Σάββατο 21 Σεπτεμβρίου 2013

ScienceDaily: Top Technology News

ScienceDaily: Top Technology News


NASA's Deep Space comet hunter mission comes to an end

Posted: 20 Sep 2013 11:42 AM PDT

After almost 9 years in space that included an unprecedented July 4th impact and subsequent flyby of a comet, an additional comet flyby, and the return of approximately 500,000 images of celestial objects, NASA's Deep Impact mission has ended.

Densest array of carbon nanotubes grown to date

Posted: 20 Sep 2013 08:12 AM PDT

Carbon nanotubes' outstanding mechanical, electrical and thermal properties make them an alluring material to electronics manufacturers. However, until recently scientists believed that growing the high density of tiny graphene cylinders needed for many microelectronics applications would be difficult. Now a team from Cambridge University in England has devised a simple technique to increase the density of nanotube forests grown on conductive supports about five times over previous methods.

Promising new alloy for resistive switching memory: Tiny nanoscale filaments could be breakthrough for smaller, denser memory devices

Posted: 20 Sep 2013 08:12 AM PDT

Researchers have tested a number of oxide materials for their promise in resistive switching memories, and now researchers in Singapore have demonstrated how conductive nano-filaments in amorphous titanium dioxide (TiO2) thin films could be utilized for resistive switching device applications.

Building bridges between nanowires

Posted: 20 Sep 2013 06:44 AM PDT

Place a layer of gold only a few atoms high on a surface bed of germanium, apply heat to it, and wires will form of themselves. These wires are no more than a few atoms in height and are separated by no more than 1.6 nanometres. Nanotechnologists bridge this small 'gap' with a copper-phthalocyanine molecule, which is able to rotate if the electrons coursing towards it possess sufficient energy, allowing it to function as a switch. This might allow researchers to identify new properties the nanowires may possess.

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