Computer simulations have shown that graphene deposited on a silicon dioxide surface will be either a semiconductor or a metal depending on whether the underlying layer is terminated with oxygen atoms or passivated with hydrogen atoms.
Archive for the 'Computational nanotechnology' Category
Computational nanotech studies have shown that deliberate introduction of structural defects at specific sites in carbon nanotubes can guide electrons along specific paths, providing a way to fabricate complex electronic circuits from nanotubes.
Molecular dynamics simulations show that electron tunneling through nanoscale rotary motors based on carbon nanotube shafts may enable nanotech motors to rotate more than a million times faster than their biological counterparts.
Dr. David Baker, who with Dr. Brian Kuhlman was awarded the 2004 Foresight Nanotech Institute Feynman Prize for Theory, will be one of three winners of the 2008 Raymond and Beverly Sackler International Prize in Biophysics. Dr. Baker has been featured on Nanodot posts this year for inviting online gamers to aid in protein design [...]
Robert A. Freitas Jr. brings to our attention a major step on the road to advanced nanotech, published a couple weeks ago in Science (abstract). He writes: This paper reports purely mechanical-based covalent bond-making and bond-breaking (true mechanosynthesis) involving atom by atom substitution of silicon (Si) atoms for tin (Sn) atoms in an Sn monolayer [...]
Combining electrically conductive polymers, transition metal atoms, and spin-coating to form thin films could lead to solar cells with two major advantages that would make them more efficient at converting light to electricity.
Swedish scientists have developed a computer program to calculate Casimir forces between various types of nanostructured materials, which may help to determine whether significant friction problems exist in specific designs.
On the Editor’s Page at Medical DeviceLinkCom, Shana Leonard writes about the crucial need for design and modeling techniques to guide nanosystems development toward fabrication, and cites the Technology Roadmap for Productive Nanosystems. From “A Different Kind of Intelligent Design” Drawing from numerous workshops held from 2005 to 2007, Battelle (Columbus, OH) and the Foresight [...]
A recent review describes the advantages to nanotech of advances in electron microscopy that allow mapping electron states localized at or between atoms.
The emerging ability to control the sizes of these clusters to atomic precision affords new opportunities for designing novel catalysts.
Atoms or molecules could be pumped through the spinning inner CNT to form patterns of atoms or molecules—a nanotech inkjet printer.
Researchers have developed a method of producing titanium oxide crystals with more reactive surfaces.
Can online gamers add to the nanotech toolkit for perfecting the de novo design of proteins that do not exist in nature?
Preliminary theoretical calculations show that it might be possible to develop a nanotech application in which clusters of a few boron atoms connect very small graphene semiconductors to make nanoelectronic devices.
A new nanotech method of measuring “blurred” molecular motions promises to improve the accuracy of molecular motion simulations.
Snowbird, Utah is the place to be for nanotechnologists on April 22-25 for the 5th Annual Conference on Foundations of Nanoscience (FNANO08): Self-Assembled Architectures and Devices. Those of you who have attended Foresight research conferences will recognize a number of familiar names and lots of new ones. Mark Sims of Nanorex tells us that they [...]
By combining more precise core-shell nanoparticle synthesis techniques with electronic structure theory to predict the properties of nanoparticles, nanotechnology researchers have produced a better catalysts for fuel cells.
There’s still time — barely — to plan to attend next week’s 1st Annual Unither Nanomedical & Telemedical Technology Conference in Quebec. Co-chair is Martine Rothblatt, PhD, of Unither Biotech. Speakers include these names familar to Foresight members, as well as many nearer-term topics: Tad Hogg, PhD — Member of the Research Staff: Hewlett-Packard Laboratories, [...]
A major milestone along the protein design path to productive nanosytems and advanced nanotechnology has been achieved—the design by computational methods of enzymes that catalyze reactions for which biological enzymes do not exist.
A developing understanding of non-Watson-Crick interactions places RNA nanotech on a firmer foundation.