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Archive for the 'Nanotech' Category

Foresight Institute Awards Feynman Prizes in Nanotechnology to Amanda S. Barnard, Joseph W. Lyding

Posted by Jim Lewis on April 23rd, 2015

The Theory Prize was given for research into diamond nanoparticles; the Experimental Prize was given for development of scanning tunneling microscope (STM) technology.

Solid-phase synthesis of custom-made DNA nanotubes

Posted by Jim Lewis on April 9th, 2015

Single-molecule spectroscopy makes possible adding one rung at a time to a foundational rung grafted to a surface to make a long nanotube scaffold of predetermined sequence.

Flexible supercapacitor from stacked nanomaterial

Posted by Jim Lewis on April 8th, 2015

A nanoporous form of graphene made by burning off other elements from an inexpensive polymer has been used to fabricate flexible supercapacitors via a process that can be scaled to industrial quantities to provide energy storage for wearable, flexible electronics.

DNA nanoswitches open window on molecular interactions

Posted by Jim Lewis on April 5th, 2015

Positioning two or more molecules along a long DNA strand can cause the DNA molecule to adopt different shapes if the molecules interact. Quickly and cheaply separating these shapes by a simple gel electrophoresis assay provides a wealth of information about how the molecules interact.

New scaffold for nanotechnology engineered from amyloid-like proteins

Posted by Jim Lewis on April 4th, 2015

Design and computational simulation of amyloid proteins of diverse functions from diverse sources enable the self-assembly of proteins that could provide scaffolds for diverse applications.

Cotranscriptional folding of single RNA strand added to nanotechnology toolkit

Posted by Jim Lewis on March 31st, 2015

RNA origami brings new dimensions to nucleic acid nanotechnology by exploiting the much greater variety of RNA structural motifs (compared to DNA) to do what cannot easily be done with DNA origami, like fold into predetermined nanostructures rapidly while being transcribed.

Automated synthesis expands nanotechnology building block repertoire

Posted by Jim Lewis on March 24th, 2015

Iterative coupling, purification, and cyclization of a large collection of organic building blocks promises a vast array of complex small and medium sized molecules as candidates for drug discovery, catalysis, and nanotechnology.

Targeted nanoparticles deliver molecules to resolve atherosclerotic inflammation

Posted by Jim Lewis on March 9th, 2015

In tests in a mouse model of advanced atherosclerosis, core-shell nanoparticles, composed of block copolymers and targeted to sites of inflammation and vascular injury, delivered a bioactive peptide that improved key properties of advanced plaques.

Atomically precise manufacturing as the future of nanotechnology

Posted by Jim Lewis on March 8th, 2015

A commentary over at Gizmodo argues that ideas about molecular manufacturing that sounded like science fiction in 1986 now sound more like science fact.

Are nanorobots and atomically precise manufacturing becoming mainstream nanotechnology?

Posted by Jim Lewis on March 7th, 2015

The idea that nanorobots fabricated by atomically precise manufacturing processes are a likely part of our future, and that this is a good thing, is appearing more frequently, largely as a result of Drexler’s recent book Radical Abundance.

Small, fast, electrically-driven nanomotors

Posted by Jim Lewis on March 5th, 2015

Bulk nanoscale technologies were used to create three-segment nanowires of gold and nickel, and magnetic bearings of gold, nickel, and chromium. Combinations of DC and AC electric fields were used to assemble nanomotors that can spin at speeds up to 18,000r.p.m., and for up to 15 hours.

Designing mechanical functions into DNA nanotechnology

Posted by Jim Lewis on March 3rd, 2015

An overview of three decades of progress in DNA nanotechnology emphasizes bringing programmed motion to DNA nanostructures, including efforts to incorporate design principles from macroscopic mechanical engineering.

Nanotechnology making 3D transistors by directed molecular self-assembly

Posted by Jim Lewis on March 1st, 2015

IBM researchers engineered a class of molecules called block copolymers to self-assemble into dense patterns to extend the capabilities of photolithography.

Mixing two types of nanoparticle triggers structure change

Posted by Jim Lewis on February 5th, 2015

Mixing two different types of cylindrical nanoparticles causes them to reorganize into smaller spherical nanoparticles. A mechanism to release drugs only inside cells that internalize both types?

Penta-graphene a new form of carbon for chemistry and nanotechnology

Posted by Jim Lewis on February 4th, 2015

Computational simulations demonstrate that pentagonal tiling to give a variant of graphene based on pentagons rather than on hexagons is dynamically, thermally, and mechanically stable.

Adding layer to a piezoelectric nanostructure increases output voltage

Posted by Jim Lewis on February 3rd, 2015

Applications of nanotechnology to wearable electronics and other portable devices will benefit from the discovery that adding an insulating layer to a piezoelectric nanostructure increases the output voltage by up to 200 times.

Simple nanotechnology modification of alumina surface discourages bacteria

Posted by Jim Lewis on February 2nd, 2015

A simple method of producing nanoporous alumina surface discourages bacteria from attaching and forming biofilms, with potential applications in medicine, dentistry, and food processing.

A tunable hinge joint for DNA nanotechnology

Posted by Jim Lewis on January 31st, 2015

Variable length single-stranded DNA springs determine how far a hinge of double-stranded DNA joining two stiff sections of DNA origami can bend.

Structural DNA nanotechnology with programmed motions

Posted by Jim Lewis on January 28th, 2015

Scaffolded DNA origami is combined with hinges of single- or double-stranded DNA to built simple machines parts that have been combined to program simple to complex motions.

What sort of abundance will nanotechnology bring?

Posted by Jim Lewis on January 11th, 2015

One example is presented of how well the meme is spreading that nanotechnology will evolve toward atomically precise manufacturing that will in turn bring forth a world of abundance.