Essay by noraaliHigh School, 12th grade November 2014

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What is a nanoparticle?

- According to IUPAC it is a Particle of any shape with dimensions in the 1 × 10−9 and 1 × 10−7 m range.\

-Below 1 nm may be excluded in order to avoid calling clusters of atoms a particle

-he lower size limit helps to distinguish a particle from random clusters of atoms. The upper limit is the largest at which size related property differences normally manifest themselves.

/-Current usage emphasizes size and not properties in the definition. s /particle-characterization/applications/what-is-a-nanoparticle/

That's about an 8,000th of a human hair in width. They occur naturally in our environment, in things like clay, volcanic ash, ocean spray and even milk. They can also be manufactured for use in a range of everyday commercial products.

Nanoparticles are intriguing to scientists because the properties of a chemical, such as silver or zinc oxide, in nano form can differ substantially from a larger particle of the same chemical and this opens up a range of new uses for that chemical.

Nanoparticle research is currently the most studied branch of science with the number of uses of nanoparticles in various fields. The particles have wide variety of potential applications in biomedical, optical and electronic fields.

The history of nanoparticle research is long and the use of these particles dates back to the 9th century in Mesopotamia when artisans used these to generate a glittering effect on the surface of pots.

Michael Faraday provided the first description, in scientific terms, of the optical properties of nanometer-scale metals in his 1857 paper.

- medical technology use link

Nanoparticles are important scientific tools that have been and are being explored in various biotechnological, pharmacological and pure technological uses. They are a link between bulk materials and atomic or molecular structures.

While bulk...