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Updated: Aug 16, 2025
Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique
Published on: March 24, 2023
Three-dimensional AgNps@Mxene@PEDOT:PSS composite hybrid foam as a piezoresistive pressure sensor with ultra-broad
Ye Zhen1, Vundrala Sumedha Reddy1, Brindha Ramasubramanian1
1Department of Mechanical Engineering, Centre for Nanotechnology and Sustainability, National University of Singapore, Singapore, 119260 Singapore.
Abstract:
Piezoresistive pressure sensors are becoming increasingly popular for their applications in human motion detection, wearable electronics, health monitoring, and man-machine interfaces. Sensors with superior sensitivity and a broad range of sensing are desirable for practical implementation. To achieve those, a low-cost, scalable and simple fabrication technique of dip coating Ti3C2 (MXene), PEDOT:PSS, and AgNPs onto a melamine foam is proposed. The prepared sensor demonstrated sensitivity of 414.27 kPa-1 at (4.17-12.98 kPa), 182.52 kPa-1 at (12.98-94.55 kPa), 317.78 kPa-1 at (94.55 kPa-1.94 MPa), 164.32 kPa-1 at (> 1.94 MPa), extraordinaire detecting range 977.6 N and outstanding repeatability. The sensor was successfully applied for the real-time detection of heartbeat pulse, limb movement, human weight and powered an LED. Furthermore, an integrated circuit design with sensors had the ability to identify spatial pressure distribution and visualize it on a pressure map.
Supplementary Information:
The online version contains supplementary material available at 10.1007/s10853-022-08012-y.
