Natural Silk as a Photonics Component: a Study on Its Light Guiding and Nonlinear Optical Properties.
Natural Silk as a Photonics Component: a Study on Its Light Guiding and Nonlinear Optical Properties.
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DOI：
10.1038/srep22358
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发表时间：
2016-03-01
影响因子：
4.6
通讯作者：
Sun Z
中科院分区：
文献类型：
--
作者：
Kujala S;Mannila A;Karvonen L;Kieu K;Sun Z
丝绸纤维预计将成为生物相容性和可生物吸收的波导，可用于为各种应用提供局部的光学功率，例如，在这里，在这里，在这里，在这里，在这里，在这里，天然丝绸纤维的线性和非线性的丝绸sillied sormby sormby sormby sormby sormby sormby sormby sormby sormby sormby sormby sormby rar sorm sormby。使用两种完成方法，并发现，由于在纤维表面上的调试和纤维的健康扭曲，脱胶丝的平均水平损失在很大程度上是散射的。简短的光功率当波导需要生物相容性且可生物吸收时，例如将波导嵌入活组织中时。
Silk fibers are expected to become a pathway to biocompatible and bioresorbable waveguides, which could be used to deliver localized optical power for various applications, e.g., optical therapy or imaging inside living tissue. Here, for the first time, the linear and nonlinear optical properties of natural silk fibers have been studied. The waveguiding properties of silk fibroin of largely unprocessed Bombyx mori silkworm silk are assessed using two complementary methods, and found to be on the average 2.8 dB mm−1. The waveguide losses of degummed silk are to a large extent due to scattering from debris on fiber surface and helical twisting of the fiber. Nonlinear optical microscopy reveals both configurational defects such as torsional twisting, and strong symmetry breaking at the center of the fiber, which provides potential for various nonlinear applications. Our results show that nonregenerated B. mori silk can be used for delivering optical power over short distances, when the waveguide needs to be biocompatible and bioresorbable, such as embedding the waveguide inside living tissue.