Researchers 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 bulk doped nitrogen-doped carbon nanotubes.
Graphene and graphene-based materials have attracted great attention in energy storage applications for batteries and supercapacitors owing to their unique properties of high mechanical flexibility, large surface area, chemical stability, superior electric and thermal conductivities that render them great choices as alternative electrode materials for electrochemical energy storage systems. A recent review article summarizes the progress in graphene and graphene-based materials for four energy storage systems, i.e., lithium-ion batteries, supercapacitors, lithium-sulfur batteries and lithium-air batteries.
The European Commission has published a compendium 'Nanotechnologies: Principles, Applications, Implications and Hands-on Activities' that has been specifically developed to provide the educational communities with relevant, accurate and updated materials to inform, motivate and inspire young people to know more about nanosciences and nanotechnologies concepts and applications. This resource has been developed within the context of the European research project Nanoyou, and it has been enriched with numerous and multifaceted inputs, reflections and insights on societal issues, also provided by the European project TimeforNano.
3D-printing processes are engineered to use material more efficiently, give designs more flexibility and produce objects more precisely. These 3D printing techniques are reaching a stage where desired products and structures can be made independent of the complexity of their shapes. Applying 3D printing concepts to nanotechnology could bring similar advantages to nanofabrication - speed, less waste, economic viability - than it is expected to bring to manufacturing technologies. here we show examples of current research into 3D printing in nanotechnology.
As we are moving into an era of flexible and wearable electronic devices, one challenge that arises is an increased vulnerability to mechanical failure. Relatively small damages such as tiny cracks along the electrical conductive pathway caused by the bending, twisting and folding of such devices could easily cause the entire gadget to fail. Researchers have now demonstrated light-powered healing of an electrical conductor. They show that green light even with low intensity has potential to provide fast and repetitive recovery of a damaged electrical conductor without any direct invasion.
Researchers have explored the use of curcumin nanoparticles for the treatment of infected burn wounds, an application that resulted in reduced bacterial load and enhancing wound healing. Adding to the excitement regarding curcumin in multiple fields of medicine, most prominently in oncology, these new findings demonstrat that curcumin nanoparticles were more effective at both accelerating thermal burn wound closure and clearing infection with Methicillin Resistant S. aureus (MRSA) as compared to curcumin in its bulk size.
Ferroelectric liquid crystal (FLC) display technology holds the promise of fast switching times, a large viewing angle, and high resolution. FLCs have a spontaneous polarization whose direction is perpendicular to the layer. This spontaneous polarization plays an imperative role in the electro-optic switching of FLCs. Researchers have now developed a technique to amplify the spontaneous polarization by doping graphene into FLCs.
Electrochromic devices are some of the most attractive candidates for paper-like displays, so called electronic paper, which will be the next generation display. Researchers have now demonstrated solid state flexible polymer based electrochromic devices are fabricated continuously by stacking layers in one direction. This novel bottom-up approach with no need for a lamination step enables fully printed and 2D patterned organic electrochromics.