Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지

fs-laser Ablation and Optoperforation Threshold for PDMS Thin Film on $\mu$-channel

미세 유체 상 PDMS 고분자 필름의 펨토초 레이저 어블레이션 및 천공 임계치 연구

  • 우숙이 (한국표준과학연구원 첨단장비기술센터) ;
  • ;
  • 윤태오 (한국표준과학연구원 첨단장비기술센터) ;
  • 정세채 (한국표준과학연구원 첨단장비기술센터) ;
  • 박일홍 ((주)한빛나노바이오테크)
  • Published : 2010.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

We have investigated fs-laser ablation as well as optoperforation threshold of PDMS (Polydimethylsiloxane) thin lid cover on ${\mu}$-channel with changing the flow medium from water to hemoglobin. The ablation threshold is found to be independent of both PDMS thin film thickness and flow medium, but the optoperforation threshold is dependent on the films thickness. The observation that the ablation process is well described with simple two-temperature model supposed that the cover lid PDMS of $\mu$-channel be processed with minimized thermal effects by fs-laser with low laser fluence.

Keywords

References

  1. Glezer, E. N. and Mazur, E., "Ultrafast-laser driven micro-explosions in transparent materials," Appl. Phys. Lett., Vol. 71, No. 7, pp. 882-884, 1997. https://doi.org/10.1063/1.119677
  2. Gabel, C. V., "Femtosecond lasers in biology: nanoscale surgery with ultrafast optics," Contemporary Physics, Vol. 49, No. 6, pp. 391-411, 2008. https://doi.org/10.1080/00107510802628263
  3. Stuart, B. C., Feit, M. D., Herman, S., Rubenchik, A. M., Shore, B. W. and Perry, M. D., "Nanosecond-tofemtosecond laser induced breakdown in dielectrics," Phys. Rev.(B), Vol. 53, No. 4, pp. 1749-1761, 1996. https://doi.org/10.1103/PhysRevB.53.1749
  4. Giguere, D., Olivie, G., Vidal, F., Toetsch, S., Girard, G., Ozaki, T., Kieffer, J. C., Nada, O. and Brunette, I., "Laser ablation threshold dependence on pulse duration for fused silica and corneal tissues: experiments and modeling," J. Opt. Soc. Am.(A), Vol. 24, No. 6, pp. 1562-1568, 2007. https://doi.org/10.1364/JOSAA.24.001562
  5. Sidhu, M. S., Kim, E. K., Woo, S.-Y, Song, M. C. and Jeoung, S. C., "Femtosecond laser assisted optoperforation of primary retinal blood vessels and retina tissue in porcine eyes," Journal of the Korean Physical Society, Vol. 55, No. 2, pp. 467-476, 2009. https://doi.org/10.3938/jkps.55.467
  6. Choi, J. R., Park, M. I., Park, M. R., Choi D. S. and Jeoung, S. C., "Transition of femtosecond laser ablation mechanism for sodalime glass caused by photoinduced defects," Journal of the Optical Society of Korea, Vol. 7, No. 3, pp. 150-155, 2003. https://doi.org/10.3807/JOSK.2003.7.3.150
  7. Park, M.-I. Park, C.-O., Kim, C. S. and Jeoung, S. C., "Characterization of femtosecond-laser-ablated a germanium single crystal in air by using x-ray diffraction," Journal of the Korean Physical Society, Vol. 46, No. 2, pp. 531-535, 2005.