ScienceDaily: Top Technology News |
- Green ring fit for a superhero: Spitzer Space Telescope spies powerful light of giant 'O' stars
- New insights on an old material will enable design of better polymer batteries, water purification
- Team reports scalable fabrication of self-aligned graphene transistors, circuits
- Glimpsing the end of our solar system
| Green ring fit for a superhero: Spitzer Space Telescope spies powerful light of giant 'O' stars Posted: 19 Jun 2011 11:05 AM PDT This glowing emerald nebula seen by NASA's Spitzer Space Telescope is reminiscent of the glowing ring wielded by the superhero Green Lantern. In the comic books, the diminutive Guardians of the Planet "Oa" forged his power ring, but astronomers believe rings like this are actually sculpted by the powerful light of giant "O" stars. O stars are the most massive type of star known to exist.  |
| New insights on an old material will enable design of better polymer batteries, water purification Posted: 19 Jun 2011 10:35 AM PDT Scientists have devised a way to measure Nafion's internal structure and, in the process, have discovered how to manipulate this structure to enhance the material's applications.  |
| Team reports scalable fabrication of self-aligned graphene transistors, circuits Posted: 17 Jun 2011 08:07 AM PDT Researchers previously reported a self-aligned technique for making graphene transistors with unparalleled speed, but scalability was a question. The team now uses a dielectrophoresis assembly approach to precisely place nanowire gate arrays on large area chemical vapor deposition growth graphene to enable the rational fabrication of high speed transistor arrays. They also did this on a glass substrate, minimizing the parasitic delay and enabling graphene transistors with extrinsic cut-off frequencies exceeding 50 GHz.  |
| Glimpsing the end of our solar system Posted: 17 Jun 2011 05:08 AM PDT Astronomers are investigating the possible eventual fate of the solar system by examining 'white dwarf' stars elsewhere in our galaxy.  |
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