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Nanotechnology Spotlights

A nanoparticle-based alternative to Viagra

ViagraThe majority of men who undergo radical prostatectomy for the treatment of prostate cancer will suffer from erectile dysfunction due to disruption of the cavernous nerve. This nerve has been identified as responsible for penile erection. The oral erectogenic PDE5 inhibitors like Viagra rely on the functioning of this nerve to provide the initial burst of nitric oxide necessary to initiate an erection. In this condition nanotechnology...

Posted: Oct 24, 2014

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Graphene-based biomimetic soft robotics platform

soft_roboticsAmong the various robotic actuation mechanisms driven by different stimuli, light-driven systems have garnered more and more attention due to their advantages in wireless/remote control, localized rather than whole-field driven capabilities, and electrical/mechanical decoupling. Inspired by the photothermal effect of graphene in biomedical applications, researchers have now demonstrated an easily fabricated and remote/wireless...

Posted: Oct 23, 2014

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Ultra-stretchable silicon for flexible electronics (w/video)

silicon_springResearchers have demonstrated ultra-stretchability in monolithic single-crystal silicon. The design is based on an all silicon-based network of hexagonal islands connected through spiral springs. The resulting single-spiral structures can be stretched to a ratio more than 1000%, while remaining below a 1.2% strain. Moreover, these network structures have demonstrated area expansions as high as 30 folds in arrays. This method...

Posted: Oct 21, 2014

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Carbon-nanotube paper electrodes with very high loading for lithium-sulfur batteries

electrodeResearchers have created a free-standing carbon nanotube paper electrode with high sulfur loading for lithium-sulfur batteries employing a bottom-up strategy to design and fabricate a hierarchical structure. This new fabrication method does not employ aluminum foil or binders, thereby fully utilizing the advantage of a Li-S system with high specific capacity. This proof-of-concept experiment indicates that the rational design...

Posted: Oct 17, 2014

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Cleansing the ionic impurities in LCDs with nanoparticles

ferromagnetic_nanoparticlesImpurities during the production process of liquid crystal devices result in mobile ions that influence the LCs' field-induced switching phenomena, resulting in a phenomenon called image sticking, or ghosting. Researchers now have developed a method to reduce the presence of excess ions by doping LCDs with ferroelectric nanoparticles. They demonstrate that this reduction of free ions has coherent impacts on the LC's conductivity,...

Posted: Oct 16, 2014

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Graphene laminate drastically changes heat conduction of plastic materials

graphene_laminateGraphene laminate - multilayer stacks of graphene layers piled on top of each other - is a promising material for thermal coating applications. Researchers have investigated thermal conductivity of graphene laminate films deposited on PET substrates. They found that the compressed laminates have higher thermal conductivity for the same average flake size owing to better flake alignment. This shows a possibility of up to 600-times...

Posted: Oct 14, 2014

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Multifunctional RNA nanoparticles to combat cancer and viral infections

There is a significant need for new therapeutic approaches to combat diseases such as cancer and viral infections. Using RNA as a therapeutic modality brings to bear an entirely new approach, which not only allows for the construction of uniform scaffolds for attachment of functional entities, but also permits the use of all the different types of functionalities that are inherent in natural RNAs. New research demonstrates...

Posted: Oct 13, 2014

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CNT@NCNT coaxial nanocables - Toward full exposure of 'active sites'

coaxial_nanocableResearchers have demonstrated a unique coaxial carbon nanocable material with pristine carbon nanotubes as the core and nitrogen-doped wrinkled carbon layer as the shell. The active sites rendered by the surface enriched dopant atoms on the carbon nanocables are accessible and effective to catalyze the oxygen involved electrochemical reactions. These coaxial nanocables afford higher ORR/OER current compared with the routine...

Posted: Oct 10, 2014

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