Colloids are heterogeneous physical systems in which one phase (dispersed phase) is finely distributed within another continuous phase, with characteristic particle or domain sizes typically in the range of ~1–1000 nm. They exhibit properties dominated by interfacial phenomena, Brownian motion, and long-range interactions rather than gravitational settling. Colloidal stability is governed by a balance of van der Waals, electrostatic, steric, and depletion forces, often described by DLVO and extended theories. These systems encompass sols, gels, emulsions, foams, and aerosols, and serve as model platforms for studying phase behavior, self-assembly, rheology, and non-equilibrium dynamics in soft condensed matter physics.
Recent research has broken the size limitation of traditional ferroelectric effects, providing experimental evidence and theoretical simulations to confirm that a structure with as few as 5,000 atoms can still exhibit solid-state ...
Nanophysics
Feb 16, 2024
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280
Daniela Kraft's group has succeeded in creating a network of microparticles that is both strong and completely flexible. This may sound simple, yet they are the first in the world to succeed in doing so. The achievement represents ...
Soft Matter
Feb 15, 2024
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93
Colloidal semiconductor nanoparticles can be viewed as a complex of an inorganic single crystal core and a monolayer of organic ligands. The location and type of ligand anchoring on the nanocrystal surface are critical to ...
Nanophysics
Feb 7, 2024
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72
Artificial intelligence using neural networks performs calculations digitally with the help of microelectronic chips. Physicists at Leipzig University have now created a type of neural network that works not with electricity ...
Nanophysics
Jan 29, 2024
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89
Self-propelled nanoparticles could potentially advance drug delivery and lab-on-a-chip systems—but they are prone to go rogue with random, directionless movements. Now, an international team of researchers has developed an ...
Bio & Medicine
Dec 8, 2023
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119
Bayreuth researchers have found ways to control tiny particles in liquids using magnetic patterns. The research results have now been published in Nature Communications under the title "Simultaneous and independent topological ...
Nanophysics
Dec 6, 2023
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145
Active matter systems feature unique behaviors that include collective self-assembly structures and collective migration. However, the efforts to realize collective entities in spaces without wall-adhered support, in order ...
A team of researchers from the Mirkin Group at Northwestern University's International Institute for Nanotechnology in collaboration with the University of Michigan and the Center for Cooperative Research in Biomaterials- ...
Bio & Medicine
Nov 2, 2023
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203
A team of chemical and biological engineers working with a group of nanotechnologists at Northwestern University in Illinois has developed a type of super-strong colloidal crystal metamaterial by gluing together metal nanostructures ...
Stirring can allow the dispersion of substances evenly in liquid. Einstein's tea leaf paradox is a concept that shows how tea leaves can concentrate in a doughnut shape through a secondary flow effect during stirring. In ...
