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nanoparticle
This term is primarily used in scientific and technical registers, specifically within nanotechnology, chemistry, and materials science. It describes a physical object whose scale is so minute that quantum effects often begin to dominate over classical physics, altering the material's chemical reactivity and optical properties.
In a medical or environmental context, the word often carries a connotation of risk or scrutiny, particularly regarding toxicity and the ability of these particles to penetrate biological membranes. It is distinct from "molecule" in that a nanoparticle is typically an aggregate of many atoms or molecules rather than a single chemical unit.
Meanings
Examples
Silver nanoparticles are often used in bandages to prevent infection.
I wonder if a single nanoparticle could actually penetrate the cell membrane.
The coating contains a nanoparticle network that repels water.
We need to analyze how each nanoparticle interacts with the catalyst.
These nanoparticles are too small to be seen with a standard light microscope.
The new drug delivery system uses a lipid nanoparticle to transport the mRNA.
Could the toxicity of the nanoparticle be reduced by changing its surface charge?
The lab specializes in the synthesis of carbon-based nanoparticles.