Piezoresistive pressure sensor based on conjugated polymer framework for pedometer and smart tactile glove applications

Gupta, Neelam; Adepu, Vivek; Tathacharya, Manav; Siraj, Sohel; Pal, Sarbani; Sahatiya, Parikshit; Kuila, Biplab Kumar

doi:10.1016/j.sna.2022.114139

Cited by 13 publications

(7 citation statements)

References 46 publications

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“…Researchers have shown that foams can behave as resistive materials [19][20][21][22]. NCPF amplifies the conductive properties of foam, increasing the signal-to-noise ratio while retaining the comfortable foam feel.…”

Section: Introductionmentioning

confidence: 99%

Foam Pressure Mapping with Optimized Electrodes

Sundet,

Merrell,

Tree

et al. 2024

Metrology

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Nano-composite piezo-responsive foam (NCPF) is an inexpensive foam that can be used to measure a static load while still providing a comfortable interface. The purpose of this study was to create a modularized foam-based pressure measurement system. A measurement system was developed that uses an interdigitated electrode applied to the NCPF. Applied pressure changes the impedance of the NCPF, which, in turn, is converted into a voltage using a voltage divider. A modular measurement system is described that uses an ATtiny 1627 microcontroller to measure the pressure at nine electrodes. The nine electrode modules are controlled by an ESP32 microcontroller that aggregates the data and wirelessly transmits the data to a tablet. The modular system was demonstrated with 1008 individual electrodes. The characterization of the electrode combined with the NCPF is presented, along with optimization of the electrode geometry.

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Section: Introductionmentioning

confidence: 99%

Foam Pressure Mapping with Optimized Electrodes

Sundet,

Merrell,

Tree

et al. 2024

Metrology

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“…For a robot to perform tasks based on tactile perception, it is necessary to incorporate a tactile sensor that generates tactile signals. Various types of tactile sensors, such as capacitive [ 4 , 5 ], piezoresistive [ 6 , 7 ], optical [ 8 , 9 ], piezoelectric [ 10 , 11 ], and magnetic sensors [ 12 , 13 ], have been developed for robots to recognize their environments during interactions by generating tactile signals. The signal generated by the aforementioned tactile sensors enables robots to execute sophisticated tasks using robot grippers that were once deemed challenging or unfeasible.…”

Section: Introductionmentioning

confidence: 99%

Effects of Sensing Tactile Arrays, Shear Force, and Proprioception of Robot on Texture Recognition

Yang

Kim

Lim

2023

Sensors

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In robotics, tactile perception is important for fine control using robot grippers and hands. To effectively incorporate tactile perception in robots, it is essential to understand how humans use mechanoreceptors and proprioceptors to perceive texture. Thus, our study aimed to investigate the impact of tactile sensor arrays, shear force, and the positional information of the robot’s end effector on its ability to recognize texture. A deep learning network was employed to classify tactile data from 24 different textures that were explored by a robot. The input values of the deep learning network were modified based on variations in the number of channels of the tactile signal, the arrangement of the tactile sensor, the presence or absence of shear force, and the positional information of the robot. By comparing the accuracy of texture recognition, our analysis revealed that tactile sensor arrays more accurately recognized the texture compared to a single tactile sensor. The utilization of shear force and positional information of the robot resulted in an improved accuracy of texture recognition when using a single tactile sensor. Furthermore, an equal number of sensors placed in a vertical arrangement led to a more accurate distinction of textures during exploration when compared to sensors placed in a horizontal arrangement. The results of this study indicate that the implementation of a tactile sensor array should be prioritized over a single sensor for enhanced accuracy in tactile sensing, and the use of integrated data should be considered for single tactile sensing.

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“…Stretchable soft electronics can be applied in various fields, including wearable devices, biomedical applications, and robotic systems [19][20][21][22]. Stretchable materials, such as conducting polymers [23][24][25][26], ionic conductors [27], and liquid metals [28], can be used for conformal contact in interfaces across stretchable electronics applications. Alternatively, stretchable structures such as serpentine [29,30], mesh [31], longitudinal waves [32], and micro-crack methods [33] are utilized to incorporate rigid chips with stretchable components.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensionally Printed Expandable Structural Electronics Via Multi-Material Printing Room-Temperature-Vulcanizing (RTV) Silicone/Silver Flake Composite and RTV

Lee

Park

et al. 2023

Polymers

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Three-dimensional (3D) printing has various applications in many fields, such as soft electronics, robotic systems, biomedical implants, and the recycling of thermoplastic composite materials. Three-dimensional printing, which was only previously available for prototyping, is currently evolving into a technology that can be utilized by integrating various materials into customized structures in a single step. Owing to the aforementioned advantages, multi-functional 3D objects or multi-material-designed 3D patterns can be fabricated. In this study, we designed and fabricated 3D-printed expandable structural electronics in a substrateless auxetic pattern that can be adapted to multi-dimensional deformation. The printability and electrical conductivity of a stretchable conductor (Ag-RTV composite) were optimized by incorporating a lubricant. The Ag-RTV and RTV were printed in the form of conducting voxels and frame voxels through multi-nozzle printing and were arranged in a negative Poisson’s ratio pattern with a missing rib structure, to realize an expandable passive component. In addition, the expandable structural electronics were embedded in a soft actuator via one-step printing, confirming the possibility of fabricating stable interconnections in expanding deformation via a missing rib pattern.

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Piezoresistive pressure sensor based on conjugated polymer framework for pedometer and smart tactile glove applications

Cited by 13 publications

References 46 publications

Foam Pressure Mapping with Optimized Electrodes

Foam Pressure Mapping with Optimized Electrodes

Effects of Sensing Tactile Arrays, Shear Force, and Proprioception of Robot on Texture Recognition

Three-Dimensionally Printed Expandable Structural Electronics Via Multi-Material Printing Room-Temperature-Vulcanizing (RTV) Silicone/Silver Flake Composite and RTV

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