Recent Spate of Activity in the Nanotechnology Realm

Recent Spate of Activity in the Nanotechnology Realm

Nanotechnology

There has been a spate of activity in the nanotech realm lately. Over the past few months I’ve tracked several new developments. Here they are in no particular order: spine, ram, solar cell, ca

Solar Film

1) Solar Power: The problem with solar technology is the high cost of the solar cells. The current level of technology in solar is in silicon wafer solar cells. They have low relative effeciency and a high relative cost. This makes them unfeasible as a replacement. Many companies, amont them Nanosolar of California, have developed a technology using nanoparticles which can absorb light more efficiently, but more importantly, more economically. Nanosolar is targetting a rate of $1/watt which would make solar power a viable alternative over nuclear or fossil fuels.

More amazing is the fact that the solar films can be mass produced and printed on to any building or surface. More details can be found here: http://www.economist.com/world/international/displaystory.cfm?story_id=10989479
http://www.nanosolar.com/

John Kanzius

2) Cancer Treatments:This story warms my heart on so many levels. John Kanzius was himself diagnosed with Leukemia. He underwent several bouts of painful chemotherapy. Not a physician but instead a retired radio and television engineer, he had a brainwave one night while sleeping. He came up with the idea of using radio waves to selectively target cancer cells while leaving the remaining healthy cells unscathed. Chemotherapy is based on the differential survivability of cancerous cells versus healthy cells. That is to say the chemicals used are toxic to both healthy and cancer cells, and the hope is that the cancer cells die out faster than the healthy ones: not a promising prospect.

Kanzius’ idea is remarkably different. He plans to send nanoparticles of gold into the tumor. He plans to use a targeting molecule attached to the gold nanoparticle to saturate the tumor with particles. Then he directs a highly concentrated radio beam towards the tumor. The gold heats up under influence of this beam and essentially the tumor is cooked.

Racetrack Memory

3) RAM-Memory: Hard discs have had a good run. They’ve given us a terabyte of storage at nominal cost and with reasonable access time. The technology of the future however will but much smaller, with no operating parts to wear out. The technology is called ‘Racetrack’ and is being developed in the Almaden Research Center in San Jose California. At the heart of the technology electron spin is used to code information. This information races along a nanowire at blazing speeds with very low power consumption. Future incarnations of this technology promise replace hard discs an allow for near instantaneous start up and uncompromising reliability.

Nano Fibres

4) Spinal Repair: We all recall fondly the heroic efforts of Christopher Reeve to bring about an awareness of spinal injury and the tragic effects it can have on the sufferers and their families. The problem with spinal injury, indeed most nerve injury, is that the injured site (referred to as a transection) forms a scar at either end of the cut bundle. Nerves do have the ability to regrow however, they lack the ability to bridge this scar. John Kessler, M.D., Davee Professor of Stem Cell Biology at Northwestern University’s Feinberg School of Medicine has come up with a gel of self assembling nanostructures which is injected at the injury site. Once inside, they go to work assembling a scaffolding which allows neural stem cells to bridge the gap. Mice with spinal injuries were injected with the compound and showed significant improvement including the ability to walk again.

3 thoughts on “Recent Spate of Activity in the Nanotechnology Realm

  1. Most interesting site. Can assist in keeping one up to date with this astonishing developments in the field of the technology of the future. Most exciting to read of progress with nano tech. I am interested layperson in this field but am thrilled to no end by monitoring such stunning developments and remaining abreast of what the future holds.

  2. Thanks for the feedback. I wasn’t sure how much of an audience science and technology would have, but I think that people are interested and if they are written to with respect… that is, without unecessary dumbing down, they’re capable of understanding many ‘advanced’ topics.

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