Flexible touch sensor fabricated by double-sided nanoimprint lithography metal transfer

Yang, Muyi; Xu, Kai‐Da; Wang, Liang

doi:10.1088/1361-6528/ab8a90

Cited by 7 publications

(6 citation statements)

References 27 publications

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“…Increasing the dielectric constant is an ideal way to achieve a high initial capacitance and large capacitance variations. The commonly used dielectric layers are PDMS, Ecoflex and PET films 8 , 10 , 12 – 16 , 24 , 28 . Generally, composite materials with high dielectric constants can be used instead of materials with low dielectric constants.…”

Section: Introductionmentioning

confidence: 99%

A new strategy for the fabrication of a flexible and highly sensitive capacitive pressure sensor

Qin

et al. 2021

Microsyst Nanoeng

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The development of flexible capacitive pressure sensors has wide application prospects in the fields of electronic skin and intelligent wearable electronic devices, but it is still a great challenge to fabricate capacitive sensors with high sensitivity. Few reports have considered the use of interdigital electrode structures to improve the sensitivity of capacitive pressure sensors. In this work, a new strategy for the fabrication of a high-performance capacitive flexible pressure sensor based on MXene/polyvinylpyrrolidone (PVP) by an interdigital electrode is reported. By increasing the number of interdigital electrodes and selecting the appropriate dielectric layer, the sensitivity of the capacitive sensor can be improved. The capacitive sensor based on MXene/PVP here has a high sensitivity (~1.25 kPa−1), low detection limit (~0.6 Pa), wide sensing range (up to 294 kPa), fast response and recovery times (~30/15 ms) and mechanical stability of 10000 cycles. The presented sensor here can be used for various pressure detection applications, such as finger pressing, wrist pulse measuring, breathing, swallowing and speech recognition. This work provides a new method of using interdigital electrodes to fabricate a highly sensitive capacitive sensor with very promising application prospects in flexible sensors and wearable electronics.

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Section: Introductionmentioning

confidence: 99%

A new strategy for the fabrication of a flexible and highly sensitive capacitive pressure sensor

Qin

et al. 2021

Microsyst Nanoeng

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“…The patterned inked surfaces are brought into physical contact with the target substrate in the contact printing process. Gravure printing [63], flexographic printing [64], micro-contact printing [65], nanoimprint [66], and screen printing [67] are examples of contact-based printing processes. In non-contact printing, fluid is placed on the target substrate using nozzles in a preprogrammed pattern.…”

Section: Developments In Wearable T Sensing Apparatusesmentioning

confidence: 99%

Revolution in Flexible Wearable Electronics for Temperature and Pressure Monitoring—A Review

2022

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In the last few decades, technology innovation has had a huge influence on our lives and well-being. Various factors of observing our physiological characteristics are taken into account. Wearable sensing tools are one of the most imperative sectors that are now trending and are expected to grow significantly in the coming days. Externally utilized tools connected to any human to assess physiological characteristics of interest are known as wearable sensors. Wearable sensors range in size from tiny to large tools that are physically affixed to the user and operate on wired or wireless terms. With increasing technological capabilities and a greater grasp of current research procedures, the usage of wearable sensors has a brighter future. In this review paper, the recent developments of two important types of wearable electronics apparatuses have been discussed for temperature and pressure sensing (Psensing) applications. Temperature sensing (Tsensing) is one of the most important physiological factors for determining human body temperature, with a focus on patients with long-term chronic conditions, normally healthy, unconscious, and injured patients receiving surgical treatment, as well as the health of medical personnel. Flexile Psensing devices are classified into three categories established on their transduction mechanisms: piezoresistive, capacitive, and piezoelectric. Many efforts have been made to enhance the characteristics of the flexible Psensing devices established on these mechanisms.

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“…The diamond aluminum mesh achieved electrode alignment and overlap, obtaining a transmittance of 94% and anisotropic surface resistivity, with a maximum capacitance variation of the touch sensor unit of up to 41.8%. It has great application potential in flexible touch screens [135]. Kim et al proposed a new method to fabricate capacitive flexible touch screens by depositing two transparent electrodes in a PET film, which is a low-cost approach that can meet the requirements of flexible electronic devices [136].…”

Section: Touch Screens and Display Panelsmentioning

confidence: 99%

Recent Developments in Flexible Transparent Electrode

Wang

et al. 2021

Crystals

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With the rapid development of flexible electronic devices (especially flexible LCD/OLED), flexible transparent electrodes (FTEs) with high light transmittance, high electrical conductivity, and excellent stretchability have attracted extensive attention from researchers and businesses. FTEs serve as an important part of display devices (touch screen and display), energy storage devices (solar cells and super capacitors), and wearable medical devices (electronic skin). In this paper, we review the recent progress in the field of FTEs, with special emphasis on metal materials, carbon-based materials, conductive polymers (CPs), and composite materials, which are good alternatives to the traditional commercial transparent electrode (i.e., indium tin oxide, ITO). With respect to production methods, this article provides a detailed discussion on the performance differences and practical applications of different materials. Furthermore, major challenges and future developments of FTEs are also discussed.

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Flexible touch sensor fabricated by double-sided nanoimprint lithography metal transfer

Cited by 7 publications

References 27 publications

A new strategy for the fabrication of a flexible and highly sensitive capacitive pressure sensor

A new strategy for the fabrication of a flexible and highly sensitive capacitive pressure sensor

Revolution in Flexible Wearable Electronics for Temperature and Pressure Monitoring—A Review

Recent Developments in Flexible Transparent Electrode

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