6533b832fe1ef96bd129ac8c
RESEARCH PRODUCT
Adhesion and Friction Forces between Spherical Micrometer-Sized Particles
Lars-oliver HeimJürgen BlumHans-jürgen ButtMarkus Preusssubject
Materials scienceAtomic force microscopyMeasure (physics)Physics::OpticsGeneral Physics and AstronomyAdhesionMicrospherelaw.inventionMicrometreParticle radiusOptical microscopelawbiological sciencesComposite materialdescription
An experimental setup, based on the principles of atomic force microscopy (AFM), was used to measure directly the adhesion and rolling-friction forces between individual silica microspheres of radii between 0.5 and 2.5 \ensuremath{\mu}m. It showed that the linear dependence of the pull-off force on the particle radius is still valid for micron-sized particles. Rolling-friction forces between silica microspheres were measured for the first time by combining AFM methods and optical microscopy: They are $\ensuremath{\sim}100$ times lower than the corresponding adhesion forces.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-10-18 | Physical Review Letters |