Whats so special about nanomaterials Where are they currentl

Solution

Nanomaterials are defined as materials with at least one external dimension in the size range from approximately 1-100 nanometers. Nanoparticles are objects with all three external dimensions at the nanoscale¹. Nanoparticles that are naturally occurring (e.g., volcanic ash, soot from forest fires) or are the incidental byproducts of combustion processes (e.g., welding, diesel engines) are usually physically and chemically heterogeneous and often termed ultrafine particles. Engineered nanoparticles are intentionally produced and designed with very specific properties related to shape, size, surface properties and chemistry. These properties are reflected in aerosols, colloids, or powders. Often, the behavior of nanomaterials may depend more on surface area than particle composition itself. Relative-surface area is one of the principal factors that enhance its reactivity, strength and electrical properties.

Uses of nanomaterials:

nanomaterials are used as thin films or surface coatings, as on computer chips or as nanowires, nanotubes, or as blobs of tiny nanocrystalline particles. In the clothing sector special functional textiles are under development, for example self-cleaning textile surfaces or protective insulating clothing.

Safety of nanomatrrials:

Current research indicates that exposure via inhalation and skin contact can result in nanoparticles entering the body. Nanoparticles are tiny particles that can be inhaled or ingested and may pose a possible problem both medically and environmentally.