Nanomaterials

Xanq 09 Physics English 4 pages

Content of the notes (4)

At least 1 dimension within 100 nm range.

As size reduces, Surface Area per unit Volume increases, resulting in different properties.

The above also applies as dimensionality decreases (3D to 0D nanomaterials).

Origin - Talks of Richard P Feynman - 1959

Term 'Nanotechnology' - Norio Taniguchi - 1974

1980s - Invention of STM, Discovery of fullerenes

Aim of Nanoscience:

Study properties

Create

Characterize

Gordon Moore - 1975 prediction - Number of transistors in an IC chip would double every 2 years.

Moore's law is an observation and projection of a historical trend and not a physical or natural law.

Applied in general to anything that increases exponentially with time.

Several micrometer long, but diameter is in the nanometer range.

TODO: Quantum confinement & Conductance Quantum