three-dimensional – Page 2 – Shamskm: A site to exchange knowledge and solutions

Building Molecular ‘Cages’ to Fight Disease

By Guest PostJune 9, 2012Scienceartificial vaccines, bioinformatics, biomedical engineering, building blocks, circulation, david baker, drug, drug delivery, duilio cascio, human like proteins, lego blocks, medicine, michael sawaya, molecular biology, molecular cages, molecular structure, nanoscale materials, neil king, puzzle pieces, specialized proteins, tangles of ribbon, three-dimensional, tiny structures, todd yeates, traditional vaccine, tumor cells, ucla, university of washington, virus derived proteins, yen ting lai

UCLA-created nanoscale protein containers could aid drug, vaccine delivery

UCLA biochemists have designed specialized proteins that assemble themselves to form tiny molecular cages hundreds of times smaller than a single cell. The creation of these miniature structures may be the first step toward developing new methods of drug delivery or even designing artificial vaccines.

“This is the first decisive demonstration of an approach that can be used to combine protein molecules together to create a whole array of nanoscale materials,” said Todd Yeates, a UCLA professor of chemistry and biochemistry and a member of the UCLA–DOE Institute of Genomics and Proteomics and the California NanoSystems Institute at UCLA. (more…)

Researchers ‘Print’ Polymers That Bend Into 3-D Shapes

By Guest PostMarch 14, 2012Science3d shape, amherst, christian santangelo, daryl hess, national science foundation, photographic techniques, photolithography, photomask, polymer, robotics, ryan hayward, three-dimensional, two dimensional sheets, ultraviolet light, university of massachusetts, uv

*Technique could be used to direct growth of blood vessels or tissues in the laboratory*

Christian Santangelo, Ryan Hayward and colleagues at the University of Massachusetts Amherst recently employed photographic techniques and polymer science to develop a new technique for printing two-dimensional sheets of polymers that can fold into three-dimensional shapes when water is added. The technique may lead to wide ranging practical applications from medicine to robotics

The journal Science publishes the research in its March 9 issue. (more…)

Self-Assembling Nanorods: Berkeley Lab Researchers Obtain 1, 2 and 3D Nanorod Arrays and Networks

By Guest PostFebruary 6, 2012Sciencealexander mastroianni, block copolymer, cadmium sulfide, copolymer, cube, electronic device, kari thorkelsson, lamellar microdomain, macroscopic structure, mechanical properties, microtechnology, morphology, nanocomposite, nanocrystal, nanorod, nanorod polymer composites, ncem, peter ercius, plasmonic, semiconductor, set of function, supramolecule, tetrapod, three-dimensional, ting xu, transmission electron micrograph

A relatively fast, easy and inexpensive technique for inducing nanorods – rod-shaped semiconductor nanocrystals – to self-assemble into one-, two- and even three-dimensional macroscopic structures has been developed by a team of researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab). This technique should enable more effective use of nanorods in solar cells, magnetic storage devices and sensors. It should also help boost the electrical and mechanical properties of nanorod-polymer composites.

Leading this project was Ting Xu, a polymer scientist who holds joint appointments with Berkeley Lab’s Materials Sciences Division and the University of California (UC) Berkeley’s Departments of Materials Sciences and Engineering, and Chemistry. Xu and her research group used block copolymers – long sequences or “blocks” of one type of monomer bound to blocks of another type of monomer – as a platform to guide the self-assembly of nanorods into complex structures and hierarchical patterns. Block copolymers have an innate ability to self-assemble into well-defined arrays of nano-sized structures over macroscopic distances. (more…)

Intricate, Curving 3D Nanostructures Created Using Capillary Action Forces

By Guest PostOctober 20, 2010Science3d, 3d nanotube structures, a john hart, acetone condense, aircraft, bending petals, capillary action, capillary forming, carbon nanotubes, concentric rings, drinking straw, evaporate, gravity, john hart, liquids, microdevices, miniature, phenomenon, spacecraft, three-dimensional, twisting spires, university of michigan

Twisting spires are one of the 3D shapes researchers at the University of Michigan were able to develop using a new manufacturing process. Image credit: A. John Hart

ANN ARBOR, Mich

.— Twisting spires, concentric rings, and gracefully bending petals are a few of the new three-dimensional shapes that University of Michigan engineers can make from carbon nanotubes using a new manufacturing process.

The process is called “capillary forming,” and it takes advantage of capillary action, the phenomenon at work when liquids seem to defy gravity and spontaneously travel up a drinking straw.

The new miniature shapes have the potential to harness the exceptional mechanical, thermal, electrical, and chemical properties of carbon nanotubes in a scalable fashion, said A. John Hart, an assistant professor in the Department of Mechanical Engineering and in the School of Art & Design.

The 3D nanotube structures could enable countless new materials and microdevices, including probes that can interface with individual cells, novel microfluidic devices, and lightweight materials for aircraft and spacecraft. (more…)

Tag Archives: three-dimensional

Building Molecular ‘Cages’ to Fight Disease

Researchers ‘Print’ Polymers That Bend Into 3-D Shapes

Self-Assembling Nanorods: Berkeley Lab Researchers Obtain 1, 2 and 3D Nanorod Arrays and Networks

Intricate, Curving 3D Nanostructures Created Using Capillary Action Forces