Strain sensor
AssigneeThe Hong Kong Polytechnic University
InventorsChing-Hsiang Cheng, Chen Chao, Yun Zhu
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Abstract
A strain sensor (10) for measuring strain greater than 10%, the sensor (10) comprising: an upper polydimethylsiloxane (PDMS) substrate (20) having measurement electrodes (90) extending therethrough; a lower PDMS substrate (30) bonded to a lower surface of the upper PDMS substrate (20), and an upper surface of the lower PDMS substrate (30) having a patterned portion (50); and a conductive fluid (70) contained within the patterned portion (50) in contact with the measurement electrodes (90).
Claims16
A strain sensor for measuring strain greater than 10%, the sensor comprising:
- an upper polydimethylsiloxane (PDMS) substrate having measurement electrodes extending therethrough;
- a lower PDMS substrate bonded to a lower surface of the upper PDMS substrate, and an upper surface of the lower PDMS substrate having a patterned portion;
- and
- a conductive fluid contained within the patterned portion in contact with the measurement electrodes.
A method for manufacturing a strain sensor for measuring strain greater than 10%, the method comprising:
- bonding an upper polydimethylsiloxane (PDMS) to a lower PDMS substrate;
- injecting a conductive fluid via holes in the upper PDMS substrate to be contained in a patterned portion of the lower PDMS substrate;
- and
- filling the holes in the upper PDMS substrate with measurement electrodes that are in contact with the conductive fluid.
Dependencies are inferred from the claim text.