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Nanotechnology Spotlights

Self-healing hybrid gel system

supramolecular_gelPreviously reported conductive self-healing materials usually need large amounts of inorganic conducting fillers and their self-healing behaviors are only activated under specific external stimuli, such as heat, light, pH, etc. A new hybrid gel is composed of conductive polymer and a metal-ligand supramolecule; the novel gel exhibits attractive properties associated with both conventional polymers, such as ease of synthesis...

Posted: Aug 25, 2015

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A nanoscale color filter

wavelengthFor the past decade, researchers have searched for robust, inorganic color filters that can replace traditional organic dye-based filters for better stability, lifetimes, performance, and amenability to miniaturization. I new work, researchers fabricated an inorganic filter that can operate with a single element. This represents an important step toward nanoscale color filters. The team devised a a simple design in which light...

Posted: Aug 13, 2015

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Foldable glass

folded_panelsGlass is notorious for its brittleness. Although industry has developed ultra-thin, flexible glass that can be bent for applications liked curved TV and smartphone displays, fully foldable glass had not been demonstrated. Until now. In new work, researchers have demonstrated substrate platforms of glass and plastics, which can be reversibly and repeatedly foldable at pre designed location(s) without any mechanical failure...

Posted: Aug 11, 2015

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World's first nanorod-based solar module

solar_moduleThe development of perovskite solar cells, first reported in 2009 (and with a record power conversion efficiency of 20.1 percent so far), is a possible route towards high efficiency photovoltaics that are also cost-effectiveness, owing to to their easy-processing from solution. Question marks have however remained on their stability. Now, researchers report the world's first nanorod-based perovskite solar module. In addition...

Posted: Aug 07, 2015

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3D nanopatterning with memory-based, sequential wrinkling

wrinklesWrinkling and buckling can occur at all length scales in materials composed of a stiff thin film on a strained supporting layer. When the strain is removed, either by thermal or mechanical stimuli, different surface patterns can form. This phenomenon - now starting to be realized at nanometer length scales - is emerging as a powerful bottom-up nanopatterning method to program surfaces with unique properties. It has many applications...

Posted: Aug 04, 2015

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A facile process for the vertical orientation of block copolymer nanodomains

nanofabricationResearchers introduced a novel self-neutralization concept by designing molecular architecture of a block copolymer to develop vertically oriented lamellar or cylindrical nanodomains without pre- or post-treatments. Previously, in order to induce vertical orientation of block copolymer nanodomains in the film state, diverse pre- or post-treatments to neutralize the preferential affinity between a substrate and each block of...

Posted: Aug 03, 2015

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Nanoparticles accelerate and improve healing of burn wounds

bandaidsSkin thermal burns are a complex and major source of morbidity, mortality and healthcare expenditure. Given the range of causes, from fire associated injury to water scalding, patients often present with multiple and complex burns - wounds that often worsen and expand over the first few days do to the associated underlying inflammation and injury. To facilitate better wound healing, researchers have developed nanoparticles...

Posted: Jul 28, 2015

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Suppressing flicker noise in graphene boron nitride heterostructure field-effect transistors

graphene_HFETThe noise level in devices with graphene and other two-dimensional (2D) materials has to be reduced in order to enable their practical applications. It will not be possible to build graphene-based communication systems or detectors until the noise spectral density is decreased to the level comparable with the conventional state-of-the-art transistors.Researchers have now demonstrated that the electronic noise in graphene devices...

Posted: Jul 27, 2015

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