scholarly journals Flexible Tactile Sensor Based on Patterned Ag-Nanofiber Electrodes through Electrospinning

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2413
Author(s):  
Mengxiao Chen ◽  
Zhe Wang ◽  
Yu Zheng ◽  
Qichong Zhang ◽  
Bing He ◽  
...  
Keyword(s):  
Sensor Array ◽  
Mechanical Performance ◽  
Electrode Array ◽  
Tactile Sensor ◽  
Triboelectric Nanogenerator ◽  
Research Attention ◽  
Electrode Layer ◽  
Flexible Devices ◽  
Pressure Mapping ◽  
Pressure Sensitive

The growing demand for intelligent equipment has greatly inspired the development of flexible devices. Thus, disparate flexible multifunctional devices, including pressure sensitive flexible/stretchable displays, have drawn worldwide research attention. Electrodes maintaining conductivity and mechanical strength against deformations are indispensable components in all prospective applications. In this work, a flexible pressure mapping sensor array is developed based on patterned Ag-nanofibers (Ag-NFs) electrode through electrospinning and lithography. The metallic Ag layer is sputtered onto the electrospinning polyvinyl alcohol (PVA) NFs. A uniform and super conductive electrode layer with outstanding mechanical performance is thus formed after dissolving PVA. Followed by the traditional lithography method, a patterned electrode array (4 × 4 sensors) is obtained. Based on the newly developed triboelectric nanogenerator (TENG) technology, a flexible pressure-mapping sensor with excellent stability towards bending deformations is further demonstrated. Moreover, a letter “Z” is successfully visualized by this pressure sensor array, encouraging more human–machine interactive implementations, such as multi-functional tactile screens.

P‐65: The Thickness of Pressure Sensitive Adhesive and Modulus Influence on Foldable Display's Cover Mechanical Performance

2021 ◽  
Vol 52 (1) ◽  
pp. 1321-1324
Author(s):  
Guillermo Fernandez Zapico ◽  
Naoki Takahara ◽  
Kazutoshi Furuzono ◽  
Ryoh Takahashi ◽  
Fumihiko Kawauchi ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
Pressure Sensitive Adhesive ◽  
Pressure Sensitive

scholarly journals 2.5D Flexible Wind Sensor Using Differential Plate Capacitors

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 3101
Author(s):  
Yu Wan ◽  
Zhenxiang Yi
Keyword(s):  
Wind Speed ◽  
Wind Direction ◽  
Parallel Plate ◽  
Electrode Array ◽  
Copper Electrode ◽  
Windward Side ◽  
Leeward Side ◽  
Electrode Layer ◽  
Young’S Moduli ◽  
Speed Up

In this paper, a novel 2.5-dimensional (2.5D) flexible wind sensor is proposed based on four differential plate capacitors. This design consists of a windward pillar, two electrode layers, and a support layer, which are all made of polydimethylsiloxane (PDMS) with different Young’s moduli. A 2 mm × 2 mm copper electrode array is located on each electrode layer, forming four parallel plate capacitors as the sensitive elements. The wind in the xy-plane tilts the windward pillar, decreasing two capacitances on the windward side and increasing two capacitances on the leeward side. The wind in the z-axis depresses the windward pillar, resulting in an increase of all four capacitances. Experiments demonstrate that this sensor can measure the wind speed up to 23.9 m/s and the wind direction over the full 360° range of the xy-plane. The sensitivities of wind speed are close to 4 fF·m−1·s and 3 fF·m−1·s in the xy-plane and z-axis, respectively.

A flexible field-limited ordered ZnO nanorod-based self-powered tactile sensor array for electronic skin

Nanoscale ◽  
2016 ◽  
Vol 8 (36) ◽  
pp. 16302-16306 ◽  
Author(s):  
W. Deng ◽  
L. Jin ◽  
B. Zhang ◽  
Y. Chen ◽  
L. Mao ◽  
...  
Keyword(s):  
Sensor Array ◽  
Tactile Sensor ◽  
Zno Nanorod ◽  
Electronic Skin ◽  
Tactile Sensor Array ◽  
Self Powered

Tactile Sensor Array with Tertiary Leaf-Vein Structures and Position-Encoded Capacity

2021 ◽  
pp. 1-1
Author(s):  
Chun-Peng Jiang ◽  
Nan Zhao ◽  
Gen-Cai Shen ◽  
Zu-De Lin ◽  
Bin Yang ◽  
...  
Keyword(s):  
Sensor Array ◽  
Tactile Sensor ◽  
Leaf Vein ◽  
Tactile Sensor Array

scholarly journals A Triboelectric-Based Artificial Whisker for Reactive Obstacle Avoidance and Local Mapping

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Peng Xu ◽  
Xingyu Wang ◽  
Siyuan Wang ◽  
Tianyu Chen ◽  
Jianhua Liu ◽  
...  
Keyword(s):  
Obstacle Avoidance ◽  
Autonomous Robots ◽  
Tactile Sensor ◽  
Triboelectric Nanogenerator ◽  
Tactile Sensors ◽  
Biologically Inspired ◽  
External Stimulation ◽  
Autonomous Surface Vehicles ◽  
Electrostatic Induction ◽  
Contact Position

Since designing efficient tactile sensors for autonomous robots is still a challenge, this paper proposes a perceptual system based on a bioinspired triboelectric whisker sensor (TWS) that is aimed at reactive obstacle avoidance and local mapping in unknown environments. The proposed TWS is based on a triboelectric nanogenerator (TENG) and mimics the structure of rat whisker follicles. It operates to generate an output voltage via triboelectrification and electrostatic induction between the PTFE pellet and copper films (0.3 mm thickness), where a forced whisker shaft displaces a PTFE pellet (10 mm diameter). With the help of a biologically inspired structural design, the artificial whisker sensor can sense the contact position and approximate the external stimulation area, particularly in a dark environment. To highlight this sensor’s applicability and scalability, we demonstrate different functions, such as controlling LED lights, reactive obstacle avoidance, and local mapping of autonomous surface vehicles. The results show that the proposed TWS can be used as a tactile sensor for reactive obstacle avoidance and local mapping in robotics.

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