Self-powered ultra-flexible infrared sensor based on PVA-PEDOT: PSS/Ti3C2Tx composite film

Wu, Fengming; Li, Yeti; Zhang, Haonan; Jiang, Haoze; Wei, Wuning; Deng, Chenghao

doi:10.1016/j.apsusc.2023.158212

Cited by 4 publications

(4 citation statements)

References 53 publications

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“…TENG has a notable capability to function as a pressure sensor array (4 × 4 pixels) for trajectory tracking, with a high sensitivity of 221 V-kPa-1. As shown in Figure 5C, Wu developed sensors using composite thin-film infrared sensor arrays for imaging human hand (Wu et al, 2023), indicating potential use of self-powered infrared sensor in wearable non-visual sensing and smart sensing applications. As shown in Figure 5D, piezoelectric sensors were designed for real-time monitoring of meteorological wind and rain (Li et al, 2023b).…”

Section: Applications In Self-powered Iot Devices 41 Energy Harvestingmentioning

confidence: 99%

Recent progress in piezoelectric thin films as self-powered devices: material and application

Song,

Hou,

Jiang

2024

Front. Mater.

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Piezoelectric materials have become a key component in sensors and actuators in many industrial fields, such as energy harvesting devices, self-powered structures, biomedical devices, nondestructive testing, owing to the novel properties including high piezoelectric coefficient and electromechanical coupling factors. Piezoelectric thin films integrated on silicon substrates are widely investigated for their high performance and low manufacturing costs to meet the requirement of sensor networks in internet of things (IoT). The aim of this work is to clarify the application and design structure of various piezoelectric thin films types, synthesis methods, and device processes. Based on latest literature, the process of fabricating thin film sensors is outlined, followed by a concise overview of techniques used in microelectromechanical systems (MEMS) processing that can integrate more complex functions to obtain relevant information in surrounding environment. Additionally, by addressing piezoelectric thin films sensors as a cutting-edge technology with the ability to produce self-powered electronic devices, this work delivers incisive conclusions on all aspects of piezoelectric sensor related features. A greater understanding of piezoelectricity is necessary regarding the future development and industry challenges.

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Section: Applications In Self-powered Iot Devices 41 Energy Harvestingmentioning

confidence: 99%

Recent progress in piezoelectric thin films as self-powered devices: material and application

Song,

Hou,

Jiang

2024

Front. Mater.

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“…With the development of electronic information and Internet technology, flexible wearable electronic products have attracted widespread attention [ 1 , 2 , 3 , 4 , 5 ]. Flexible sensors are currently used in motion-related fields such as electronic products [ 6 , 7 ], human interaction [ 8 , 9 ], and electronic skin [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Gradient Polyurethane and Its Performance for Flexible Sensors

Ning,

Gong,

et al. 2024

Polymers

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Flexible sensors are prone to the problems of slow recovery rate and large residual strain in practical use. In this paper, a polyurethane functional composite with a gradient change in elastic modulus is proposed as a flexible sensor to meet the recovery rate and residual strain without affecting the motion. Different hard and soft segment ratios are used to synthesize a gradient polyurethane structure. The conductive percolation threshold was obtained between 45 wt% and 50 wt% of flake silver powder. Both gradient polyurethane and gradient polyurethane composites demonstrated that gradient materials can increase the recovery rate and reduce residual strain. The gradient polyurethane composites had a tensile strength of 3.26 MPa, an elastic modulus of 2.58 MPa, an elongation at break of 245%, a sensitivity coefficient of 1.20 at 0–25% deformation, a sensitivity coefficient of 11.38 at 25–75% deformation, a rate of recovery of 1.95 s at a time, and a resistance to fatigue (over 1000 cycles at a fixed strain of 20% showed a stable electrical response). The sensing performance under different cyclic strain frequencies was also investigated. The process has practical applications in the field of wearable skin motion and health monitoring.

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“…Flexible multifunctional electronic components play a crucial role in the development of smart wearables . These components have shown great potential in a variety of applications, including friction nanogenerators, self-powered sensing systems, wearable flexible sensors, and energy storage . Flexible wearable devices rely on electronic transmission for both information and energy transfer during operation.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Field-Induced Aligned Graphene/Cellulose Conductive Composites for Electroluminescent Devices

Zhi,

Xu,

et al. 2023

ACS Appl. Nano Mater.

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Graphene is a promising reinforcement for fiber composite materials in flexible wearable applications because of its exceptional conductivity. Researchers have focused on bridging the gap between the intrinsic conductivity of graphene and the macroscopic performance of composite materials. The anisotropy of 2D nanomaterials indicates that their orientation and distribution are crucial factors in determining the macroscopic performance of thin films and bulk materials. Various technologies developed to control the formation of microstructures include electric and magnetic field methods, hot pressing, centrifugation, and freeze-drying. In this study, we prepared flexible graphene/cellulose composite film materials and used magnetic fields to regulate the orientation and distribution of graphene within cellulose paper. Results show that the grid structure of graphene arranged on the composite material produced interconnected conductive paths and reduced the graphene permeation threshold. By giving the conductive layer a higher dielectric constant, we prevented its breakdown as a conductive film. Electroluminescent devices were constructed using graphene/cellulose flexible composite materials and achieved an effective improvement in luminescence performance. Furthermore, directional luminescence was obtained through a microstructure design. This study provides a feasible path for using 2D nanomaterials in high-performance, flexible wearable devices.

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Self-powered ultra-flexible infrared sensor based on PVA-PEDOT: PSS/Ti3C2Tx composite film

Cited by 4 publications

References 53 publications

Recent progress in piezoelectric thin films as self-powered devices: material and application

Recent progress in piezoelectric thin films as self-powered devices: material and application

Preparation of Gradient Polyurethane and Its Performance for Flexible Sensors

Magnetic Field-Induced Aligned Graphene/Cellulose Conductive Composites for Electroluminescent Devices

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