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Nanomaterials … Smaller
and Better |
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Michael Wijaranakula
Staff Researcher, Infotix
Systems, Inc. - June 23, 2004
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Nanomaterials, the newest term in technology today, has the greatest potential for the future with companies
like BASF (NYSE ADR: BF), Dow Chemical (NYSE : DOW), Eli Lilly
(NYSE:
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LLY) and IBM (NYSE ADR: IBM) creating new
products from cosmetics and adhesive coatings to
nanoelectronics. The commercial development of nanomaterials, however, and their integration into new products, depends on cost, reliability, quality, and whether they can be mass produced.
According to
The Freedonia Group, Inc., a Cleveland, OH-based
economics and industrial research firm, the US
nanomaterials market alone will surpass $1 billion in
2007, driven by the development of basic nanomaterials
such as metal oxides, nanotubes and particles.
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| Size Matters: Zinc oxide
(ZnO), which is used in products ranging from UV absorption coatings and cosmetics to anti-bacterial additives and
adhesives, is typically manufactured by the French process
where zinc metal
is vaporized and then oxidized.
This method
can produce ZnO particles with average sizes of 700nm
or less.
A microfine zinc oxide or Z-COTE®
process, which is developed and patented by BASF, is
capable of manufacturing ZnO particles smaller than
200nm in diameter. Because of their size and transparency,
sunscreens and cosmetic products which use Z-COTE®
microfine ZnO particles can provide superior UV protection
over those using larger ZnO particles.
ZnO nanoparticles, with particle sizes less than 100nm, are
commercially produced using a Physical Vapor Synthesis (PVS)
process developed
by Romeoville, IL-based Nanophase
Technologies Corporation (NASDAQ: NANX). Based upon the
same principles as the
French process, a solid Zn precursor is first
vaporized
using arc energy. An oxygen reactant gas is then
added to the Zn vapor to form an oxide, which is then
cooled at a controlled rate and condenses.
This process
produces ZnO nanoparticles with average sizes ranging
from 8-75 nm. According to EDGAR Financials,
Nanophase Technologies generated a revenue of $5.08
million last year from sales of nanocyrstal materials
and other products including advanced ceramics and
coating materials.
Applied Nanoworks Inc, based in Watervliet, NY, announced their latest product this past April, PinnacleAF Zinc Oxide powder nano-colloid, the first in their line of nanomaterials available on a commercial scale in water suspension. PinnacleAF, with a size of 2-6 nm, is 80% smaller than other zinc oxide nano-powders that range from 15-20 nm.
According to Applied
Nanoworks, their new product also
offers an approximate 400% improvement in UV absorption levels
and an estimated 500% increase in particle surface area which should enhance performance in industries where a larger surface area may be desirable to react with other chemicals.
Smaller Is Beautiful: Since early 1980, nanocrystallites
made from semiconductor materials such as cadmium
selenide (CdSe) have been found to absorb white light
and then re-emit it in a specific color. "Quantum
dots are emerging as the most viable semiconductor
nanotechnology for future higher performance
communication systems, biomedical imaging, environmental
sensors, and infrared detection," said Dr. Anupam
Madhukar, Professor of the USC Viterbi School of
Engineering. Founded in 1998, Hayward, CA-based Quantum Dot Corporation
(QDC), is a nanotechnology company which develops products for biomolecular detection which employ nanometer-sized quantum dot
particles, called Qdot®. The
company offers a
conjugation (chemical
joining) kit
designed to allow its customer's biomolecules
such as antibodies, proteins or biotin to conjugate to its Qdots.
Quantum Dot's nanocrystal fluorophores are sold to biopharmaceutical and academic
laboratories for life science research utilizing fluorescence
microscopy,
biochemical and cellular assays, and gene chip analysis. Advantages of this new nanometer
quantum dot technology in biomolecular detection include extreme brightness for applications requiring high sensitivity.
Quantum Dot currently has over $37.5 million from venture groups and has multiple patents and patents pending.
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Bio-Nanomaterials: With
a goal of reducing the unpleasant side effects for patients
that are associated with current treatments and drug doses, research
scientists are now working on novel cancer therapy
treatments and drug delivery methods to
diseased cells using
magnetically guided biodegradable nanospheres.
Triton BioSystems, Inc. (TBS) a Chelmsford, MA-based company, develops non-invasive targeted therapeutics that use heat to treat late-stage breast, lung, colon, pancreatic and prostate cancers. The TBS Targeted
Nano-Therapeutics™ (TNT™) System is an injectable product that uses nanoscale magnetic spheres made of a special formulated material that when activated, cause cancer cell death with very localized lethal heat. The heat is generated only in the magnetic
nanospheres during the application of external magnetic energy. Since the spheres are so small, the heating is very local and does not harm the healthy vital tissues or organs nearby,
unlike chemotherapy or radiation. In late 2002, TBS merged with Thermonix Inc, so that combined, the two companies can further their product development effort. The company is in pre-clinical development
and in 2006, is anticipated to begin human clinical trials.
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About
NMS Research Analysis:
NMS Research Analysis is a service of Infotix Systems, offering
in-depth research analysis of high-tech companies and emerging
technology in sectors ranging from semiconductors, biotech,
nanotechnology, IT hardware and data storage to wireless, Internet
and consumer electronics.
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