Silicon Nitride Cantilever Arrays Integrated with Si Heater and Piezoelectric Sensors for SPM Data Storage Applications

  • Nam, Hyo-Jin (MS Group, Devices and Materials Lab., LG Electronics Institute of Technology) ;
  • Jang, Seong-Soo (MS Group, Devices and Materials Lab., LG Electronics Institute of Technology) ;
  • Kim, Young-Sik (MS Group, Devices and Materials Lab., LG Electronics Institute of Technology) ;
  • Lee, Caroline-Sunyong (MS Group, Devices and Materials Lab., LG Electronics Institute of Technology) ;
  • Jin, Won-Hyeog (MS Group, Devices and Materials Lab., LG Electronics Institute of Technology) ;
  • Cho, Il-Joo (MS Group, Devices and Materials Lab., LG Electronics Institute of Technology) ;
  • Bu, Jong-Uk (MS Group, Devices and Materials Lab., LG Electronics Institute of Technology)
  • Published : 2005.03.31

Abstract

Silicon nitride cantilevers integrated with silicon heaters and piezoelectric sensors were developed for the scanning probe microscope (SPM) based data storage application. These nitride cantilevers are expected to have better mechanical stability and uniformity of initial bending than the previously developed silicon cantilevers. Data bits of 40 nm in diameter were recorded on PMMA film and the sensitivity of the piezoelectric sensor was 0.615 fC/nm, meaning that indentations less than 20 nm in depth can be detected. For high speed operation, $128{\times}128$ cantilever array was developed.

Keywords

References

  1. S. Hosaka : SPM based recording toward ultrahigh density recording with trillion $bits/inch^2$', IEEE Transactions on Magnetics, Vol. 37, pp. 855-859, 2001 https://doi.org/10.1109/20.917631
  2. P. Vettiger, G. Cross, M. Despont, U. drechsler, U. Durig, B. Gotsmann, W. Haberle, M.A. Lantz, H.E. Rothuizen, R. Stutz and G. K. Binnig, 'The 'millipede'- nanotechnology entering data storage', IEEE Transactions on Nanotechnology, Vol. 1, pp. 39-55, 2002 https://doi.org/10.1109/TNANO.2002.1005425
  3. C. S. Lee, H. J. Nam, Y. S. Kim, W. H. Jin, S. M. Cho, J. U. Bu 'Microcantilevers integrated with heaters and piezoelectric detectors for nano data-storage application', Applied Physics Letters, Vol. 83, pp. 4839-4841, 2003 https://doi.org/10.1063/1.1633009
  4. R.J. Grow, S.C. Minne, S.R. Manalis, C.F. Quate 'Silicon nitride cantilevers with oxidation-sharpened silicon tips for atomic force microcopy', Journal of Microelectromechanical Systems, Vol. 11, pp. 317-321, 2002 https://doi.org/10.1109/JMEMS.2002.800924
  5. H.J. Nam, S.M. Cho, Y.J. Yee, H.M. Lee, D.C. Kim, J-U. Bu and J.H. Hong : Integrated Ferroelectrics, 35 (2001) 185 https://doi.org/10.1080/10584580108016900
  6. C.S. Lee, T. Itoh and T. Suga 'Micromachined piezoelectric force sensors based on PZT thin films', IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, Vol. 43, pp. 553-559, 1996 https://doi.org/10.1109/58.503715