Observation of a liquid-to-layered transition in thin liquid films when surface and interface regions overlap
- Authors
- Lee, DR; Dutta, P; Yu, CJ
- Issue Date
- Mar-2008
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW E, v.77
- Journal Title
- PHYSICAL REVIEW E
- Volume
- 77
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/6061
- DOI
- 10.1103/PhysRevE.77.030601
- ISSN
- 1539-3755
- Abstract
- We have used x-ray reflectivity to study the coupling of surface and interface layering in a molecularly thin normal liquid [tetrakis(2-ethylhexoxy)silane (TEHOS)], as a function of temperature and film thickness. The best fits to the data were obtained with an electron density model that consists of a uniform density component superimposed upon molecular-scale density oscillations ( layers ). The two types of layer profiles were observed to vary with temperature from 187-286 K. The amount of material in the molecular layers increases as that in the uniform density layer decreases, with the onset of liquid-to-layered transition occurring at a total film thickness of similar to 40 angstrom (about twice the bulk correlation length of TEHOS).
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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