Imperial College London

Dr Tom Reddyhoff

Faculty of EngineeringDepartment of Mechanical Engineering

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 3840t.reddyhoff Website

 
 
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Location

 

670City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Hu:2019:10.1021/acs.langmuir.9b00107,
author = {Hu, S and Reddyhoff, T and Puhan, D and Vladescu, S-C and Huang, W and Shi, X and Dini, D and Peng, Z},
doi = {10.1021/acs.langmuir.9b00107},
journal = {Langmuir},
pages = {5967--5974},
title = {Bi-Gaussian stratified wetting model on rough surfaces},
url = {http://dx.doi.org/10.1021/acs.langmuir.9b00107},
volume = {35},
year = {2019}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Wetting mechanisms on rough surfaces were understood from either a monolayer or a multiscale perspective. However, it has recently been shown that the bi-Gaussian stratified nature of real surfaces should be accounted for when modeling mechanisms of lubrication, sealing, contact, friction, acoustic emission, and manufacture. In this work, a model combining Wenzel and Cassie theories was put forward to predict the static contact angle of a droplet on a bi-Gaussian stratified surface. The model was initially applied to numerically simulated surfaces and subsequently demonstrated on hydrophilic steel and hydrophobic self-assembled monolayer specimens with preset bi-Gaussian stratified topographies. In the Wenzel state, both the upper and the lower surface components are fully wetted. In the Cassie state, the upper component is still completely wetted, while the lower component serves as gas traps and reservoirs. By this model, wetting evolution was assessed, and the existence of different wetting states and potential state transitions was predicted.
AU - Hu,S
AU - Reddyhoff,T
AU - Puhan,D
AU - Vladescu,S-C
AU - Huang,W
AU - Shi,X
AU - Dini,D
AU - Peng,Z
DO - 10.1021/acs.langmuir.9b00107
EP - 5974
PY - 2019///
SN - 0743-7463
SP - 5967
TI - Bi-Gaussian stratified wetting model on rough surfaces
T2 - Langmuir
UR - http://dx.doi.org/10.1021/acs.langmuir.9b00107
UR - https://pubs.acs.org/doi/10.1021/acs.langmuir.9b00107
UR - http://hdl.handle.net/10044/1/70170
VL - 35
ER -