# Colloidal aggregation in microgravity by critical Casimir forces

Source: [Colloidal aggregation in microgravity by critical Casimir forces](<https://www.sota2.com/research/paper/68fa30541e209131ce87429c>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T18:07:50.719Z

Authors: Sandra J. Veen, Oleg Antoniuk, Bart Weber, Marco Potenza, Stefano Mazzoni, Peter Schall, Gerard H. Wegdam

Published: 2012-05-30T18:10:13.000Z

## Abstract

By using the critical Casimir force, we study the attractive strength dependent aggregation of colloids with and without gravity by means of Near Field scattering. Significant differences were seen between microgravity and ground experiments, both in the structure of the formed fractal aggregates as well as the kinetics of growth. Ground measurements are severely affected by sedimentation resulting in reaction limited behavior. In microgravity, a purely diffusive behavior is seen reflected both in the measured fractal dimensions for the aggregates as well as the power law behavior in the rate of growth. Formed aggregates become more open as the attractive strength increases.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1205.6772>)

[PDF](<https://arxiv.org/pdf/1205.6772.pdf>)