Review: Deformation and Adhesion of Viscoelastic Particles: Theory and Experiment

2001 ◽  
Vol 54 (8) ◽  
pp. 477 ◽  
Author(s):  
Phil Attard ◽  
Graeme Gillies
Keyword(s):  
Atomic Force Microscopy ◽  
Force Measurements ◽  
Force Microscopy ◽  
Load Dependence ◽  
Viscoelastic Parameters ◽  
Atomic Force ◽  
Extended Range ◽  
Deformable Bodies ◽  
Viscoelastic Theory ◽  
General Method

A summary is given of the authors’ recent research on viscoelastic theory and its application to colloid probe atomic force microscopy. A general computational approach for the interaction of viscoelastic colloids interacting with realistic surface forces of extended range is outlined, and the origins of velocity- and time-dependent effects including hysteresis are discussed. A general method for establishing the zero of separation in atomic force microscopy of deformable bodies is described and utilized in force measurements made on viscoelastic poly(dimethylsiloxane) colloid particles. A quantitative analysis of the velocity and load dependence of the hysteresis in the measurements yields the viscoelastic parameters of the colloid.

Direct Force Measurements at Polymer Brush Surfaces by Atomic Force Microscopy

1998 ◽  
Vol 31 (13) ◽  
pp. 4297-4300 ◽  
Author(s):  
Tommie W. Kelley ◽  
Phillip A. Schorr ◽  
Kristin D. Johnson ◽  
Matthew Tirrell ◽  
C. Daniel Frisbie
Keyword(s):  
Atomic Force Microscopy ◽  
Polymer Brush ◽  
Force Measurements ◽  
Force Microscopy ◽  
Atomic Force

Understanding the Mechanical Properties of Microalgae Using Atomic Force Microscopy

2013 ◽  
Author(s):  
Kristin M. Warren ◽  
Jeremiah Mpagazehe ◽  
C. Fred Higgs ◽  
Philip LeDuc
Keyword(s):  
Mechanical Properties ◽  
Atomic Force Microscopy ◽  
Energy Production ◽  
Industrial Processes ◽  
Force Measurements ◽  
Detailed Understanding ◽  
Force Microscopy ◽  
Atomic Force ◽  
Scenedesmus Dimorphus ◽  
The Individual

From consumer productions to energy production, algae is used in many industrial processes. Understanding the mechanical behavior of algae is important to optimize these processes. To obtain a better understanding of algae cell response, we mechanically characterized single, dried Scenedesmus dimorphus cells. To accomplish this, we used atomic force microscopy (AFM) to image S. dimorphus cells, which enabled us to map the AFM measurements to a location on the individual cells. We were then able to perform force measurements on the AFM to determine the Young’s modulus of S. dimorphus. These findings enable a more detailed understanding of the mechanical properties of a single S. dimorphus cell, which may be useful in many applications.

Sign in / Sign up

Export Citation Format

Share Document