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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/206028
- Thermodynamic stability of interfacial gaseous states
- Zhang, Xue Hua; Maeda, Nobuo; Hu, Jun
- We studied the thermodynamic stability of interfacial gaseous states on atomically smooth highly ordered pyrolytic graphite (HOPG) in water using atomic force microscopy. Quasi-two-dimensional gas layers (micropancakes) required a higher supersaturation of gas than spherical-cap-shaped nanobubbles. The two forms of gas coexisted at a sufficiently high supersaturation of gas where one or more of the nanobubbles may sit on top of a micropancake. The micropancakes spontaneously coalesced with each other over time. After the coalescence of two neighboring micropancakes which each had had a nanobubble on top, one nanobubble grew at the expense of the other. We analyzed these results assuming temporal and local quasi-equilibrium conditions.
- Publication type
- Journal article
- Journal of Physical Chemistry B, Vol. 112, no. 44 (Nov 2008), pp. 13671-13675
- Publication year
- FOR Code(s)
- 02 Physical Sciences; 03 Chemical Sciences; 09 Engineering
- Atomic force microscopy; Atomic forces; Carbon; Chemistry; Equilibrium conditions; Gas layers; Gaseous states; Gases; Graphite; Highly ordered pyrolytic graphites; Nanobubbles; Pyrrole derivative; Pyrroles; Supersaturation; Thermodynamic stability; Thermodynamics; Water using
- American Chemical Society
- Publisher URL
- Copyright © 2008 American Chemical Society.
- Peer reviewed