Abstract:
When you control atoms, you control just about everything," said Richard Smalley, the 1996 Nobel Laureate, who discovered buckyballs, referring to the possibilities of
nanotechnology". The guiding vision
of nanotechnology is atomic
precision. In reality,
nanotechnology is an enabling
technology providing tools for the
fabrication, manipulation and
control of materials at the atomic
level. At the heart of
nanotechnology, it brings into
collaboration ideas in chemistry,
physics and biology mixed and
blended with engineering and
medicin e". Scientists and
engineers have shown an active
interest in nanotechnologies
because at sizes below 100 nm, the
fundamental chemical or electrical
properties of materials can change.
For example, silver metal used in
jewellary is typically inert,
however, at the nanoscale, it
becomes chemically more active
possessing antibacterial
properties. Such useful changes in
property have become the catalyst
for predictions of a range of
fundamental new advances in
chemistry and physics over the next
10 - 50 years, mostly in the
domains of new materials, the
environment, in medicine and
information technology. Although
the top and bottom of the nanoscale
(ideally ranging from 1 to 100 nm)
does not have sharp demarcations
- especially the upper value, it
excludes individual atoms on the
lower end, and matter that can be
seen with a very good optical
microscope on the upper end. This
harnessing of properties of matter
at the nano scale was predicted by
Richard Feynman's famous
prophesy in 1959:" there is plenty
of room at the bottom."
Nanotechnology is estimated to
make a great impact on the global
economy, and as such an
appropriate indicator of its
significance can be market
volumes. However, nanotechnology
as an industry cannot be easily
quantified although its contribution
to improvements in the existing
products and even to produce brand
new products. Most global market
forecasts of nanotechnology spans
between the period between 2000
and 2015. According to the United
State National Science Foundation
estimate of 2001, the world market
for nanotechnological products by
2015 will be around 1 trillion US
Dollars". On the other hand, the
Lux Research Corporation
estimated in 2004 that the same
Globally, nanotechnology is market to be 2.6 trillion US Dollars
projected to be an all pervasive by 20144. The latter which gives a
EconomicReview:Dec.2010/Jan.2011 -
Applications of nanotechnology are
enabled by nanomaterials, which
have novel optical, electric or
magnetic properties. The building
blocks of nanotechnology are
semiconductors, metals, metal
oxides, carbon materials and
organics. The emerging commercial
growth areas in nanotechnology are
nanomaterials and nanomaterials
processing, nanobiotechnology,
nanophotonics, nanoelectronics
and nanoinstrumentation.
Nanomaterials and nanomaterials
processing companies develop the
materials and methods to
manipulate and manufacture
products based on nano materials.
Nanophotonics involves the
development of highly integrated
optical- communication s
components using nano-optic and
nano-manufacturing technologies
leading to rapid prototyping, highperformance
advantages, smaller
forms and lower costs.
Nanobiotechnology IS
multidisciplinary combining areas
such as biology and
nanoelectronics to fabricate arrays
of tiny diagnostic sensors that
can detect specific biological
molecules or individual strands of
DNA. These devices will provide
faster, cheaper and more
comprehensive diagnoses of
complex diseases. Nanoelectronics
includes electronic and optoelectronic
devices in which
individual assemblies of
nanometer-scale components
function as active device elements.
Potential nanoelectronics products
include integrated memory logic,
passive optical components, field
emission devices, and flat-panel
display and light-emitting diodes.