Second-order nonlinear optical microscopy of spider silk

  title={Second-order nonlinear optical microscopy of spider silk},
  author={Yue Zhao and K. T. T. Hien and G. Mizutani and H. Rutt},
  journal={Applied Physics B},
  • Yue Zhao, K. T. T. Hien, +1 author H. Rutt
  • Published 2017
  • Physics, Materials Science
  • Applied Physics B
  • Asymmetric $$\upbeta $$β-sheet protein structures in spider silk should induce nonlinear optical interaction such as second harmonic generation (SHG) which is experimentally observed for a radial line and dragline spider silk using an imaging femtosecond laser SHG microscope. By comparing different spider silks, we found that the SHG signal correlates with the existence of the protein $$\upbeta $$β-sheets. Measurements of the polarization dependence of SHG from the dragline indicated that the… CONTINUE READING
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