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Advances in Polymer-Based Nanocomposites for Tactile Sensing: Materials, Processing and Applications

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Smart and Functional Polymers".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 1925

Special Issue Editor


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Guest Editor
Laboratory for Organic and Nano Electron Devices & Materials, Institute of Lighting and Energy Photonics, College of Photonics, National Yang Ming Chiao Tung University, Tainan, Taiwan
Interests: nanocomposite semiconductors for field effect transistors; charge transport in heterogeneous semiconductor interfaces; ultra-sensitive tactile sensors for electronic skins; multifunctional fibrous filters for indoor air quality control

Special Issue Information

Dear Colleagues,

With the growing interest of combining electronics with living beings, stimuli-sensitive materials that employ flexible polymers in conjunction with nanostructures have engrossed significant attention for the consciousness of temperature, moisture, light, and touch. Polymer-based nanocomposites may offer influential enhancement in thermal, electrical, optical, chemical, or mechanical properties where a variety of nanostructures with highly conductive, dielectric, piezoelectric, triboelectric, photo-responsive, or stress-sensitive properties have been spotlighted because of their potential in amplifying sensing capability and multifunctionality.

This Special Issue aims to bring together advances and developments that would facilitate polymer-based nanocomposites for innovative tactile sensing. Potential topics include the synthesis of ecofriendly, stimuli-sensitive materials, the design of novel electronic architecture, the strategy of advanced manufacturing and interface integration, and the emerging applications for wearable sensors, health monitoring, and implantable electronics.

Dr. Chien-Wen Hsieh
Guest Editor

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Published Papers (1 paper)

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Research

13 pages, 4551 KiB  
Article
Wearable Capacitive Tactile Sensor Based on Porous Dielectric Composite of Polyurethane and Silver Nanowire
by Gen-Wen Hsieh and Chih-Yang Chien
Polymers 2023, 15(18), 3816; https://doi.org/10.3390/polym15183816 - 19 Sep 2023
Cited by 2 | Viewed by 1431
Abstract
In recent years, the implementation of wearable and biocompatible tactile sensing elements with sufficient response into healthcare, medical detection, and electronic skin/amputee prosthetics has been an intriguing but challenging quest. Here, we propose a flexible all-polyurethane capacitive tactile sensor that utilizes a salt [...] Read more.
In recent years, the implementation of wearable and biocompatible tactile sensing elements with sufficient response into healthcare, medical detection, and electronic skin/amputee prosthetics has been an intriguing but challenging quest. Here, we propose a flexible all-polyurethane capacitive tactile sensor that utilizes a salt crystal-templated porous elastomeric framework filling with silver nanowire as the composite dielectric material, sandwiched by a set of polyurethane films covering silver nanowire networks as electrodes. With the aids of these cubic air pores and conducting nanowires, the fabricated capacitive tactile sensor provides pronounced enhancement of both sensor compressibility and effective relative dielectric permittivity across a broad pressure regime (from a few Pa to tens of thousands of Pa). The fabricated silver nanowire–porous polyurethane sensor presents a sensitivity improvement of up to 4−60 times as compared to a flat polyurethane device. An ultrasmall external stimulus as light as 3 mg, equivalent to an applied pressure of ∼0.3 Pa, can also be clearly recognized. Our all-polyurethane capacitive tactile sensor based on a porous dielectric framework hybrid with conducting nanowire reveals versatile potential applications in physiological activity detection, arterial pulse monitoring, and spatial pressure distribution, paving the way for wearable electronics and artificial skin. Full article
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