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Your search keyword '"Choi, Suk-Ho"' showing total 6 results
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6 results on '"Choi, Suk-Ho"'

2. Graphene pā€“n Vertical Tunneling Diodes

Author

Kim, Sung, primary, Shin, Dong Hee, additional, Kim, Chang Oh, additional, Kang, Soo Seok, additional, Kim, Jong Min, additional, Jang, Chan Wook, additional, Joo, Soong Sin, additional, Lee, Jae Sung, additional, Kim, Ju Hwan, additional, Choi, Suk-Ho, additional, and Hwang, Euyheon, additional

Published
2013
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3. Anomalous Behaviors of Visible Luminescence from Graphene Quantum Dots: Interplay between Size and Shape

Author

Kim, Sung, primary, Hwang, Sung Won, additional, Kim, Min-Kook, additional, Shin, Dong Yeol, additional, Shin, Dong Hee, additional, Kim, Chang Oh, additional, Yang, Seung Bum, additional, Park, Jae Hee, additional, Hwang, Euyheon, additional, Choi, Suk-Ho, additional, Ko, Geunwoo, additional, Sim, Sunghyun, additional, Sone, Cheolsoo, additional, Choi, Hyoung Joon, additional, Bae, Sukang, additional, and Hong, Byung Hee, additional

Published
2012
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4. Formation of Triboelectric Series viaAtomic-Level Surface Functionalization for Triboelectric Energy Harvesting

Author

Shin, Sung-Ho, Bae, Young Eun, Moon, Hyun Kyung, Kim, Jungkil, Choi, Suk-Ho, Kim, Yongho, Yoon, Hyo Jae, Lee, Min Hyung, and Nah, Junghyo

Abstract

Triboelectric charging involves frictional contact of two different materials, and their contact electrification usually relies on polarity difference in the triboelectric series. This limits the choices of materials for triboelectric contact pairs, hindering research and development of energy harvest devices utilizing triboelectric effect. A progressive approach to resolve this issue involves modification of chemical structures of materials for effectively engineering their triboelectric properties. Here, we describe a facile method to change triboelectric property of a polymeric surface viaatomic-level chemical functionalizations using a series of halogens and amines, which allows a wide spectrum of triboelectric series over single material. Using this method, tunable triboelectric output power density is demonstrated in triboelectric generators. Furthermore, molecular-scale calculation using density functional theory unveils that electrons transferred through electrification are occupying the PET group rather than the surface functional group. The work introduced here would open the ability to tune triboelectric property of materials by chemical modification of surface and facilitate the development of energy harvesting devices and sensors exploiting triboelectric effect.

Published
2017
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