ramjitti

The electrical conductivity of conducting fibres normally decreases when they are highly stretched but researchers at the University of Texas at Dallas have now created superelastic fibres based on carbon nanotubes that do not suffer from this problem. Indeed, the conductivity of the new fibres actually increases by 121-fold when they are stretched to over […]

Graphene field-effect transistors (GFETs) could make good biosensors but before they can be employed in such applications, researchers need to quantify the thermal noise limit in these devices. A team at Oregon State University and Cornell University has now done just this by measuring the impedance between a graphene sheet and the liquid it is […]

Researchers in the US and China have developed a new ultrafast, clean and scalable technique to suspend layers of 2D materials like graphene, molybdenum sulphide, molybdenum selenide and tin sulphide above various patterned substrates. The technique, which is a general one (it may even be applied to other nanomaterials such as nanotubes and nanowires), could […]

“Truncated” protein nanopores can be used to sequence DNA quickly and cheaply, according to new experiments by researchers at the University of Oxford in the UK. Their work could help meet and even surpass the famous “$1000 genome” target set by the US National Health Institute……. http://nanotechweb.org/cws/article/tech/61914 The truncated pores used to detect DNA and […]

The ability to sequence DNA has opened up the possibility of personalised medicine uniquely tailored to an individual’s genetic make-up. Optical sensing could provide the high-throughput DNA sequencing that would help make personalised medicine practically viable, but these approaches demand nanoporous membranes fabricated to high-level specifications that have so far only been achieved with painstaking […]

Researchers at the University of Cambridge in the UK and IBM in the US have developed a new bottom-up self-assembly technique to grow quantum dots in semiconducting nanowires. Being able to precisely control the properties of complex heterostructures like these means that they could be used to make building blocks for devices like single-electron transistors, […]

A new nuclear magnetic resonance (NMR) technique that can identify and quantify the ionic species responsible for storing charge in supercapacitors could help researchers better understand these devices on the molecular scale. The work could ultimately lead to improved supercapacitors……… http://nanotechweb.org/cws/article/tech/61814 Clare Grey

IBM Research has announced that it has succeeded in fabricating working test chips whose smallest features approach 7 nm. The breakthrough, achieved in collaboration with GlobalFoundries, Samsung and researchers at the SUNY Polytechnic Institute Colleges of Nanoscale Science and Engineering means that it may now be possible to pack more than 20 billion transistors onto […]

It is now possible to create and controllably steer light-like wakes – which are 2D analogues of Cerenkov radiation, water wakes created by boats and ships, and the sonic boom produced by some aircraft. So say researchers from the US, Singapore and Italy, who have been studying surface plasmons (light-like waves confined on the surface […]

It is now possible to synthesise bimetallic nanowires made from silver and gold whose length can be precisely controlled thanks to new experiments by researchers in Spain, Germany, Belgium and France. Since the wires made also have roughly the same molecular weight, their “surface plasmon resonances” can be tailored too – in the near- and […]