Coulomb Repulsion at the Nanometer-Sized Contact: A Force Driving Superhydrophobicity, Superfluidity, Superlubricity, and Supersolidity
| Autor: | Chang Q. Sun, Longtu Li, Yi Sun, Likun Pan, Zhuo Sun, Xi Zhang, Shansheng Yu, Ji Zhou, Xiaohui Wang, Yanguang Ni, Jisheng Pan, Weitao Zheng |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | The Journal of Physical Chemistry C. 113:20009-20019 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp907726b |
| Popis: | Superhydrophobicity, superfluidity, superlubricity, and supersolidity (4S) at the nanometer-sized liquid−solid or solid−solid contacting interfaces have long been issues of puzzling with the common characteristics of nonsticky and frictionless motion. Although the 4S occurrences have been extensively investigated, the mechanism behind the common characteristics remains unclear. From the perspectives of broken-bond-induced local strain and the skin-depth charge and energy quantum trapping and the associated nonbonding electron polarization, we proposed herewith that the Coulomb repulsion between the “electric monopoles or dipoles locked in the elastic solid skins or the solidlike covering sheets of liquid droplets” forms the key to the 4S. The localized energy densification makes the skin stiffer and the densely and tightly trapped bonding charges polarize nonbonding electrons, if exist, to form locked skin monopoles. In addition, the sp-orbit hybridization of F, O, N, or C upon reacting with solid atoms g... |
| Databáze: | OpenAIRE |
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