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.
Northwestern University researchers have uncovered a previously unknown property of colloidal crystals, highly ordered three-dimensional arrays of nanoparticles.
Nanomaterials
Oct 17, 2022
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88
Research into the synthesis of new materials could lead to more sustainable and environmentally friendly items such as solar panels and light emitting diodes (LEDs). Scientists from Ames National Laboratory and Iowa State ...
Nanomaterials
Sep 20, 2022
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199
Surface modification of micro-nanoparticles at the atomic and close-to-atomic scales is of great importance to their applications in a variety of fields, such as energy storage, catalysis, sensors, and biomedicine. In order ...
Nanomaterials
Jul 13, 2022
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69
Extrusion-based 3D printing of bio solids, or "bioprinting," is a promising approach to generating patient-specific, tissue-engineered grafts. However, a major challenge in bioprinting is that most currently used materials ...
Bio & Medicine
Jun 29, 2022
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118
Researcher Laura Rossi and her group at TU Delft have found a new way to build synthetic materials out of tiny glass particles—so-called colloids. Together with their colleagues from Queen's University and the University ...
Nanomaterials
May 27, 2022
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749
A research team led by Northwestern University and the University of Michigan has developed a new method for assembling particles into colloidal crystals, a valuable type of material used for chemical and biological sensing ...
Nanomaterials
Mar 31, 2022
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265
A research group led by Prof. Wu Kaifeng from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences (CAS) revealed the mechanism for molecular spin-triplets formation from rapid spin-flip in colloidal ...
Nanophysics
Mar 24, 2022
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94
Named for a Roman god, Janus particles refer to nanoparticles that possess surfaces with two or more distinct physical chemical properties.
Nanophysics
Jan 25, 2022
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136
Nature keeps a few secrets. While plenty of structures with low symmetry are found in nature, scientists have been confined to high-symmetry designs when synthesizing colloidal crystals, a valuable type of nanomaterial used ...
Nanomaterials
Jan 13, 2022
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175
Researchers at the University of Michigan and Seoul National University of Science and Technology have devised a new method for manufacturing devices that require precisely sized and positioned micro- and nanoscale particles. ...
Nanophysics
Dec 3, 2021
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189
