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Archive for the 'Nanotechnology' Category

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.

Foresight 1999 Distinguished Student wins Galactic Grant Competition

Posted by Jim Lewis on July 28th, 2015

Technology developed by Nanobiosym, founded by Anita Goel, to enable personalized diagnostic testing won the Grand Prize of the Nokia Sensing XCHALLENGE in 2013, and this month was awarded the top prize in the Galactic Grant Competition.

Conference video: Conformational and compositional dynamics of a molecular machine

Posted by Jim Lewis on July 8th, 2015

At the 2013 Conference Joseph Puglisi described how single molecule fluorescence techniques were used to study changes in the conformation and composition of the ribosome, a large biomolecular nanomachine, during the process of translation of genetic information.

Linking together small DNAs to build more diverse DNA nanostructures

Posted by Jim Lewis on July 2nd, 2015

Using the enzyme DNA ligase and small DNA strands as building blocks provides an efficient and less expensive path to a large variety of DNA scaffolds and other structures.

Toward advanced nanotechnology: Working solid state molecular shuttle

Posted by Jim Lewis on July 1st, 2015

A molecular ring shuttles back and forth between two positions on a molecular axle held rigidly inside a solid state molecular lattice made from a metal organic framework.

Wafer-scale atomically precise thin layers for nanotechnology

Posted by Jim Lewis on June 30th, 2015

By precise control of several factors, uniform high-performance monolayers of the semiconductor MoS2 have been obtained and used to fabricate field-effect transistors.