Versatile Metal Nanowiring Platform for Large‐Scale Nano‐ and Opto‐Electronic Devices

Lee, Yeongjun; Min, Sung‐Yong; Kim, Tae-Sik; Jeong, Seong Mok; Won, Ju Yeon; Kim, Hobeom; Xu, Wentao; Jeong, Jae Kyeong; Lee, Tae‐Woo

doi:10.1002/adma.201602855

Cited by 75 publications

(91 citation statements)

References 60 publications

(56 reference statements)

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“…The diameter of single CuNW was around 710 nm and it had a resistivity of 14.1 µΩ cm, which is slightly higher than that of bulk Cu (1.68 µΩ cm). By replacing the composite of PVP/CTA with that of PVP/silver trifluoroacetate/CTA, silver nanowires (AgNWs) with an average diameter of about 695 nm and low resistivity of 5.7 µΩ cm had also formed after one calcination step under ambient (350 °C, 20 min) . It should be noted that the addition of a small amount of CTA is quite essential to maintain the continuous structure of AgNW, because the formed CuO in the composite nanowires that has a high melting temperature ( T m ≈ 1326 °C) hinders the Ag agglomerated in the high temperature .…”

Section: Applications Via Ehd Direct‐writingmentioning

confidence: 99%

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Large‐Scale Direct‐Writing of Aligned Nanofibers for Flexible Electronics

Ding

Duan

et al. 2018

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135

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Nanofibers/nanowires usually exhibit exceptionally low flexural rigidities and remarkable tolerance against mechanical bending, showing superior advantages in flexible electronics applications. Electrospinning is regarded as a powerful process for this 1D nanostructure; however, it can only be able to produce chaotic fibers that are incompatible with the well-patterned microstructures in flexible electronics. Electro-hydrodynamic (EHD) direct-writing technology enables large-scale deposition of highly aligned nanofibers in an additive, noncontact, real-time adjustment, and individual control manner on rigid or flexible, planar or curved substrates, making it rather attractive in the fabrication of flexible electronics. In this Review, the ground-breaking research progress in the field of EHD direct-writing technology is summarized, including a brief chronology of EHD direct-writing techniques, basic principles and alignment strategies, and applications in flexible electronics. Finally, future prospects are suggested to advance flexible electronics based on orderly arranged EHD direct-written fibers. This technology overcomes the limitations of the resolution of fabrication and viscosity of ink of conventional inkjet printing, and represents major advances in manufacturing of flexible electronics.

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Section: Applications Via Ehd Direct‐writingmentioning

confidence: 99%

Section: Applications Via Ehd Direct‐writingmentioning

confidence: 99%

Large‐Scale Direct‐Writing of Aligned Nanofibers for Flexible Electronics

Ding

Duan

et al. 2018

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135

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“…[1][2][3][4][5][6][7] Ultrafine metal fibers are one of the key components used to prepare flexible electronics devices fulfilling the above characteristics, [8][9][10][11] and they have been extensively studied in a variety of fields, such as smart windows, 12 touch screen, [13][14][15] nanocircuits, [16][17][18] artificial electronic skin, 19-24 solar cells, 25 and interactive electronics. 26 In the context of these applications, how to use the ultrafine metal fibers on flexible substrate is a pivotal problem.…”

Section: Introductionmentioning

confidence: 99%

Room-temperature processing of silver submicron fiber mesh for flexible electronics

et al. 2018

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Ultrathin, patterned, conducting metallic fibers have been extensively studied as building blocks in flexible electronics. However, their scalable processing and attainment of patterns at room temperature is challenging. In this paper, we report on the patterning of ultra-long silver submicron fibers as woven mesh through the process of continuous draw spinning in the presence of ultraviolet (UV) treatment. The silver fibers can be directly intertwined on flexible substrates, such as polyethylene terephthalate (PET) and polyimide (PI). The as obtained silver submicron fiber mesh present excellent photoelectric properties (T = 90%, R = 9 Ω sq −1) and outstanding flexibility and can be easily transferred on other surfaces. To demonstrate its application, flexible electrochromic smart window and infrared stealth film have been prepared.

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“…By shortening the nozzle-to-collector distance, near-field electrospinning (NFES) can avoid the whipping instability and realize the direct-writing of straight micro/nano fibers [18]. This controllable manner has greatly expanded the applications of electrospinning, i.e., transparent electrodes [19], piezoelectric devices [20], non-volatile memories [21] and field-effect transistors [22]. However, the straight fiber based structures enable devices to be bendable but not stretchable.…”

Section: Introductionmentioning

confidence: 99%

Helix Electrohydrodynamic Printing of Highly Aligned Serpentine Micro/Nanofibers

Duan

Ding

et al. 2017

Polymers

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Micro/nano serpentine structures have widespread applications in flexible/stretchable electronics; however, challenges still exist for low-cost, high-efficiency and controllable manufacturing. Helix electrohydrodynamic printing (HE-printing) has been proposed here to realize controllable direct-writing of large area, highly aligned serpentine micro/nanofibers by introducing the rope coiling effect into printing process. By manipulating the flying trajectory and solidification degree of the micro/nano jet, the solidified micro/nanofiber flying in a stabilized helical manner and versatile serpentine structures deposited on a moving collector have been achieved. Systematic experiments and theoretical analysis were conducted to study the transformation behavior and the size changing rules for various deposited microstructures, and highly aligned serpentine microfibers were directly written by controlling the applied voltage, nozzle-to-collector distance and collector velocity. Furthermore, a hyper-stretchable piezoelectric device that can detect stretching, bending and pressure has been successfully fabricated using the printed serpentine micro/nanofibers, demonstrating the potential of HE-printing in stretchable electronics manufacturing.

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Versatile Metal Nanowiring Platform for Large‐Scale Nano‐ and Opto‐Electronic Devices

Cited by 75 publications

References 60 publications

Large‐Scale Direct‐Writing of Aligned Nanofibers for Flexible Electronics

Large‐Scale Direct‐Writing of Aligned Nanofibers for Flexible Electronics

Room-temperature processing of silver submicron fiber mesh for flexible electronics

Helix Electrohydrodynamic Printing of Highly Aligned Serpentine Micro/Nanofibers

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