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Are current water treatment methods sufficient to remove harmful engineered nanoparticle?

Nanotech-Now - March 11, 2015 - 7:45am
The increased use of engineered nanoparticles (ENMs) in commercial and industrial applications is raising concern over the environmental and health effects of nanoparticles released into the water sup...
Categories: Nanotechnology News

More study needed to clarify impact of cellulose nanocrystals on health: Few studies explore toxicity of cellulose nanocrystals

Nanotech-Now - March 11, 2015 - 7:45am
Are cellulose nanocrystals harmful to human health? The answer might depend on the route of exposure, according to a review of the literature by a Virginia Tech scientist, but there have been few stud...
Categories: Nanotechnology News

Seeing tiny twins: Strength in shrinking: Understanding why a material's behavior changes as it gets smaller

Nanotech-Now - March 11, 2015 - 7:45am
To fully understand how nanomaterials behave, one must also understand the atomic-scale deformation mechanisms that determine their structure and, therefore, their strength and function.
Categories: Nanotechnology News

ORNL microscopy directly images problematic lithium dendrites in batteries

Nanotech-Now - March 9, 2015 - 7:45am
Scientists at the Department of Energy's Oak Ridge National Laboratory have captured the first real-time nanoscale images of lithium dendrite structures known to degrade lithium-ion batteries. The ORN...
Categories: Nanotechnology News

The Universitat Politècnica de València is coordinating a European project to develop a device for the quick and early diagnosis of cancer

Nanotech-Now - March 9, 2015 - 7:45am
To develop a device based on nanophotonic technology that enables a quick and early diagnosis of different types of cancer -specifically breast, prostate, lung and colorectal- analysing only two or th...
Categories: Nanotechnology News

University of Tehran to Host 5th Ultrafine Grained, Nanostructured Materials Conference

Nanotech-Now - March 9, 2015 - 7:45am
The Department of Metallurgy and Materials Engineering of University of Tehran in association with University of Trento, Italy, will organize the Fifth Ultrafine Grained and Nanostructured Materials C...
Categories: Nanotechnology News

Iranian Scientists Apply Nanotechnology to Produce Electrical Insulator

Nanotech-Now - March 9, 2015 - 7:45am
Iranian researchers used nanotechnology to produce a new type of electrical insulator with high dielectric constant, which has applications in electronics, optoelectronics and electrochemical industri...
Categories: Nanotechnology News

Phenom-World announces the Phenom XL, world’s fastest desktop SEM to handle large samples

Nanotech-Now - March 9, 2015 - 7:45am
Phenom-World is proud to announce the Phenom XL, an addition to the highly successful Phenom desktop SEM product family. The Phenom XL is the world's first desktop Scanning Electron Microscope (SEM) t...
Categories: Nanotechnology News

Air Bearing Stage / Systems Introduced by PI at Photonics West

Nanotech-Now - March 9, 2015 - 7:45am
Precision motion leader PI (Physik Instrumente) has introduced their new air bearing stage and system capabilities at this year's Photonics West conference, to complement their comprehensive range of...
Categories: Nanotechnology News

Consistent Scalable Functionalised Graphene Capacity

Nanotech-Now - March 9, 2015 - 7:45am
Haydale Ltd., a technological leader in the development of functionalised graphenes to improve the mechanical performance of epoxy resin systems and Carbon Fibre reinforced plastics, has announced fur...
Categories: Nanotechnology News

French Institutes IRT Nanoelec and CMP Team up to Offer World’s First Service for Post-process 3D Technologies on Multi-Project-Wafer

Nanotech-Now - March 9, 2015 - 7:45am
New platform provides access to 3D technologies after regular CMOS MPW runs and allows SMEs, research institutes, systems integrators and universities to divide costs.
Categories: Nanotechnology News

The George Washington University Opens Science and Engineering Hall, Largest Building of Its Kind in D.C.: Building Represents Significant Investment in Research Programs and Facilities; Commitment to Solve Global Problems, Improve Lives of Millions

Nanotech-Now - March 9, 2015 - 7:45am
The George Washington University on Wednesday formally opened its new Science and Engineering Hall (SEH), a $275 million, 500,000-square-foot building with state-of-the-art research facilities and pro...
Categories: Nanotechnology News

Flexible phosphorene FET is a first

Nanotechweb - March 9, 2015 - 5:54am
New device has record carrier mobilities.
Categories: Nanotechnology News

Anousheh Ansari Wins the National Space Society's Space Pioneer Award for "Service to the Space Community"

Nanotech-Now - March 7, 2015 - 7:45am
The National Space Society announces that serial entrepreneur Anousheh Ansari is the winner of its 2015 Space Pioneer Award for "Service to the Space Community." This award will be presented at the Na...
Categories: Nanotechnology News

Enhanced Graphene Components for Next Generation Racing Yacht

Nanotech-Now - March 7, 2015 - 7:45am
Haydale, a leader in the development of enhanced graphene materials, has announced an intention to enter a collaborative agreement with Alex Thomson Racing ("ATR") the HUGO BOSS sponsored extreme sai...
Categories: Nanotechnology News

Medical nanoparticles: Local treatment of lung cancer

Nanotech-Now - March 7, 2015 - 7:45am
Nanoparticles are extremely small particles that can be modified for a variety of uses in the medical field. For example, nanoparticles can be engineered to be able to transport medicines specifically...
Categories: Nanotechnology News

Get ready for NanoDays!

Nanotech-Now - March 7, 2015 - 7:45am
At the end of this month, hundreds of museums, science centers, and university research centers across the United States will be hosting events to help children and adults explore the tiny world of at...
Categories: Nanotechnology News

Correcting quantum errors in superconducting circuits

Nanotechweb - March 6, 2015 - 5:07am
Repetitive error detection technique could help make robust qubits for future quantum computers.
Categories: Nanotechnology News

Lower Cost, Roll-to-Roll Production of Carbon Nanotube Based Supercapacitors

National Nanomanufacturing Network - March 5, 2015 - 8:03am
Ultra- or supercapacitors are emerging as a key enabling storage technology for use in fuel-efficient transport as well as in renewable energy systems (for instance as power grid buffer). These devices combine the advantages of conventional capacitors – they can rapidly deliver high current densities on demand – and batteries – they can store a large amount of electrical energy. Supercapacitors offer an alternative source of energy to replace rechargeable batteries for various applications, such as power tools, mobile electronics, and electric vehicles. Although the energy density of capacitors is quite low compared to batteries, their power density is much higher, allowing them to provide bursts of electric energy that for instance can help electric cars to accelerate at comparable or better rates than traditional petrol-only engine vehicles, while achieving a significantly reduced fuel consumption (read more about supercapacitors and other nanotechnologies to mitigate global warming (http://www.nanowerk.com/spotlight/spotid=16126.php) ). "Among the various types of supercapacitors, carbon nanotube (CNT) based devices have shown an order of magnitude higher performance in terms of energy and power densities," Ramakrishna Podila (http://people.clemson.edu/~ramakrp/Welcome.html) , an Assistant Professor in the Department of Physics and Astronomy at Clemson University, tells Nanowerk. "The bottleneck for transferring this technology to the marketplace, however, is the lack of efficient and scalable nanomanufacturing methods." Reporting their findings in Applied Physics Letters ("Roll-to-roll production of spray coated N-doped carbon nanotube electrodes for supercapacitors (http://dx.doi.org/doi:10.1063/1.4905153) "), Podila's team at Clemson University, in collaboration with Professor Apparao Rao's lab (http://www.raonanolab.net/) , has now developed a new scalable method to to directly spraycoat CNT-based supercapacitor electrodes. "Much like painting a car or a wall in your home, we can spray CNT solutions on flexible electrodes, porous aluminum foils in our case, to achieve high energy density supercapacitor electrodes without the need of any binder," explains Podila. The resulting supercapacitors have a 10 times higher energy density compared to the state-of-the-art supercapacitors on the market. Theoretically, CNTs offer an ultra-high surface area; in practice, though, the net capacitance of the CNT electrodes is smaller than the predicted values – based on surface area – due to the presence of a so-called small quantum capacitance in series. In this work, the Clemson researchers together with Cornell Dubilier, Inc (a leading capacitor manufacturer in Liberty, SC) and Sai Global Technolgies (a newly founded manufacturer of tailored nanomaterials in San Antonio, TX), have demonstrated that nitrogen doped CNTs electrodes overcome the quantum capacitance limitations and exhibit high power density along with high energy density on par with thin film Li-ion batteries. "The quantum capacitance must be increased, ideally to infinity, for realizing the true potential of nanocarbons in energy storage," remarks Rao, who is director of the Clemson Nanomaterials Center. "Heteroatomic doping, which has been a valuable tool in the semiconductor industry, can provide a solution," adds Podila. "Here we showed that doping provides a handle to control the energy states where electrons could reside in supercapacitor electrode materials and thereby increase the quantum capacitance." The team points out that their supercapacitors show excellent cycle stability with very little degradation over at least 10000 cycles. "At the end point of the electrode lifetime, the CNTs from the used electrode could be recycled to make another new electrode," Rao notes. "The recycled electrode could perform as efficiently as 60% of the original method-a great advantage in terms of sustainability." Another advantage of the roll-to-roll spray-coating process is a significantly lower cost. As the researchers report, the final price of the spray coated CNT electrodes could be reduced by almost 17%, which includes material and production cost. "The industrial collaboration with Cornell Dubilier and Sai Global Technologies is a vital component of this research and is expected to translate the lab-based technology to the market place," note Podila and Rao. "We are thankful to the National Science Foundation for granting an award to undertake such projects which would have lasting impact on the global energy landscape." Source: Nanowerk (http://www.nanowerk.com/spotlight/spotid=39245.php)