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254 Current news about the topic carbon nanotubes

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Creative use of noise brings bio-inspired electronic improvement

27-Sep-2017

In conventional electronics, a great deal of effort is devoted to eliminating stochastic resonance (SR) -- the annoying hiss that generally hinders the detection of weak signals and degrades overall device performance. But, what if there were a way to exploit this effect to enhance signal ...

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How To Draw Electricity from the Bloodstream

A one-dimensional fluidic nanogenerator with a high power-conversion efficiency

11-Sep-2017

Men build dams and huge turbines to turn the energy of waterfalls and tides into electricity. To produce hydropower on a much smaller scale, Chinese scientists have now developed a lightweight power generator based on carbon nanotube fibers suitable to convert even the energy of flowing blood in ...

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Safer carbon nanomaterials, by design

08-Sep-2017

Carbon nanomaterials (CNMs) are a class of engineered nanomaterials that can be used for many environmental applications, including water treatment and contaminant sensing and remediation. While they are prized for their ability to detect, remove, or degrade contaminants in the environment, CNMs ...

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Outperforming nature's water filtration ability with nanotubes

29-Aug-2017

At just the right size, carbon nanotubes can filter water with better efficiency than biological proteins, a new study reveals. The results could pave the way to new water filtration systems, at a time when demands for fresh water pose a global threat to sustainable development. A class of ...

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Heavy metals in water meet their match

28-Jul-2017

Carbon nanotubes immobilized in a tuft of quartz fiber have the power to remove toxic heavy metals from water, according to researchers at Rice University. Prize-winning filters produced in the lab of Rice chemist Andrew Barron by then-high school student and lead author Perry Alagappan absorb ...

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Clean water that's 'just right' with Sandia sensor solution

13-Jul-2017

Water utilities have a Goldilocks problem: If they don't add enough chlorine, nasty bacteria that cause typhoid and cholera survive the purification process. Too much chlorine produces disinfection byproducts such as chloroform, which increase cancer risks. The amount of chlorine needs to be ...

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Signature analysis of single molecules using their noise signals

13-Jul-2017

Noise is low-frequency random fluctuation that occurs in many systems, including electronics, environments, and organisms. Noise can obscure signals, so it is often removed from electronics and radio transmissions. The origin of noise in nanoscale electronics is currently of much interest, and ...

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Graphene transistor could mean computers that are 1,000 times faster

15-Jun-2017

A University of Central Florida professor is part of a research team that developed a graphene-based transistor that could someday lead to computers that are a thousand times faster and use a hundredth of the power. Ryan M. Gelfand, an assistant professor in CREOL, The College of Optics & ...

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Novel method to study quantum fluctuations in exotic phases of matter

01-Jun-2017

We encounter phase transitions in our everyday lives when we witness water freezing or boiling. Similarly, quantum systems at a temperature of absolute zero also experience phase transitions. The pressure or magnetic field applied to such systems can be adjusted so that these systems arrive at a ...

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Squeezing every drop of fresh water from waste brine

31-May-2017

Engineers at the University of California, Riverside have developed a new way to recover almost 100 percent of the water from highly concentrated salt solutions. The system will alleviate water shortages in arid regions and reduce concerns surrounding high salinity brine disposal, such as ...

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