what is a “nano” ? a unit of measurement 1 x 10 -9 or 0.000000001
TRANSCRIPT
Nanotechnology Hot Topic
What is a “nano” ?
A unit of measurement
1 x 10 -9 or 0.000000001
Nanoparticles
Particles of a material that are VERY small, measured in nanometers
Possess specific chemical and physical characteristics due to their small size
Chemical/physical properties of a material CHANGES as a result of size reduction.
Increased surface area----small size
OLD Practice, New Concept
How do the properties change?
Electrical properties Differ in conductivity between graphene
sheets and carbon nanotubes of graphite
Reaction properties Possible increase in reaction rates Enhanced catalytic function Ex. Gold, aluminum
Wide Variety of Purposes
Medicine
Engineering
Research
Electricity