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Archive for the 'Computational nanotechnology' Category

Will piezoelectric graphene provide options for nanoscale manipulation?

Posted by Jim Lewis on April 25th, 2012

Calculations using density functional theory have demonstrated that graphene can be made piezoelectric by adsorbing atoms or molecules on one surface, or by adsorbing different atoms or molecules on each surface.

Novel RNA structural motifs expand tool kit for RNA nanotechnology

Posted by Jim Lewis on February 26th, 2012

New computational methods to explore the rapidly expanding collection of high resolution three-dimensional RNA structures reveal new RNA structural motifs, identifying additional building blocks for complex RNA nanostructures.

Machine learning may improve molecular design for nanotechnology

Posted by Jim Lewis on February 22nd, 2012

A set of machine learning programs can now predict properties of small organic molecules as accurately as can calculations based upon the Schrödinger equation, but in milliseconds rather than hours.

Crowd-sourced protein design a promising path to advanced nanotechnology

Posted by Jim Lewis on January 24th, 2012

Foldit game players have again out-performed scientists in protein design, this time improving the design of a protein designed from scratch to catalyze Diels-Alder cycloadditions.

Arrays of artificial molecular machines could lead to atomically precise nanotechnology

Posted by Jim Lewis on December 29th, 2011

A tutorial review available after free registration presents a theory-based exploration of the difficulty in moving from simple molecular switches to arrays of artificial molecular machines capable to doing substantial, useful external work.

RNA CAD tool for synthetic biology may facilitate RNA nanotechnology

Posted by Jim Lewis on December 27th, 2011

RNA CAD tools developed for RNA-regulated control of gene expression in synthetic biology successfully engineered metabolic pathways in bacteria. Will engineering RNA-based genetic control systems lead to design tools for other RNA-based molecular machine systems?

Tutorial review of the promise of artificial molecular machines

Posted by Jim Lewis on December 11th, 2011

A tutorial review addresses the distinction between the many simple artificial molecular devices that are currently available and truly effective artificial molecular machines that would mimic the ubiquitous molecular machines present in living systems.

Lecture by Eric Drexler at Oxford on physical law and the future of nanotechnology (video)

Posted by Jim Lewis on December 6th, 2011

In a lecture at Oxford Eric Drexler argued that atomically precise manufacturing will be the next great revolution in the material basis of civilization, and discussed how we can establish reliable knowledge about key aspects of such technologies.

Using DNA as bonds to build new materials from nanoparticles

Posted by Jim Lewis on October 31st, 2011

Varying the length of the DNA used to connect the nanoparticles provides for a wide variety of nanoparticle sizes and crystal symmetries.

Nanotechnology using designed peptides to build supramolecular structures on surfaces

Posted by Jim Lewis on September 29th, 2011

An algorithm helps design peptides that will self-assemble on a given surface to produce a supramolecular structure of desired geometry.

2011 Foresight Institute Feynman Prize deadline is September 30, 2011

Posted by Jim Lewis on July 25th, 2011

Submit your own work or nominate a colleague for the 2011 Foresight Institute Feynman Prizes.

Handling flexible parts in RNA nanotechnology

Posted by Jim Lewis on June 30th, 2011

New computational method screens for small molecules that bind to RNA molecules that move through a variety of conformations.

Does quantum tunneling complicate theoretical studies of nanotechnology?

Posted by Jim Lewis on June 16th, 2011

Does the recent discovery that quantum tunneling controls a chemical reaction of a carbene complicate theoretical studies of nanotechnology, especially of diamond mechanosynthesis?

Theoretical work establishes structural stability of nanoscale diamond structures

Posted by Jim Lewis on June 10th, 2011

Computational studies show that small diamond structures of the type that might serve as nanoparts in diamondoid molecular machinery are structurally stable.

Computational circuit built from 74 small DNA molecules (with video)

Posted by Jim Lewis on June 9th, 2011

A biochemical circuit built from 74 small DNA molecules demonstrates an approach that may enable embedded control of molecular devices.

Statistical noise characterized in interactions of atoms with nanomachines

Posted by Jim Lewis on June 3rd, 2011

The interactions of xenon atoms with a nanoelectromechanical system have now been measured to characterize the statistical noise caused by atomic fluctuations.

Foresight@Google: Full Program of Speakers posted!

Posted by Christine Peterson on June 2nd, 2011

We are proud to announce our final conference program for Foresight@Google‘s 25th Anniversary Conference Celebration, held June 25-26 in Mountain View, CA.  For $50 off registration use code: NANODOT This weekend – full of plenary talks, panels, and breakout sessions – is a unique opportunity to be stimulated, enlightened and inspired by direct interaction with [...]

Computer simulation of evolution of primordial molecular machine

Posted by Jim Lewis on June 1st, 2011

A Monte-Carlo simulation shows that a simple self-replicating RNA-like molecule in a specific protective environment could evolve the ability to translate a genetic code to produce peptides.

TODAY is the last day for early rate on Foresight@Google

Posted by Christine Peterson on May 17th, 2011

Midnight tonight Pacific time is the deadline for the early registration rate on Foresight@Google, our 25th Anniversary Conference and Celebration. Check it out here: http://foresight.org/reunion Past participants have said: “This is mind candy for my soul. Having attended for two years now, this event stands alone in my mind as an opportunity to explore new horizons, [...]

New software aids design of 3-D DNA structures

Posted by Jim Lewis on May 12th, 2011

New software for scaffolded DNA origami makes it easier to predict what shape will result from a given DNA template.