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Sculpting....air
Aerogels are remarkable materials with
unprecedented
physical properties that
fascinate researchers and space engineers. They have incredible insulating
properties with regard to thermal, electrical
and acoustic energy transfers. After being used by NASA in various space
experiments to capture cosmic dust, aerogels became, for the first time, the object
of sculptural research. Dr. Iannis MICHALOU(di)S, Research Affiliate at the Center
for Advanced Visual Studies at MIT tells us the story.
>> More
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Toward
molecular design of oxide precursors for advanced materials
by Liliane G. Hubert-Pfalzgraf
Chemical
routes to materials are based on transformations in solution such as sol-gel
processing, hydro or solvo thermal syntheses, Metal Organic Decomposition
(MOD), or in the vapour phase chemical vapor deposition (CVD). Most chemical
routes rely on the availability of appropriate “metal-organic” molecules as
precursors. Among the various precursors of metal oxides
namely metal
b-diketonates and metal
carboxylates, metal alkoxides are the
most versatile. They are available for nearly all elements and
cost-effective synthesis from cheap feedstoks have been developed for some.
Professor Liliane G. Hubert-Pfalzgraf make the point. |
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Polyoxometalate-based
organic-inorganic hybrid materials
The paper summarizes and
reviews the current developments in the area of polyoxometalate (POM)-based
organic-inorganic hybrid materials including POM-based organic- or
organometallic-derived
hybrid materials, charge transfer (CT) salts and organic-inorganic composite films.
This review also
provides insight into the rational synthesis and potential applications of these hybrid
materials.
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Smart
Optical Materials by Sol-Gel Method
Professor Renata Reisfeld
and his research team from the Hebrew
University of Jerusalem have investigated for more than a
decade sol-gel derived optical materials. She give us today an
overview of a broad palette of such materials, investigated by
her group, and potentially useful for sensors, lasers,
solar energy concentrators, variable transmission windows, and
light amplifiers. |
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Glass from
Aerogels... 25 years ago
by Michel Prassas
25 years ago, glass scientists were intensively looking for low temperature
processing routes for making glass. The discovery that monolithic gels can
be transformed in glassy materials at half the conventional melting
temperature, became a useless reality with extraordinary implications. The
topic drained a great number of researchers from a variety of disciplines
and open the window of what commonly call today the sol-gel process.
An open and versatile chemical processing route to a variety of
inorganic and organic-inorganic materials with nanotailored structures and
properties. |
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What are hybrids
?
by Prof. Clement Sanchez
An incredible amount of
research investigations have appeared the last 10 years in the field of hybrids materials
indicating the growing interest of chemists, physicists and materials researchers to fully
exploit this technical opportunity for creating materials and device with benefits of the
best of the two worlds namely inorganic and organic... |
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Wet
Coating Technologies for Glass
by
H. Schmidt and M. Mennig
One advantage of wet coating techniques is, that molecular structures developed by chemical synthesis can be used to develop new
properties, or to develop new
desired molecular structures by heat-treatment and subsequent chemical reaction on the
surface. After introducing the advantages of wet coating technologies the
authors describe the different wet coating techniques including,
dip, spin silk screen, roll coating, laminar flow... |
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COATINGS:
An Introduction to the cleaning procedures
by Dr W. Birch |
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Ultraviolet
- ozone cleaning of semiconductor surfaces
by John Vig 45 pages, 175 references. (pdf file 3Mo)
Chapter 6 of "Handbook of semiconductor wafer cleaning technology. Science,
Technology & Applications" Ed; by W; Kern, Noyes Publications, 1993
Copyright notice
"Although the book in which this chapter appears is
copyrighted, the author is an employee of the U.S.
Government and performed this work as part of his official
duties. The work is, therefore, not subject to copyright
protection by the publisher." |
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SOL-GEL:
A low temperature process for materials of the new millennium
by Prof. J. Phalippou |
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Vanadium
dioxide as infrared active coating
by G.
Guzman |
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YVO4:Ln
(Ln= Eu, Nd) luminescent
nanoparticles
by Arnaud Huignard, Thierry Gacoin and Jean-Pierre Boilot |
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Optical anisotropy of silica gels doped with
magnetic nanoparticles
by
D. Jamon, J. J. Rousseau, H. Roux, V. Cabuil
Magnetic nanoparticles
orientation can be fixed if the gels are prepared under magnetic
field. Permanent birefringent optical plates can easily be prepared
this way with tailored properties.
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Rare -earth doped
transparent nanoparticulate glass-ceramics
by M.
Mortier, M. Génotelle, G. Patriarche |
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Optical properties of self assembled metallic nanoparticles: Study
at the microscopic scale (in
French) (ppt slides)
by
Fabien Silly, Alexander O. Gusev, Abdelhafed Taleb, Fabrice Charra,
Marie-Paule Pileni |
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Amplification of the 3rd order
optical non- linearities of metallic nanoparticles
(in
French) (ppt slides)
by
N. Pinçon, B. Palpant, D. Prot, E. Charron, C. Sella, S. Debrus |
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Nanocrystalline
electrochromic device
by Dr. Pierre Bonhote (EPL)
A short illustrated description of how
electrochromic devices based on molecular monolayers
anchored on a semiconductor surface works. |
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Dye
Sensitized Solar Cells (DYSC)
based on Nanocrystalline Oxide Semiconductor Films
made by sol-gel
from the Laboratory for Photonics and Interfaces,
Swiss Federal Institute of Technology |
