Mr. Toyohiko Yamauchi Profile

Toyohiko Yamauchi

Researcher at Hamamatsu Photonics KK

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Author

Publications (19)

Proceedings Article | 1 August 2021 Presentation + Paper

A method to study cellular injuries using optical trapping combined with laser-induced shockwaves under quantitative phase microscope

Pegah Pouladian, Nicolas Perez, Toyohiko Yamauchi, Nicole Wakida, Michael Berns, Daryl Preece

Proceedings Volume 11798, 1179808 (2021) https://doi.org/10.1117/12.2594780

KEYWORDS: Optical tweezers, Lithium, Injuries, Pulsed laser operation, Microscopes, Beam splitters, Microscopy, Digital image correlation, Phase contrast, Mirrors

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Proceedings Article | 20 August 2020 Poster + Presentation + Paper

Simulating Traumatic Brain Injury (TBI) using laser-induced shockwave under quantitative phase microscopy

Pegah Pouladian, Toyohiko Yamauchi, Nicole Wakida, Michael Berns, Daryl Preece

Proceedings Volume 11463, 1146321 (2020) https://doi.org/10.1117/12.2569334

KEYWORDS: Traumatic brain injury, Injuries, Microscopy, Lithium, Optical simulations, Microfluidics, Laser systems engineering, 3D image processing, Pulsed laser operation

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Proceedings Article | 23 February 2018 Paper

Speckle-free and halo-free low coherent Mach-Zehnder quantitative-phase-imaging module as a replacement of objective lens in conventional inverted microscopes

Toyohiko Yamauchi, Hidenao Yamada, Hisayuki Matsui, Osamu Yasuhiko, Yukio Ueda

Proceedings Volume 10503, 105031V (2018) https://doi.org/10.1117/12.2289529

KEYWORDS: Microscopes, Objectives, Light emitting diodes, Cameras, Mirrors, Mach-Zehnder interferometers, Interferometers, Optical filters, Optical fibers, Phase shifting

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Proceedings Article | 23 February 2018 Paper

Transportable and vibration-free full-field low-coherent quantitative phase microscope

Toyohiko Yamauchi, Hidenao Yamada, Kentaro Goto, Hisayuki Matsui, Osamu Yasuhiko, Yukio Ueda

Proceedings Volume 10503, 105031U (2018) https://doi.org/10.1117/12.2289473

KEYWORDS: Cameras, Feedback control, Light emitting diodes, Microscopes, Phase shifts, Objectives, Mirrors, Phase shifting, Interferometers, Light sources

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Proceedings Article | 13 February 2018 Paper

Control of intracellular ionic concentrations by mid-infrared laser irradiation

G. Takebe, T. Yamauchi, Y. Shimizu, T. Dougakiuchi

Proceedings Volume 10492, 104920G (2018) https://doi.org/10.1117/12.2289360

KEYWORDS: Mid-IR, Calcium, Luminescence, Laser irradiation, Ions, Sodium, Quantum cascade lasers, Microscopes, Proteins

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Proceedings Article | 11 March 2015 Paper

Path-length stabilized low-coherent reflection-type quantitative phase microscope for nanometer-resolution profiling of plasma membrane

Toyohiko Yamauchi, Hidenao Iwai, Kentaro Goto, Shu Honma, Yutaka Yamashita

Proceedings Volume 9336, 933603 (2015) https://doi.org/10.1117/12.2077098

KEYWORDS: Prototyping, Reflection, Microscopes, Plasma, Feedback control, Halogens, Lamps, Objectives, Coherence (optics), Profiling

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Proceedings Article | 14 April 2014 Paper

Investigation of dynamic morphological changes of cancer cells during photoimmuno therapy (PIT) by low-coherence quantitative phase microscopy

Mikako Ogawa, Toyohiko Yamauchi, Hidenao Iwai, Yasuhiro Magata, Peter Choyke, Hisataka Kobayashi

Proceedings Volume 8931, 893113 (2014) https://doi.org/10.1117/12.2036944

KEYWORDS: Cancer, Photodynamic therapy, Luminescence, Near infrared, Microscopy, Cell death, Microscopes, Molecules, Photonics, Optical filters

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Proceedings Article | 4 March 2014 Paper

Three-dimensional morphological imaging of human induced pluripotent stem cells by using low-coherence quantitative phase microscopy

Toyohiko Yamauchi, Yumi Kakuno, Kentaro Goto, Tadashi Fukami, Norikazu Sugiyama, Hidenao Iwai, Yoshinori Mizuguchi, Yutaka Yamashita

Proceedings Volume 8947, 89471Q (2014) https://doi.org/10.1117/12.2037106

KEYWORDS: Stem cells, 3D image processing, Phase contrast, Microscopy, Microscopes, Imaging systems, Surface roughness, Mirrors, Tissue optics, Geometrical optics

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Proceedings Article | 20 March 2013 Paper

Label-free imaging of the dynamics of cell-to-cell string-like structure bridging in the free-space by low-coherent quantitative phase microscopy

Toyohiko Yamauchi, Hidenao Iwai, Yutaka Yamashita

Proceedings Volume 8571, 85711G (2013) https://doi.org/10.1117/12.2000674

KEYWORDS: 3D image processing, Video, Microscopy, Microscopes, Visualization, Luminescence, Live cell imaging, Electron microscopy, Light sources, Phase measurement

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Proceedings Article | 9 February 2012 Paper

Phase resolved and coherence gated en face reflection imaging of multilayered embryonal carcinoma cells

Toyohiko Yamauchi, Tadashi Fukami, Hidenao Iwai, Yutaka Yamashita

Proceedings Volume 8225, 82250G (2012) https://doi.org/10.1117/12.907637

KEYWORDS: Glasses, Reflection, Phase shifts, Coherence (optics), Multilayers, Mirrors, Microscopes, Optical coherence tomography, Phase measurement, Image transmission

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Proceedings Article | 9 February 2012 Paper

Long-term measurement of spontaneous membrane fluctuations over a wide dynamic range in the living cell by low-coherent quantitative phase microscopy

Toyohiko Yamauchi, Takashi Sakurai, Hidenao Iwai, Yutaka Yamashita

Proceedings Volume 8225, 82250A (2012) https://doi.org/10.1117/12.905950

KEYWORDS: Reflection, Image transmission, Glasses, Phase shifts, Digital holography, Mirrors, Microscopy, Phase measurement, Refractive index, Objectives

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Proceedings Article | 29 November 2011 Paper

Label-free imaging of intracellular motility by low-coherent quantitative phase microscope in reflection geometry

Toyohiko Yamauchi, Hidenao Iwai, Yutaka Yamashita

Proceedings Volume 8200, 820003 (2011) https://doi.org/10.1117/12.903668

KEYWORDS: Microscopes, Phase shifting, Glasses, Visualization, Plasma, Mirrors, Tomography, Interferometry, Objectives, Spatial resolution

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Proceedings Article | 23 February 2011 Paper

Wide-field reflection phase microscope

Zahid Yaqoob, Toyohiko Yamauchi, Dan Fu, Wonshik Choi, Ramachandra Dasari, Michael Feld

Proceedings Volume 7904, 79040T (2011) https://doi.org/10.1117/12.875877

KEYWORDS: Microscopes, Reflection, Interferometry, Beam splitters, Optical coherence tomography, Phase imaging, Phase measurement, Diffraction gratings, Single mode fibers, Microscopy

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Proceedings Article | 23 February 2011 Paper

Sagnac-interferometry-based digital optical phase conjugation (DOPC) system for turbidity suppression

Timothy Hillman, YongKeun Park, Zahid Yaqoob, Wonshik Choi, Dan Fu, Toyohiko Yamauchi, Ramachandra Dasari, Michael Feld

Proceedings Volume 7904, 790417 (2011) https://doi.org/10.1117/12.875918

KEYWORDS: Spatial light modulators, Phase conjugation, Scattering, Tissue optics, Light scattering, Optical proximity correction, Laser scattering, Multiple scattering, Mirrors, Wave propagation

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Proceedings Article | 26 February 2010 Paper

Spectroscopic phase microscopy for quantifying hemoglobin concentrations in intact red blood cells

YongKeun Park, Toyohiko Yamauchi, Wonshik Choi, Ramachandra Dasari, Michael Feld

Proceedings Volume 7568, 756812 (2010) https://doi.org/10.1117/12.842813

KEYWORDS: Molecules, Phase measurement, Microscopy, Spectroscopy, Blood, Scanning probe microscopy, Proteins, Imaging spectroscopy, Molecular spectroscopy, Diffraction

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Proceedings Article | 25 February 2010 Paper

Label-free classification of cell types by imaging of cell membrane fluctuations using low-coherent full-field quantitative phase microscopy

Toyohiko Yamauchi, Norikazu Sugiyama, Takashi Sakurai, Hidenao Iwai, Yutaka Yamashita

Proceedings Volume 7570, 75700X (2010) https://doi.org/10.1117/12.841008

KEYWORDS: Microscopy, Phase shifting, Reflection, Motion measurement, Microscopes, Glasses, Halogens, Atomic force microscopy, Image acquisition, CCD cameras

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Proceedings Article | 7 February 2007 Paper

Measurement of topographic phase image of living cells by white-light phase-shifting microscope with active stabilization of optical path difference

Toyohiko Yamauchi, Hidenao Iwai, Mitsuharu Miwa, Yutaka Yamashita

Proceedings Volume 6429, 64291Q (2007) https://doi.org/10.1117/12.699718

KEYWORDS: Halogens, Refractive index, Phase measurement, Phase shifts, Lamps, Microscopes, Active optics, Coherence (optics), Interferometers, Ferroelectric materials

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Proceedings Article | 14 December 2004 Paper

Performance evaluation of Brillouin optical correlation domain analysis for fiber optic distributed strain sensing by numerical simulation

Toyohiko Yamauchi, Kazuo Hotate

Proceedings Volume 5589, (2004) https://doi.org/10.1117/12.571351

KEYWORDS: Spatial resolution, Multiphoton fluorescence microscopy, Numerical simulations, Modulation, Fiber optics sensors, Computer simulations, Fiber optics, Single mode fibers, Optical sensing, Convolution

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Proceedings Article | 9 September 2002 Paper

Distribution sensing of Doppler shift frequency by synthesis of optical coherence function

Kazuo Hotate, Toyohiko Yamauchi

Proceedings Volume 4920, (2002) https://doi.org/10.1117/12.481950

KEYWORDS: Coherence (optics), Modulation, Doppler effect, Mirrors, Interferometry, Scattering, Light sources, Spatial resolution, Laser Doppler velocimetry, Sensors

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Showing 5 of 19 publications

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