Crosstalk‐Free, Stretching‐Insensitive Sensor Based on Arch‐Bridge Architecture for Tactile Mapping with Parallel Addressing Strategy toward Million‐Scale‐Pixels Processing

Abstract

In the field of biomimetic electronics, flexible sensors with both high resolution and large size are attracting a lot of attention. However, attempts to increase the number of sensor pixels have been thwarted by the need for complex inner circuits and the resulting interferences with the output. Technological challenges, such as real-time spatiotemporal mapping and long-time reliability, must be resolved for large-scale sensor matrices. This paper reports a simple and robust sensor with an arch-bridge architecture (ABA) to address these challenges. The device, which consists of an anti-icing all-transparent material system, is fabricated by immobilizing ABA ionic arrays on predefined grooves on the substrate. It systematically integrates ABA structure-designing, resistance-position-sensing, and parallel-addressing logic, allowing for an improvement of three orders of magnitude in the scanning speed (million-scale pixels) without logical "diagnose confusion." In addition, it can withstand 100 000 stretching cycles without functional failure. It is also resistant to interferences from stretching. humidity, wet surfaces, and power lines. The proposed strategy is envisaged to serve as a general solution for high-density, large-area tactile sensors in various applications.

A Stretchable and Conformable Sensor Fabricated by PVDF Film for human dynamic monitoring

“…On the other hand, the support layer uses silica gel and thermoplastic elastomer, both of which process thermal insulation properties, thereby reducing the thermal interference to the PVDF film, then reducing the impact on the output further. That is, the stretchable and conformal sensor had improved stability in sensor responses compared to that of conventional-arch (no hyperelastic layer) [25] or flat (no special construction) sensors [26,27]. In addition, there is a strong spike in the output signal in Fig.…”

Bioinspired Suspended Sensing Membrane Array with Modulable Wedged‐Conductive Channels for Crosstalk‐Free and High‐Resolution Detection

“…A high‐density flexible sensor array is particularly susceptible to buy signal interference between adjacent sensors (crosstalk) due to its high integration and dense layout, leading to inaccuracies in data collection. [ 26 , 27 ] These disturbances arise from the diffusion of mechanical strain [ 22 , 28 , 29 ] and electrical signals generated by common conduction and electromagnetic induction. [ 23 , 30 , 31 ] Nowadays, there are two main strategies to decrease the crosstalk in a high‐density sensor array.…”

A Flexible Dual‐Mode Capacitive Sensor for Highly Sensitive Touchless and Tactile Sensing in Human‐Machine Interactions

“…[5] Over the past decade, HMI has undergone significant DOI: 10.1002/admt.202301685 changes, [6] and greatly driven by the emergence of flexible electronic sensors, [7,8] especially flexible tactile sensors. Sun et al [9,10] proposed a flexible stretchable tactile screen based on hydrogel and PDMS for HMI, and improved the scanning speed of multipixel touch screens through a parallel addressing logic strategy to achieve the real-time perception of multi-point pressure and spatial positioning. Zhang et al [11] proposed a very light and highly sensitive flexible piezoresistive tactile sensor and further developed a wristworn device for gesture HMI.…”