Flexible Electronics: Fast Plasmonic Laser Nanowelding for a Cu-Nanowire Percolation Network for Flexible Transparent Conductors and Stretchable Electronics (Adv. Mater. 33/2014)

2014 ◽  
Vol 26 (33) ◽  
pp. 5888-5888 ◽  
Author(s):  
Seungyong Han ◽  
Sukjoon Hong ◽  
Jooyeun Ham ◽  
Junyeob Yeo ◽  
Jinhwan Lee ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
Transparent Conductors ◽  
Stretchable Electronics ◽  
Percolation Network

Fast Plasmonic Laser Nanowelding for a Cu-Nanowire Percolation Network for Flexible Transparent Conductors and Stretchable Electronics

2014 ◽  
Vol 26 (33) ◽  
pp. 5808-5814 ◽  
Author(s):  
Seungyong Han ◽  
Sukjoon Hong ◽  
Jooyeun Ham ◽  
Junyeob Yeo ◽  
Jinhwan Lee ◽  
...  
Keyword(s):  
Transparent Conductors ◽  
Stretchable Electronics ◽  
Percolation Network

Stretchable Systems

2021 ◽  
Author(s):  
Yogeenth Kumaresan ◽  
Nivasan Yogeswaran ◽  
Luigi G. Occhipinti ◽  
Ravinder Dahiya
Keyword(s):  
Flexible Electronics ◽  
High Performance ◽  
Electrical Response ◽  
Inorganic Compounds ◽  
Stretchable Electronics ◽  
Material Research ◽  
Active Materials ◽  
Challenges And Opportunities ◽  
Integration Techniques ◽  
Strain Invariant

Stretchable electronics is one of the transformative pillars of future flexible electronics. As a result, the research on new passive and active materials, novel designs, and engineering approaches has attracted significant interest. Recent studies have highlighted the importance of new approaches that enable the integration of high-performance materials, including, organic and inorganic compounds, carbon-based and layered materials, and composites to serve as conductors, semiconductors or insulators, with the ability to accommodate electronics on stretchable substrates. This Element presents a discussion about the strategies that have been developed for obtaining stretchable systems, with a focus on various stretchable geometries to achieve strain invariant electrical response, and summarises the recent advances in terms of material research, various integration techniques of high-performance electronics. In addition, some of the applications, challenges and opportunities associated with the development of stretchable electronics are discussed.

Mechanical characteristics of stretchable electronics based on a mogul-patterned structure

2016 ◽  
Vol 09 (06) ◽  
pp. 1642012 ◽  
Author(s):  
Yeon-Ho Lee ◽  
Youn-Jea Kim
Keyword(s):  
Flexible Electronics ◽  
Mechanical Characteristics ◽  
Mechanical Deformation ◽  
Von Mises Stress ◽  
Structural Safety ◽  
Stretchable Electronics ◽  
Film Material ◽  
Von Mises ◽  
Nanostructured Patterns ◽  
Stress And Strain Distribution

Recent progress in unconventional forms of foldable and stretchable electronics has enabled development of novel electronics. Especially, stretchable electronics have attracted much interest for applications that require reliable operation under mechanical deformation. Stretchable electrodes can be bent, stretched and compressed while maintaining good performance and structural safety. To realize flexible electronics, stretchability of devices, which requires a deeper understanding of nanoscale materials and mechanics, is needed. In this study, the mechanical characteristics of electrodes based on a mogul-pattern, which retain their electrical conductivity under mechanical deformation, were evaluated. Nanostructured patterns and thin film material were considered for stretched and bent models. The von Mises stress and strain distribution were analyzed and depicted graphically.

scholarly journals Stretchable, Transparent, Ionic Conductors

Science ◽  
2013 ◽  
Vol 341 (6149) ◽  
pp. 984-987 ◽  
Author(s):  
Christoph Keplinger ◽  
Jeong-Yun Sun ◽  
Choon Chiang Foo ◽  
Philipp Rothemund ◽  
George M. Whitesides ◽  
...  
Keyword(s):  
Electrochemical Reaction ◽  
Transparent Conductors ◽  
Large Strains ◽  
Stretchable Electronics ◽  
Ionic Conductors ◽  
Sensors And Actuators ◽  
Electromechanical Transduction ◽  
Highly Stretchable ◽  
Electronic Conductors ◽  
Lower Sheet Resistance

Existing stretchable, transparent conductors are mostly electronic conductors. They limit the performance of interconnects, sensors, and actuators as components of stretchable electronics and soft machines. We describe a class of devices enabled by ionic conductors that are highly stretchable, fully transparent to light of all colors, and capable of operation at frequencies beyond 10 kilohertz and voltages above 10 kilovolts. We demonstrate a transparent actuator that can generate large strains and a transparent loudspeaker that produces sound over the entire audible range. The electromechanical transduction is achieved without electrochemical reaction. The ionic conductors have higher resistivity than many electronic conductors; however, when large stretchability and high transmittance are required, the ionic conductors have lower sheet resistance than all existing electronic conductors.

scholarly journals Fatigue-free, superstretchable, transparent, and biocompatible metal electrodes

2015 ◽  
Vol 112 (40) ◽  
pp. 12332-12337 ◽  
Author(s):  
Chuan Fei Guo ◽  
Qihan Liu ◽  
Guohui Wang ◽  
Yecheng Wang ◽  
Zhengzheng Shi ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
Indium Tin Oxide ◽  
Large Strain ◽  
Transparent Conductors ◽  
Practical Applications ◽  
Highly Stretchable ◽  
Implantable Electronics ◽  
Electronic Conductors ◽  
Strained Materials ◽  
Original Configuration

Next-generation flexible electronics require highly stretchable and transparent electrodes. Few electronic conductors are both transparent and stretchable, and even fewer can be cyclically stretched to a large strain without causing fatigue. Fatigue, which is often an issue of strained materials causing failure at low strain levels of cyclic loading, is detrimental to materials under repeated loads in practical applications. Here we show that optimizing topology and/or tuning adhesion of metal nanomeshes can significantly improve stretchability and eliminate strain fatigue. The ligaments in an Au nanomesh on a slippery substrate can locally shift to relax stress upon stretching and return to the original configuration when stress is removed. The Au nanomesh keeps a low sheet resistance and high transparency, comparable to those of strain-free indium tin oxide films, when the nanomesh is stretched to a strain of 300%, or shows no fatigue after 50,000 stretches to a strain up to 150%. Moreover, the Au nanomesh is biocompatible and penetrable to biomacromolecules in fluid. The superstretchable transparent conductors are highly desirable for stretchable photoelectronics, electronic skins, and implantable electronics.

scholarly journals Copercolating Networks: An Approach for Realizing High-Performance Transparent Conductors using Multicomponent Nanostructured Networks

Nanophotonics ◽  
2016 ◽  
Vol 5 (1) ◽  
pp. 180-195 ◽  
Author(s):  
Suprem R. Das ◽  
Sajia Sadeque ◽  
Changwook Jeong ◽  
Ruiyi Chen ◽  
Muhammad A. Alam ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
Indium Tin Oxide ◽  
High Performance ◽  
Silver Nanowires ◽  
Optical Transmittance ◽  
Single Component ◽  
Transparent Conductors ◽  
Hybrid Networks ◽  
Gold Nanowires ◽  
Metallic Nanowire Networks

Abstract Although transparent conductive oxides such as indium tin oxide (ITO) are widely employed as transparent conducting electrodes (TCEs) for applications such as touch screens and displays, new nanostructured TCEs are of interest for future applications, including emerging transparent and flexible electronics. A number of twodimensional networks of nanostructured elements have been reported, including metallic nanowire networks consisting of silver nanowires, metallic carbon nanotubes (m-CNTs), copper nanowires or gold nanowires, and metallic mesh structures. In these single-component systems, it has generally been difficult to achieve sheet resistances that are comparable to ITO at a given broadband optical transparency. A relatively new third category of TCEs consisting of networks of 1D-1D and 1D-2D nanocomposites (such as silver nanowires and CNTs, silver nanowires and polycrystalline graphene, silver nanowires and reduced graphene oxide) have demonstrated TCE performance comparable to, or better than, ITO. In such hybrid networks, copercolation between the two components can lead to relatively low sheet resistances at nanowire densities corresponding to high optical transmittance. This review provides an overview of reported hybrid networks, including a comparison of the performance regimes achievable with those of ITO and single-component nanostructured networks. The performance is compared to that expected from bulk thin films and analyzed in terms of the copercolation model. In addition, performance characteristics relevant for flexible and transparent applications are discussed. The new TCEs are promising, but significant work must be done to ensure earth abundance, stability, and reliability so that they can eventually replace traditional ITO-based transparent conductors.

scholarly journals Solidified Liquid Metal with Regulated Plasticity for Channel-Free Construction of 3D Structured Flexible Electronics

2021 ◽  
Author(s):  
Guoqiang Li ◽  
Mingyang Zhang ◽  
Sanhu Liu ◽  
Man Yuan ◽  
Junjie Wu ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
Liquid Metals ◽  
Circuit Board ◽  
Great Promise ◽  
Stretchable Electronics ◽  
Integrated Electronics ◽  
Free Construction ◽  
Led Array ◽  
Novel Strategy ◽  
Solid Liquid

Abstract Gallium alloy based liquid metals (LMs) have shown great promise for soft and stretchable electronics in virtue of intrinsic fluidity and metallic conductivity. However, it has been a challenge by using LM to construct 3D structured circuits which are crucial for building flexible electronics with high integration. Hereby, taking advantage of the solid-liquid phase transition and plastic deformation of a Ga-10In LM alloy, we propose a novel strategy to fabricate LM based flexible electronic devices, in particular comprised of 3D circuits, without the need to pre-fabricate microchannels. We demonstrate applications including 3D interconnect arches for the integration of a multi-channel LED array, a 3D structured wearable sensor and a multilayer flexible circuit board for monitoring of finger movement. The current work provides a facile strategy for constructing LM based flexible electronics, which is of particular interest for building highly integrated electronics of hierarchical structure involving complicated 3D circuits.

Self-sintering liquid metal ink with laponite for flexible electronics

2021 ◽  
Author(s):  
Pengcheng Wu ◽  
Lu-yu Zhou ◽  
Shang Lv ◽  
JianZhong Fu ◽  
Yong He
Keyword(s):  
Liquid Metal ◽  
Flexible Electronics ◽  
Soft Robotics ◽  
Stretchable Electronics ◽  
Self Powered ◽  
Widespread Interest ◽  
Liquid Metal Ink ◽  
Flexible And Stretchable Electronics

Liquid-metal (LM)-based flexible and stretchable electronics have attracted widespread interest in soft robotics, self-powered devices and electronic skins. Although nanometerization can facilitate deposition and patterning of LMs onto substrates, subsequent...

scholarly journals Silver Nanowires from Sonication-Induced Scission

Micromachines ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 29 ◽  
Author(s):  
Yuehui Wang ◽  
Xing Yang ◽  
Dexi Du
Keyword(s):  
Flexible Electronics ◽  
Solvothermal Method ◽  
Silver Nanowires ◽  
Electronics Industry ◽  
Transparent Conductors ◽  
Ultrasonic Power ◽  
Optical And Electrical Properties ◽  
Ultrasonic Time ◽  
Mean Diameter ◽  
The Relationship

Silver nanowires (AgNWs) have great potential to be used in the flexible electronics industry for their applications in flexible, transparent conductors due to high conductivity and light reflectivity. Those applications always involve size which strongly affects the optical and electrical properties of AgNWs. AgNWs of mean diameter 70 nm and mean length 12.5 μm were achieved by the polyol solvothermal method. Sonication-induced scission was used to obtain the small size AgNWs. The relationship between the size of AgNWs and the ultrasonic time, ultrasonic power, and concentration of AgNWs were studied. The results show that the length of AgNWs gradually reduces with the increase of the ultrasonic time and ultrasonic power, and with the decrease of concentration of AgNWs. Meanwhile, there is an existence of a limiting length below which fragmentation of AgNWs no longer occurs. Further, the mechanics of sonication-induced scission for the fragmentation of AgNWs was discussed.

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