from the let-your-imagination-fly dept.
An Anonymous Coward writes "MIT's Technology Review printed an interesting Q&A session with Richard E. Smalley, the founder of the "buckyball" and nanotech guru, asking what he sees in the nanotube future."
Read More for some quotes.
from the bringing-bottom-up-alive dept.
PatrickUnderwood noted a BBC News article "Synthetic Virus Nearing Reality" in which Professor Clyde Hutchinson of the University of North Carolina and The Institute of Genomic Research, speaking at the AAAS meeting, predicts the ability to build a virus from scratch within five years. The article describes how this is a step along the way for the "Minimal Genome Project." The writer spends much of the story trying to link this to concerns about bioweapons, but gets told that "There's enough bad stuff out there now. So far, there is no reason to believe that this technology is going to make things any worse."
from the tinker-toys-taking-off dept.
Charles Vollum writes "Researchers at UCLA have come up with a reconfigurable molecular switch that works in a solid state at room temperature." According to a UPI article. " 'We feel that we truly have a line-of-site toward manufacturing an extremely powerful and efficient molecular based computing machine,' said team leader James Heath, professor of chemistry at UCLA and scientific co-director of the recently created California NanoSystems Institute."
from the twice-as-nice-for-bottom-up dept.
In Wiring Up Nanoelectronics, in MIT's Technology Review, Alan Leo writes "In the race to create ever-tinier electronic devices, nanowires are looking like a better bet. This month a team of Harvard researchers disclosed that they had created several functional nanoscale semiconductor devices, including the world's smallest bipolar transistor. Using silicon nanowires, semiconductive filaments only 20 nanometers wide, researchers in the lab of Harvard professor Charles Lieber also built a nanoscale diode and an inverter, the first devices ever assembled from both positive- and negative-type nanoscale semiconductors."
from the Bt-corn-strikes-again dept.
VAB writes "MSN is running a story about GE planting regulation compliance by farmers. Basically, a survey of 501 farmers revealed that about 29% (or close to a third) of them failed to follow FDA regulations related to their planting of Monsanto's genetically engineered Bt corn. …He notes the earlier problems with Bt corn and asks "Are all of these GE technology stewardship failures a bad sign for the future impact of MNT?"Read more for the rest of his comment.
from the first-assembler-in-vacuum-or-liquid? dept.
Senior Associate Alison Chaiken writes "A recent new message from the ever-wonderful (and free) "Physics News Update" highlights progress in the developing field of "atom optics". When last we left our heroes, Jurg Schmiedmayer and colleagues from the University of Innsbruck had used electromagnetic fields and logic circuits on an IC to guide beams of atoms with high resolution, implying an obvious extension to a computer-controllable high-precision atom placement technique. Now several groups in Europe have come up with new innovations that could lead to the "atomic ink-jet printer" and the "atom-coupled device." Once folks start moving Bose-Einstein condensates this way, all kinds of exciting advanced fabrication techniques may become possible. I'm still betting that the first "assembler" will be an ultra-high vacuum chamber with a bunch of lasers and well-controlled electromagnetic fields. I'd be thrilled if all you organic chemists can prove me wrong!" Read More for the Physics News Update article.
from the what-is-human dept.
In a story originally from the LA Times, Pope John Paul II defines death as "the complete and irreversible cessation" of brain activity. This would seem to indicate that, eventually, the Roman Catholic Church will choose to view patients entering and in cryonic suspension as being alive; this would fit with their general "when in doubt, be generous to marginal cases" position. This can serve as a reminder to the cryonics organizations that an awkward gap may appear in financial arrangements for cryonics, when life insurance no longer covers the cost, but medical insurance has not yet added this coverage. Perhaps we need a new type of policy entirely.
from the we're-starting-up-the-slope dept.
A collaborative team of engineers and neuroscientists at Brown University in Providence, RI, plan to develop nanoelectronics systems to monitor brain activity. According to a press release, the group's proposal is to create a tiny device that would emit light to stimulate brain cells and record light from brain cells, analogous to a camera. Using electronic structures 500 times smaller than the width of a human hair, six Brown University professors plan to explore the function of the human brain under a $4.25-million grant from the U.S. Defense Department. And they make some interesting comments about the long term potential of their work.
from the atomic-age-MNT??? dept.
Neutron scattering has been used to quantify thermal positional disorder in proteins. In myoglobin, there is a transition at ~200K from a "harmonic" regime where all the atoms are trapped in single potential wells to an anharmonic regime where jumps between wells become important. The anharmonic regime is important for the biological function of myoglobin (O2 binding), but may cause problems for use of proteins as mechanical elements in nanotechnology.
from the sing-repeatedly-"It-Was-an-RNA-World-After-All" dept.
Foresight chairman EricDrexler points out this story from Chemical & Engineering News: "The best evidence yet that, before there were proteins, there was once a world in which RNA both provided genetic information and catalyzed chemical reactions comes from a trio of papers in the current issue of Science. In a tour de force of X-ray crystallography, chemists at Yale University have located most of the atoms in the gigantic apparatus that cells use to link amino acids together into proteins. The heart of the apparatus where peptide bonds form, they find, is composed entirely of RNA." See also The RNA World book.
