Dr. Daisuke Koyama Profile

Dr. Daisuke Koyama

at Doshisha Univ

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Author

Publications (3)

Proceedings Article | 17 October 2012 Paper

Varifocal imaging using an ultrasonic optical lens with viscoelastic material

Daisuke Koyama, Ryoichi Isago, Kentaro Nakamura

Proceedings Volume 8421, 84212N (2012) https://doi.org/10.1117/12.966347

KEYWORDS: Acoustics, Finite element methods, Silicon, Ferroelectric materials, Transducers, Liquid lenses, Liquids, Ultrasonics, Optical coherence tomography, Ultrasonography

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Proceedings Article | 19 May 2011 Paper

Fiber-optic ultrasonic probe based on refractive-index modulation in water

Bo Shen, Yuji Wada, Daisuke Koyama, Ryoichi Isago, Yosuke Mizuno, Kentaro Nakamura

Proceedings Volume 7753, 77539W (2011) https://doi.org/10.1117/12.884961

KEYWORDS: Water, Modulation, Ultrasonics, Optical fibers, Finite element methods, Signal detection, Fiber optics, Reflectivity, Light sources, Fiber optics sensors

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Proceedings Article | 17 May 2011 Paper

High-speed focusing of a liquid microlens using acoustic radiation force

Daisuke Koyama, Ryoichi Isago, Kentaro Nakamura

Proceedings Volume 7753, 77535E (2011) https://doi.org/10.1117/12.884753

KEYWORDS: Liquids, Interfaces, Kinematics, Acoustics, Liquid lenses, Silicon, Water, Performance modeling, Transducers, Ultrasonography

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