Micro- and nano-scale liquid droplets must be precisely placed in proximity to conical solid tips in applications that include AFM tip dip-pen nanolithography. This seemingly simple task is strongly dependent on wetting conditions of the drop on the tip surface. Over a wide range of wetting conditions and drop volumes, drops can situate far from a conical needle apex at equilibrium, which can hinder the effectiveness of the respective applications. Needle geometry also affects drop location. On a right conical needle, liquid drops that wet the needle surface locate away from the apex. However, by careful consideration of their geometry, needles can be engineered to retain liquid drops near the tip or some other region of interest. In this work, a theoretical model is developed that predicts axisymmetric, equilibrium drop locations and shapes on conical, solid surfaces as a function of drop volume, needle geometry/shape, needle surface wettability (contact angle), liquid surface tension, line tension, and gravity.
A Collection of Papers in Honor of Professor Ivan B. Ivanov (Laboratory of Chemical Physics and Engineering, University of Sofia) Celebrating his Contributions to Colloid and Surface Science on the Occasion of his 70th Birthday
year
2006
month
jul
day
20
journal
Colloids and Surfaces A: Physicochemical and Engineering Aspects
%0 Journal Article
%1 citeulike:2860141
%A Hanumanthu, Ram
%A Stebe, Kathleen J.
%B A Collection of Papers in Honor of Professor Ivan B. Ivanov (Laboratory of Chemical Physics and Engineering, University of Sofia) Celebrating his Contributions to Colloid and Surface Science on the Occasion of his 70th Birthday
%D 2006
%J Colloids and Surfaces A: Physicochemical and Engineering Aspects
%K 76b45-capillarity
%P 227--239
%R 10.1016/j.colsurfa.2006.01.016
%T Equilibrium shapes and locations of axisymmetric, liquid drops on conical, solid surfaces
%U http://dx.doi.org/10.1016/j.colsurfa.2006.01.016
%V 282-283
%X Micro- and nano-scale liquid droplets must be precisely placed in proximity to conical solid tips in applications that include AFM tip dip-pen nanolithography. This seemingly simple task is strongly dependent on wetting conditions of the drop on the tip surface. Over a wide range of wetting conditions and drop volumes, drops can situate far from a conical needle apex at equilibrium, which can hinder the effectiveness of the respective applications. Needle geometry also affects drop location. On a right conical needle, liquid drops that wet the needle surface locate away from the apex. However, by careful consideration of their geometry, needles can be engineered to retain liquid drops near the tip or some other region of interest. In this work, a theoretical model is developed that predicts axisymmetric, equilibrium drop locations and shapes on conical, solid surfaces as a function of drop volume, needle geometry/shape, needle surface wettability (contact angle), liquid surface tension, line tension, and gravity.
@article{citeulike:2860141,
abstract = {{Micro- and nano-scale liquid droplets must be precisely placed in proximity to conical solid tips in applications that include AFM tip dip-pen nanolithography. This seemingly simple task is strongly dependent on wetting conditions of the drop on the tip surface. Over a wide range of wetting conditions and drop volumes, drops can situate far from a conical needle apex at equilibrium, which can hinder the effectiveness of the respective applications. Needle geometry also affects drop location. On a right conical needle, liquid drops that wet the needle surface locate away from the apex. However, by careful consideration of their geometry, needles can be engineered to retain liquid drops near the tip or some other region of interest. In this work, a theoretical model is developed that predicts axisymmetric, equilibrium drop locations and shapes on conical, solid surfaces as a function of drop volume, needle geometry/shape, needle surface wettability (contact angle), liquid surface tension, line tension, and gravity.}},
added-at = {2017-06-29T07:13:07.000+0200},
author = {Hanumanthu, Ram and Stebe, Kathleen J.},
biburl = {https://www.bibsonomy.org/bibtex/2cf6dec678e8d343f1841ed6aa5230e02/gdmcbain},
booktitle = {A Collection of Papers in Honor of Professor Ivan B. Ivanov (Laboratory of Chemical Physics and Engineering, University of Sofia) Celebrating his Contributions to Colloid and Surface Science on the Occasion of his 70th Birthday},
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journal = {Colloids and Surfaces A: Physicochemical and Engineering Aspects},
keywords = {76b45-capillarity},
month = jul,
pages = {227--239},
posted-at = {2008-06-04 01:28:44},
priority = {2},
timestamp = {2017-06-29T07:13:07.000+0200},
title = {{Equilibrium shapes and locations of axisymmetric, liquid drops on conical, solid surfaces}},
url = {http://dx.doi.org/10.1016/j.colsurfa.2006.01.016},
volume = {282-283},
year = 2006
}