Kingdom Enters Nanotechnology Quest

Prince Muqrin: Dedicated people make universities greatRIYADH: Prince Muqrin Bin Abdul Aziz, chief of General Intelligence, launched the King Abdullah Institute for Nanotechnology in Riyadh’s Techno Valley, on behalf of King Abdullah, Sunday. Prince Muqrin said that people are what make universities “great.” “However beautiful the buildings are and however advanced the equipment is, universities […]

How have NGOs responded to nanomaterials’ potential toxic effects?

Many non-governmental organizations have reacted against the rapid introduction of nanomaterials in the market. They ask questions about potential toxic effects and advise authorities to apply new approaches Non-governmental organizations around the world share concern for finding nanomaterials with potential harmful effects in stores. Research shows different nanomaterials cause injures to animal models and it […]

TiO2 Nanoparticles in the Environment

Products coated in titanium dioxide nanoparticles (nTiO₂) shine pure white. So since the 1990s manufacturers have added the chemicals to a wide range of consumer products, such as cosmetics, paints, sunscreens, and even foods. Now nTiO₂ often discharges into open waterways through treated sewage effluent. A new study reports that this nanomaterial can stress photosynthetic […]

Study investigates chemically or biologically triggered ultrafast optical nanoswitches

An ultrafast optical nanoswitch that can be triggered chemically or biologically has been introduced by researchers in the US. The switch consists of one semiconductor quantum dot placed in the vicinity of a metallic nanoparticle. Its main task is to convert ultra-small variations in the refractive index of the environment, caused by chemical or biological […]

Superspin blocking temperatures of model system lower than previously thought

It has long been believed that the magnetic moments of fine superparamagnetic Mn3O4 nanoparticles block just a few degrees below this material’s Néel temperature. Researchers from the University of Texas at El Paso disagree. Using ac magnetic susceptibility methods, the team has recorded data that unambiguously demonstrate the non-dynamic character of the magnetic behaviour in […]

Real-time monitoring of angstrom-scale surface roughness

Many studies have reported surface roughness measurements using contact methods such as atomic force microscopy (AFM). However, although this approach can determine surface roughness with sub-nanometer resolution, it is a time-consuming process. Now, a simple non-contact method, based on the detection of scattered light intensity during near-field etching, has been revealed that provides in situ […]

Graphene makes ‘supercapacitor’

Researchers in the US have made the first high-frequency AC “supercapacitors” containing graphene electrodes. The devices, which are much smaller than conventional capacitors, could be used in applications like computer processing units and other tiny integrated circuits. Capacitors are devices that store electric charge. “Supercapacitors”, more accurately known as electric double-layer capacitors (DLCs) or electrochemical […]

Nano pioneers give food for thought

This week I was at the scientific opening of the Centre for Nanoscience and Quantum Information (NSQI) at the University of Bristol. The event coincided with the Bristol Nanoscience Symposium 2010, and featured great talks from some of the pioneers of nanoscience and nanotechnology. Officially open: Centre for Nanoscience and Quantum Information At the opening […]

Graphene oxide absorbs IR radiation

Reduced graphene oxide can strongly absorb infrared radiation according to new work by researchers in Dallas and New Jersey. The unexpected result might lead to a wide variety of high-performance nanoelectronics applications in the future, such as electron emitters, bandpass filters, thermal-infrared sensors for night vision and solar absorbers for harvesting sunlight. Graphene is a […]

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