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Materials Today, May 2003
-------------------------- This month's features -------------------------- The fabrication of materials and devices on the nanoscale may require a new approach"¦ * Shuguang Zhang of MIT is following nature's example and building materials from the bottom up. * Materials Today investigates the latest developments in extreme UV lithography and... view more... (2003-04-23)
Unique Quantum Effect Found in Silicon Nanocrystals
Researchers at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL), collaborating with Innovalight, Inc., have shown that a new and important effect called Multiple Exciton Generation (MEG) occurs efficiently in silicon nanocrystals. MEG results in the formation of more than one electron per absorbed photon. view more (2007-07-26)
Catching waves: Measuring self-assembly in action
By making careful observations of the growth of a layer of molecules as they gradually cover the surface of a small silicon rectangle, researchers from the National Institute of Standards and Technology (NIST) and North Carolina State University (NCSU) have gained basic insights into how self-propagating self-assembly wave fronts develop and have... view more... (2007-06-25)
Press Invitation: Imperial College Centre for Electronic Materials and Devices Open Day
The Centre was established in October 1997 and encompasses the research activities in electronic materials and devices which are currently being pursued in various departments of the College. view more (1999-04-18)
MIT 'optics on a chip' may revolutionize telecom, computing
In work that could lead to completely new devices, systems and applications in computing and telecommunications, MIT researchers are bringing the long-sought goal of "optics on a chip" one step closer to market. view more (2007-02-06)
UC Riverside physicists contribute to state-of-the-art detector installed in Switzerland
UC Riverside scientists led by Gail Hanson, a distinguished professor of physics, are part of a collaboration of approximately 2300 international physicists who announced Dec. 19 that the world's largest silicon tracking detector at CERN in Geneva, Switzerland, had been successfully installed. view more (2007-12-21)
Stanford innovation helps 'enlighten' silicon chips
Light can carry data at much higher rates than electricity, but it has always been too expensive and difficult to use light to transmit data among silicon chips in electronic devices. view more (2005-10-27)
New infrared tool measures silicon wafer thickness
In the last few years, semiconductor circuit features have shrunk to sub-100 nanometer (nm) dimensions, while the size of the thin silicon wafers that these circuits are constructed on has grown from 200 millimeters (mm) to 300 mm (about 12 inches). The payoff is a higher yield of finished devices from fewer wafers. view more (2005-07-15)
Beautiful diatoms: pattern for stable construction
AWI publication in 'Nature' Scientists from the Alfred Wegener Institute (AWI) published new results concerning the structure and material properties of diatoms in the science journal "Nature" on 20th february 2003 (Nature 421: 841-843). These single-celled marine algae are responsible for the majority of oxygen and biomass production in the... view more... (2003-02-21)
Solvents in Retreat
A new catalyst for selective solvent-free hydrogenation at low temperatures A number of cyclic hydrocarbons with multiple double bonds are readily accessible intermediates in chemical industry. In the course of further processing it is often necessary to saturate some of the double bonds with hydrogen to form single bonds. This type of reaction,... view more... (2001-03-27)
A giant step toward tiny functional nanowires
Carving a telephone pole is easy if you have the right tools, say a power saw and some large chisels. And with some much tinier tools you could even carve a design into a paper clip if you wanted to. But shrink your sights down to the nanoscale, to a nanowire that is 1,000 times smaller than the diameter of a paper clip, and you find there are no... view more... (2005-07-01)
Microscopic sea creatures provide foundation for gas sensors and other devices
The three-dimensional shells of tiny ocean creatures could provide the foundation for novel electronic devices, including gas sensors able to detect pollution faster and more efficiently than conventional devices. view more (2007-03-12)
Rolling wires
Rolls which shape metal strip and wire become worn over the course of time. Rolls made of silicon nitride are more durable than those made of steel. Research engineers conduct work on the measurement, simulation and optimization of sintering and rolling processes. Throughout the world, wire is not only produced by drawing, but in many cases it is... view more... (2002-03-05)
Nanopowder Consisting Of Identical Particles
High-quality nanopowders made of refractory ceramics are a rare and very expensive material. All known methods of their manufacturing face the same problems - scanty quantities, extensive variety of particle sizes and expensive production. Researchers from the town of Tomsk have invented and manufactured a device to produce a choice selection of... view more... (2004-03-26)
Titania nanotubes create potentially efficient solar cells
A solar cell, made of titania nanotubes and natural dye, may be the answer to making solar electricity production cost-effective, according to a Penn State researcher. view more (2006-02-08)
A QUIET DRILL
The household and industrial heaters as well as glass and metal annealing furnaces are made of ordinary ceramics stand temperature difference poorly - the furnaces would crack as an common facetted glass where fiercely boiling water was pored in. That is why the annealing furnaces have to be heated and cooled gradually and insensibly. It takes... view more... (2003-04-25)
Study may expand applied benefits of super-hard ceramics
A discovery reported in the August 5 issue of Science could speed the design of materials that approach the hardness of diamond yet remain supple enough to be worked like metal. view more (2005-08-05)
A new technique for curing blindness, squeezing a thousand DVDs into a matchbox and finding the missing link in optoelectronics – all covered in the January/February issue of Opto and Laser Europe
CURING BLINDNESS Age related macular degeneration (ARMD) is the principal cause of blindness for patients over 50 in the developed world. A new drug has recently been given approval for use in photodynamic therapy to treat this condition in Europe and the US. Photodynamic therapy, where a combination of injected drugs are stimulated by laser... view more... (2001-01-18)
Nose-on-a-chip Aims To Mimic The Real Thing
An ambitious project is underway to build the world's smallest electronic nose. If the project succeeds, it is expected that the technology would have many potential applications in areas such as environmental monitoring, healthcare and food safety. The aim is to combine the odour sensors together with the signal processing components on to a... view more... (2002-03-04)
MIT develops 'tractor beam' for cells, more
In a feat that seems like something out of a microscopic version of Star Trek, MIT researchers have found a way to use a "tractor beam" of light to pick up, hold, and move around individual cells and other objects on the surface of a microchip. view more (2007-10-31)
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