Thesis on "Use of Emerging Technology"
Thesis 6 pages (1832 words) Sources: 5 Style: APA
[EXCERPT] . . . .
The Scientific, Commercial and Creative Prospects in Carbon NanotubeInnovations
Most simply phrased, the carbon nanotube is a form of carbon. The
most recently uncovered of eight carbon allotropes, this is a molecular
configuration of the basic element and is categorized as a member of the
fullerene family. The fullerene allotrope has itself only recently been
added to the list of known configurations. A spherical manifestation of
the element, this molecule is similar to the tubular form in its linked,
hexagonal structure and hollow walls. (Wikipedia, 1)
The carbon nanotube eluded full exploitation for so long perhaps
because of its novel structure, even more certainly, for lack of the proper
magnification technology to fully explore its possible applications.
Cylindrically shaped, carbon nanotubes are so named for their extremely
small diameter, which can be estimated at "a few nanometers (approximately
50,000 times smaller than the width of a human hair), while they can be up
to several millimeters in length." (Wikipedia, 1) The exponential
comparison of the length to the decisively minute diameter renders a form
of carbon with a unique permutation of properties and, thus, of
applications.
The carbon nanotube is uniquely strong. Exhibiting a strength and
elasticity greater than any other carbon allotrope, the molecule may be
detected in either the single-wall formation or the multi-wall formation.
To distinguish, "single-wall nanotubes can be thought of as the fundamen
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cylindrical structure, and these form the building blocks of both multi-
wall nanotubes and the ordered arrays of single-wall nanotubes called
ropes." (Dresselhaus, 1) These ropes exhibit a dipolar effect in which
intermolecular forces naturally draw the carbon nanotubes into tightly
interlocked formations. This accounts for their potential to be extended
to great lengths without surrendering or distorting any of the properties
which make the nanotube so important a discovery.
It is widely noted that Sumio Iijima 'discovered' the carbon nanotube
in 1991, when he utilized the process of orbital hybridization to merge
atomic particles in the synthesis of a new allotrope. In fact though,
journal records illustrate that researchers have in some form or another
ventured to devise practical applications for the microscopic exploratory
potential in extraordinarily precise molecular filaments since as far back
as 1889. (Monthioux et al, 2) However, it was with Iijima's published
article on the behalf of the NEC Corporation that the modern inception of
the carbon nanotube into the thereafter increasingly proliferated
discipline of nanotechnology began in earnest.
Iijima produced a study documenting his teams formation of a new,
usable carbon allotrope, "using an arc-discharge evaporation method similar
to that used for fullerene synthesis, the needles grow at the negative end
of the electrode used for the arc discharge. Electron microscopy reveals
that each needle comprises coaxial tubes of graphitic sheets, ranging in
number from 2 up to about 50. On each tube the carbon-atom hexagons are
arranged in a helical fashion about the needle axis." (Iijima, 56)
Following the publication of his findings, the carbon nanotube has
developed into an item of central importance in the advancement of its
field. Nanotechnology concerns the implementation of technological
strategies that must be executed at a scale of infinitesimal smallness,
with the ambition of observing and manipulating matter at the atomic level
as a prospective eventual horizon. The implications of nanotechnology
extend through virtually any discipline, offering enhancements to computer
hardware, medical equipment and procedure, military equipment, building
resources and space exploration.
Thus, the advent of a material as strong as the carbon nanotube-with
its strength derived from a hybridization process in which a double bond
adjoins multiple molecules-has illuminated a great many innovative
possibilities. And indeed, "it is becoming clear from recent experiments
that carbon nanotubes are fulfilling their promise to be the ultimate high
strength fibres in materials applications." (Forro et al, 5)
The allotrope's most rational immediate applications are already beginning
to find commercial use, with nanotubes being dispatched to the polymers
composing concrete, improving the strength and elasticity of architectural
resources. This may point the way to safer, sounder structures.
The electromagnetic properties of the nanotube also make it a
versatile matter for use in computer circuitry, where its low conducting
heat might make it a promising replacement for silicon. Other practical
uses include its employment as a longer-lasting lightbulb filament; its
currently implemented use as a conductive element in tiny electric motors;
and the manufacture of wear-resistant fibers.
Still more fantastical applications have already begun to find their
way into production. A compelling scientific elaboration upon the
availability of carbon nanotubes has been the synthesis of artificial
muscle. The carbon nanotubes' strength, smallness and electroactive
responsiveness make it a suitable transmitter of sensory signals in the
field of robotics.
Another imaginative prospect currently under exploration is the
development of the Space Elevator. Addressed through investigation at
several joint universities in the United States, the collective ambition
"is that one day a space elevator, comprised of a robot that will climb a
strong tether about 100,000 kilometres (60,000 miles) long, will be able to
send humans or other cargo cheaply into space." (Young, 1) The ribbon with
which this would be accomplished, most of the researchers currently
involved believe, must be composed of carbon nanotube. Its defining
capability to retain its hardness at lengths many times greater than its
diameter suggests it as the ideal material for the project. As of 2004,
researchers had claimed the ability to produce a nanotube of up to 300
meters in length. (Wikipedia, 1) However, current limitations in
available technology render a lengthened nanotube whose properties will
have changed due to a decrease in density. Particularly, the
characteristic strength of the nanotube would be compromised under
currently available technological conditions.
Still, some applications which may be in the more immediate future
could have a great impact on our current technological standards. By using
electron lithography and reactive ion etching to render a charged nanotube
300nm long, nanotechnology physicists have exposed another promising
implementation of the substance. A mounted, charged and extended nanotube
is produced by this process, resulting in a tightly stretched, thin 'guitar
string' of carbon. The taut rendering of the carbon device, researchers
have hypothesized, will allow it, when stimulated, to vibrate at extremely
high frequencies. The recent breakthrough in a University of California,
Berkeley laboratory, occurring just in August of this year, is a powerful
demonstration of the potential applications for the fast evolving
technology. The study demonstrated "how a test mass placed on the string
causes it to vibrate more slowly. The device can detect masses of just 10-
18 grams." (Adler, 1) Such is to assert that this application of the
nanotube will allow us to detect items at a mass which today is impossible
to physically measure. The metric cited above is currently only
theoretical, but may become the empirically observable mass of the molecule
according to the attendant researchers.
The exciting implications of this technology, therefore, may extend
as far as the detection of bacteria or chemicals which are in some context
potentially harmful to human beings. The research cited above contends
that the successful attainment of this project's goals will yield a tool
capable of locating a viral infection in the body at its incubational
stages. Likewise, its sensitivity to the presence of molecular agents
which might be identified in detecting and preventing impending terrorist
germ or chemical assaults suggests an incredible potential for the
advancement of defense and security technology.
Today though, the allotrope's most rational immediate applications are
already beginning to find commercial use, with nanotubes being dispatched
to the polymers composing concrete, improving the strength and elasticity
of architectural resources. This may point the way to safer, sounder
structures. Indeed, as our research denotes, "concrete structures from
bridges to condominium complexes are susceptible to cracks, corrosion and
other forces of natural and man-made chemical assault and degradation.
Aging structures can be repaired, but at significant cost." (AzoNano, 1)
This points to the initial presumption in this discussion, that there is a
real and persistent need to continue to improve our means to build
structures that are safe and reliable.
Increasingly, evidence is suggesting that the unique properties of the
carbon nanofiber makes it an appropriate way to reinforce concrete walling
where deemed appropriate. The simultaneous sturdiness and flexibility may
help to give concrete the type of composition that might allow it withstand
the fluctuation and imposition of the elements. To this idea, our research
denotes that "nanofibers made of carbon, for example, might be added to a
concrete bridge, making it possible to heat the structure during winter or
allowing it to monitor itself for cracks because of the fibers' ability to
conduct electricity." (AzoNano, 1) In fact, the electromagnetic properties
of the nanotube make it a versatile matter for use in a number of other
areas, such as computer circuitry, longer-lasting lightbulb filament; its
currently implemented use as a conductive element in tiny electric motors;
and the manufacture of wear-resistant fibers.
At present though, the ramifications of the use of carbon nanofiber
technology in the… READ MORE
Quoted Instructions for "Use of Emerging Technology" Assignment:
Assignment in following description:
1. Choose an area of emerging technology---NANOMATERIALS & CARBON NANOTUBES
2. Succinctly but including an executive summary:
a) Forecast how this area of technology will develop in the next five years, supporting his work with the application of appropriate forecasting methods and data gathered from online or other research.
b) Critically assess what its development will mean for business and other organizational (e.g., public agency and non-profit organization) models that use this area of technology.
c) Decide whether technology leadership or followership is appropriate for the US Government in this area of technology.
3. Require at least 5 scholarly references.
How to Reference "Use of Emerging Technology" Thesis in a Bibliography
“Use of Emerging Technology.” A1-TermPaper.com, 2009, https://www.a1-termpaper.com/topics/essay/scientific-commercial-creative/917587. Accessed 29 Sep 2024.
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