nanotube
Definition
Noun: A nanotube is a fullerene molecule with a cylindrical or toroidal (doughnut-shaped) structure. It is a hollow, tube-like structure made of carbon atoms, typically with diameters on the scale of nanometers (billionths of a meter). Nanotubes are known for their exceptional strength, unique electrical properties, and thermal conductivity.
Usage
The word nanotube is used as a countable noun to refer to these specific molecular structures. It is most commonly associated with carbon nanotubes (CNTs) but can also refer to nanotubes made from other materials.
Examples
- Scientists are studying the electrical properties of a single nanotube.
- The material's strength comes from the nanotubes embedded within its matrix.
- This research focuses on synthesizing boron nitride nanotubes.
Advanced Usage
- "Carbon nanotube (CNT)": This is the most common and specific usage, referring to nanotubes composed entirely of carbon atoms. The term "nanotube" alone often implies a carbon nanotube in technical contexts.
- Carbon nanotubes are a key material in nanotechnology.
- The term can be used attributively (like an adjective) in compound nouns to describe related concepts (e.g., nanotube technology, nanotube synthesis). However, the core definition remains the noun form described above.
Variants and Related Words
- Carbon nanotube (CNT) (n): The specific and most widely known type of nanotube, made of carbon.
- Buckyball (n): A related fullerene molecule with a spherical shape, as opposed to a tubular one.
- Fullerene (n): The broader class of carbon molecules, which includes both nanotubes (cylindrical) and buckyballs (spherical).
- Nanostructure (n): A general term for any structure with dimensions measured in nanometers, which includes nanotubes.
Synonyms
- Carbon nanotube (when referring specifically to the carbon-based type)
- CNT (acronym)
- Molecular tube (a less common, more general term)
Related Phrases and Compounds
- Multi-walled nanotube (MWNT): A nanotube structure consisting of multiple concentric nanotubes nested inside one another.
- Single-walled nanotube (SWNT): A nanotube structure consisting of a single cylindrical layer of atoms.
- Nanotube forest: A vertically aligned array of nanotubes.
Noun
-
a fullerene molecule having a cylindrical or toroidal shape
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