Bioinspired Engineering of Fillable Gradient Structure into Flexible Capacitive Pressure Sensor Toward Ultra-High Sensitivity and Wide Working Range.
Macromol Rapid Commun
; 44(22): e2300420, 2023 Nov.
Article
en En
| MEDLINE
| ID: mdl-37775102
ABSTRACT
Tactile sensing is required for electronic skin and intelligent robots to function properly. However, the dielectric layer's poor structural compressibility in conventional pressure sensors results in a limited pressure sensing range and low sensitivity. To solve this issue, a flexible pressure sensor with a crocodile-inspired fillable gradient structure is provided. The fillable gradient structure and grooves in the pressure sensor accommodate the deformed microstructure that permits the enhancement of the media layer compressibility via COMSOL finite element simulation and optimization. The pressure sensor exhibits a high sensitivity of up to 0.97 k Pa-1 (0-4 kPa), a wide pressure detection range (7 Pa-380 kPa), and outstanding repeatability. The sensor can detect Morse code, robotic grabbing, and human motion monitoring. As a result, flexible sensors with a bionic fillable gradient structure pave the way for wearable devices and offer a novel method for achieving highly precise tactile perception.
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Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Dispositivos Electrónicos Vestibles
Tipo de estudio:
Diagnostic_studies
Límite:
Humans
Idioma:
En
Revista:
Macromol Rapid Commun
Año:
2023
Tipo del documento:
Article