Zhengqing Zhang
Pusan National University
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Publication
Featured researches published by Zhengqing Zhang.
Langmuir | 2016
Zhengqing Zhang; Mohammad A. Matin; Man Yeong Ha; Joonkyung Jang
This paper reports a large scale molecular dynamics (MD) simulation study of the wettability of a gold surface engraved with (hemi)spherical cavities. By increasing the depth of cavities, the contact angle (CA) of a water droplet on the surface was varied from a hydrophilic (69°) to a hydrophobic value (>109°). The nonmonotonic behavior of the CA vs the depth of the cavities was consistent with the Cassie-Baxter theory, as found in the experiment by Abdelsalam et al. (Abdelsalam, M. E.; Bartlett, P. N.; Kelf, T.; Baumberg, J. Wetting of Regularly Structured Gold Surfaces. Langmuir 2005, 21, 1753-1757). Depending on the depth of cavities, however, the droplet existed not only in the Cassie-Baxter state, but also in the Wenzel or an intermediate state, where the cavities were penetrated partially by the droplet.
Physical Chemistry Chemical Physics | 2014
Zhengqing Zhang; Hyojeong Kim; Man Yeong Ha; Joonkyung Jang
Journal of Physical Chemistry C | 2014
Hyojeong Kim; Joyanta K. Saha; Zhengqing Zhang; Jihye Jang; Mohammad A. Matin; Joonkyung Jang
Nanoscale | 2016
Zhengqing Zhang; Hyojeong Kim; Jaegeun Noh; Yoonho Ahn; Jong Yeog Son; Joonkyung Jang
Journal of Physical Chemistry C | 2014
Hyojeong Kim; Su In Lee; Mohammad A. Matin; Zhengqing Zhang; Jihye Jang; Man Yeong Ha; Joonkyung Jang
Journal of Physical Chemistry C | 2016
Zhengqing Zhang; Yoonho Ahn; Jong Yeog Son; Joonkyung Jang
Nanoscale | 2017
Zhengqing Zhang; Man Yeong Ha; Joonkyung Jang
Bulletin of The Korean Chemical Society | 2015
Hyojeong Kim; Mohammad A. Matin; Yeongmin O; Jihye Jang; Zhengqing Zhang; Joonkyung Jang
Journal of Physical Chemistry C | 2018
Zhengqing Zhang; Manho Lim; Yoonho Ahn; Joonkyung Jang
Computational Materials Science | 2018
Arindam Sannyal; Zhengqing Zhang; Xingfa Gao; Joonkyung Jang