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.
Due to their iridescent colors, opals have been considered particularly precious gemstones since antiquity. The way these stones shimmer is caused by their nanostructures. A research group led by Prof. Dr. Markus Retsch at ...
Nanomaterials
Sep 28, 2021
0
73
Russian scientists have found that coating magnetic nanoparticles with a non-magnetic silica shell coating significantly decreased the viability of cancer cells in a low frequency alternating magnetic field. The coating increases ...
Bio & Medicine
Aug 26, 2021
0
164
Ligands are much like nanosized barnacles, binding to many kinds of surfaces. This form of adsorption is crucial for a range of chemical processes, from purification and catalysis to the design of nanomaterials.
Nanomaterials
Jul 14, 2021
0
93
A recent study by scientists from Japanese universities has shown that the shape of cell-derived nanoparticles, known as "extracellular vesicles" (EVs), in body fluids could be a biomarker for identifying types of cancer. ...
Bio & Medicine
Jul 7, 2021
0
87
Quantum dots (QDs) are semiconductor particles only a few nanometers across that, thanks to their small size, exhibit peculiar optical and electronic properties due to quantum mechanics. With existing and foreseen applications ...
Nanomaterials
Jun 25, 2021
0
87
In a breakthrough in metamaterials, for the first time in the world, researchers at Tel Aviv University have developed an innovative nanotechnology that transforms a transparent calcite nanoparticle into a sparkling gold-like ...
Nanomaterials
Jun 10, 2021
0
182
