A facile evanescent-field imaging approach for monitoring colloidal gel evolution near a surface.
basic_science · Level V
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- Record sourced from PubMed, PMID 33881131.
- Also identified by DOI 10.1039/d1sm00331c.
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Abstract
A facile evanescent-field imaging approach is developed to probe the aggregation behavior of near-wall colloids/clusters during colloidal gel evolution. Total internal reflection microscope (TIRM) images are directly utilized to access the structural relaxation time via density-fluctuation theory. The behaviors of cluster-cluster aggregation and physical aging of the colloidal gel networks are resolved in both time and space under fractal scaling criteria.