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Chemistry World September 18, 2012 Harriet Brewerton |
Colorful metal detection Scientists in China have developed a sensor that can indicate the presence of heavy metal ions in a sample with a simple color change by using aptamers. Aptamers are single-stranded DNA or RNA molecules.  |
Chemistry World June 19, 2009 Jon Cartwright |
Nanoparticles make 'self-erasing' images Materials displaying 'self-erasing' color images have been created by chemists in the US, who have studied how certain nanoparticles can assemble and disassemble themselves under different wavelengths of light.  |
Technology Research News September 24, 2003 |
Artificial DNA stacks metal atoms In recent years, researchers have replaced some of DNA's natural bases with those that attach to metal atoms in order to coax DNA to organize metal ions into tiny structures. Researchers in Japan have tapped the method to form stacks of single metal ions.  |
Chemistry World June 7, 2012 Yuandi Li |
'Litmus paper' for food spoilage Scientists in the US have developed a cheap fluorescent sensor for food spoilage that could be as easy to use as litmus paper.  |
Chemistry World May 6, 2009 Nina Notman |
Polymers feel the force A new way to make force-sensitive polymers that respond to stress by changing colour has been designed by a multidisciplinary team in the US.  |
Chemistry World June 20, 2014 Susannah May |
A real red alert for explosives Scientists in Spain have developed a new material that changes color around TNT. The chemical, which could be used to make intelligent clothing, alerts users to the presence of the explosive.  |
Chemistry World July 22, 2014 Charlie Quigg |
Polymer changes color in the heat of the moment Scientists in China, the UK and the Netherlands have engineered a polydiacetylene polymer that reversibly changes color within 1 second of being heated or cooled.  |
Chemistry World February 11, 2011 David Barden |
Waking up to new possibilities in imaging UK researchers have used a cage-like molecule to smuggle metal ions into cells, which could improve medical imaging.  |
Chemistry World July 9, 2013 Jennifer Newton |
Technicolor pKa indicator Scientists in Japan have shown that a dye can present more than five different colors according to the acidity of the solution it is in and can be used to visualize acid -- base equilibria in non-polar solvents.  |
Chemistry World August 2006 David Walt |
Comment: Common Sense for Sensors Designing sensors for manufacturability must be performed at the outset rather than as an afterthought. Only when we develop such reproducible sensors will they become pervasive tools for improving our quality of life.  |
Chemistry World October 22, 2007 Simon Hadlington |
A Swell Idea? US researchers have developed a new polymer-based gel that can rapidly change color in response to a range of triggers, including temperature, humidity and salt concentration.  |
Chemistry World December 7, 2011 Anne Horan |
Catalyst clears up corrosion UK scientists have developed a cheap way of cleaning tarnished metals in industry to prevent corrosion using a UV activated photocatalyst ink. The dirty surface can then simply be washed away with water.  |
Chemistry World October 15, 2014 Andy Extance |
Fluorescent DNA becomes versatile metal detector Researchers at Stanford University in the US have devised a cheap DNA-based system able to detect and identify an unprecedented number of metals in water.  |
Chemistry World November 30, 2009 Lewis Brindley |
Colour change test for arsenic US researchers have developed a test to quickly and accurately measure arsenic levels in drinking water down to very low concentrations.  |
Chemistry World July 4, 2013 Simon Hadlington |
Why is silver deposition so fast? Researchers appear to have solved one of electrochemistry's more baffling mysteries: why it is that metal ions deposit onto an electrode at an apparently unfeasibly fast rate.  |
Chemistry World June 14, 2013 Michael Parkin |
Plumage pattern revealed in 150 million-year-old bird An international team of scientists has used synchrotron-based imaging techniques to chemically map the feather colors of a 150 million-year-old bird. The study reveals that the dinosaur had feathers which were light in colour with a dark edge and tip, rather than all black as previously thought.  |
Chemistry World August 23, 2012 Yuandi Li |
Reversible photoswitch a boost for molecular electronics A team of international scientists has made a photocontrollable device, which, they say, shows potential for application in nanocircuits and helps the understanding of electrical conduction in molecular electronics.  |
Chemistry World January 24, 2014 Simon Hadlington |
New biosensor inspired by turkeys Researchers in the US have invented a sensor that changes color in response to its environment using a similar mechanism to that which operates in many animals.  |
Chemistry World October 16, 2009 Lewis Brindley |
Colorful polymers on demand Electrochromic compounds are those which can change color in response to electrical signals, but they have previously come with a high price tag and slim range of available colours.  |
IEEE Spectrum March 2006 J. R. Minkel |
Quantum Leap For Quantum Computing The most promising technology for constructing an ultrapowerful quantum computer is the ion trap, a nest of electrodes that holds ions in midair. Researchers have now built the first such ion-trap chips.  |
Scientific American September 19, 2005 Steven Ashley |
Silicon Sniffer Engineers have developed a button-size chemical sensor prototype that is designed, among other things, to detect trace amounts of explosives before they detonate.  |
IEEE Spectrum April 2006 Brian Betts |
Smart Sensors A single moment of human error can make a sensor and all the data it gathers worse than worthless. A new standard for analog sensors could save lives and money.  |
Chemistry World August 21, 2015 Harriet Brewerton |
Paper device tracks fracking pollution Scientists in the US have developed a simple paper-based sensor for detecting bromide ions in water. The device could be used to check if fracking fluids have seeped into water supplies.  |
Chemistry World August 3, 2011 Simon Hadlington |
Liquid Crystals Rearrange to Glow in Three Colours Chemists in Japan have created a luminescent liquid crystal that can switch between three different colours when stimulated with heat and mechanical force.  |
Chemistry World January 9, 2014 Tim Wogan |
Disorder opens up battery material field Better lithium-ion batteries that hold more power could be made by introducing disorder into their electrodes -- going against the prevailing wisdom on the best way to improve them.  |
Technology Research News January 29, 2003 Kimberly Patch |
Tiny hole guides atoms against tide Researchers in Poland have made a synthetic device that uses an electrical field and an extremely small, conical pore in a thin film of material to coax potassium ions through the artificial membrane against their electrochemical potential.  |