August 6/13, 2007


A model cell

A computer model showing cell signaling pathways -- the ways cells respond to stimuli from each other and the environment -- shows that cells process information in the same way even though the same stimulus patterns produce different results in different types of cells. The model predicts how cells respond in specific conditions, which promises to improve medical diagnosis and drug development. (Common Effector Processing Mediates Cell-Specific Responses to Stimuli, Nature, August 2, 2007)

Levitating cells

Using sound waves to levitat tiny blood droplets for spectral analysis yields better signal-to-noise ratios than samples on slides or other containers. The technique's promise for diagnosing diseases was demonstrated by detecting malaria in infected cells. (Raman Acoustic Levitation Spectroscopy of Red Blood Cells and Plasmodium Falciparum Trophozoites, Lab on a Chip, published online August 3, 2007)

Polymers go long

A pair of advances in polymer chemistry make it easier to form nanoscale cylinders and chains. The minuscule structures could be used to deliver drugs, strengthen plastics and as templates for nanowires. (Cylindrical Block Copolymer Micelles and Co-Micelles of Controlled Length and Architecture, Block Copolymer Assembly via Kinetic Control, Science, August 3, 2007)

Nanowires on chips

A chemistry advance makes it possible to load minuscule amounts of metal in polymer chains on silicon chips, then remove the polymer to leave metal lines as narrow as 10 nanometers, which is the width of 100 hydrogen atoms. This is about nine times smaller than the circuits on today's computer chips. The technique provides a relatively simple chemical process for integrating nanotechnology with today's microelectronics. (Assembly of Aligned Linear Metallic Patterns on Silicon, Nature Nanotechnology, August 2007)

Heavy metal sponge

Highly porous semiconducting aerogels -- sponge-like solids -- soak up heavy metals. The materials could be used to remove toxic heavy metals like mercury from water. (Porous Semiconducting Gels and Aerogels from Chalcogenide Clusters, Science, July 27, 2007)

Quantum magnets

Scientists have found that strings of magnetic atoms as long as 20 nanometers can be quantum-mechanically linked even though they are not aligned magnetically. The finding improves the chances for making large-scale chip-based quantum computers, which are expected to be able to crack security codes. (Mesoscopic Phase Coherence in a Quantum Spin Fluid, Science, published online July 26, 2007)


View from the High Ground: ICL's John Pendry
Physics as machine tool, negative refractive index, metamaterials, shattered wine glasses, higher capacity DVDs, scientific backwaters, risk perception and practice, practice, practice.

How It Works: Quantum computing: qubits
Photons, electrons and atoms, oh my! These particles are the raw materials for qubits, the basic building blocks of quantum computers.

News RSS feed
Blog RSS feed
Bookshelf RSS feed

New: TRN's Internet Services
TRN's Jobs Center

July 10, 2007
Bipedal locusts
Looks like we're taking more than our share of the vegetables: human activities eat up nearly a quarter of the planet's plant growth...

July 2, 2007
Genome transplant

June 26, 2007
Springing ahead

June 18, 2007
Plants go with the climate flow


Ad links:

Buy an ad link

"Physics is to the rest of science what machine tools are to engineering. A corollary is that science places power in our hands which can be used for good or ill. Technology has been abused in this way throughout the ages from gunpowder to atomic bombs."
- John Pendry, Imperial College London

  Thanks to Kevin from
for technical support

     Archive     Gallery     Resources    TRN Finder     Bookshelf     Glossary

Research Directory     Events Directory      Researchers

Offline Publications     Feeds     Contribute      Under Development      T-shirts etc.      Classifieds

Comments     Feedback     About TRN     TRN Newswire and Headline Feeds for Web sites

© Copyright Technology Research News, LLC 2000-2008. All rights reserved.