Nanotechnology Spotlight – Latest Articles

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Showing Spotlights 25 - 32 of 2140 in category (newest first):

 

Addressing the hazard potential of 2D nanomaterials

2D_materialsA new paper reviews the studies to date that have addressed the toxicity of 2D materials, particularly emphasizing the preparation methods and resulting physicochemical properties that dictate their interactions with biological systems. In addition, due to its importance in determining exposure risk, this review summarizes key results from the literature concerning the environmental fate of 2D materials. The authors hope that a thorough understanding of these issues will inform ongoing efforts to realize the design of safer 2D materials.

Jun 19th, 2018

Piezoelectric nanogenerators made from spider silk

spider_silkSpider silk fibers show nature's most outstanding mechanical properties, for example, excellent tensile strength and elasticity, and remarkable protein sequence structure. So far, it has remained completely unidentified how the mechanical properties of spider silk fibers effectively contribute to the performance of a piezoelectric nanogenerator. Now, researchers have successfully demonstrated by Piezoresponse Force Microscopy experiment that natural spider silk fibers have a definite vertical (out-of-plane) piezoelectric coefficient.

Jun 14th, 2018

Flexible, implantable nutrient sensors based on metal-organic frameworks

MOFResearchers have demonstrated materials and techniques to achieve highly sensitive flexible biosensors integrated with metal-organic frameworks (MOFs) - essentially inorganic-organic hybrids that contain repeated metal ions connected with organic ligands. These high-throughput flexible devices can achieve highly specific and sensitive electrochemical detection and can be used to monitor neurotransmitters and nutrients in vivo.

Jun 13th, 2018

Eggshell membranes from bio waste could be harvesters for green energy

eggshellIn new work, researchers explore inexpensive, biodegradable and daily-waste eggshell membrane as a novel bio-piezoelectric material for harvesting green energy. The uniqueness of our work lies in the novelty of directly utilizing natural eggshell membranes as efficient piezoelectric material. This simple, innovative approach could provide huge benefits for research in future energy science, especially with regard to in vivo biomedical applications.

Jun 12th, 2018

Potential nanotechnology applications in combating opioid drug abuse

pillsDrug abuse and dependence/addiction are complex disorders that are regulated by a wide range of interacting networks of genes and pathways that control a variety of phenotypes. Therefore, both identification of the at-risk population and treatment of the addiction disorders are strongly reliant on the development of new and innovative approaches for understanding the mechanisms underlying drug dependency and addiction. There are potential capacities of nanotechnology for the field of drug dependency and addiction.

Jun 1st, 2018

Microfluidics meets silver nanowires: transparent and flexible circuits with ultra precise pattern control

nanowiresResearchers have developed a new process for completely transparent and flexible circuits of any patterns as one wishes. The circuit patterns are created via the well-developed microfluidic technology on transparent and flexible substrates. The conductors are generated by spin coating of silver nanowires along the patterns. The advance stimulates more implications in future electronics. The researchers have demonstrated a simple application of the circuits as a biosensor for glucose detection.

May 31st, 2018

Turning hair into a biomedical nanomaterial

hairScientists have discovered that the hierarchical micro- and nanostructures of human hair can be turned into hierarchical micro- and nanoparticles with a simple top-down procedure and be used as a novel type of biomaterial for medical applications. This strategy of preparing biomaterials from abundant human hair might provide a potent tool for producing autogenous materials from patients themselves to overcome the drawbacks of synthetic materials.

May 30th, 2018

Transparent graphene implant for deep brain imaging and optogenetics

brain_implantAlthough advances in optical technologies such as multi-photon microscopy and optogenetics have revolutionized researchers' ability to record and manipulate neuronal activity, integration of optical modalities with electrical recordings is challenging due to generation of light-induced artifacts. In new work, scientists report a transparent graphene microelectrode neural implant that eliminates light-induced artifacts to enable crosstalk-free integration of 2-photon microscopy, optogenetic stimulation, and cortical recordings in the same in vivo experiment.

May 24th, 2018