Nanoscale probing of electron-regulated structural transitions in silk proteins by near-field IR imaging and nano-spectroscopy
oleh: Nan Qin, Shaoqing Zhang, Jianjuan Jiang, Stephanie Gilbert Corder, Zhigang Qian, Zhitao Zhou, Woonsoo Lee, Keyin Liu, Xiaohan Wang, Xinxin Li, Zhifeng Shi, Ying Mao, Hans A. Bechtel, Michael C. Martin, Xiaoxia Xia, Benedetto Marelli, David L. Kaplan, Fiorenzo G. Omenetto, Mengkun Liu, Tiger H. Tao
| Format: | Article |
|---|---|
| Diterbitkan: | Nature Portfolio 2016-10-01 |
Deskripsi
Silk protein fibres are exceptionally strong, owing to their high β-sheet nanocrystal content. Here, the authors use an electron beam to guide silk β-sheet crystals through structural transitions, and visualize the changes by infrared near-field optics, achieving close to molecular-level resolution.