the meaning of all this?
conception of a space-based sun tower.
An emerging arena involving extremely small materials, devices
and components. A nanometer equals one-billionth of a meter.
Graphite structures 50,000 times thinner than a human hair. Among
other promising characteristics, they are extremely strong and
can behave like metals or semiconductors.
A material with electrical conductivity between that of metals
and insulators. Semiconductors are the basic material of many
electronic devices used in computer technology, telecommunications,
control systems and other applications.
Devices such as solar cells that convert light into electricity.
thermionics: A developing technology for the conversion of
heat into electricity using semiconductor structures.
Granules of a semiconductor material made up of only a few hundred
atoms. These tiny boxes can selectively hold or release
Rechargeable batteries that are smaller, lighter and have a higher
voltage and hold a charge longer than other types of batteries.
Ultra or supercapacitors:
High efficiency electrical energy storage devices.