High-Q silk fibroin whispering gallery microresonator.
We have experimentally demonstrated an on-chip all-silk fibroin whispering gallery mode microresonator by using a simple molding and solution-casting technique. The quality factors of the fabricated silk protein microresonators are on the order of 105. A high-sensitivity thermal sensor was realized in this silk fibroin microtoroid with a sensitivity of -1.17 nm/K, that is 8 times higher than previous WGM resonator-based thermal sensors. This opens the way to fabricate biodegradable and biocompatible protein based microresonators on a flexible chip for biophotonics applications.
Linhua
L
Xu
Xuefeng
X
Jiang
Guangming
G
Zhao
Ding
D
Ma
Hu
H
Tao
Zhiwen
Z
Liu
Fiorenzo G
FG
Omenetto
Lan
L
Yang