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Archive for the 'Artificial Molecular Machines' Category

Conference video: Assembly and Manipulation of Molecules at the Atomic Scale

Posted by Jim Lewis on August 29th, 2013

At the 2013 Conference the winner of the 2011 Feynman Prize for Experimental work presents STM studies showing how the manipulation of single molecules on a surface can yield insights to their mechanical, electronic, and optical properties, and be used in a controlled way to build pre-defined molecular architectures.

Next Foresight Conference on Nanotechnology in February 2014

Posted by Jim Lewis on August 28th, 2013

The Conference to be held February 7-9, 2014 in Palo Alto, California will emphasize the integration of nano-engineered devices and materials into larger, more complex systems.

RNA-protein motor for unidirectional movement of DNA in nanomachinery

Posted by Jim Lewis on April 1st, 2013

Revolution of DNA around a central channel, rather than rotation, is the method used by a viral molecular motor to package DNA. A structure facilitating bottom-up assembly may lead to roles in nanotechnology for these nanomotors.

Artificial molecular machine synthesizes a small peptide

Posted by Jim Lewis on January 28th, 2013

A small molecular machine based on a rotaxane molecule autonomously added three amino acids in a programmed order to a seed tripeptide to form a hexapeptide

Controlled stepwise rotation on a single atom bearing

Posted by Jim Lewis on January 21st, 2013

Electrons from a scanning tunneling microscope tip turn a five-arm rotor connected via a single ruthenium atom bearing to a tripod anchoring the molecular motor to a gold surface.

Two types of artificial muscle from nanotechnology

Posted by Jim Lewis on December 13th, 2012

One research group working with rotaxanes and another group working with carbon nanotubes have provided two very different solutions to the problem of producing motion via artificial muscles at different scales from the nano to the macro.

Optimal bond loads in designing molecular machines

Posted by Jim Lewis on December 11th, 2012

A study of a biological molecular machine has shown that the machine functions most effectively when it uses chemical bonds just barely strong enough to survive the power stroke of the machine.

Review of molecular machines for nanotechnology

Posted by Jim Lewis on October 5th, 2012

A brief article reviews several types of molecular machines that chemists have built to mimic biology and provide movement for future types of nanotechnology.

SAVE THE DATE: The 2013 Foresight Technical Conference

Posted by Jim Lewis on July 12th, 2012

The 2013 Foresight Technical Conference: Illuminating Atomic Precision will be held January 11-13, 2013 in Palo Alto, CA USA.

Nanomachines and molecular motors can make use of thermal noise

Posted by Jim Lewis on July 3rd, 2012

A theoretical study shows that although thermal noise cannot be used to produce useful motion by mesoscale or macroscale machines, it can be used by nanoscale machines without violating the second law of thermodynamics.

An expanded genetic alphabet could lead to more easily designed proteins

Posted by Jim Lewis on June 22nd, 2012

The demonstration that the process of DNA replication is more flexible than thought should make it easier to incorporate unusual amino acids into designed proteins, which might make it easier to design novel protein machines.

New Darpa program may accelerate synthetic biology path to advanced nanotechnology

Posted by Jim Lewis on May 26th, 2012

Darpa has launched a “Living Foundries” program to bring an engineering perspective to synthetic biology to greatly accelerate progress through standardization and modularization.

Adding to the toolbox for making complex molecular machines

Posted by Jim Lewis on April 4th, 2012

A set of rationally engineered transcriptional regulators for yeast will make it easier to build complex molecular machine systems in yeast, some of which may become useful additions to pathway technologies for atomically precise manufacturing and productive nanosystems.

Nanotechnology-based sensor does rapid reads of single DNA molecule

Posted by Jim Lewis on April 1st, 2012

A combination of a molecular motor protein and a nanopore protein has been harnessed for rapidly sequencing single DNA molecules.

DNA nanotechnology-based nanorobot delivers cell suicide message to cancer cells

Posted by Jim Lewis on March 8th, 2012

Functioning DNA nanorobots to deliver specific molecular signals to cells were designed by combining DNA origami, DNA aptamers, and DNA logic gates.

Nanotechnology, digital fabrication, and innovation at TED

Posted by Jim Lewis on March 2nd, 2012

A talk at TEDxBerkeley includes nanotechnology among the options for digital fabrication, one of five new rules of innovation.

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.

DNA motor navigates network of DNA tracks

Posted by Jim Lewis on January 31st, 2012

Scientists at Kyoto University and the University of Oxford have combined DNA origami and DNA motors to take another step toward programmed artificial molecular assembly lines.

Advanced nanofactories in twenty years?

Posted by Jim Lewis on January 12th, 2012

An article in The Guardian quotes Christine Peterson and Robert Freitas on the vision of molecular manufacturing. Freitas is quoted as expecting that the development of nanofactories could be done in 20 years for “on the order of” one billion dollars.

Artificial molecular motor controls molecular transformation

Posted by Jim Lewis on December 30th, 2011

A four-step unidirectional molecular motor driven by light and temperature changes catalyzes different chemical reactions at different steps of its rotary cycle.