4.8 Article Proceedings Paper

Wettability of Supported Monolayer Hexagonal Boron Nitride in Air

Journal

ADVANCED FUNCTIONAL MATERIALS
Volume 27, Issue 19, Pages -

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201603181

Keywords

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Funding

  1. 973 program [2013CB932604, 2012CB933403]
  2. National Natural Science Foundation of China [51472117, 51535005, 11402113]
  3. Research Fund of State Key Laboratory of Mechanics and Control of Mechanical Structures [0414K01]
  4. NSF of Jiangsu province [BK20130781, BK20140807]
  5. Funding of Jiangsu Innovation Program for Graduate Education [CXZZ13_0150]
  6. Fundamental Research Funds for the Central Universities [20160103]
  7. NUAA Fundamental Research Funds [NP2015203]
  8. Priority Academic Program Development of Jiangsu Higher Education Institutions
  9. National and Jiangsu Postdoctoral Research Funds [2014M550288, 1302015B]

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Hexagonal boron nitride (h-BN), a wide band gap monolayer crystal with structure similar to graphene, is optically transparent with exceptionally high thermal and chemical stability, and should be ideal to serve as an atomically thin coating. However, limited by the challenges in fabricating h-BN of high quality in large area, the wetting performance of h-BN has seldom been studied. Here, it is shown that the water contact angle of freshly grown h-BN film is nearly independent of the underlying materials as well as the h-BN layer number, but increases gradually to a saturated stable value in air due to the spontaneous adsorption of airborne hydrocarbon. First-principles calculations and molecular interaction modeling confirm that a monolayer h-BN coating does efficiently tune the interaction of a water molecule with different substrates to a converging level. The saturated wettability of h-BN coating is robust against variation of several factors, facilitating its practical applications.

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