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Archive for July, 2002

Fluid Control Nanovalve Design

Posted by Jim Lewis on July 31st, 2002

from the molecular-machine-shop dept.
santiago writes "Design of a Nanomechanical Fluid Control Valve Based on Functionalized Silicon Cantilevers: Coupling Molecular Mechanics and Classical Engineering Design

Santiago Solares(*), Mario Blanco, and William A. Goddard III
Materials and Process Simulation Center, California Institute of Technology,
Mail Code 210-41, Pasadena, CA 91125
(*) Author to whom correspondence should be addressed
Full text available at:"

Swiss center for micro- and nanoscience

Posted by Jim Lewis on July 31st, 2002

from the new-incubators dept.
Small Times reports the opening of a nanotechnology laboratory in a Swiss Institute that has an impressive track record in creating spinoff firms from its research: New Zurich Nanotech Lab Will Help Advance Industry.

Nanotechnology yields energy-efficient lighting

Posted by Jim Lewis on July 30th, 2002

from the from-defects-to-NanoPockets dept.
S. Hodgdon writes "Top technology story in today's Kopin Shines Its Tiny Light. Here's a link to the press release: Kopin Harnesses Nanotechnology to Achieve Efficiency Breakthrough in Solid-State Lighting "

Encyclopedia of Nanoscience and Nanotechnology

Posted by Jim Lewis on July 30th, 2002

from the light-bedtime-reading dept.
Dr. H. S. Nalwa writes "American Scientific Publishers is bringing the World first encyclopedia in the field of nanotechnology to be available in March 2003."
10-VOLUME SET (Available Both in Print and Online)
ISBN: 1-58883-001-2, Library of Congress Catalog Number: 2002110511, Publication Date: March 2003, Pages: ca. 6000 pages

Quantum Computing from Semiconductor Materials

Posted by Jim Lewis on July 29th, 2002

from the hope-for-qubits dept.
waynerad writes "For the first time, University of Wisconsin-Madison scientists have designed a semiconductor-based device that can trap individual electrons and line them up, an advance that could bring quantum computing out of the gee-whiz world of scientific novelty and into the practical realm. Professors Mark Eriksson and Bob Joynt ( physics), Max Lagally (materials science and engineering), and Dan van der Weide (electrical and computer engineering) have developed a new type of "quantum dot" device for holding electrons that can be scaled up to build a working quantum computer. Made from tiny amounts of the same semiconductor materials used in today's computer chips, each quantum dot device contains just one infinitesimally small electron. When many of the devices are aligned, the electrons they house become usable quantum bits, or qubits, for computing."

A preprint paper describing the technology: Design and proof of concept for silicon-based quantum dot quantum bits.

Call for moratorium on commercial nanomaterials

Posted by Jim Lewis on July 29th, 2002

from the ban-it-first-ask-questions-later dept.
In a lengthy position paper posted on their web site No Small Matter! Nanotech Particles Penetrate Living Cells and Accumulate in Animal Organs ETC Group, which describes itself as "dedicated to the conservation and sustainable advancement of cultural and ecological diversity and human rights," calls for "an immediate moratorium on commercial production of new nanomaterials [and for launching] a transparent global process for evaluating the socio-economic, health and environmental implications of the technology."

Gold Nanoparticle gradient to aid catalyst, sensor research

Posted by Jim Lewis on July 28th, 2002

from the follow-your-affinities dept.
Gina Miller writes "A July 18, 2002 Brookhaven National Laboratory press release reports that researchers at North Carolina State University have developed a material (which was then tested at Brookhaven) with gold nanoparticles deposited in a gradient of decreasing density along a silica surface. The decreasing gradient of particles was formed because the particles bound to organosilanes that had previously been emitted as a vapor and then deposited in a gradient of decreasing density on the surface according to increasing distance from the emitter. The press release has what appear to be AFM images of the decreasing density of gold nanoparticles."

Dendrimers produce artificial antibodies

Posted by Jim Lewis on July 26th, 2002

from the molds-from-molecules dept.
RobertBradbury writes "Science Daily provides a nice summary of work at the University of Illinois at Urbana-Champaign in which a team of chemists have developed a process using dendrimers to produce artificial antibodies."

"Now if we can just get a design for a molecular sorting rotor to attach them to we would have one of the key components that one needs to build nanorobots like respirocytes."

Nanocatalysis is beginning to alter the economy

Posted by Jim Lewis on July 26th, 2002

from the here-and-now dept.
TimHarper writes "Nanocatalysis is one area of nanotechnology that is already beginning to alter the economics of energy production, and billion dollar deals have already been signed. The shift away from dependence on oil from the Persian Gulf region also has implications for the bargaining power of OPEC, and provides significant opportunities in the energy sector for both Russia and China. In the post-September 11th world, desire to reduce dependence on imported energy is hot topic both in Washington and Brussels, and nanocatalysis is starting to make this possible."

Infrared antenna for nano-size mapping

Posted by Jim Lewis on July 26th, 2002

from the phonons-and-photons dept.
Gina Miller writes "Using an instrument much like an atomic force microscope with a platinum tip as an antenna to focus an infrared laser beam, a group of German scientists was able to measure very strong reflection of the laser beam over nanometer-scale patches of scanned crystal surface when the frequency of the laser was very close to the vibration frequency of the crystal. This could lead to determining the composition of the surface to nanometer-scale resolution, or perhaps to building storage devices with 10-nm bits, equivalent to a storage density near 1 Tbit inch-2. See:" Infrared antenna for nano-size mapping of crystal vibrations

Advanced Materials and Nanotechnology: AMN-1 (conf

Posted by Jim Lewis on July 25th, 2002

Tony Garnock-Jones writes "The MacDiarmid Institute, a recently-establshed New Zealand Centre of Research Excellence, is organising an international conference on Advanced Materials and Nanotechnology, AMN-1, to take place in early 2003. Three Nobel Laureates, Professors Alan MacDiarmid, Alan Heeger and Hideki Shirakawa, have agreed to participate."

Government report takes bold look at future

Posted by Jim Lewis on July 25th, 2002

from the give-credit-where-credit-is-due dept.
In his column Unfogging the Future on Tech Central station, Foresight Director Glenn H. Reynolds writes about a new government report entitled Converging Technologies for Improving Human Performance (the subject of a Nanodot post July 13, 2002) as a salient example of something the government did right. Reynolds applauds the report's frank assessment that radical technological changes are coming, and its realization that delay in dealing with these changes may mean being overwhelmed by catastrophe.

Defenses against dangerous technologies

Posted by Jim Lewis on July 25th, 2002

from the let-us-reason-together dept.
Technology Fear Factor, by Daintry Duffy and Sari Kalin, originally published in Darwin Magazine May 2002. Published on KurzweilAI.Net July 21, 2002.

Three futurists — George Gilder, Ray Kurzweil, and Jaron Lanier — agree that emerging dangerous technologies will require smarter defenses, such as standards diversity, decentralized systems, a transparent society, better communications between factions, and mutually beneficial collaboration of business leaders.

Measuring sub-Angstrom displacements

Posted by Jim Lewis on July 24th, 2002

from the new-tools dept.
Gina Miller writes "A July 23, 2002 EE article, Finding the charge within angstroms, reports that a team from Munich has built a highly sensitive charge detector from the combination of a quantum dot with a nanomechanical device. The team is comprised of researchers from Ludwig-Maximilians University and the Walter-Schottky Institute. This device could support realtime scanning with resolutions down to the sub-Ångstrom level. According to the group leader, Prof Blick, 'This system allows for ultra-sensitive displacement detection, which is quite important for any scanning probe application.' Applications of the technique include communications electronics as filter elements and sensor components."

TNT2002 – Europes Largest Applied Nanotech Confere

Posted by Jim Lewis on July 24th, 2002

TimHarper writes "Trends in Nanotechnology 2002 09 Sep 2002 – 13 Sep 2002 – Santiago de la Compostela, Spain Europe's largest scientific and technical applied nanotechnology conference, "Trends in Nanotechnology" conference (TNT2002) will be held in Santiago de la Compostela, Spain. Keynote speakers from IBM, HP, Samsung, NASA and NEC will be presenting the latest applications of their nanotechnology reseach. For more information:"

Spending more but commercializing less?

Posted by Jim Lewis on July 24th, 2002

from the bang-for-the-buck dept.
An article in Red Herring dated July 12, 2002, Slow starts: Canada and Europe slouch toward nanotechnology blames the bureaucratic culture in Europe and in Canada for slowing efforts to commercialize nanotechnology, despite very sizeable public investments in nanotechnology research.

Better imaging for better nanofabrication?

Posted by Jim Lewis on July 23rd, 2002

from the seeing-what-you're-doing dept.
A news article in Scientific American, Scientists Create Smallest Ever Laser-Like Light Beam, describes a table-top apparatus that focuses 25-femtosecond pulses of visible light to create (using a process called high-harmonic generation) highly coherent femtosecond-scale pulses of extreme ultraviolet light, suitable for creating holograms of micron-scale objects.

Korean hopes focus on biotech and nanotech

Posted by Jim Lewis on July 22nd, 2002

from the seeking-growth dept.
Gina Miller writes "The Korea Times reports ROK to Emerge as 8th Largest Economy, July 17, 2002. " …the Korean government will be adopting industrial development strategies designed to place such promising sectors as biotechnology and nanotechnology on the global map." The article explains that Korea would like to become a leader (eighth by 2010) in the manufacturing and technology areas and the new government programs will help to attain these goals. Read previous Nanodot coverage April 9th, 2002"

Molecular machines might temporarily escape entropy

Posted by Jim Lewis on July 19th, 2002

from the Who-ordered-this? dept.
A group of Australian scientists has published experiments demonstrating that microscopic systems (such as a nanomachine) followed for short time periods (as long as a second) could sometimes violate the Second Law of Thermodynamics, that is, they extract useable energy from the temperature of their surroundings. In so doing, these systems become spontaneously more ordered and entropy decreases, in violation of the second law. It has long been known that the second law is subject to statistical fluctuations in very small systems (a few molecules), but it is surprising that such fluctuations occur in systems microns in length followed for a second or more, systems containing many billions of atoms. It would appear that these results have implications for micron-sized molecular machine systems: how microbes and other cells function, and how nanomachines should be designed to take into account that they could run backwards for short periods. For a concise summary, see the AIP Bulletin of Physics News, Pushing the Second Law to the Limit

Foresight advisor challenges ID requirement

Posted by Jim Lewis on July 19th, 2002

from the at-what-price-security? dept.
A prominent civil libertarian and member of the Foresight Board of Advisors has sued the U.S. government and two major airlines in favor of the right of U.S. citizens to travel anonymously: Suit challenges airline ID requirements

In a lawsuit filed in federal court in San Francisco, John Gilmore, co-founder of the Electronic Frontier Foundation, said that requiring ID from travelers who are not suspected of being a threat to airport security violates several amendments to the U.S. Constitution.