186042

KEYWORDS: Photopolymerization, Glasses, Control systems, Solids, Heart, Phase contrast, Microscopes, Luminescence, Cytoskeletons, Proteins

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Proceedings Article | 1 March 2006 Paper

The effect of tip-enhancement in near-field Raman scattering of C-60

Prabhat Verma, Kouhei Yamada, Yasushi Inouye, Satoshi Kawata

Proceedings Volume 6106, 61061X (2006) https://doi.org/10.1117/12.645495

KEYWORDS: Molecules, Raman scattering, Raman spectroscopy, Molecular interactions, Near field scanning optical microscopy, Near field, Silver, Light scattering, Scattering, Molecular aggregates

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Proceedings Article | 23 January 2006 Paper

The study on spatial resolution in two-photon induced polymerization

Kenji Takada, Hong-Bo Sun, Satoshi Kawata

Proceedings Volume 6110, 61100A (2006) https://doi.org/10.1117/12.645221

KEYWORDS: Polymerization, Spatial resolution, Scanning electron microscopy, Polymers, Molecules, Femtosecond phenomena, Objectives, Quenching (fluorescence), Absorption, Oxygen

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Proceedings Article | 27 August 2005 Paper

Two-photon photopolymerization for photonic, mechanical and meta-material devices

Satoshi Kawata

Proceedings Volume 5931, 59310S (2005) https://doi.org/10.1117/12.621793

KEYWORDS: Photopolymerization, Spatial resolution, Metamaterials, Molecules, Femtosecond phenomena, Polymers, Scanning electron microscopy, Photonic crystals, Laser processing, Absorption

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Proceedings Article | 26 August 2005 Paper

Negative permeability of split ring resonator in the optical frequency region

Atsushi Ishikawa, Takuo Tanaka, Satoshi Kawata

Proceedings Volume 5927, 59271E (2005) https://doi.org/10.1117/12.617988

KEYWORDS: Terahertz radiation, Silver, Magnetism, Capacitance, Metals, Visible radiation, Gold, Copper, Split ring resonators, Metamaterials

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Proceedings Article | 18 August 2005 Paper

Molecular orientation by two-photon absorption

H. Ishitobi, M. Maeda, Z. Sekkat, S. Kawata

Proceedings Volume 5935, 59350F (2005) https://doi.org/10.1117/12.611185

KEYWORDS: Absorbance, Absorption, Polarization, Chromophores, Polymethylmethacrylate, Anisotropy, Microscopes, Ultraviolet radiation, Visible radiation, Laser beam diagnostics

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Proceedings Article | 28 April 2005 Paper

Femtosecond laser-induced calcium release in neural-type cells

Nicholas Smith, Shigeki Iwanaga, Taro Beppu, Katsumasa Fujita, Osamu Nakamura, Satoshi Kawata

Proceedings Volume 5705, (2005) https://doi.org/10.1117/12.596923

KEYWORDS: Calcium, Femtosecond phenomena, Acquisition tracking and pointing, Absorption, Luminescence, Wave propagation, Ions, In vitro testing, Nerve, Neurons

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Proceedings Article | 30 March 2005 Paper

Tip-enhanced near-field CARS microscopy for molecular nano-imaging

Satoshi Kawata, Taro Ichimura, Norihiko Hayazawa, Mamoru Hashimoto, Yasushi Inouye

Proceedings Volume 5700, (2005) https://doi.org/10.1117/12.596664

KEYWORDS: Spatial resolution, Single walled carbon nanotubes, Microscopy, Molecules, Near field, Polarization, CARS tomography, Raman spectroscopy, Silver, Glasses

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Proceedings Article | 16 December 2004 Paper

Multibranched and dendritic organic materials with high two-photon absorption activity

Seung-Wan Kang, Joo Yeon Kim, Ran Hee Kim, Bong-Keun So, Kwang-Sup Lee, In-Wook Hwang, Dongho Kim, Paul Fleitz, Hong-Bo Sun, Satoshi Kawata

Proceedings Volume 5621, (2004) https://doi.org/10.1117/12.582709

KEYWORDS: Chromophores, Luminescence, Absorption, Sol-gels, Dendrimers, Picosecond phenomena, Molecules, Photopolymerization, Microfabrication, Organic materials

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Proceedings Article | 19 October 2004 Paper

Plasmonic near-field nano-imaging and spectroscopy

Satoshi Kawata, Hiroyuki Watanabe, Yasushi Inouye

Proceedings Volume 5512, (2004) https://doi.org/10.1117/12.564843

KEYWORDS: Raman spectroscopy, Silver, Molecules, Near field, Surface enhanced Raman spectroscopy, Chemical species, Nanocrystals, Plasmonics, Nitrogen, Molecular spectroscopy

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Proceedings Article | 15 October 2004 Open Access

Coherent anti-Stokes Raman spectroscopy for nano-imaging with a metallic near-field probe

Satoshi Kawata, Taro Ichimura, Norihiko Hayazawa, Mamoru Hashimoto, Yasushi Inoue

Proceedings Volume 5516, (2004) https://doi.org/10.1117/12.564283

KEYWORDS: Electroluminescent displays, Raman spectroscopy, Molecules, Polarization, Spatial resolution, CARS tomography, Silver, Spectroscopy, Microscopy, Signal detection

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Proceedings Article | 1 June 2004 Paper

Tip-enhanced NSOM

Satoshi Kawata, Norihiko Hayazawa, Takaaki Yano, Hiroyuki Watanabe, Taro Ichimura, Mamoru Hashimoto, Yasushi Inouye

Proceedings Volume 5331, (2004) https://doi.org/10.1117/12.537670

KEYWORDS: Raman spectroscopy, Molecules, Single walled carbon nanotubes, Near field, Raman scattering, Crystals, Near field scanning optical microscopy, Silver, Molecular spectroscopy, Surface enhanced Raman spectroscopy

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Proceedings Article | 3 November 2003 Paper

Fabrication of polymeric 3D structure containing metal/metal oxide nanoparticles by two-photon processes

Xuan-Ming Duan, Hong-Bo Sun, Koshiro Kaneko, Satoshi Kawata

Proceedings Volume 5211, (2003) https://doi.org/10.1117/12.505406

KEYWORDS: Polymers, Titanium, Nanoparticles, Two photon polymerization, Ions, Photonic crystals, Composites, Absorption, Oxides, Diamond

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Proceedings Article | 20 October 2003 Paper

Two-photon micromachining for functional photonic crystals

Satoshi Kawata, Hong-Bo Sun

Proceedings Volume 5225, (2003) https://doi.org/10.1117/12.508530

KEYWORDS: Photonic crystals, Photopolymerization, Sun, Polymers, Diamond, Chemical species, Crystals, Nanofabrication, Scanning electron microscopy, Optoelectronic devices

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Proceedings Article | 9 July 2003 Paper

Photofabrication of woodpile three-dimensional photonic crystal by using laser interference

Satoru Shoji, Hong-Bo Sun, Satoshi Kawata

Proceedings Volume 5000, (2003) https://doi.org/10.1117/12.479500

KEYWORDS: Photonic crystals, Polymers, Glasses, Laser crystals, Scanning electron microscopy, Solids, Liquids, Refractive index, Photonic crystal devices, Bioalcohols

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Proceedings Article | 19 June 2003 Paper

Stimulation of living cells by femtosecond near-infrared laser pulses

Shigeki Iwanaga, Nicholas Smith, Katsumasa Fujita, Tomoyuki Kaneko, Masahito Oyamada, Tetsuro Takamatsu, Satoshi Kawata, Osamu Nakamura

Proceedings Volume 4978, (2003) https://doi.org/10.1117/12.478591

KEYWORDS: Calcium, Femtosecond phenomena, Laser irradiation, Ions, Luminescence, Microscopes, Absorption, Pulsed laser operation, Sapphire lasers, Light sources

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Proceedings Article | 14 February 2003 Paper

Two-photon absorption for three-dimensional micro/nanofabrication and data storage

Satoshi Kawata, Hong-Bo Sun

Proceedings Volume 4797, (2003) https://doi.org/10.1117/12.453481

KEYWORDS: Absorption, Spatial resolution, 3D optical data storage, Photopolymerization, Data storage, Femtosecond phenomena, Photochromic materials, Photons, Liquids, Molecules

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Proceedings Article | 15 June 2001 Paper

Optical cross-sectional imaging of a scattering medium with the aid of a pulse ultrasound wave

Masaki Hisaka, Tadao Sugiura, Satoshi Kawata

Proceedings Volume 4256, (2001) https://doi.org/10.1117/12.429312

KEYWORDS: Ultrasonography, Light scattering, Scattering, Tissue optics, Transducers, Silicon, Modulation, Signal detection, Optical imaging, Ceramics

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Proceedings Article | 23 May 2001 Paper

Modified Monte Carlo of photon transport for studying the imaging properties in highly scattering media

Vincent Daria, Caesar Saloma, Satoshi Kawata

Proceedings Volume 4251, (2001) https://doi.org/10.1117/12.427900

KEYWORDS: Photon transport, Light scattering, Scattering, Monte Carlo methods, Scattering media, Point spread functions, Microscopy, Solids, Signal to noise ratio, 3D modeling

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Proceedings Article | 29 November 2000 Paper

Photo-orientation movement of photoisomerizable chromophores: quantifying analytical theory and application to spectrally overlapping and distinguishable isomers

Zouheir Sekkat, Hidekazu Ishitobi, Daisuke Yasumatsu, Satoshi Kawata

Proceedings Volume 4106, (2000) https://doi.org/10.1117/12.408499

KEYWORDS: Chromophores, Polymers, Ultraviolet radiation, Surface plasmons, Absorbance, Anisotropy, Polymethylmethacrylate, Visible radiation, Absorption, Nonlinear optics

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Proceedings Article | 27 April 2000 Paper

Real-time Ca ion wave imaging in living rat cardiac muscle cells by a confocal multiphoton microscope with a microlens-pinhole array scanner

Katsumasa Fujita, Tomoyuki Kaneko, Osamu Nakamura, Masahito Oyamada, Tetsuro Takamatsu, Satoshi Kawata

Proceedings Volume 3921, (2000) https://doi.org/10.1117/12.384225

KEYWORDS: Microscopes, Luminescence, Confocal microscopy, Calcium, Microlens array, Imaging systems, Objectives, Spatial resolution, CCD cameras, Scanners

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Proceedings Article | 17 April 2000 Paper

Photofabrication of 3D photonic crystal by multibeam laser interference

Satoru Shoji, Satoshi Kawata

Proceedings Volume 3937, (2000) https://doi.org/10.1117/12.382809

KEYWORDS: Photonic crystals, Laser crystals, Glasses, Crystals, Fabrication, Liquids, Bioalcohols, Refractive index, Photons, 3D vision

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Proceedings Article | 17 April 2000 Paper

Three-dimensional fabrication and observation of microstructures using two-photon absorption and fluorescence

Tomokazu Tanaka, Satoshi Kawata

Proceedings Volume 3937, (2000) https://doi.org/10.1117/12.382798

KEYWORDS: Luminescence, Absorption, 3D microstructuring, Microscopes, Image resolution, 3D optical data storage, Confocal microscopy, Two photon imaging, Objectives, Photopolymerization

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Proceedings Article | 22 September 1999 Paper

Near-field scanning optical microscope using a metallized cantilever tip for nanospectroscopy

Yasushi Inouye, Norihiko Hayazawa, Koji Hayashi, Zouheir Sekkat, Satoshi Kawata

Proceedings Volume 3791, (1999) https://doi.org/10.1117/12.363860

KEYWORDS: Near field scanning optical microscopy, Luminescence, Raman scattering, Near field, Light scattering, Stray light, Photons, Near field optics, Objectives, Rhodamine

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Proceedings Article | 22 September 1999 Paper

Deposition of chromium atoms by using the radiation force of a frequency-doubled laser diode for direct atomic lithography

Kenji Okamoto, Hironobu Inouye, Yasushi Inouye, Satoshi Kawata

Proceedings Volume 3791, (1999) https://doi.org/10.1117/12.363852

KEYWORDS: Chemical species, Chromium, Semiconductor lasers, Collimation, Numerical analysis, Nanofabrication, Lithography, Second-harmonic generation, Nanolithography, Fabrication

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Proceedings Article | 19 July 1999 Paper

Three-dimensional optics for optical data storage and optical MEMs using two-photon technology

Satoshi Kawata

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.354825

KEYWORDS: Laser applications, 3D optical data storage, Pulsed laser operation, Optical storage, Microscopes, Microscopy, Microopto electromechanical systems, Near field optics, Molecules, Confocal microscopy

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