Archive for the ‘transistors’ tag
Stretchy material could lead to flexible electronics
Scientists from the University of Tokyo have developed a stretchy, rubbery material which is able to conduct electricity.
When the material, which comprises single wall carbon nanotubes, elastic resin and an ionic liquid, is attached to a grid of tiny transistors, it cab be stretched up to 2.34 times its original size, without adverse effects to the conductivity. Later it reverts to its original form.
A similar material was developed in 2005, but was only able to stretch 1.25 longer than its original size, and its conductivity limited to 10S/cm. The newly developed material has a conductivity of 57S/cm.
According to a paper published by the scientists working on the project, the material could be used to create flexible electronics, and there have been suggestions it could be used on the joints of a robot’s arm.
Read more on: carbon nanotubes, Design, electricity, Electronics, material, resin, rubber, transistorsResearchers net a solution to flexible electronics
Researchers from Perdue University and the University of Illinois at Urbana-Champaign, have overcome a major obstacle in producing transistors from networks of carbon nanotubes.
‘Nanonets’ are made of tiny semiconducting cylinders called single walled carbon nanotubes. These metal tubes then link together in meandering threads that eventually stretch across the width of the transistor causing a short circuit.
Researcher John Rogers, explained: “Other researchers have proposed eliminating the metallic nanotubes. Instead we have found a very nice way of essentially removing the effect of these metallic nanotubes without actually eliminating them.”
Read more on: carbon nanotubes, Design, Electronics, metallic nanotubes, transistors, University of IllinoisSilicon coating sorts nanotube groups
A new method of sorting single-walled carbon nanotubes (SWNTs) according to their chirality, could help solve a long standing problem in the fabrication of nanotube-based electronics.
A SWNT can behave as either a metal or a semiconductor, depending on the spatial arrangement of its carbon atoms, or chirality. SWNTs are produced as a mixture of both types, however, these do not work well together and need to be separated before use.
While number of methods have been devised to separate the two types of SWNTs, none have proven practical for large scale applications.
Read more on: carbon nanotubes, chirality, Electronics, nanotubes, Silicon, SWNTs, transistors