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Archive for the 'Nanotechnology' Category

Nanotechnology carries gene editing package into cells

Posted by Jim Lewis on October 2nd, 2015

Hijacking a viral method of replicating circular genomes, ball-of-yarn-like DNA clews are used to transport the protein and guide RNA molecules needed for gene editing into the cell nucleus.

DNA nanotechnology guides assembling cells into 'Organoids'

Posted by Jim Lewis on September 30th, 2015

DNA strands decorating cell membranes like ‘Velcro’ program the adhesion of cells to other cells or to extracellular matrices to build tiny tissue models.

Catalytic micromotors demonstrate carbon dioxide removal from water

Posted by Jim Lewis on September 29th, 2015

A micromotor covered with the enzyme carbonic anhydrase zips through water rapidly converting dissolved carbon dioxide to the bicarbonate ion, which can then be precipitated as calcium carbonate.

Atomically precise boron doping of graphene nanoribbons

Posted by Jim Lewis on September 28th, 2015

The ability to dope graphene nanoribbons with boron atoms to atomic precision opens a range of possible new applications, from chemical sensing to nanoelectronics to photocatalysis to battery electrodes.

Parallel to protein folding improves DNA origami process

Posted by Jim Lewis on September 27th, 2015

Designing a small DNA origami that can fold in several almost equivalent ways demonstrates how understanding and guiding the folding pathway can improve the efficiency of the folding process, potentially leading in more complex situations to higher yields of the desired nanostructure and fewer misfolded structures.

Review of artificial molecular machines and their controlled motions

Posted by Jim Lewis on September 18th, 2015

An extensive review of artificial molecular machines, their large-amplitude motions, and the changes these motions produce, emphasizes small molecules and the central role of chemistry in their design and operation.

Conference video: Bringing Computational Programmability to Nanostructured Surfaces

Posted by Jim Lewis on September 11th, 2015

Dr. Alex Wissner-Gross surveyed the interplay between programmability of bits and atoms in the development of technology, asking how the recent successes with programming bits can help nanotechnology progress in programming atoms.

Addressable molecular machines arranged in a porous crystal

Posted by Jim Lewis on September 10th, 2015

Simple molecular switches based upon bistable mechanically interlocked molecules can be incorporated within pre-assembled metal organic frameworks and addressed electrochemically.

Overview of molecular machines documents recent progress

Posted by Jim Lewis on September 4th, 2015

A review of molecular parts that act as switches, motors, and ratchets illuminates similarities between artificial and biological molecular machines and argues that useful applications are coming.

Nanotechnology provides sensors for liver-on-chip drug testing

Posted by Jim Lewis on September 2nd, 2015

Adding nanotechnology-based optoelectronic sensors to human cells cultured on a chip keeps the cells healthy long enough to replace animal testing with a human liver-on-a-chip.

Femtosecond imaging with near nanometer spatial resolution

Posted by Jim Lewis on August 31st, 2015

Analysis of multiple diffraction images provides high contrast, high quality, full field 3D imaging of surfaces illuminated by extreme ultraviolet photons from a tabletop laser.

A tunable bandgap by doping a few atomic layers of black phosphorous

Posted by Jim Lewis on August 29th, 2015

A vertical electrical field from dopant atoms of potassium added to the surface of a few stacked layers of phosphorene tunes the band gap of black phosphorous, possibly leading to novel electronic and optoelectronic devices.

Novel wireframe nanostructures from new DNA origami design process

Posted by Jim Lewis on August 18th, 2015

A new set of design rules enables constructing any wireframe nanostructure, which may lead to new medical applications and new nanomachines.

Conference video: Artificial Biochemistry with DNA

Posted by Jim Lewis on August 13th, 2015

Modeling DNA strand displacement cascades according to three simple rules can in principle mimic the temporal dynamics of any other chemical system, presenting a method to model regulatory networks even more complicated than those of biology.

Another nanotechnology computer memory breakthrough from Feynman Prize winner

Posted by Jim Lewis on August 12th, 2015

A novel nanostructured material based on tantalum oxide could make possible non-volatile crossbar array memories that store up to 162 gigabits in 3-D memory stacks.

Ribosome subunits tethered to make versatile artificial molecular machine

Posted by Jim Lewis on August 11th, 2015

Functional ribosomes with subunits engineered to not separate at the completion of each protein translation cycle make possible engineering systems to make a variety of novel polymers with novel properties.

Automated design of polyhedral meshes for DNA origami

Posted by Jim Lewis on August 7th, 2015

An automated design process folds arbitrary meshes to produce DNA origami structures difficult to design by previous methods, including more open structures that are stable in ionic conditions used in biological assays.

Arranging molecular chromophores on DNA brick nanobreadboards

Posted by Jim Lewis on August 6th, 2015

Nanobreadboards made of DNA bricks provide twice the positional precision, twice the packing density, and faster prototyping than do alternative means to arrange functional molecules.

Facilitating structural DNA nanotechnology with non-aqueous solvents

Posted by Jim Lewis on August 2nd, 2015

Recent research demonstrates that certain non-aqueous solvents can not only be used to assemble DNA nanostructures, but offer certain advantages over conventional aqueous solvents.

Foresight co-sponsors Berkeley Bench to Market event

Posted by Jim Lewis on July 30th, 2015

To educate potential entrepreneurs on strategies for moving discoveries from the benchtop to successful commercialization, Foresight co-sponsored an event in the “Ph.D. to Startup” Workshop Series of the Berkeley Postdoc Entrepreneur Program.