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Nanotechnology Spotlights

On route to self-powered smart suits

triboelectric_nanogeneratorSuch energy-scavenging fabrics based on nano-sized generators that have piezoelectric properties could eventually lead to wearable 'smart' clothes that can power integrated electronics and sensors through ordinary body movements. Researchers have now demonstrated a new type of fully flexible, very robust and wearable triboelectric nanogenerator with high power-generating performance and mechanical robustness. This was achieved...

Posted: Feb 25, 2015

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Assembling nanoparticles into 3D structures with one microdroplet

nanoparticlesExisting fabrication techniques for 3D microstructures usually suffer from complicated equipment, time-consuming processes, and insufficient controllability on precise structures. Constructing controllable 3D self-assembly microstructure in a simple and convenient way is still a challenge. In new work, researchers propose a facile strategy to directly assemble nanoparticles into controllable 3D structures from one microdroplet...

Posted: Feb 24, 2015

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A simple test kit for the detection of nanoparticles

nanoparticle_colorimetric_assayMeeting the need for a reliable, sensitive, and accurate methodology for the detection of nanoparticles in complex samples, using low-cost and portable instrumentation, scientists have developed a novel methodology to quickly screen for the presence and reactivity of nanoparticles in commercial, environmental, and biological samples. A colorimetric assay - similar to a swimming pool test kit - tests for the presence or absence...

Posted: Feb 20, 2015

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Non-destructive subsurface imaging of carbon nanotubes in polymer composites

carbon_nanotubesResearchers report a non-destructive and high throughput 3D imaging of carbon nanotubes (CNTs) embedded in polymer matrix via Scanning Electron Microscopy (SEM). While have been several open questions remaining for SEM subsurface imaging of CNTs, this new findings clarify these issues and help establish SEM subsurface imaging as a useful and facile method to provide quantitative 3D information on CNT dispersions in polymer...

Posted: Feb 18, 2015

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Plasmonic nanocrystals for combined photothermal and photodynamic cancer therapies

hyperthermiaAn international team of researchers used abiotic assays, cultured cancer cells, and a melanoma animal model to demonstrate the photothermal therapy (PTT) activity of copper sulfide nanocrystals. The research lays out the working principle of colloidal, near-infrared light (NIR) plasmonic copper sulfide nanocrystals exploitable for both photodynamic therapy (PDT) and PTT therapy with NIR activation. This is the first report...

Posted: Feb 17, 2015

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Printing graphene folds

folded_grapheneIn an effort to find a way to introduce folds or waves into graphene in a simple and large-scale way, researchers have invented a rubber-stamp printing method to introduce waves into the graphene. The ability to controllably form folds in graphene has significant research and technological applications. Induced folds have a sublithographic width and macroscopic length. They could be used as channel materials or interconnects...

Posted: Feb 16, 2015

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3D-printing with graphene

graphene_structureThe successful implementation of graphene-based devices invariably requires the precise patterning of graphene sheets at both the micrometer and nanometer scale. It appears that 3D-printing techniques are an attractive fabrication route towards three-dimensional graphene structures. Researchers have now used flakes of chemically modified graphene, namely graphene oxide GO and its reduced form rGO, together with very small...

Posted: Feb 09, 2015

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Nanotechnology and nanomaterials for camouflage and stealth applications

stealth_fighterThis article briefly describes how nanomaterials and nanotechnology can be useful in the strategic area of camouflage and stealth technology. The section on threat perception briefly describes about various sensors and platforms from where those sensors can be operated for the purpose of surveillance, detection and identification of military objects. Prominent nanomaterials, which can find applications in futuristic stealth...

Posted: Jan 30, 2015

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