An all-optical multidirectional mechano-sensor inspired by biologically mechano-sensitive hair sensilla

An all-optical multidirectional mechano-sensor inspired by biologically mechano-sensitive hair sensilla

Mechano-sensitive hair-like sensilla (MSHS) have an ingenious and compact three-dimensional structure and have evolved widely in living organisms to perceive multidirectional mechanical signals. Nearly all MSHS are iontronic or electronic, including their biomimetic counterparts. Here, an all-optica...

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Bibliographic Details
Published in:Nature communications 2024-04, Vol.15 (1), p.2906-2906
Main Authors: Li, Yuxiang, Guo, Zhihe, Zhao, Xuyang, Liu, Sheng, Chen, Zhenmin, Dong, Wen-Fei, Wang, Shixiang, Sun, Yun-Lu, Wu, Xiang
Format: Article
Language:eng
Subjects:
Animals
Biomimetics
Electronics
Hair
Mechanical Phenomena
Mechanical stimuli
Mechanotransduction
Real time
Robotics
Sensilla
Sensors
Transduction
Vibrations
Vibrissae
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Summary:Mechano-sensitive hair-like sensilla (MSHS) have an ingenious and compact three-dimensional structure and have evolved widely in living organisms to perceive multidirectional mechanical signals. Nearly all MSHS are iontronic or electronic, including their biomimetic counterparts. Here, an all-optical mechano-sensor mimicking MSHS is prototyped and integrated based on a thin-walled glass microbubble as a flexible whispering-gallery-mode resonator. The minimalist integrated device has a good directionality of 32.31 dB in the radial plane of the micro-hair and can detect multidirectional displacements and forces as small as 70 nm and 0.9 μN, respectively. The device can also detect displacements and forces in the axial direction of the micro-hair as small as 2.29 nm and 3.65 μN, respectively, and perceive different vibrations. This mechano-sensor works well as a real-time, directional mechano-sensory whisker in a quadruped cat-type robot, showing its potential for innovative mechano-transduction, artificial perception, and robotics applications.
ISSN:2041-1723