MXene/ZIF-67/PAN Nanofiber Film for Ultra-sensitive Pressure Sensors DOI

Xiyao Fu,

Junzhi Li, Dongdong Li

et al.

ACS Applied Materials & Interfaces, Journal Year: 2022, Volume and Issue: 14(10), P. 12367 - 12374

Published: March 4, 2022

Flexible pressure sensors may be used in electronic skin (e-skin), artificial intelligence devices, and disease diagnosis, which require a large response range high sensitivity. An appropriate design of the structure active layer can help effectively solve this problem. Herein, we aim at developing wearable sensor using MXene/ZIF-67/polyacrylonitrile (PAN) nanofiber film, fabricated by electrospinning technology. Owing to rough three-dimensional network architecture, MXene/ZIF-67/PAN film-based device displays broad working (0-100 kPa), good sensitivity (62.8 kPa-1), robust mechanical stability (over 10,000 cycles), fast response/recovery time (10/8 ms). Moreover, detect differentiate between different body motion information, including elbow bending, finger movements, wrist pulses. Overall, conductive shows potential field electronics medical devices.

Language: Английский

Highly Sensitive Capacitive Pressure Sensors over a Wide Pressure Range Enabled by the Hybrid Responses of a Highly Porous Nanocomposite DOI Creative Commons

Kyoungho Ha,

Weiyi Zhang, Hongwoo Jang

et al.

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(48)

Published: Sept. 27, 2021

Abstract Past research aimed at increasing the sensitivity of capacitive pressure sensors has mostly focused on developing dielectric layers with surface/porous structures or higher constants. However, such strategies have only been effective in improving sensitivities low ranges (e.g., up to 3 kPa). To overcome this well‐known obstacle, herein, a flexible hybrid‐response sensor (HRPS) composed an electrically conductive porous nanocomposite (PNC) laminated ultrathin layer is devised. Using nickel foam template, PNC fabricated carbon nanotubes (CNTs)‐doped Ecoflex be 86% and conductive. The exhibits hybrid piezoresistive piezocapacitive responses, resulting significantly enhanced (i.e., more than 400%) over wide ranges, from 3.13 kPa −1 within 0–1 0.43 30–50 kPa. effect responses differentiated porosity high constants by comparing HRPS its purely counterparts. Fundamental understanding prediction optimal CNT doping are achieved through simplified analytical models. able measure pressures as subtle temporal arterial pulse large footsteps.

Language: Английский

Citations

273
Polydimethylsiloxane Composites Characterization and Its Applications: A Review DOI Open Access
Ronaldo Ariati, Flaminio Sales, Andrews Souza

et al.

Polymers, Journal Year: 2021, Volume and Issue: 13(23), P. 4258 - 4258

Published: Dec. 5, 2021

Polydimethylsiloxane (PDMS) is one of the most promising elastomers due its remarkable proprieties such as good thermal stability, biocompatibility, corrosion resistance, flexibility, low cost, ease use, chemically inertia, hyperplastic characteristics, and gas permeability. Thus, it can be used in areas microfluidic systems, biomedical devices, electronic components, membranes for filtering pervaporation, sensors, coatings. Although pure PDMS has mechanical properties, modulus elasticity strength, improved by mixing with other polymers adding particles or reinforcements. Fiber-reinforced proved to a alternative manufacturing flexible displays, batteries, wearable tactile energy harvesting systems. particulates are often separation liquids from wastewater means porosity followed hydrophobicity. Waxes beeswax paraffin have materials capable improving properties hydrophobic, corrosion-resistant, thermal, optical PDMS. Finally, when blended poly (vinyl chloride-co-vinyl acetate), becomes highly efficient membrane applications. However, best our knowledge there few works dedicated review comparison different composites. Hence, this will focused on composites, their respective applications, properties. Generally, combination elastomer fibers, particles, waxes, polymers, others discussed, aim producing that demonstrates wide applications material how tailored characteristics reached custom

Language: Английский

Citations

243
Soft Capacitive Pressure Sensors: Trends, Challenges, and Perspectives DOI

Kyoungho Ha,

Heeyong Huh, Zhengjie Li

et al.

ACS Nano, Journal Year: 2022, Volume and Issue: 16(3), P. 3442 - 3448

Published: March 9, 2022

Soft pressure sensors are critical components of e-skins, which playing an increasingly significant role in two burgeoning fields: soft robotics and bioelectronics. Capacitive (CPS) popular given their mechanical flexibility, high sensitivity, signal stability. After decades rapid development, e-skins based on CPS able to achieve human-skin-like softness sensitivity. However, there remain major roadblocks the way for practical application CPS: decay sensitivity with increased coupled response between in-plane stretch out-of-plane pressure. In addition existing strategies building porous and/or dielectric constant dielectrics, any other promising methods overcome those bottlenecks? Are further considerations widespread deployment e-skins? This perspective aims shed some light topics.

Language: Английский

Citations

161
Ultrasensitive Linear Capacitive Pressure Sensor with Wrinkled Microstructures for Tactile Perception DOI Creative Commons

Chunyu Lv,

Chengcheng Tian,

Jiashun Jiang

et al.

Advanced Science, Journal Year: 2023, Volume and Issue: 10(14)

Published: March 15, 2023

Ultrasensitive flexible pressure sensors with excellent linearity are essential for achieving tactile perception. Although microstructured dielectrics have endowed capacitive ultrahigh sensitivity, the compromise of sensitivity increasing is an issue yet to be resolved. Herein, a spontaneously wrinkled MWCNT/PDMS dielectric layer proposed realize and The synergistic effect high constant microstructures enables sensor exhibit up 21 kPa 1.448

Language: Английский

Citations

131
A do-it-yourself approach to achieving a flexible pressure sensor using daily use materials DOI
Zaihua Duan, Yadong Jiang, Qi Huang

et al.

Journal of Materials Chemistry C, Journal Year: 2021, Volume and Issue: 9(39), P. 13659 - 13667

Published: Jan. 1, 2021

In order to solve the shortcomings of complex manufacturing process and high cost flexible pressure sensors, a low-cost eco-friendly sensor is achieved using simple do-it-yourself (DIY) approach.

Language: Английский

Citations

109
A review on polymers and their composites for flexible electronics DOI Creative Commons
Lixia Li, Lijing Han, Haiqing Hu

et al.

Materials Advances, Journal Year: 2022, Volume and Issue: 4(3), P. 726 - 746

Published: Dec. 22, 2022

The non-functional materials such as substrate and adhesive materials, functional (piezoelectric composites, conductive composites dielectric composites) used for flexible electronics are summarized in detail.

Language: Английский

Citations

90
Durable washable wearable antibacterial thermoplastic polyurethane/carbon nanotube@silver nanoparticles electrospun membrane strain sensors by multi-conductive network DOI
An Huang, Yu Guo, Yiwei Zhu

et al.

Advanced Composites and Hybrid Materials, Journal Year: 2023, Volume and Issue: 6(3)

Published: May 16, 2023

Language: Английский

Citations

79
Recent Advances of Capacitive Sensors: Materials, Microstructure Designs, Applications, and Opportunities DOI Creative Commons
Allen J. Cheng, Liao Wu, Sha Zhao

et al.

Advanced Materials Technologies, Journal Year: 2023, Volume and Issue: 8(11)

Published: April 4, 2023

Abstract Capacitive sensors have advanced rapidly to create new applications including wearable for human health monitoring, integrated intelligent surgical devices, tactile interfaces robots. Compared other types of pressure or strain sensors, capacitive require low power consumption and offer excellent linearity fast response time. Herein, this review concentrates on the recent advancements developments high‐performance with materials microstructures, which significantly enhance their sensitivity, accuracy, linearity, This work also provides a applications, from current challenges future opportunities are proposed discussed.

Language: Английский

Citations

73
Progress and challenges in flexible capacitive pressure sensors: Microstructure designs and applications DOI
Yuan Hao,

Qiran Zhang,

Tong Zhou

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 149926 - 149926

Published: Feb. 23, 2024

Language: Английский

Citations

54
Flexible Capacitive Pressure Sensor with High Sensitivity and Wide Range Based on a Cheetah Leg Structure via 3D Printing DOI
Weiqiang Hong, Xiaohui Guo, Tianxu Zhang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(39), P. 46347 - 46356

Published: Sept. 21, 2023

Flexible pressure sensors can be used in human-computer interaction and wearable electronic devices, but one main challenge is to fabricate capacitive with a wide range high sensitivity. Here, we designed sensor based on bionic cheetah leg microstructure, validated the benefits of microstructure design, optimized structural feature parameters using 3D printing technology. The inspired by shape has sensitivity (0.75 kPa-1), linear sensing (0-280 kPa), fast response time roughly 80 ms, outstanding durability (24,000 cycles). Furthermore, recognize finger-operated mouse, monitor human motion, transmit Morse code information. This work demonstrates that hold considerable promise for use devices.

Language: Английский

Citations

51