July 9/16, 2007


Magnetic color

Electronic ink could one day be made of rust. The spacing of microscopic iron oxide particles in liquid can be controlled by magnetic fields, which makes it possible to change the liquid to any color. The magnetic electronic ink could be used to make inexpensive displays and electronic paper. (Highly Tunable Superparamagnetic Colloidal Photonic Crystals, Angewandte Chemie International Edition, published online July 3, 2007)

Light-speed disks

Magnetic bits can be written by ultrafast pulses of circularly-polarized laser light, which opens a route to faster data storage devices. The circular polarization produces a magnetic field that sets a bit; the direction of the light's rotation determines whether the bit is a 1 or 0. (All-Optical Magnetic Recording with Circularly Polarized Light, Physical Review Letters, June 2007)

Sunny nanotubes

Vertically arranged nanotubes consisting of titanium, oxygen and varying amounts of iron are photoelectrochemically active across a wide range of the solar spectrum. The nanotubes could be used to extract hydrogen from water using sunlight. (Vertically Oriented Ti-Fe-O Nanotube Array Films: Toward a Useful Material Architecture for Solar Spectrum Water Photoelectrolysis, Nano Letters, published online July 3, 2007)

Nano flashlight

A color-tunable visible light source made from individual potassium niobate nanowires makes it possible to image objects that are too small to be seen with optical microscopes. The nanowire light could be used to probe the insides of living cells, as well as enable tiny optical communications devices. (Tunable Nanowire Nonlinear Optical Probe, Nature, June 28, 2007)

Single cell sensor

Researchers have found that placing a living cell just above a transistor provides a way to measure the amount of ions flowing into the cell. The technique could be used to test drugs, detect toxins and diagnose diseases. (Recombinant Serotonin Receptor on a Transistor as a Prototype for Cell-Based Biosensors, Angewandte Chemie International Edition, published online June 19, 2007)

Jumbled circuits

Computer chips of the future could be made from inexpensive jumbles of nanotubes or nanowires. A study of irregular networks shows that such chips are physically plausible and provide a better balance of performance and cost-effectiveness than similar networks-on-chips with highly-organized components. (Nature-Inspired Interconnects for Self-Assembled Large-Scale Network-On-Chip Designs, Chaos: An Interdisciplinary Journal of Nonlinear Science, June 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.