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Dive into the research topics where Sumio Nakahara is active.

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Featured researches published by Sumio Nakahara.


Fifth International Symposium on Display Holography | 1995

Surface properties of holograms studied by atomic force microscopy

Sumio Nakahara; Takeyoshi Fujita

The surface conditions of holographic materials were studied with atomic force microscopy (AFM). Holograms were made using Agfa 8E75 plates with two different types of developer and bleaching methods for the purpose of obtaining holograms of high diffraction efficiency. Developers and bleaches were based on Pyrogallol and Kodak D-19, and on potassium dichromate and potassium iodide, respectively. The observation area ranged from hundreds of nm to tens of microns and z (depth) from a few nm to hundreds of nm in ordinary circumstances. The AFM images of the relief pattern of holograms and the size and shapes of silver halide grains after bleaching were obtained in ambient air without coating.


The Proceedings of Conference of Kansai Branch | 2014

826 An attempt of the pressure measurement of the underwater shock wave by bubble collapse using optical technique

Katsuhiko Hamada; Shigeyoshi Hisada; Sumio Nakahara; Shoso Shinguhara


The Proceedings of Conference of Kansai Branch | 2013

221 Distribution Measurements of Sound Pressure Amplitude and Phase Radiated from Ultrasound Transducer by Holography Interferometry

Shintarou Nakamura; Shigeyoshi Hisada; Sumio Nakahara; Shoso Shinguhara


The Proceedings of Conference of Kansai Branch | 2011

514 Laser Marking to Thin Metal Film in Recording Medium

Shinichi Kitade; Sumio Nakahara; Shoso Shingubara


The proceedings of the JSME annual meeting | 2009

G1001-5-1 Measurements of Thermal Expansion Coefficient at Low Temperatures Using Electronic Speckle Pattern Interferometry

Hiroyuki Torii; Sumio Nakahara; Shigeyoshi Hisada; Shoso Shingubara


The proceedings of the JSME annual meeting | 2009

S1302-1-6 Fabrication of the high efficiency large-size diffraction optical elements using direct laser write lithography system

Keisuke Kondo; Sumio Nakahara; Shigeyoshi Hisada; Shoso Shingubara


The Proceedings of Conference of Kansai Branch | 2009

1019 Measurements of Sound Pressure Field Radiated from Ultrasound Transducer by Holography Interferometry

Yusaku Sawada; Shigeyoshi Hisada; Sumio Nakahara; Shoso Shinguhara


The Proceedings of Conference of Kansai Branch | 2006

414 Measurement of intensity distribution of underwater ultrasonic wave by holographic ineterferometry

Masayoshi Nishizawa; Shigeyoshi Hisada; Sumio Nakahara; Takeyoshi Fujita; Shoso Shingubara


The Proceedings of Conference of Kansai Branch | 2005

1111 Temporal Variation Measurements of Electron Temperature of Shock Wave Plasmas by Spectroscopic Method

Hideyuki Tashiro; Takeyoshi Fujita; Sumio Nakahara; Shigeyoshi Hisada


The Proceedings of Conference of Kansai Branch | 2005

921 Fabrication of Holographic Optical Elements for Transmittng Visual Information to a Long Distance

Jun Nakaichi; Sumio Nakahara; Shigeyoshi Hisada; Takeyoshi Fujita; Takashi Tuchitani; Hisaharu Tottori

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