Double-network hydrogel with adjustable surface morphology and multifunctional integration for flexible strain sensors

Soft Matter ◽  
2021 ◽  
Author(s):  
Yang Yu ◽  
Fengjin Xie ◽  
Xinpei Gao ◽  
Liqiang Zheng
Keyword(s):  
Surface Morphology ◽  
Flexible Electronics ◽  
High Performance ◽  
Strain Sensors ◽  
Next Generation ◽  
Double Network ◽  
Conductive Hydrogels

The next generation of high-performance flexible electronics has put forward new demands to the development of ionic conductive hydrogels. In recent years, many efforts have been made toward developing double-network...

scholarly journals Hierarchically Structured Stretchable Conductive Hydrogels for High-Performance Wearable Strain Sensors and Supercapacitors

Matter ◽  
2020 ◽  
Vol 3 (4) ◽  
pp. 1196-1210 ◽  
Author(s):  
Yusen Zhao ◽  
Bozhen Zhang ◽  
Bowen Yao ◽  
Yu Qiu ◽  
Zihang Peng ◽  
...  
Keyword(s):  
High Performance ◽  
Strain Sensors ◽  
Conductive Hydrogels

Next Generation of Thin Film Transistors Based on Zinc Oxide

2004 ◽  
Vol 811 ◽  
Author(s):  
E. Fortunato ◽  
P. Barquinha ◽  
A. Pimentel ◽  
A. Gonçalves ◽  
L. Pereira ◽  
...  
Keyword(s):  
Thin Film ◽  
Flexible Electronics ◽  
Field Effect ◽  
High Performance ◽  
Room Temperature ◽  
Low Cost ◽  
Thin Film Transistor ◽  
Optoelectronic Device ◽  
Field Effect Mobility ◽  
Next Generation

ABSTRACTWe report high performance ZnO thin film transistor (ZnO-TFT) fabricated by rf magnetron sputtering at room temperature with a bottom gate configuration. The ZnO-TFT operates in the enhancement mode with a threshold voltage of 19 V, a field effect mobility of 28 cm2/Vs, a gate voltage swing of 1.39 V/decade and an on/off ratio of 3×105. The ZnO-TFT present an average optical transmission (including the glass substrate) of 80 % in the visible part of the spectrum. The combination of transparency, high field-effect mobility and room temperature processing makes the ZnO-TFT a very promising low cost optoelectronic device for the next generation of invisible and flexible electronics.

scholarly journals Towards conductive hydrogels in e-skins: a review on rational design and recent developments

RSC Advances ◽  
2021 ◽  
Vol 11 (54) ◽  
pp. 33835-33848
Author(s):  
Chujia Li
Keyword(s):  
Flexible Electronics ◽  
High Performance ◽  
Rational Design ◽  
Recent Progress ◽  
Recent Developments ◽  
Conductive Hydrogels

This review constructed a framework of methodologies to summarize the recent progress of high-performance conductive hydrogels for flexible electronics and further provide novel insights about rational design of the advanced hydrogels.

First Principle Analysis of the Effect of Strain on Electronic Transport Properties of Dumbbell-Shape Graphene Nanoribbons

2019 ◽  
Author(s):  
Takuya Kudo ◽  
Qinqiang Zhang ◽  
Ken Suzuki ◽  
Hideo Miura
Keyword(s):  
High Performance ◽  
Density Functional ◽  
Graphene Nanoribbons ◽  
Strain Sensor ◽  
Strain Sensors ◽  
First Principle ◽  
Next Generation ◽  
Electronic Band ◽  
Nano Scale ◽  
Highly Sensitive

Abstract Graphene nanoribbons (GNRs), nano scale strips of graphene which consists of carbon hexagonal unit cell, are expected as next generation materials for high performance devices because of its unique super-conductive properties. When the strip width of graphene is cut into nano-scale, thinner than 70 nm, however, band gap starts to appear in the thin GNRs at room temperature, and thus, they show semiconductive properties. Previous studies have shown that the bad gap of GNR is highly sensitive to strain, which indicates that GNRs are candidates for a detective element of highly sensitive strain sensors. In practical applications, ohmic contact between a metallic electrode and a semiconductive detective element is indispensable for these sensors. By considering the effect of the width of GNRs on their electronic properties, dumbbell-shape GNRs (DS-GNRs) structures have been proposed for the basic structure of the GNR-base strain sensors, which consisted of GNRs with two different widths. Center portion of the DS-GNR is narrower than 70 nm and GNRs wider than 70 nm are attached at the both ends of the center GNR as electrode. Both semiconductive and metallic portions of a strain sensor consist of only carbon atoms using this DS-GNR structure. Even though this structure consists of one material, the effect of the interaction between two metallic and semiconductive GNRs must be clarified to realize the strain sensor with high performance. In this study, first principle calculations were applied to the analysis of the electronic band structure of the DS-GNR based on density functional theory (DFT). It was found that the local distribution of energy states of electrons and charges varied drastically as strong functions of the length of GNRs and the magnitude of the applied strain. The current through the DS-GNR structure was converged as the length of the semiconductive portion increased. In the models with enough length, transport property of the DS-GNR showed high sensitivity to strain. Thus, the effective resistivity of the structure varied from metallic to semiconductive, and therefore, this structure is appropriate for the next-generation highly sensitive and deformable strain sensors.

scholarly journals Preparation and Property Research of Strain Sensor Based on PDMS and Silver Nanomaterials

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Lihua Liu ◽  
Qiang Zhang ◽  
Dong Zhao ◽  
Aoqun Jian ◽  
Jianlong Ji ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
High Performance ◽  
Strain Sensor ◽  
Strain Sensors ◽  
Gauge Factor ◽  
Thermal Method ◽  
Simple Method ◽  
Current Trends ◽  
Silver Nanomaterials ◽  
Highly Sensitive

Based on the advantages and broad applications of stretchable strain sensors, this study reports a simple method to fabricate a highly sensitive strain sensor with Ag nanomaterials-polydimethylsiloxane (AgNMs-PDMS) to create a synergic conductive network and a sandwich-structure. Three Ag nanomaterial samples were synthesized by controlling the concentrations of the FeCl3 solution and reaction time via the heat polyols thermal method. The AgNMs network’s elastomer nanocomposite-based strain sensors show strong piezoresistivity with a high gauge factor of 547.8 and stretchability from 0.81% to 7.26%. The application of our high-performance strain sensors was demonstrated by the inducting finger of the motion detection. These highly sensitive sensors conform to the current trends of flexible electronics and have prospects for broad application.

scholarly journals Recent Advances in Natural Functional Biopolymers and Their Applications of Electronic Skins and Flexible Strain Sensors

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 813
Author(s):  
Ziying Wang ◽  
Zongtao Ma ◽  
Jingyao Sun ◽  
Yuhua Yan ◽  
Miaomiao Bu ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
High Performance ◽  
Low Cost ◽  
Electronic Waste ◽  
Electronic Devices ◽  
Strain Sensors ◽  
Functional Design ◽  
Nonrenewable Resources ◽  
Design Strategies ◽  
Flexible Sensors

In order to replace nonrenewable resources and decrease electronic waste disposal, there is a rapidly rising demand for the utilization of reproducible and degradable biopolymers in flexible electronics. Natural biopolymers have many remarkable characteristics, including light weight, excellent mechanical properties, biocompatibility, non-toxicity, low cost, etc. Thanks to these superior merits, natural functional biopolymers can be designed and optimized for the development of high-performance flexible electronic devices. Herein, we provide an insightful overview of the unique structures, properties and applications of biopolymers for electronic skins (e-skins) and flexible strain sensors. The relationships between properties and sensing performances of biopolymers-based sensors are also investigated. The functional design strategies and fabrication technologies for biopolymers-based flexible sensors are proposed. Furthermore, the research progresses of biopolymers-based sensors with various functions are described in detail. Finally, we provide some useful viewpoints and future prospects of developing biopolymers-based flexible sensors.

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