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        Nanotechnology to Improve Health Care

        The NanoAging Institute writes "There is a nice article mentioning nanomedicine on The New York Time, here is a excerpt from the article:Nanomedicine will probably become the biggest change for humans in our society but when?

        There is more extensive discussion on the development of various aspects of nanotechnology for use in medicine as well as cryonics here."

        Mass producable nanotubes, room temp

        Brian Wang writes "South Korean scientists found a simple way to produce high-purity single-walled carbon nanotubes en masse, the vital materials for nanotechnology, under ambient conditions.

        Until now, scientists created the substances at high temperatures ranging from 700 to 2,000 degrees Celsius. But the yield rate was still below 70 percent and purity was between 70 to 95 percent, even after multi-step purification processes.

        By contrast, Park's team used the chemical effects of ultrasound and a liquid solution to make nanotubes at atmospheric pressure and room temperature.

        The newfound method worked handsomely as it enabled volume production of high-purity nanotubes without a purification process and its yield rate also improved to more than 90 percent. Mass Production of Carbon Nanotube Becomes Possible"

        Water Helps to Clean Carbon Nanotubes

        Roland Piquepaille writes "Carbon nanotubes, which can have useful electrical or optical properties, are typically grown using chemical vapor deposition techniques. During this process, amorphous and useless carbon layers are also produced, meaning that a post-growth purification process is needed. Not anymore. According to this article from Technology Research News (TRN), Japanese researchers have successfully used water to get rid of these impurities. The idea of using water to clean carbon nanotubes is so simple that I'm amazed that nobody thought about it before. Anyway, this method, which eliminates the post-growth purification process, still needs some improvements and will not help to mass produce carbon nanotubes before at least five years. You'll find more details and references in this overview. And you'll find even more nanotechnology achievements in this Nanotech News Roundup #1."

        "N is for Nanotechnology" documentary: trailer available

        Senior Associate Gina Miller brings to our attention a film from a team affiliated with University of Toronto: "N is for Nanotechnology is a new 30 minute documentary that discusses the field of nanotech. You can download the trailer at this website: http://www.knhproductions.ca. You can also click through drawings at the site. I have not figured out where, when, or even if the documentary is going to air or if it will be available for purchase?" The trailer looks promising. óCP

        Texas-sized ambitions to fight cancer with nanodevices

        While current work is bulk materials-based, researchers in Texas are setting high goals for future achievements in nanomedicine: ìThe whole idea of being able to develop devices that we can manipulate at the cellular level to perform a function is very compelling"…Rosenblum likens these devices to a kind of miniscule robot ìbecause they are programmed to perform a certain task and report back to us. We can track exactly where they are in the body…We have hurdles to overcome because these are very complex devices…But we think this has the potential to solve crucial problems in cancer diagnosis and care.î

        Greenpeace UK position on nanotech: it depends

        Christine Peterson points out a letter from Greenpeace UK Chief Scientist Doug Parr to the editors of the Times regarding comments from Tracy Brown from Sense About Science asserting that Greenpeace is opposed to nanotechnology. It appears that is not entirely accurate. They may support nanotechnology if a case can be made that the benefits outweigh the risks.

        New Center of Integrated Nanomechanical Systems at U.C. Berkeley

        Christine Peterson points to this press release involving the new center.

        "The goal is to merge nanotubes and a host of other Tinkertoy-like nanopieces with organic molecules – DNA, proteins or nanomolecular motors – to create sensors or nanomachines small enough to fit on the back of a virus…. While some of the researchers are synthesizing and characterizing various building blocks, others will integrate them and map out system properties, and still others will develop the tools to manipulate and construct new building blocks and systems. Several researchers will pursue the theoretical basics and limits of new devices."

        Foresight Senior Associate Tom Kalil "helped meld the diverse group of researchers into a coherent center that captured the attention of the NSF."

        Pathway to Molecular Manufacturing

        Robert A. Freitas Jr. has announced the release of his report on a Pathway to Diamond-Based Molecular Manufacturing. This documents a possible path to diamondoid mechanosynthesis. The background academic work and studies involved a number of scientists at Zyvex who have filed for a provisional patent on the process.

        This is a shortened version of his presentation at the First Foresight Conference on Advanced Nanotechnology in October 2004. Anyone who is seriously interested in the mechanosynthesis path to nanotechnology who did not attend the conference should read this document

        Merging of optical and electrical technologies

        Though the size scales are not precisely "nanoscale". The merging of transistors with quantum dots suggests that we are going there.

        See: New Transistor Laser Could Lead To Faster Signal Processing.

        Ed note. This is yet another area which was not covered in Nanosystems (not that it could cover everything) — but we have no concept with regard to what the limits may be in nanomagnetics, nanoopticalelectronics, nanosupercondunction, etc. These limits are still largely unexplored. Hell, we don't even know the limits of things from drug synthesis technology (and therefore minimum production costs) to DNA sequencing technology (so one can know your precise genome on a generic basis to knowing your precise genome on a cellular basis). Without those your physician is effectively operating blindfolded.

        So we are operating blind at a number of developmental levels and if we want humanity to make the fastest possible progress we should fix that.

        Oxygen bonded to platinum

        Spacedaily is reporting (here) that scientists have managed to bond oxygen to platinum breaking through the so-called "oxo-wall". One must ask, given the catalytic properties of platinum and the reactive propensity of oxygen, what could an oxo-platinum tipped Fine Motion Controller (or SPM) do?

        Consideration of higher molecular weight elements is largely lacking in Nanosystems. Yet most elements from iron to uranium have some very interesting properties at the nanoscale level. Should these not be explored in more detail?

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