Optical bit recording in a human fingernail
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概要
- 論文の詳細を見る
Optical bit recording in a human fingernail is demonstrated by using a femtosecond laser processing technique. A bit is formed in a fingernail by irradiation of a focused femtosecond laser pulse. We have investigated the dependence of the irradiation pulse energy on the diameter and length of the formed bit. The bit diameter and length are theoretically explained based on a Gaussian beam irradiation model. Furthermore, the achievable recording density is estimated from the measured bit diameter and bit length. We have found that the pulse energy required to form a bit depends on the recording depth and the surface condition of the fingernail.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-01-15
著者
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Nishida N
Department Of Forensic Medicine Akita University School Of Medicine
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Takita Akihiro
Department Of Optical Science And Technology Faculty Of Engineering The University Of Tokushima
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Watanabe Mitsuru
Department Of Agricultural Chemistry School Of Agriculture Nagoya University
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Matsuo S
Department Of Food Science And Nutrition School Of Human Environmental Sciences Mukogawa Women'
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MISAWA H
Department of Neurology, Tokyo Metropolitan Institute for Neuroscience
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Hayasaki Y
Department of Optical Science and Technology, Faculty of Engineering, The University of Tokushima
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Yamamoto Hirotsugu
Department of Optical Science and Technology, Faculty of Engineering, The University of Tokushima, 2-1, Minamijosanjima-cho, Tokushima 770-8506, Japan
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Nishida Nobuo
Department of Optical Science and Technology, Faculty of Engineering, The University of Tokushima, 2-1, Minamijosanjima-cho, Tokushima 770-8506, Japan
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Misawa Hiroaki
Department of Ecosystem Engineering, Graduate School of Engineering, The University of Tokushima, 2-1, Minamijosanjima-cho, Tokushima 770-8506, Japan
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Watanabe Mitsuru
Department of Ecosystem Engineering, Graduate School of Engineering, The University of Tokushima, 2-1, Minamijosanjima-cho, Tokushima 770-8506, Japan
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Matsuo Shigeki
Department of Ecosystem Engineering, Graduate School of Engineering, The University of Tokushima, 2-1, Minamijosanjima-cho, Tokushima 770-8506, Japan
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