Abstract
A flexible pressure sensor with a rudimentary, ultra-low cost, and solvent-free fabrication process is presented in this paper. The sensor has a graphite-on-paper stacked paper structure, which deforms and restores its shape when pressure is applied and released, showing an exceptionally fast response and relaxation time of ≈0.4 ms with a sensitivity of −5%/Pa. Repeatability of the sensor over 1000 cycles indicates an excellent long-term stability. The sensor demonstrated fast and reliable human touch interface, and successfully integrated into a robot gripper to detect grasping forces, showing high promise for use in robotics, human interface, and touch devices.
Highlights
Developing flexible and high sensitivity sensors for robot hands is of interest for accomplishing a wide range of tasks such as object manipulation, articulation, and gesture activities
We present the design, fabrication, and characterisation of a novel ultra-low cost GoP resistive pressure sensor with a very simple fabrication method
The manual fabrication process using a pencil-drawn approach could lead to the the variability of the dimensions of the sensing elements
Summary
Developing flexible and high sensitivity sensors for robot hands is of interest for accomplishing a wide range of tasks such as object manipulation, articulation, and gesture activities. The requirements for these sensors include but are not limited to (1) high sensitivity and a wide measurement range,. (4) low cost and simplicity for implementation/integration into robot hands. These sensors can range from simple two-state switches to high precision pressure/tactile sensors [1,2,3,4,5]. The devices described in this table are ordered by the sensing principle to allow for a more relevant comparison
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