Next-generation composites may monitor their own structural health

16.11. 2018 Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News

Carbon fiber composites—lightweight and strong—are great structural materials for automobiles, aircraft and other transportation vehicles. They consist of a polymer matrix, such as epoxy, into which reinforcing carbon fibers have been embedded. Because of differences in the mechanical properties of these two materials, the fibers can detach from the matrix under excessive stresses or fatigue. That means damage in carbon fiber composite structures can remain hidden below the surface, undetectable by visual inspection, potentially leading to catastrophic failure.

A way to make batteries almost any shape desired

16.11. 2018 Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News

A team of researchers from Korea Advanced Institute of Science and Technology, Harvard University and Korea Research Institute of Chemical Technology has developed a way to make batteries in almost any shape that can be imagined. In their paper published in the journal ACS Nano, the researchers describe the process used to make the batteries and the device they created to prove the concept sound.

Graphene flickers at 400Hz in 2500ppi displays

16.11. 2018 Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News

With virtual reality (VR) sizzling in every electronic fair, there is a need for displays with higher resolution, frame rates and power efficiency. Now, a joint collaboration of researchers from SCALE Nanotech, Graphenea and TU Delft have used graphene to make reflective-type displays that operate faster and at much higher resolution than existing technologies.

‘Smart skin’ simplifies spotting strain in structures

15.11. 2018 Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News

Thanks to one peculiar characteristic of carbon nanotubes, engineers will soon be able to measure the accumulated strain in an airplane, a bridge or a pipeline – or just about anything – over the entire surface or down to microscopic levels.

Nanofiber carpet could lead to new sticky or insulating surfaces

15.11. 2018 Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News

Inspired by the extraordinary characteristics of polar bear fur, lotus leaves and gecko feet, engineering researchers have developed a new way to make arrays of nanofibers that could bring us coatings that are sticky, repellant, insulating or light emitting, among other possibilities.

Scientists combine graphene foam, epoxy into tough, conductive composite

14.11. 2018 Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News

Rice University scientists have built a better epoxy for electronic applications.

Optimization of alloy materials: Diffusion processes in nano particles decoded

14.11. 2018 Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News

aluminum alloys have unique material properties and are indispensable materials in aircraft manufacturing and space technology. With the help of high-resolution electron tomography, researchers at TU Graz have for the first time decoded mechanisms crucial for understanding these properties. The research results have recently been published in Nature Materials.

Surfaces with controlled wettability to trap and identify molecules at trace concentrations

13.11. 2018 Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News

An international group of physicists from Far Eastern Federal University (FEFU), the Russian Academy of Sciences and Swinburne University of Technology (Australia) has developed a technology for trapping and chemical analysis of organic and non-organic molecules at ultra-low concentrations. The article was featured in Nanoscale.

Researchers offer solution in fight against fake graphene

13.11. 2018 Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News

Ever since the isolation of graphene was first achieved in 2004, there has been an explosion in graphene-related research and development, with hundreds of business opportunists producing graphene to capitalise on this rapidly expanding industry. However, a new study by researchers from the National University of Singapore (NUS) has uncovered a major problem – a lack of production standards has led to many cases of poor quality graphene from suppliers. Such practices can impede the progress of research that depend fundamentally on the use of high-quality graphene.

Graphene on the way to superconductivity

09.11. 2018 Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News

Scientists at HZB have found evidence that double layers of graphene have a property that may let them conduct current completely without resistance. They probed the band structure at BESSY II with extremely high resolution ARPES and could identify a flat area at a surprising location. Their research is published in Science Advances.

Nano-scale process may speed arrival of cheaper hi-tech products

09.11. 2018 Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News

An inexpensive way to make products incorporating nanoparticles—such as high-performance energy devices or sophisticated diagnostic tests—has been developed by researchers.

Creating better devices: The etch stops here

08.11. 2018 Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News

A team of multi-disciplinary scientists and engineers at the University of Illinois at Urbana-Champaign have discovered a new, more precise, method to create nanoscale-size electromechanical devices. Their research findings are published in Nature Communications.

Pore size alone does not matter when biological nanopores act as sugar chain biosensors

08.11. 2018 Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News

Protein nanopores are present in cell membranes and act as biological gateways. This means that they can also be used for the detection of specific bioactive molecular chains, like sugar chains, such as molecules from the glycosaminoglycan family. The latter are responsible for key interactions at the cellular level. They typically mediate interactions with cell surfaces or with proteins, resulting in the activiation of physiological and pathological effects in embryonic development, cell growth and differentiation, inflammatory response, tumour growth and microbial infection. The use of such nanopores as biosensors requires to fully understand the intricate mechanisms occurring as sugar chains pass through them.

Enhanced power factor in transparent thermoelectric nanowire materials

08.11. 2018 Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News

A research group led by Professor Yoshiaki Nakamura of Osaka University successfully developed a methodology for enhancing thermoelectric power factor while decreasing thermal conductivity. By introducing ZnO nanowires into ZnO films, the thermoelectric power factor became three times greater than that of ZnO film without ZnO nanowires.

Graphene takes a step toward renewable fuel

08.11. 2018 Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News

Using the energy from the sun and graphene applied to the surface of cubic silicon carbide, researchers at Linköping University, Sweden, are working to develop a method to convert water and carbon dioxide to the renewable energy of the future. They have now taken an important step toward this goal, reporting a method that makes it possible to produce graphene with several layers in a tightly controlled process. The researchers have also shown that graphene acts as a superconductor in certain conditions. Their results have been published in the scientific journals Carbon and Nano Letters.