scholarly journals Recent Advances in Fiber-Shaped Electronic Devices for Wearable Applications

2021 ◽  
Vol 11 (13) ◽  
pp. 6131
Author(s):  
Minji Kang ◽  
Tae-Wook Kim
Keyword(s):  
Three Dimensional ◽  
Operational Reliability ◽  
Research Area ◽  
Layer By Layer ◽  
Electronic Textiles ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Microelectronic Devices ◽  
Woven Structures ◽  
Made In

Fiber electronics is a key research area for realizing wearable microelectronic devices. Significant progress has been made in recent years in developing the geometry and composition of electronic fibers. In this review, we present that recent progress in the architecture and electrical properties of electronic fibers, including their fabrication methods. We intensively investigate the structural designs of fiber-shaped devices: coaxial, twisted, three-dimensional layer-by-layer, and woven structures. In addition, we introduce remarkable applications of fiber-shaped devices for energy harvesting/storage, sensing, and light-emitting devices. Electronic fibers offer high potential for use in next-generation electronics, such as electronic textiles and smart integrated textile systems, which require excellent deformability and high operational reliability.

Electrochemically Based Light Emitting Devices from Sequentially Adsorbed Multilayers of a Polymeric Ruthenium (II) Complex and Poly(Acrylic Acid)

1997 ◽  
Vol 488 ◽  
Author(s):  
Aiping Wu ◽  
Jin-Kyu Lee ◽  
Michael F. Rubner
Keyword(s):  
Acrylic Acid ◽  
Processing Technique ◽  
Device Performance ◽  
Layer By Layer ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Sequential Adsorption ◽  
Adsorption Processing ◽  
Deposition Conditions ◽  
Poly Acrylic Acid

AbstractWe have investigated a new light emitting material, Ru(bpy)3 2+ polyester for fabricating electrochemically based solid state light emitting devices using the layer-by-layer sequential adsorption processing technique. By controlling the deposition conditions such as the pH of the Ru(bpy)32+ polyester and poly(acrylic acid) (PAA) solutions, we systematically altered the layer thickness and bilayer composition to obtain multilayers that contain different amounts of Ru(bpy)32+ polyester (from 46% to 70%). Differences in the Ru(bpy)32+ polyester composition, in turn, influence the device performance dramatically.

scholarly journals Synthesis and properties of hyperbranched polymers for white polymer light-emitting diodes

RSC Advances ◽  
2019 ◽  
Vol 9 (62) ◽  
pp. 36058-36065 ◽  
Author(s):  
Xuefeng Li ◽  
Haocheng Zhao ◽  
Long Gao ◽  
Xiaoling Xie ◽  
Weixuan Zhang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Three Dimensional ◽  
Hyperbranched Polymers ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Highly Efficient ◽  
Polymer Light Emitting Diodes ◽  
Polymer Light Emitting Devices ◽  
Hyperbranched Structure

A potential hyperbranched structure with fluorene-alt-carbazole branches, a three-dimensional-structured SDF core and red Ir(piq)2acac light adjusting units is synthesized for using in highly efficient white polymer light-emitting devices.

scholarly journals Modular Strategies to Build Cell-Free and Cell-Laden Scaffolds towards Bioengineered Tissues and Organs

2019 ◽  
Vol 8 (11) ◽  
pp. 1816 ◽  
Author(s):  
Aurelio Salerno ◽  
Giuseppe Cesarelli ◽  
Parisa Pedram ◽  
Paolo Antonio Netti
Keyword(s):  
Three Dimensional ◽  
Building Blocks ◽  
Layer By Layer ◽  
Continuous Processes ◽  
Specific Composition ◽  
Organ Regeneration ◽  
Great Progress ◽  
Synthetic Scaffolds ◽  
Modular Scaffolds ◽  
Made In

Engineering three-dimensional (3D) scaffolds for functional tissue and organ regeneration is a major challenge of the tissue engineering (TE) community. Great progress has been made in developing scaffolds to support cells in 3D, and to date, several implantable scaffolds are available for treating damaged and dysfunctional tissues, such as bone, osteochondral, cardiac and nerve. However, recapitulating the complex extracellular matrix (ECM) functions of native tissues is far from being achieved in synthetic scaffolds. Modular TE is an intriguing approach that aims to design and fabricate ECM-mimicking scaffolds by the bottom-up assembly of building blocks with specific composition, morphology and structural properties. This review provides an overview of the main strategies to build synthetic TE scaffolds through bioactive modules assembly and classifies them into two distinct schemes based on microparticles (µPs) or patterned layers. The µPs-based processes section starts describing novel techniques for creating polymeric µPs with desired composition, morphology, size and shape. Later, the discussion focuses on µPs-based scaffolds design principles and processes. In particular, starting from random µPs assembly, we will move to advanced µPs structuring processes, focusing our attention on technological and engineering aspects related to cell-free and cell-laden strategies. The second part of this review article illustrates layer-by-layer modular scaffolds fabrication based on discontinuous, where layers’ fabrication and assembly are split, and continuous processes.

Interlayer Interactions in Self-Assembled Poly(Phenylene Vinylene) Multilayer Heterostructures, Implications for Light-Emitting and Photorectifying Diodes

1994 ◽  
Vol 369 ◽  
Author(s):  
A.C. Fou ◽  
O. Onitsuka ◽  
M. Ferreira ◽  
M.F. Rubner ◽  
B.R. Hsieh
Keyword(s):  
Ultrathin Films ◽  
Self Assembly ◽  
Organic Light Emitting Diodes ◽  
Phenylene Vinylene ◽  
Layer By Layer ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Emission Color ◽  
Multilayer Heterostructures ◽  
Self Assembled

AbstractLayer-by-layer molecular self-assembly has been used to fabricate multilayer heterostructures containing poly(phenylene vinylene) (PPV) and a variety of polyanions. These ultrathin films exhibit widely different photoluminescence intensities and peak positions (emission color) depending on the polyanion used. The characteristics of light-emitting devices based on such films are described. This represents the first demonstration of working organic light-emitting diodes, the active layer of which consists of ultrathin, self-assembled films of between 130 - 500 Å

Hyperbranched fluorene-alt-carbazole copolymers with spiro[3.3]heptane-2,6-dispirofluorene as the core and their application in white polymer light-emitting devices

RSC Advances ◽  
2015 ◽  
Vol 5 (61) ◽  
pp. 49662-49670 ◽  
Author(s):  
Yuling Wu ◽  
Jie Li ◽  
Wenqing Liang ◽  
Junli Yang ◽  
Jing Sun ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
The Core ◽  
Polymer Light Emitting Devices ◽  
Hyperbranched Structure

A potential hyperbranched structure with 2,7-fluorene-alt-3,6-carbazole and 4,7-dithienyl-2,1,3-benzothiadiazole branches, and a three-dimensional-structured spiro[3.3]heptane-2,6-dispirofluorene core is synthesized for efficient and stable WPLEDs.

scholarly journals Challenges of Coating Textiles With Graphene

2021 ◽  
Author(s):  
Ana I. S. Neves ◽  
Zakaria Saadi
Keyword(s):  
Electronic Devices ◽  
Electronic Textiles ◽  
Seamless Integration ◽  
Light Emitting ◽  
Plastic Films ◽  
Light Emitting Devices ◽  
Different Types ◽  
Self Powered ◽  
The University ◽  
Triboelectric Energy Harvesting

Electronic textiles (e-textiles) hold the key for seamless integration of electronic devices for wearable applications. Compared to other flexible substrates, such as plastic films, textiles are, however, challenging substrates to work with due to their surface roughness. Researchers at the University of Exeter demonstrated that using different coating techniques as well as different types of graphene coatings is the key to overcome this challenge. The results of coating selected monofilament textile fibres and woven textiles with graphene are discussed here. These conductive textiles are fundamental components e-textiles, and some applications will be reviewed in this paper. That includes light-emitting devices, touch and position sensors, as well as temperature and humidity sensors. The possibility of triboelectric energy harvesting is also discussed as the next step to realise self-powered e-textiles.

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