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Introduction
Nanotechnology a term coined by K Eric Drexler in 1992
2
refers
to manipulation of matter (with at least one dimensional size) from
1 to over 100 nanometer size to create new properties. All materials
in nanoscale sizes are referred to as nanomaterials. They have quite
a large surface area to volume ratio. This single characteristic paves
way for new quantum mechanical effects and provides tremendous
driving force for diffusion at elevated temperature.
Types of carbon nanomaterials
There are two types of Carbon nanomaterials
Fullerenes: These are a class of allotropes of carbon which
conceptually are graphene sheets rolled into tubes or spheres. They
include carbon nanotubes or silicon nanotubes. They are of interest
because of their mechanical strength and electrical properties.
Common fullerenes include Bucky ball clusters (found in soot or
coal), Nanotubes or cylindrical fullerenes, Mega tubes, 2D and 3D
polymers and Nano-onions.
3
The transition of these materials is from
Fullerenes to Nanotubes and most recently to Graphenes.
4
Nanoparticles: These are inorganic nanomaterials. They are made
from metals, semiconductors and other particles that have great
chemical, physical, electrical and magnetic properties e.g Quantum
dots, Nanowires, Nanorods Clay nanoparticles, Titanium dioxide
nanoparticles, Zinc oxide nanoparticles, Nanoparticles of yellow gold
and Nanoparticles of gray Silicon.
4–6
Basically two kinds of Carbon
nanoparticles exists-nano diamond and Carbon onions.
Applications of nanotechnology
i. Fullerenes fnd application in the medical feld because of their
ability to bind certain types of anti-biotics to the structure of
resistant bacteria.
ii. Nanotubes have potential application in electrical industry.
iii. Mega tubes are mostly used in transport of variety of molecules
having different sizes.
5
iv. Nano-onions are proposed for lubricants.
v. Nanoparticles fnd its main application in production of
chemical catalysts.
vi. Nanoparticles also fnd application in thermal therapies
for Cancer.
7
Gold nanorods, Gold nano cages and Carbon
nanotubes are being tested in vitro and in vivo to target tumor
cells.
8
vii. Nanoparticles are used in biomedical applications as drug
carriers and imaging agents.
viii. Nanoparticles are used in optoelectronics.
6
ix. Nanoparticles have also been attached to textile fbres in order
to create smart and functional clothing.
9
x. Clay nanoparticles when incorporated into polymer matrices
increase reinforcement, leading to stronger plastics-
hardnoparticles.
9
xi. Liposomes {prototype semi-solid and soft nanoparticles} are
currently used clinically as drugs/vaccine delivery systems.
7
xii. Nanomaterials are employed in nuclear accident clean up.
xiii. Nanomaterials are also employed in reduction of energy
consumption
xiv. Consumer products: With nanoparticles in consumer products,
A. Car bumpers are made lighter.
B. Clothing is more stain repellent.
C. Sunscreen is more radiation resistant.
D. Synthetic bones are stronger.
E. Cell phone screens are lighter weight.
F. Glass packaging for drinks leads to longer shelf life.
G. Balls for various sports are made more durable.
Nanotechnology and biosensor research
Nanotechnology is having a profound effect on the development of
new biosensor. Biosensor comprise a biological molecule immobilized
into the surface of a signal transducer to give a solid state. Analytical
device. There are two major areas where nanotechnology has
drastically impacted on biosensor research in the last two years. One
is Nanofabrication of biosensing interface, two is application of new
materials to biosensoring.
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Int J Biosen Bioelectron. 2017;2(5):136‒139 136
© 2017 Ejeta et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which
permits unrestricted use, distribution, and build upon your work non-commercially.
Impact of nanotechnology in nigeria: a short survey
Volume 2 Issue 5 - 2017
Ejeta KO, Dolor GA, Ndubuka GI, Nkuma-
Udah KI, Azeez TO, Odugwu O
Federal University of Technology, Nigeria
Correspondence: Ejeta KO, Federal University of Technology,
PMB 1526 Owerri, Imo State, Nigeria, Tel +2348038795184,
Email koejeta@yahoo.co.uk
Received: December 26, 2016 | Published: May 15, 2017
Abstract
Nanotechnology, one of the foremost alternative modern technologies of the
twenty-first century offers enormous benefits and opportunities through synthesis,
characterization and fabrication of quite vast number of nanomaterial to solve societal
immediate problems. Structured questionnaires were administered to three different
industries in each of the six geo-political zones in Nigeria, a Country located in
West Africa bordering the gulf of Guinea, Niger and Chad (North), Benin (West) and
Cameroon (East) to determine the impact of nanotechnology. The data emanating
from this study were analyzed using multiple regression analysis, correlation analysis,
analysis of variance (ANOVA)
1
and likert 5 scales with T-test utilized in determining
levels of significance. The findings are reported and discussed.
Keywords: nanotechnology, impact, nanomaterials, societal problems
International Journal of Biosensors & Bioelectronics
Mini Review
Open Access