Nanoparticles

A nanoparticle or ultrafine particle is usually defined as a particle of matter that is between 1 and 100 nanometres in diameter. The term is sometimes used for larger particles, up to 500 nm, or fibers and tubes that are less than 100 nm in only two directions. At the lowest range, metal particles smaller than 1 nm are usually called atom clusters instead. Nanoparticles are usually distinguished from microparticles, "fine particles", and "coarse particles", because their smaller size drives very different physical or chemical properties, like colloidal properties and ultrafast optical effects or electric properties. Being more subject to the brownian motion, they usually do not sediment, like colloidal particles that conversely are usually understood to range from 1 to 1000 nm. Being much smaller than the wavelengths of visible light, nanoparticles cannot be seen with ordinary optical microscopes, requiring the use of electron microscopes or microscopes with laser.

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MIT Develops Nanoparticles That Cross the Blood-Brain Barrier To Treat Cancer Tumors

Lipid nanoparticles carry gene-editing cancer drugs past tumor defenses

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Enabling Technologies of Tomorrow: Nanoparticles Control Flow of Light Like Road Signs Direct Traffic

Neuromodulation enabled by light-sensitive nanoparticles

Magnetic nanoparticles in biological vehicles individually characterized for the first time

Endometriosis treated by heating magnetic nanoparticles

Copper nanoparticles an effective spermicide

Nylon cooking bags, plastic-lined cups can release nanoparticles into liquids

Nanoparticles can cross the placenta during pregnancy, potentially exposing fetus

Nanoparticles prove effective against the yellow fever mosquito

Nanoparticles show promise for locating, removing endometriosis lesions

Overcoming COVID Variants: Decoy Nanoparticles Trick Coronavirus As It Evolves

A More Sensitive and Durable Rapid COVID-19 Test Using Nanoparticles

Nanoparticles could enable a more sensitive and durable rapid COVID-19 test

Sugar-coated nanoparticles target macrophages, reverse pulmonary fibrosis

Scavenger nanoparticles could make fuel cell-powered vehicles a reality

Engineering researchers develop porous nanoparticles for regenerative medicine

Optical Computing Advance: Breakthrough Discovery in Light Interactions With Nanoparticles

Seeing below the surface of bimetallic nanoparticles