Laser filament bottom-up growth sintering for multi-planar diffraction-limit printing and its application to ultra-transparent wearable thermo-electronics
- Authors
- Kwon, Seung-Gab; Back, Seunghyun; Park, Jong Eun; Kang, Bongchul
- Issue Date
- 7-Aug-2018
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY C, v.6, no.29, pp 7759 - 7766
- Pages
- 8
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY C
- Volume
- 6
- Number
- 29
- Start Page
- 7759
- End Page
- 7766
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/26638
- DOI
- 10.1039/c8tc01915k
- ISSN
- 2050-7526
2050-7534
- Abstract
- We report a novel cost-effective digital fabrication method for the production of high resolution electrodes of 1 mu m-grade width on multiple planes connected at an angle using an affordable light source. This was achieved by the laser filament growth sintering of nanoseed/organometallic hybrid precursors, which were reformulated from a low-cost, particle-free, ionic organometallic solution. Growth sintering of the hybrid precursor, which creates solid electrodes through the sequential thermo-chemical interactions of nucleation, clustering, thermal growth, and aggregation, improves the conductivity and resolution of the electrodes via bottom-up thermal crystallization and stable chemical transition processes. The laser filament with a Bessel profile, which was modulated from a conventional low-cost laser with a Gaussian profile, localizes the growth sintering interaction within a transversely elongated focusing area close to the diffraction limit, unlike the very narrow focusing area in typical laser optics. As a result, this method enabled the fabrication of an ultra-transparent conductor with a transmittance of more than 97% in the visible spectrum. The electrodes were completely invisible to the naked eye, even when viewed at close range. A transparent micro-heater for humidity-free smart glasses was successfully fabricated to demonstrate the potential of one-step manufacturing of functional wearable devices.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - ETC > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.