Mechanical Properties of Spider Silk.

Kitagawa, Masayoshi; Sasagawa, Hiroshi; Kitayama, Toshio

doi:10.2472/jsms.44.153

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“…The origin of the observed SHG enhancement effect is suggested to be the orientation of the β‐sheet induced by stretching the dragline. From the linear relationship of the stress and strain of the dragline in previous reports, the result of Figure is suggested to be a phenomenon seen in the stress increase stage before the breaking of the dragline.…”

Section: Discussionmentioning

confidence: 71%

Observation of spider silk by femtosecond pulse laser second harmonic generation microscopy

Zhao

Hien

et al. 2018

Surface & Interface Analysis

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An asymmetric β‐sheet structure of spider silk is said to induce optical second harmonic generation. In this paper, using an in‐house nonscanning type femtosecond pulse laser second harmonic generation microscope, we characterized the behavior of the β‐sheet of spider silk under an applied external force. The orientation of the β‐sheets was more unidirectional when the silk was extended. One of the origins of the high mechanical strength of the dragline is suggested to be the physical arrangement of its β‐sheets.

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Section: Discussionmentioning

confidence: 71%