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View cookies policy. Mechanics Of Solids Lewis acids are actually pretty stable dopants, and the team's findings apply fairly broadly, beyond simply the few OSCs and acids they tested. Most of the doping work on OSCs has used molecular dopants, which don't dissolve readily in many solvents. Understanding the mechanism at work should allow researchers to design even better dopants. Ultimately, the team hopes these insights will help push organic semiconductors toward broader commercial realization. This story is adapted from material from the University of California, Santa Barbara , with editorial changes made by Materials Today.
The views expressed in this article do not necessarily represent those of Elsevier.
Materials Science News - Elsevier
Link to original source. Inspired by octopuses, researchers have developed a structure that senses, computes and responds without any centralized processing — creating a device that is not quite a robot and not quite a computer, but has characteristics of both. The new technology holds promise for use in a variety of applications, from soft robotics to prosthetic devices.
This raises the possibility that the arms can 'make decisions' based on sensory input, without direct instruction from the brain. At the core of the soft tactile logic prototypes is a common structure: pigments that change color at different temperatures, mixed into a soft, stretchable silicone polymer. The resulting pigmented silicone contains channels that are filled with metal that is liquid at room temperature, effectively creating a squishy wire nervous system.
The higher temperature triggers a color change in the temperature-sensitive dyes.
In other words, the overall structure has a tunable means of sensing touch and strain. The researchers also developed soft tactile logic prototypes in which this same action — deforming the liquid metal by touch — redistributes electrical energy to other parts of the network.
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This can cause the material to change color, activate motors or turn on lights. Touching the silicone in one spot can create a different response than touching it in two spots; in this way, the system carries out simple logic functions in response to touch. Mimicking that paradigm, we've shown materials-based, distributed logic using entirely soft materials.
The researchers are currently exploring ways to make more complex soft circuits, inspired by the sophisticated sensors and actuators found in biological systems.
This story is adapted from material from North Carolina State University , with editorial changes made by Materials Today. Matthew Celina "Oxygen diffusion controlled degradation — what is needed and how does it help us with real performance issues? Rudolf Pfaendner "The salt in the soup: Additiviation of Recyclates" title to be confirmed. During the conference we will have an exhibition in the same premises. The exhibition spaces available will be sold first come first serve , when your offer fits to MoDeSt. Engineers at the Massachusetts Institute of Technology MIT have cooked up a material that is 10 times blacker than anything previously reported.
The material is made from vertically aligned carbon nanotubes CNTs — microscopic filaments of carbon, like a fuzzy forest of tiny trees — that the team grew on a surface of chlorine-etched aluminum foil.
This foil captures more than The effect is arresting: the gem, normally brilliantly faceted, appears as a flat, black void. Wardle says the CNT material, aside from making an artistic statement, may also be of practical use; for instance, in optical blinders that reduce unwanted glare to help space telescopes spot orbiting exoplanets. Someone will find a blacker material, and eventually we'll understand all the underlying mechanisms, and will be able to properly engineer the ultimate black. Wardle and Cui didn't intend to engineer an ultra-black material. Instead, they were experimenting with ways to grow carbon nanotubes on electrically conducting materials such as aluminum, in order to boost their electrical and thermal properties.
But in attempting to grow CNTs on aluminum, Cui ran up against a barrier, literally: an ever-present layer of oxide that coats aluminum when it is exposed to air. This oxide layer acts as an insulator, blocking, rather than conducting, electricity and heat.
As he cast about for ways to remove aluminum's oxide layer, Cui found a solution in salt, or sodium chloride. At the time, Wardle's group was using salt and other pantry products, such as baking soda and detergent, to grow carbon nanotubes. In their tests with salt, Cui noticed that chloride ions were eating away at aluminum's surface and dissolving its oxide layer. Now we're using this process to our advantage. Cui found that if he soaked aluminum foil in saltwater, he could remove the oxide layer.
He then transferred the foil to an oxygen-free environment to prevent re-oxidation, before placing the etched aluminum in an oven, where the group carried out techniques to grow carbon nanotubes via a process called chemical vapor deposition. They also saw that the combination of CNTs on aluminum significantly enhanced the material's thermal and electrical properties — a finding that they expected. What did surprise them, though, was the material's color. Wardle and Cui, who have applied for a patent on the technology, are making the new CNT process freely available to any artist to use for a non-commercial art project.
Cui measured the amount of light reflected by the material, not just from directly overhead, but also from every other possible angle. The results showed that the material absorbed greater than In essence, if the material contained bumps or ridges, or features of any kind, no matter what angle the material was viewed from, these features would be invisible, obscured in a void of black.
The researchers aren't entirely sure of the mechanism responsible for the material's opacity, but they suspect that it may have something to do with the combination of etched aluminum, which is somewhat blackened, with the carbon nanotubes. Scientists believe that forests of carbon nanotubes can trap and convert most incoming light to heat, reflecting very little of it back out as light, thereby giving CNTs a particularly black shade.
That needs further study," Wardle says. It also plans to expand its capacity at its site in Nanjing, China by a further 40, tons from , leading to a total of , metric tons of NPG capacity worldwide. NPG can be used in the production of polyester and alkyd resins for various coatings and plastics. Day one will include sessions covering design and methods, digital and additive manufacturing, as well as lightweight materials and how they play a role in the motorsport industry.http://summit.webcelebs.com/psychotherapy-of-schizophrenia-the-treatment-of-choice.php
Table of contents
Day two will include sessions covering automation, processes, and techniques, with a closing presentation from Motorsport Industry Association CEO Chris Aylett on what the future holds for the industry. Verder Scientific has agreed to acquire all shares of Chinese company EZ-mat and become its sole owner. This book, which covers infrared heating in industrial processes, has been updated to include new technical information, additional application examples, and new case studies involving process heating, such as curing metal finishes and protective coatings, fusing thermoset and thermoplastic powder coatings, forming molded plastics, and bonding adhesives and metals.
It also includes an improved section on controls and how they can be implemented using infrared process heaters. The handbook is now available in the IHEA website. This would involve being able to access material performance all along the value chain, from the manufacture of raw materials, the synthesis and compounding processes, to extrusion, injection or composite manufacturing, the organization said. J Appl Polym Sci Rahaman et al. Sasikumar, N. Manoj, T. These nano-sized carbon particles, impart additional properties like improved electrical conductivity, reduced friction, higher heat dissipation and improved hydrophobic nature, etc.
New methods for functionalization and dispersion are attempted to capitalize the full potential of these nanomaterials. The obstacles in K. Mukundan e-mail: mukundant npol.