Directly Drawn Organic Transistors by Capillary Pen: A New Facile Patterning Method using Capillary Action for Soluble Organic Materials

Kang, Boseok; Min, Honggi; Seo, Unsuk; Lee, Junghwi; Park, Namwoo; Cho, Kilwon; Lee, Hwa Sung

doi:10.1002/adma.201300006

Cited by 46 publications

(45 citation statements)

References 48 publications

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“…[1][2][3][4][5][6][7][8][9][10][11][12] Especially, pen-on-paper type approaches are very interesting since they enable generation of diverse patterned images on solid substrates with drawing fl exibility in inexpensive manner. Efforts aimed at developing this technology have utilized the deposition of various organic, [1][2][3][4] inorganic, [5][6][7][8] and carbon nanotube (CNT)/graphene [9][10][11][12] substrates. Functional materials deposited on solid substrates have been used as conductive electrodes, transistors, and sensors.…”

Section: Introductionmentioning

confidence: 99%

Mechanically Drawable Thermochromic and Mechanothermochromic Polydiacetylene Sensors

Chae

Lee

Kim

2016

Adv Funct Materials

121

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Recently, the development of directly writable techniques for depositing functional materials on solid substrates has received great attention. These pen-on-paper approaches enable generation of diverse patterned images on solid substrates in a fl exible, easy handling, and inexpensive manner. Herein, the development of a directly writable conjugated polymer is described. Mechanically, drawable colorimetric polydiacetylene (PDA)-wax composites are readily fabricated by using a simple mixing-molding method. Images are mechanically drawn on a paper substrate using the PDA-wax composites, display thermochromism, and mechanothermochromism. The thermochromic transition temperature is dependent on the melting point of the wax and, as a result, can be precisely controlled by the type of wax used. Optical microscopic analysis shows that formation of the DA-wax composite involves movement of wax molecules into a single diacetylene (DA) crystal. This process results in growth of the crystal. Importantly, the PDA crystal, obtained after UV light irradiation, undergoes signifi cant shrinkage upon heating because of the release of monomers and the embedded wax molecules from the crystal. The release of these molecules creates void in the PDA supramolecules, allowing the PDA chains to undergo C-C bond rotation and hence the blue-to-red color transition.

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Section: Introductionmentioning

confidence: 99%

Mechanically Drawable Thermochromic and Mechanothermochromic Polydiacetylene Sensors

Chae

Lee

Kim

2016

Adv Funct Materials

121

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“…Printed electronics 12 has attracted great attention over a number of areas such as transistors, [13][14] 23 proposed an atomized spraying method for directly patterning electronic features with room temperature liquid z E-mail: jliu@mail.ipc.ac.cn metal ink on polyvinylchloride (PVC), rubber, typing paper, cotton cloth and even tree leaf substrates. This liquid metal spray printing method suggests big potential for making electronics as freely as possible and is thus extended here as a generalized printed electronics way to directly deposit conductive patterns and functional circuits on the substrates for making smart home appliances.…”

Section: -4mentioning

confidence: 99%

“…For this purpose, we could depict such a typical schematic drawing for the smart home equipped with various printed electronics as Figure 1. To fulfill such coming needs, we are dedicated here to illustrate a generalized printed electronics strategy for the rapid fabrication of electronic circuits or metal patterns with the specific purpose of directly making functional devices or connection wires to compose home appliances.Printed electronics 12 has attracted great attention over a number of areas such as transistors, [13][14] 23 proposed an atomized spraying method for directly patterning electronic features with room temperature liquid z E-mail: jliu@mail.ipc.ac.cn metal ink on polyvinylchloride (PVC), rubber, typing paper, cotton cloth and even tree leaf substrates. This liquid metal spray printing method suggests big potential for making electronics as freely as possible and is thus extended here as a generalized printed electronics way to directly deposit conductive patterns and functional circuits on the substrates for making smart home appliances.…”

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confidence: 99%

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Ink Spraying Based Liquid Metal Printed Electronics for Directly Making Smart Home Appliances

Wang

Liu

2015

ECS J. Solid State Sci. Technol.

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The quickly emerging smart home is heavily involved with various information technologies where electronic devices play perhaps the most important roles. However, there is currently a strong lack of an efficient tool for the direct manufacture of electronics as desired. Meanwhile, although printed electronics has aroused much attention in making printed circuit board, radio frequency identification card, sensor and so on, few existing approaches can fulfill the above needs. Among various technologies, liquid metal spraying method owns rather unique merits in printing electronically conductive patterns on nearly all kinds of substrates, either hard or soft, rough or smooth. For this reason, we are dedicated here to extend such method into a generalized strategy of printing electronics for the direct construction of smart home appliances which would generate profound influence on future daily lives. Through adopting the room temperature liquid metal GaIn 24.5 as the electronic ink and with various designed masks, a group of typical conductive patterns were directly printed on the surfaces of organic glass, marble windowsill, paper, wood plank of cabinet, building wall and so on, which consist of the most popular materials that could serve as circuit substrates in a home. It was shown that this energy-saving printing method brings about big convenience for equipping future smart home residents. Several new conceptual homemade printed patterns or circuits in providing services such as decoration and entertainment were illustrated. Further, the basic electronic structures of the smart home and the generalized concept of adopting any substrate surface as printed circuit board were explained. The liquid metal spray printing suggests a powerful tool for making consumer electronics and constructing future smart home. It also raised important scientific and technical issues worth of pursuing in the coming time. This paper is part of the JSS Focus Issue on Printable Functional Materials for Electronics and Energy Applications.The term smart home refers to a residence equipped with technology which allows network communication between all the devices and appliances in the home with the goal to remote control, monitor and access the services that respond to the needs of the inhabitants. 1-4The research and development on smart home to fulfill varying needs such as health care for the elderly have in fact gathered much interest both in academia and industry. [5][6][7] Diverse sensing systems including image, sound, temperature and light sensors are deployed in a smart home and the generated data stream is transmitted via radio frequency identification (RFID) networks, global positioning system (GPS) and so on.7-11 Clearly, along this trend, we would anticipate that, in such a smart grid and if needed, electronic circuits should be able to stand everywhere such as ceilings, walls, beds, chairs, windows and so on. For this purpose, we could depict such a typical schematic drawing for the smart home equipped with various printe...

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“…Examples include patterning electrodes, soldering electric circuits, fabricating multicolor polymer light-emitting diodes or liquid-crystal display color filters, and depositing UV-curable resin [6][7][8][9][10][11]. Also, the dispensing system has been adapted to biological and tissue engineering applications, such as producing microarrays with biomolecules and cellular structures including scaffolds [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Velocity control of nanoliter droplets using a pneumatic dispensing system

Lee

Choi

Kim

et al. 2014

Micro and Nano Syst Lett

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This paper introduces a pneumatic dispensing system to control the velocity of nanoliter droplets with small variation of volume. The system consists of a flexible membrane integrated with a backflow stopper. This unique dispensing mechanism can control the velocity of droplets according to applied positive pressures regardless of other operating conditions and design parameters. The range of droplet velocities is shifted by the flow resistance at the outlet under the same cross-section area. Our dispensing system can eject droplets of desired volume at a velocity that can be easily controlled by selecting design parameters and operating conditions. This dispensing system will provide a reliable performance within an optimized condition stably to deposit droplets onto accurate locations.

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Directly Drawn Organic Transistors by Capillary Pen: A New Facile Patterning Method using Capillary Action for Soluble Organic Materials

Cited by 46 publications

References 48 publications

Mechanically Drawable Thermochromic and Mechanothermochromic Polydiacetylene Sensors

Mechanically Drawable Thermochromic and Mechanothermochromic Polydiacetylene Sensors

Ink Spraying Based Liquid Metal Printed Electronics for Directly Making Smart Home Appliances

Velocity control of nanoliter droplets using a pneumatic dispensing system

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