BROWSE

Related Scientist

Researcher

첨단연성물질 연구단
첨단연성물질 연구단
more info

Near-Field Electrospinning for Three-Dimensional Stacked Nanoarchitectures with High Aspect Ratios

Cited 0 time in webofscience Cited 0 time in scopus
23 Viewed 7 Downloaded
Title
Near-Field Electrospinning for Three-Dimensional Stacked Nanoarchitectures with High Aspect Ratios
Author(s)
Yang-Seok Park; Junyoung Kim; Jung Min Oh; Seungyoung Park; Seungse Cho; Hyunhyub Ko; Yoon-Kyoung Cho
Publication Date
2020-01
Journal
NANO LETTERS, v.20, no.1, pp.441 - 448
Publisher
AMER CHEMICAL SOC
Abstract
© 2019 American Chemical Society.Near-field electrospinning (NFES) was developed to overcome the intrinsic instability of traditional electrospinning processes and to facilitate the controllable deposition of nanofibers under a reduced electric field. This technique offers a straightforward and versatile method for the precision patterning of two-dimensional (2D) nanofibers. However, three-dimensional (3D) stacked structures built by NFES have been limited to either micron-scale sizes or special shapes. Herein, we report on a direct-write 3D NFES technique to construct self-aligned, template-free, 3D stacked nanoarchitectures by simply adding salt to the polymer solution. Numerical simulations suggested that the electric field could be tuned to achieve self-aligned nanofibers by adjusting the conductivity of the polymer solution. This was confirmed experimentally by using poly(ethylene oxide) (PEO) solutions containing 0.1-1.0 wt% NaCl. Using 0.1 wt% NaCl, nanowalls with a maximum of 80 layers could be built with a width of 92 ± 3 nm, height of 6.6 ± 0.1 μm, and aspect ratio (height/width) of 72. We demonstrate the 3D printing of nanoskyscrapers with various designs, such as curved "nanowall arrays", nano "jungle gyms," and "nanobridges". Further, we present an application of the 3D stacked nanofiber arrays by preparing transparent and flexible polydimethylsiloxane films embedded with Ag-sputtered nanowalls as 3D nanoelectrodes. The conductivity of the nanoelectrodes can be precisely tuned by adjusting the number of 3D printed layers, without sacrificing transmittance (98.5%). The current NFES approach provides a simple, reliable route to build 3D stacked nanoarchitectures with high-aspect ratios for potential application in smart materials, energy devices, and biomedical applications
URI
https://pr.ibs.re.kr/handle/8788114/7049
ISSN
1530-6984
Appears in Collections:
Center for Soft and Living Matter(첨단연성물질 연구단) > Journal Papers (저널논문)
Files in This Item:
2020_Nano Lett_Yoon_Near-Field Electrospinning for Three-Dimensional Stacked Nanoarchitectures with High Aspect Ratios.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse