## Files in this item

FilesDescriptionFormat

application/pdf

9904511.pdf (5MB)
(no description provided)PDF

## Description

 Title: Mapping Interactions Between Micropatterned Hydrophobic and Hydrophilic Surfaces by Atomic Force Microscopy Author(s): Kokkoli, Efrosini Doctoral Committee Chair(s): Zukoski, Charles F. Department / Program: Chemical Engineering Discipline: Chemical Engineering Degree Granting Institution: University of Illinois at Urbana-Champaign Degree: Ph.D. Genre: Dissertation Subject(s): Engineering, Chemical Abstract: Hydrophobic and hydrophilic interactions are not additive and the net interactions between heterogeneous surfaces depend on the relative size of hydrophobic and hydrophilic sites on the surface. Independent on whether the hydrophobic sphere is positioned on top of a hydrophobic or hydrophilic area, repulsions are measured, with the same strength and decay length of the electrostatic interaction. Jump into contact distances and adhesion data, between a 20 $\mu$m hydrophobic sphere and a heterogeneous surface that has equal hydrophobic and hydrophilic areas will average, whereas in all other cases the hydrophobic sphere will clearly differentiate between the different areas, accurately mapping high and low adhesion areas on the surface. Issue Date: 1998 Type: Text Language: English Description: 115 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1998. URI: http://hdl.handle.net/2142/82451 Other Identifier(s): (MiAaPQ)AAI9904511 Date Available in IDEALS: 2015-09-25 Date Deposited: 1998
﻿