Molding-Free Fully-Printed Flexible Tactile Sensors With Performance- Enhancing Microstructures

Ding, Qifan; Chen, Huyue; Wu, Jiahao; Zheng, Tianxiang; Zhang, Wen Ming; Shao, Li

doi:10.1109/jsen.2022.3174450

Cited by 5 publications

(2 citation statements)

References 36 publications

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“…With a piezoresistive pressure sensor, the dielectric can be replaced with a conductive layer that changes resistivity when pressure is applied, allowing it to measure pressure change. 100 Manufacturing steps need be only partially altered to change from a capacitive to a piezoresistive sensor, as the dielectric layer can be altered and replaced to form a different sensor. This sort of pressure sensor can be used for tactile sensing as it conforms to a surface.…”

Section: Sandry Et Al (Continued From Previous Page)mentioning

confidence: 99%

Sensors for Smart Agriculture and Beyond…

2023

Electrochem. Soc. Interface

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Section: Sandry Et Al (Continued From Previous Page)mentioning

confidence: 99%

Sensors for Smart Agriculture and Beyond…

2023

Electrochem. Soc. Interface

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“…In particular, LMs can remain in a liquid state at ambient temperature and have been employed as sensing substances in the advancement of flexible soft mechanisms [17]. In the sensing structure of soft tactile sensors, flexible arrays can detect pressure distributions in large areas [21], [22], thereby reducing the number of wires required [23], [24]. Kim et al [25] introduced a 3-D dorm structure-based LM microchannel array to detect multidirectional forces.…”

Section: Introductionmentioning

confidence: 99%

Design, Fabrication, and Validation of a Flexible Tactile Sensor for a Hand Prosthesis

Nguyen,

Xie,

et al. 2024

IEEE Sensors J.

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This article presents the development, fabrication, and validation of a flexible tactile sensor designed for integration into a hand prosthesis. The proposed sensor design encompasses two distinct prototypes: a fingertip tactile sensor and a palm tactile sensor. Employing a dual-layer structure composed of liquid metal (LM) and elastic fibers, these sensors exhibit enhanced sensing capabilities in multiple axes while retaining the capability to deform. The fabrication process includes mold preparation and silicon formulation, body sensor fabrication, Galinstan injection, wire assembly, and creation of a shaped cover for enclosing the tactile palm sensor. A dedicated signal processing circuit is implemented to accommodate the typically small-magnitude and noisy output signals that are characteristic of resistorbased sensors. To enable this signal processing, a filter and programmable gain amplifier-analog-to-digital converter (ADC) are used for signal conditioning. Finally, experimental data are collected through a computer-microcontroller communication link and displayed through a user interface (UI). The results of the sensor validation experiment demonstrate that the finger tactile sensor can provide 1.557, 0.944, and 1.412 mV/N of F x , F y , and F z , respectively, with low-drifting error (0.0265, 0.0145, and 0.0198 mV) and multiaxis sensing capacity, aligning effectively with the operational requisites of a hand prosthetic robot.

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Review: Progress on 3D printing technology in the preparation of flexible tactile sensors

Xu,

Tang

2023

J Mater Sci

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Molding-Free Fully-Printed Flexible Tactile Sensors With Performance- Enhancing Microstructures

Cited by 5 publications

References 36 publications

Sensors for Smart Agriculture and Beyond…

Sensors for Smart Agriculture and Beyond…

Design, Fabrication, and Validation of a Flexible Tactile Sensor for a Hand Prosthesis

Review: Progress on 3D printing technology in the preparation of flexible tactile sensors

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