... initial thickness, a point is reached where the polymer chains change the way they interact with their neighbors. ... very thin films, the polymer chains can no longer intertwine, and become like isolated ...
... -CNRS institute in Toulouse - has succeeded in lifting single polymers from a gold surface, similar to chains, and in measuring their electrical and mechanical properties during this process. The ...
A force-sensitive chemical moiety embedded in a polymer chain triggers a colour change when put under pressure
... is the topic of the PNAS article.
The scientists created novel polycations. A polycation is a polymer chain with positive charges, which is not too unusual. DNA itself is a polyanion, a polymer ...
... is when hydrated at near-neutral pH, such as water. Polymer films assembled at higher pH (up to 6) are stiffer because the polymer chains crosslink readily and the polymers do not swell too much; ...
... , tiny capsules whose outer shell is made of special polymer building blocks. Their special trick: the polymer chains are equipped with side chains bearing glucose units that wind up ...
... Tremel.
At first, the researchers in Mainz were puzzled as to why the adhesive strength of the polymer chains was largely independent of the number of adhesive links. "Normally, we imagine that an ...
... and LEDs. When these conductive polymers absorb light, the energy moves along and among the polymer chains before it is converted to electrical charges.
"One of the biggest obstacles to organic ...
... themselves into a nearly perfect crystalline packing of the polymer chains in each thin layer, Hiltner says. ... co-extrusion process that takes two polymer melts and combines them as layers, multiplies ...
... that the molecules in the thin film of block copolymers - two or more chemically dissimilar polymer chains linked together - will self-assemble into an extremely precise, equidistant pattern when ...
... inorganic nanoparticle at the core surrounded by a bristle-like layer of hydrophilic polymer chains. The inorganic nanoparticles are made of cadmium selenide and cadmium sulfide. Polyethylene oxide ...
... to an ingenious experiment using a scanning tunneling microscope, the researchers have characterized individual polymer chains of known length, up to 20 nanometers long. They confirm what is predicted ...
... catalyst to initiate a variety of chemical reactions, including polymerizations (formation of polymer chains from small molecular building blocks called monomers).
Self-repairing materials
This ...
(PhysOrg.com) -- Carbon nanotubes are at the center of the nanoelectronics research movement, with scientists making great progress toward getting nanotube-based electronic devices into the hands of ...
... as solvents, attached to metal surfaces as ultra-thin films.
"The molecular wires are actually polymer chains that have been grown from a metal surface at very high density," said Locklin, who has a ...
