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 |
| DOIs | |
| Publication status | Published - 2004 Jan |
| Externally published | Yes |
Keywords
- Biological tissue
- Femtosecond laser processing
- Human fingernail
- Three-dimensional optical data storage
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)
Fingerprint Dive into the research topics of 'Optical Bit Recording in a Human Fingernail'. Together they form a unique fingerprint.
Cite this
Takita, A., Watanabe, M., Yamamoto, H., Matsuo, S., Misawa, H., Hayasaki, Y., & Nishida, N. (2004). Optical Bit Recording in a Human Fingernail. Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 43(1), 168-171. https://doi.org/10.1143/JJAP.43.168