Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 168-171 |
| Number of pages | 4 |
| Journal | Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers |
| Volume | 43 |
| Issue number | 1 |
| Publication status | Published - 2004 Jan |
| Externally published | Yes |
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Keywords
- Biological tissue
- Femtosecond laser processing
- Human fingernail
- Three-dimensional optical data storage
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
Optical Bit Recording in a Human Fingernail. / Takita, Akihiro; Watanabe, Mitsuru; Yamamoto, Hirotsugu; Matsuo, Shigeki; Misawa, Hiroaki; Hayasaki, Yoshio; Nishida, Nobuo.
In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 43, No. 1, 01.2004, p. 168-171.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Optical Bit Recording in a Human Fingernail
AU - Takita, Akihiro
AU - Watanabe, Mitsuru
AU - Yamamoto, Hirotsugu
AU - Matsuo, Shigeki
AU - Misawa, Hiroaki
AU - Hayasaki, Yoshio
AU - Nishida, Nobuo
PY - 2004/1
Y1 - 2004/1
N2 - 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.
AB - 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.
KW - Biological tissue
KW - Femtosecond laser processing
KW - Human fingernail
KW - Three-dimensional optical data storage
UR - http://www.scopus.com/inward/record.url?scp=1842710001&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=1842710001&partnerID=8YFLogxK
M3 - Article
VL - 43
SP - 168
EP - 171
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 1
ER -