A prototype system to produce chemicals and fuels from sequestered carbon dioxide, water, and sunlight uses semiconductor nanowires to produce electron-hole pairs, which are then used by two types of bacteria to produce oxygen and a variety of useful chemical products.
Archive for the 'Research' Category
A new form of carbon produced by very slowly releasing benzene compressed at 200,000 times atmospheric pressure may be the strongest material possible.
Gold nanotubes engineered to a specified length, modified surfaces, and to have other desirable characteristics showed expected abilities to enter tumor cells in laboratory studies, and to distribute to tissues within live mice as intended.
The Theory Prize was given for research into diamond nanoparticles; the Experimental Prize was given for development of scanning tunneling microscope (STM) technology.
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.
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.
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.
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.
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.
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.
A commentary over at Gizmodo argues that ideas about molecular manufacturing that sounded like science fiction in 1986 now sound more like science fact.
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.
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.
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?
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.
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.
A simple method of producing nanoporous alumina surface discourages bacteria from attaching and forming biofilms, with potential applications in medicine, dentistry, and food processing.
Variable length single-stranded DNA springs determine how far a hinge of double-stranded DNA joining two stiff sections of DNA origami can bend.
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.
To measure in-plane piezoelectric stress, an MoS2 film was suspended on HSQ posts and clamped by two Au electrodes. When the film was indented with a scanning AFM probe, the induced stress changed the load on the cantilever, which was observed by the deflection of a laser beam. Credit: Berkeley Lab