Regenerating teeth and bone structure

Stem cells used to grow teeth in animal models Utilizing stem cells harvested from the extracted wisdom teeth of 18- to 20-year olds, Shi and colleagues have created sufficient root and ligament structure to support a crown restoration in their animal model. The resulting tooth restoration closely resembled the original tooth in function and strength. …

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Nanowelding nano-electronics

Researchers in Switzerland have developed a new technique for joining nanotubes. One technique, called “nanorobotic” spot welding, uses molten copper to join up objects in the same way that a human electrician might use solder. They position 50-nanometre-wide carbon nanotube filled with copper inside a nanorobotic manipulator, and run a small voltage through it to …

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Nano-cables convert light into electricity

The nano-cables developed by Takanori Fukushita of Tokyo Japan are 16 nanometres in diameter and several micrometres long. They resemble the light-harvesting antennae used by some bacteria and transform light into electricity in a similar way to the semiconductors in solar panels, albeit on a much smaller scale. “This is the first example of a …

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Idle electrical capacity enough for plug in Hybrid cars

If all the cars and light trucks in the nation switched from oil to electrons, idle capacity in the existing electric power system could generate most of the electricity consumed by plug-in hybrid electric vehicles. A new study for the Department of Energy finds that “off-peak” electricity production and transmission capacity could fuel 84 percent …

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Near term solar sails

Centauri dreams has a couple of interesting articles about near term solar sails. Gregory Benford (University of California at Irvine) and his brother James (Microwave Sciences) have solar sail with a painted polymer layer that desorp from the sail as extra propulsion The solar sail could be deployed in low Earth orbit by conventional rocket. …

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Plasmons – bridging optics and electronics

New light physics with plasmons that could bridge light, matter and electronics. Plasmon computers could operate at 100 Terahertz – 1000 terahertz or 20,000 to 200,000 times faster than mainstream computer chips. Part of what I think is the growing trend of greater control of all information, light, energy, matter and magnetism. (ILEMM) Two-dimensional light, …

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2030 Energy forecast is 50% more coal usage

Coal is projected to increase 50% in the AEO2007 reference case, particularly for electricity generation. Coal consumption is projected to increase from 22.9 quadrillion Btu (1,128 million short tons) in 2005 to more than 34 quadrillion Btu (1,772 million short tons) in 2030, with significant additions of new coal-fired generation capacity over the last decade …

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Faster read and write using gallium ions for Spintronics

Spintronic memory advance: New research suggests a new route for developing high density magnetic memory chips which will not lose information when the power is switched off. For the first time data will be written and read very fast using only electrical currents. Physicist at the Universities of Bath, Bristol and Leeds have discovered a …

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Reduce drag for faster and more efficient ships

The New Scientist, examines the efforts to reduce ship drag using tiny bubbles, slippery polymers and trapped sheets of air. As a ship moves through water it encounters three types of drag: wave drag, pressure drag and frictional drag. Wave resistance is mainly a problem at high speed, and can be minimised with a carefully …

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DBI Thorium Reactors

In 1968 DBI initiated research on the packaging of thorium in order to produce hydrogen as an energy carrier, and thus create a new commodity in thorium as an energy source. DBI has continued advancing its thorium program, beginning its ongoing concentrations on nuclear vessels and biomass to produce a commodity for the replacement of …

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