Sol-Gel

Under this section you will find links to the original articles and press releases from hand selected science and technology stories from various online sources.  

  July 2001

 

Lilliputian Laser: One-thousandth the diameter of a human hair
One of the smallest lasers ever made -- far too small to be seen even with the aid of the most powerful optical microscope -- has been successfully tested by a team of researchers with Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California at Berkeley
The world's lightest ceramic foam..
Developed by a team of scientists leaded by professor Gideon Grader from Technion the Israel Institute of Technology, the new ceramic foam contains 95 % of air enabling a remarkably low density and high acoustic, and thermal insulation.
Perfecting porosity
Some chemists worry plenty about nothing... Well, almost nothing. It's the holes inside solid materials that are on their minds.
by Jessica Gorman
Source: ScienceNews
High strength Aerogels
It's not much more than smoke. Yet the new material developed at the University of Oklahoma is no lightweight when it comes to strength. It is only half as dense as balsa wood. But you need a hammer to break it.
by Philip Ball
Source: Nature Sienceupdate
Sticking things to carbon nanotubes
Single-walled carbon nanotubes, for all their remarkable and promising properties, will never totally fulfill their potential until an effective way is found to manipulate and organize them into ordered arrays.
by Ron Dagani
Source : Chemical Engineering News
Quantum dots bar-code DNA
Microbead bar-codes make light work of screening biological molecules. Mingyong Han and colleagues embedded light-emitting nanocrystals known, as quantum dots, into tiny polymer beads. By tagging their microbeads onto strands of DNA, the researchers created a "chemical lab" that detects and analyzes DNA molecules.
Source: Optics.org
Tiny silicon wires to detect trace residues of explosives
Chemists at the university of California, San Diego have developed a silicon polymer "nanowire", some 2,000 times smaller than the diameter of a human hair, that is capable of detecting trace amounts of TNT and picric acid.
Source: University of California, San Diego
The MAX phases: Unique New Carbide and Nitride Materials
The materials form a new class of solids, the nanolaminates, which exhibits new physics along with unusual machinability
by M. Barsoum & T. El-Raghy
Source: American Scientist
Living array, speeds gene research
Cells do all the work in a novel biochip that might shorten the path to safer drugs. Microarrays of living cells could provide a shorcut to the development of safer drugs and a fuller understanding of the human genome.
by D. Cameron
Source: Technology Review
Closing in on the mystery of colossal magnetoresistance
Dan Dessau of the University of Colorado has worked with students and colleagues at the University of Tokyo and Berkeley Lab's Advanced Light Source to attack a recalcitrant puzzle in contemporary electronic theory: what can explain colossal magnetoresistance, or CMR?
by P Preuss
Source: Science beat Berkeley Lab
Intel Researchers Build World's Fastest Silicon Transistors
Transistors at 20 nanometers in size to enable billion-transistor microprocessors later this decade. This will allow Intel to build microprocessors running ar speeds approaching 20 Ghz and operating at less than one volt in approximately 2007.
Source: Intel press releases
Holographic memory
If you like music, you probably have a substantial collection of compact discs, but what if you were able to take them all and put them on something the size of a single CD ?
Source: stn²