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Archive for March, 2011

Bottom Up as a next step within Top Down

Posted by Jim Lewis on March 30th, 2011

Using proprietary block co-polymer technology, directed self-assembly allows adding block co-polymers that assemble themselves into regular arrays on the surface of a silicon wafer that had been patterned using lithography.

Will more efficient protein folding program advance nanotechnology?

Posted by Jim Lewis on March 29th, 2011

MIT scientists have devised much more efficient procedures for modeling protein folding in order to be able to model the folding of the flood of proteins sequences made available by modern genome sequencing methods.

Physicist and television host sees future for nanotechnology and AI

Posted by Jim Lewis on March 24th, 2011

In a review of physicist and television host Michio Kaku’s latest book, Foresight advisor Glenn Reynolds finds reason for optimism, but also cause for concern in the career choices of today’s brightest minds.

Mechanical manipulation of silicon dimers on a silicon surface (video)

Posted by Jim Lewis on March 23rd, 2011

UK scientists use mechanical force to manipulate silicon dimers on a silicon surface as a first step toward automated atomically precise manufacture of three-dimensional nanostructures.

AFM visualization of molecular robot moving along DNA scaffold (with video)

Posted by Jim Lewis on March 21st, 2011

Researchers in the UK and Japan use atomic force microscopy to visualize a DNA molecular robot moving along a 100-nm DNA track.

Is policy uncertainty the cause of anemic growth in nanotechnology innovation?

Posted by Jim Lewis on March 17th, 2011

Will proposals to establish criteria for green nanotechnology foster growth of nanotechnology innovation?

Controlling the orientation and stretching of DNA attached to a surface

Posted by Jim Lewis on March 15th, 2011

A shear flow processing method has been developed to control the surface attachment and orientation of DNA molecules to use for DNA-organic semiconductor molecular building blocks.

Positional control of chemical reaction a step toward advanced nanotechnology

Posted by Jim Lewis on March 11th, 2011

A step toward advanced nanotechnology has been achieved by using attachment to a surface and confinement by surrounding molecules to make two molecules react to form a product that would not form if they were free to react in solution.

Work theoretically extracted from molecular motor

Posted by Jim Lewis on March 10th, 2011

Computational work links optically-induced molecular shape change to change in DNA structure to extract useful work.

Atomically precise graphene nanotechnology

Posted by Jim Lewis on March 8th, 2011

Sputtering a pattern of zinc atoms on a graphene surface, followed by an acid rinse to remove the zinc, also removes exactly one atomic layer of graphene from where ever the graphene was covered with zinc atoms, forming a pattern on the graphene surface that is atomically precise in the vertical dimension. Resolution in the horizontal dimensions is determined by the mask used to sputter zinc.

Self-assembly of a molecular piston

Posted by Jim Lewis on March 4th, 2011

A French and Chinese collaboration has designed a molecular piston that self-assembles to form a complex stable enough that disassembly is very slow compared to the sliding motion of the piston.

Protein folding is a quantum transition

Posted by Jim Lewis on March 3rd, 2011

Chinese scientists demonstrate that protein folding is a quantum transition between torsion states on a polypeptide chain.

Does nanotechnology need PR?

Posted by Jim Lewis on March 2nd, 2011

Does nanotechnology need more energetic PR, and if so, what kind?