Lateral hydrodynamic interactions between an emulsion droplet and a flat surface evaluated by frictional force microscopy.
Langmuir
; 26(11): 8002-7, 2010 Jun 01.
Article
em En
| MEDLINE
| ID: mdl-20334399
ABSTRACT
We introduce a lateral atomic force microscopy (AFM) method to measure the hydrodynamic drag force acting on a microscopic emulsion droplet moving parallel to a flat surface. A tetradecane oil droplet formed in an aqueous solution of sodium dodecylsulfate was attached to a V-shaped atomic force microscopy cantilever, and lateral hydrodynamic interactions between the droplet and a flat glass surface were measured using a range of scanning velocities. The droplet was positioned either far from the oscillating surface or was pressed to the surface under a constant applied load. These measurements demonstrate the feasibility of using AFM to study lateral hydrodynamic interactions and lubricity between soft matter materials relevant to a large number of applications in areas as diverse as flavor delivery in foods to the applications of emulsions or emollients in personal care products.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Microscopia de Força Atômica
/
Emulsões
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article