Technology Update
Researchers at the University of California, San Francisco, say they have a developed a new type of thin-film, biocompatible cell-encapsulation device from a polymer called polycaprolactone. The structure might be employed in cell replacement therapy to treat diseases like diabetes…….. http://nanotechweb.org/cws/article/tech/61200 The device
Nanostructured networks lend certain attributes of nanoparticles to macroscale systems
Researchers at Imperial College London and the Houston Methodist Research Institute in Texas say they have made biocompatible porous silicon nanoneedles that can efficiently deliver nucleic acids and nanoparticles into biological cells without damaging them. The needles can deliver these therapeutics into live cells that are normally difficult to transfect and the technique might help […]
A new type of metallic state of matter has been discovered by an international team of researchers studying a superconductor made from carbon-60 molecules or “buckyballs”. The team found the new state after changing the distance between neighbouring buckyballs by doping the material with rubidium. The study reveals that the material has a rich combination […]
Researchers in Germany, Moldova and Australia have developed a new way to build 3D architectures of semiconducting crystallites by growing gallium nitride (GaN) nano- and micro-buds on an aerographitic “tree”. The technique might be used to create flexible composites as next-generation nanomaterials for electronic, photonic and sensor applications….. http://nanotechweb.org/cws/article/tech/61134 3D aerographite
Researchers in Italy have made the first “bionicomposite” from carbon nanotubes or graphene and spider silk. The resulting fibres, which are the toughest and strongest ever measured, were produced by simply placing the spiders in a box and spraying them with water containing the carbon nanomaterials. The reinforced silk could find use in a wide […]
Although interactions are at the core of most advances in nanoscale science, research projects usually study just a few interactions at a time. Now researchers have come up with a design strategy to make and study networks of billions of interacting nanowires using a combination of top-down and bottom-up fabrication and traditional electronic measurement technology. […]
Researchers in the Korea and US say they have made amorphous indium-gallium-zinc oxide thin-film transistors that are completely soluble in water. The transient devices, which “disappear” once they have served their purpose, might be used in a wide range of new technologies, such as temporary, biodegradable medical implants, environmental sensors, and hardware for secure data […]
Researchers at Northwestern University in the US say they have printed the first biocompatible 3D graphene-based composite from liquid ink. The 3D structure is strong and flexible with electrical conductivities of 800 S/m, which is 10 times higher than previously reported values for 3D printed carbon materials. The composite also appears to help regenerate damaged […]
Researchers at the King Abdullah University of Science and Technology in Saudi Arabia (KAUST) say they have succeeded in designing a new type of nanotube tunnelling field-effect transistor (TFET) that has a much higher drive current than TFETs made from nanowires. The new TFET also switches on and off faster while running on less power […]
Researchers at Northwestern University in the US say they have succeeded in tuning the lasing wavelength in a device made from plasmonic nanocavity arrays.
Researchers in the UK, Germany, Thailand and Hong Kong say they have made nonlinear metasurfaces in which they can continuously control the phase of the material’s nonlinear polarization for the first time. Compared with conventional techniques to do this, such as “poling”, the new approach allows for complete manipulation of the nonlinear signal’s wavefront and […]
Two quantum dots have been used to generate an electrical current from voltage noise. The device was created by physicists in Germany, who say that it could lead to the development of systems that convert waste heat into useful energy……. http://nanotechweb.org/cws/article/tech/60966 Connect the dots: the energy-harvesting device
A new class of magnetic memory known as spin-transfer torque magnetic random-access memory (STT-MRAM) could act as a memristive device and be used to make a synaptic-like junction capable of “learning”, according to new experiments by researchers from the Université Paris-Sud and the CEA in France. The junction might be useful as a memory element […]
Researchers in Japan have made the world’s smallest-width graphene nanoribbons ever. The surface of the ribbons, which were grown inside single-walled carbon nanotubes, can be functionalized, making them suitable for a wide range of future nano-electronics and optoelectronics devices…….. http://nanotechweb.org/cws/article/tech/60972 In the lab
The nanoelectronics industry has invested substantially in efforts to produce vertically oriented gated nanowires, with aspirations to scale these up to forests of nanowire transistors. But fabricating just one gate on these tiny structures is fiddly, and the whole procedure must be repeated for each additional gate. Now researchers have flipped this protocol on its […]
Nanowerk News) The National Nanotechnology Initiative today published the proceedings of a technical interchange meeting on “Realizing the Promise of Carbon Nanotubes: Challenges, Opportunities, and the Pathway to Commercialization” (pdf), held at the National Aeronautics and Space Administration (NASA) Headquarters on September 15, 2014. This meeting brought together some of the Nation’s leading experts in […]
Researchers at Northwestern University in the US say that they have made the first three-terminal memristor based on grain boundaries in a 2D material called molybdenum disulphide. The device could be used as a memory element in integrated circuits and next-generation computers that mimic how the human brain works…… http://nanotechweb.org/cws/article/tech/60892 Tuning memristors
The body responds to graphene oxide in much the same way as it does to other biomaterial implant materials that are known to be safe. This is the new result from researchers at the Massachusetts Institute of Technology and Harvard Medical School who have undertaken a detailed study of how biocompatible the carbon nanostructure is…… […]
DNA can be used as a programmable ligand to build 2D and 3D supercrystals from metal nanoparticles. This is the new result from researchers at Northwestern University in the US who have assembled the crystals from the bottom-up and precisely engineered their optical properties by controlling the spacing between the nanoparticle building blocks. The crystals […]
Researchers in the Netherlands and Spain say that they have succeeded in experimentally mapping the density of charge trap states within the bandgap of a semiconducting quantum dot film for the first time. The new work shows that electrons are trapped close to the valence band in the material – a result that has been […]
