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Park, Jeong Young
나노물질 및 화학반응 연구단
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Hydrogenation of diamond nanowire surfaces for effective electrostatic charge storage

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Title
Hydrogenation of diamond nanowire surfaces for effective electrostatic charge storage
Author(s)
Panda, Kalpataru; Kim, Jae-Eun; Sankaran, Kamatchi Jothiramalingam; Lin, I-Nan; Haenen, Ken; Duesberg, Georg S.; Jeong Young Park
Publication Date
2021-04
Journal
Nanoscale, v.13, no.15, pp.7308 - 7321
Publisher
Royal Society of Chemistry
Abstract
© The Royal Society of Chemistry.We report a novel versatile method for writing charged areas on diamond nanowire (DNW) surfaces using an atomic force microscopy (AFM) tip. Transmission electron microscopy (TEM) investigations revealed the existence of abundant plate-like diamond aggregates, which were encased in layers of graphite, forming nano-sized diamond-graphite composites (DGCs) on DNW surfaces. These DGCs are the main feature, acting as charge-trapping centers and storing electrostatic charge. A hydrogenation process has been observed effectively enhancing the charge-trapping properties of these DNW materials. The effective charge trapping properties with hydrogenation are ascribed to the disintegration of the DGCs into smaller pieces, with an overall increase in the metallic nanographitic phase fractions in a dielectric diamond matrix. Moreover, the written charge on the surface can be easily modified, re-written, or completely erased, enabling application in diamond-based re-writable electronic devices. However, excessive hydrogenation degrades the charge-trapping properties, which is attributed to the etching of the DGCs from the surface. This study demonstrates the potential importance of a simple hydrogenation process in effective electrostatic charge trapping and storage for diamond related nanocarbon materials and the role of DGCs to further enhance it. This journal is
URI
https://pr.ibs.re.kr/handle/8788114/9697
DOI
10.1039/d1nr00189b
ISSN
2040-3364
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > 1. Journal Papers (저널논문)
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