Term #1,462
nanomaterial
Claim Term
nanomaterial
Origin matter
Fusion Cage with carbon nanotube coating/covering
Reference Case 1
INS-4PROV
Date Added
6/30/21
Created
6/30/21, 3:42 PM
Modified
7/2/21, 3:30 PM
Full Desc
As used herein, "nanomaterial" refers to a material of which a single unit has a small size (in at least one dimension) between 1 and 100 nanometers, also referred to as nanoscale. Materials with a structure at the nanoscale may have unique optical, electronic, thermo-physical or mechanical properties. Nanomaterial also includes material defined by the ISO/TS 80004 standard as "material with any external dimension in the nanoscale or having internal structure or surface structure in the nanoscale", with nanoscale defined as the "length range approximately from 1 nm to 100 nm." This includes both nano-objects, which are discrete pieces of material, and nanostructured materials, which have internal or surface structure on the nanoscale; a nanomaterial may be a member of both these categories. Nanomaterial may be specifically engineered, occur naturally, or be created as an incidental byproduct of another mechanical or industrial process.
Nano-objects are often categorized based on how many of their dimensions fall in the nanoscale. A nanoparticle is defined a nano-object with all three external dimensions in the nanoscale, having a longest and the shortest axes that do not differ significantly. A nanofiber has two external dimensions in the nanoscale, with nanotubes being hollow nanofibers and nanorods being solid nanofibers. A nanoplate/nanosheet has one external dimension in the nanoscale, and if the two larger dimensions are significantly different it is referred to as a nanoribbon. For nanofibers and nanoplates, the other dimensions may or may not be in the nanoscale but are typically significantly larger. A difference in dimensions may be considered significant if the difference is at least a factor of 3.
Nanostructured materials can be categorized by what phases of matter they contain. A nanocomposite is a solid containing at least one physically or chemically distinct region, or collection of regions, having at least one dimension in the nanoscale. A nanofoam has a liquid or solid matrix, filled with a gaseous phase, where one of the two phases has dimensions on the nanoscale. A nanoporous material is a solid material containing nanopores, voids in the form of open or closed pores of sub-micron length scales. A nanocrystalline material has a significant fraction of crystal grains in the nanoscale. (Search "nanomaterial" on Wikipedia.com May 29, 2021. CC-BY-SA 3.0 Modified. Accessed June 30, 2021.)