David Kirkpatrick

November 3, 2009

Breakthrough in large-scale nanotube processing

Via KurzweilAI.net — These manufacturing breakthroughs aren’t as exciting and sexy as a groundbreaking medical application or replacing copper wiring with carbon nanotubes or graphene, but they are key to turning nanotechnology into a viable industry.

Breakthrough In Industrial-scale Nanotube Processing
ScienceDaily, Nov. 3, 2009

Rice University scientists have unveiled a method for high-throughput industrial-scale processing of carbon-nanotube fibers, using chlorosulfonic acid as a solvent.

The process that could lead to revolutionary advances in materials science, power distribution and nanoelectronics.


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September 3, 2008

Using nanotech to improve electronics and energy

Filed under: Science, Technology — Tags: , , , — David Kirkpatrick @ 10:05 pm

From KurzweilAI.net — Nanonets made of silicon and titanium wires crank up the surface area and improve electronics and energy usage and apps.

Scientists Grow ‘Nanonets’ Able To Snare Added Energy Transfer
ScienceDaily, Sep. 3, 2008

Boston College chemists have produced nanonets, a flexible webbing of self-assembling nanoscale titanium and silicon wires that multiplies surface area, critical to improving the performance of the wires in electronics and energy applications.

Test shows improved performance in the material’s ability to conduct electricity and ability to absorb light across a wide range of the solar spectrum.

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Cloak of invisibility meet your master

Filed under: Science, Technology — Tags: , , , , — David Kirkpatrick @ 10:02 pm

From KurzweilAI.net — I’ve blogged on invisibility cloaks and their feasibility here and here. Now all that excitement may be undone.

From the final link:

‘Invisibility Cloak’ Undone
ScienceDaily, Sep. 3, 2008Chinese scientists have proposed a theoretical “anti-cloak” that would partially cancel the effect of an invisibility cloak.

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PhysOrg covered this as well with a some detail on what the anti-cloak is actually about and how it could be implemented.

An even greater problem for anyone who has aspirations to be concealed in public one day is that invisibility achieved through transformation media is a two-way street. With no light penetrating a perfect invisibility cloak, there would be no way for an invisible person to see outside. In other words, invisible people would also be blind—not exactly what Harry Potter had in mind.

But now, Chen and his colleagues have developed way to partially cancel the invisibility cloak’s cloaking effect. Their “anti-cloak” would be a material with optical properties perfectly matched to those of an invisibility cloak. (In technical jargon, an anti-cloak would be anisotropic negative refractive index material that is impedance matched to the positive refractive index of the invisibility cloak).

While an invisibility cloak would bend light around an object, any region that came into contact with the anti-cloak would guide some light back so that it became visible. This would allow an invisible observer to see the outside by pressing a layer of anti-cloak material in contact with an invisibility cloak

August 6, 2008

Making headway toward quantum computing

From KurzweilAI.net:

Breakthrough In Quantum Mechanics: Superconducting Electronic Circuit Pumps Microwave Photons
ScienceDaily, Aug. 5, 2008

Researchers at UC Santa Barbara have used a superconducting electronic circuit known as a Josephson phase qubit to store up to six microwave photons in a superconducting microwave resonator.

The research could help in the quest to build a quantum computer.
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