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Nanotechweb

 •  October 19, 2012

Carbon nanotube(CNT)/polymer composites offer a range of useful properties such as high strength, electrical and thermal conductivity, and a low coefficient of thermal expansion, but these properties are strongly dependent on the spatial distribution and orientation of CNTs in the polymer matrix. Capturing this information would help developers to ...

Nanotechweb

 •  July 27, 2012

Using a simple air-assisted fabrication process, researchers from the Small Systems Laboratory at the University of Louisville, US, have demonstrated large, position-dependent, near-infrared (NIR)-induced photocurrents in single layer graphene (SLG) assemblies. Position-dependent photocurrents exhibited an increase when the positive electrode was ...

Nanotechweb

 •  June 26, 2012

Monitoring phase transitions in nanoscale polymer structures can be challenging and most of the techniques used so far are either time consuming or tedious. In a recent study, researchers in the US have shown that noble metal nanoparticles could help to overcome these issues.
Using a simple UV-vis extinction spectrometer, the scientists recorded ...

Nanotechweb

 •  June 21, 2012

Technology update
A new type of hydrogel could make for high-performance energy-storage electrodes and biosensors. So say researchers at Stanford University in the US who have developed a porous nanostructured material based on the conducting polymer polyaniline that has excellent electronic and electrochemical properties.
"Our material combines ...

Nanotechweb

 •  March 14, 2012

Researchers at the Seoul National University and Gwangju Institute of science and technology, Korea, have fabricated organic memory devices that feature multilayer graphene film sandwiched between insulating polyimide layers. The array-type structures showed write-once-read-many (WORM) type memory characteristics, with the embedded multilayer ...

Nanotechweb

 •  May 27, 2011

Technology update
"Electric glue" can be used to reversibly stick polymers to the surface of an electrode to create nanoscale devices that can be switched on and off using a current. Researchers recently showed that DNA (a biopolymer) can be reversibly bonded to a gold electrode by varying the electric potential of the electrode surface. Now, a ...