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Arbitrarily complex 3D DNA nanostructures built from DNA bricks

Thursday, December 6th, 2012

A set of 32-nucleotide single strand DNA bricks was designed so that each can interact independently with four other DNA bricks so that sets of hundreds of bricks can self-assemble into arbitrarily complex 25-nm 3D shapes, each comprising 1000 8-base pair volume elements.

Biological molecular motors programmed to run DNA chasis

Wednesday, October 17th, 2012

Two types of biological molecular motors that run in opposite directions along a protein track can be used in different arrangements to either move a complex DNA cargo along the track or engage in a tug-of-war.

Assembling biomolecular nanomachines: a path to a nanofactory?

Thursday, October 4th, 2012

A “cut and paste” method uses an atomic force microscope to assemble protein and DNA molecules to form arbitrarily complex patterns on a surface. Developing this approach to form enzymatic assembly lines could be a path toward a general purpose nanofactory.

Toward a method to design any needed catalyst?

Monday, August 6th, 2012

Computational insights into a fundamental organic synthesis reaction may lead to the ability to design a catalyst for any desired reaction.

Atomically precise nanoparticle provides better drug delivery

Tuesday, July 10th, 2012

Nanoparticles made from specific DNA and RNA strands, homogeneous in size, composition, and surface chemistry, proved superior to other nanoparticles in silencing gene expression in tumors in mouse experiments.

DNA tiles provide faster, less expensive way to fabricate complex DNA objects

Thursday, May 31st, 2012

A set of 310 short single-stranded DNA tiles, plus a few additional short sequences for the edges, has been used to form more than a hundred large, complex DNA objects.

Will piezoelectric graphene provide options for nanoscale manipulation?

Wednesday, 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.

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

Thursday, 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.

DNA motor navigates network of DNA tracks

Tuesday, 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.

Arrays of artificial molecular machines could lead to atomically precise nanotechnology

Thursday, 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.

Mechanical pressure produces atomically-precise, multifunctional 2D sheets

Monday, December 26th, 2011

Protein-like structures called peptoids can be formed into stable, free-floating nanosheets.

Geometry of DNA nanostructures used to program molecular recognition

Friday, November 25th, 2011

Adding a new molecular recognition code to structural DNA nanotechnology—a pattern of projecting and recessed blunt-end DNA helices can be used to code the assembly of DNA origami tiles into larger DNA nanostructures.

A modular molecular composite nanosystem for solar power

Tuesday, May 17th, 2011

A bacterial virus called M13 was genetically engineered to control the arrangement of carbon nanotubes, improving solar-cell efficiency by nearly one-third.

New software aids design of 3-D DNA structures

Thursday, May 12th, 2011

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

DNA nanotechnology builds 3D forms with complex curves (includes video)

Wednesday, April 20th, 2011

The capabilities of scaffolded DNA origami procedures have been expanded to construct arbitrary, two- and three-dimensional shapes.

One-molecule robot to be presented at January’s TEDxCaltech conference

Sunday, January 2nd, 2011

A one-molecule robot capable of following a trail of chemical breadcrumbs will be presented at TEDxCaltech-Feynman’s Vision: The Next 50 Years.

Making and opening a Mobius strip with DNA Kirigami

Tuesday, October 12th, 2010

Reconfiguring the topology of DNA nanostructures offers novel architectures for nanodevices.

DNA springs enable mechanical control of enzymatic reaction

Friday, October 8th, 2010

DNA springs mechanically control an enzymatic reactions by exerting force on specific parts of the enzyme molecule.

Self-assembly of carbon nanotubes into two-dimensional geometries using DNA origami templates

Tuesday, November 10th, 2009

Self-assembly of carbon nanotubes into two-dimensional geometries using DNA origami templates. Harnessing DNA origami to arrange CNTs.

Feynman’s Path to Nanotech (part 5)

Friday, July 10th, 2009

Is it Worth Starting Now? Surely, you will say, it would have been wonderful if back in 1959 people had taken Feynman seriously and really tried the Feynman path: we’d have the full-fledged paraphernalia of real, live molecular machinery now, with everything ranging from nanofactories to cell-repair machines. After all, it’s been 50 years. The [...]