As a result, it is necessary to collect only a single type of plastic to ensure the desired material properties.
Traditionally, he says, surgeons have chosen stents based on their material properties--how springy they are and how easy they are to get into clogged arteries.
And while the company says it is able to be drilled, tapped or screwed, its material properties are unknown compared to traditional materials like real wood or steel.
Scientists have been trying to find ways to control material properties for a long time, says Paul Lagace, an aeronautical and astronautical engineer at the Massachusetts Institute of Technology.
Wald thinks the same will be true for drug-coated stents: Sales may be determined as much by the material properties of the stent as by the restinosis rates, which, Wald says, are similar among competitors.
He studies the material properties of tissue and organs from animals and cadavers to assign shape, size, density, mass and ten or more coefficients that describe how each cube of virtual flesh will deform when confronted with a given force from a given direction.
Because smart skins are grown by depositing layer upon layer, the base coating can be used as a foundation for adding other ingredients to tailor the material's properties for specific purposes.
There are certain scenarios, says Dr Lagace, where you might want to use a material because of its surface properties, but you might not want that property all the way through the material.
Electronic and optical applications are restricted by the properties of the material used, but there should be jobs to do in micromechanics.
More than a public-relations spin, these physical properties ensure the material's future.
When the transistor switches, the change in voltage alters the electronic properties of the material and determines whether or not electrons can flow through it.
We also spotted this ingenious wood speaker system that amplifies music using the properties of the material it's made of and needs no electricity at all.
These discoveries have given birth to a field of endeavour that is known as spintronics, because the magnetic properties of a material depend on a quantum-mechanical property of electrons called spin.
Nanosys, Inc. is an advanced material architect, harnessing the fundamental properties of inorganic materials into process ready systems that can integrate into existing manufacturing to produce vastly superior products in lighting, electronic displays, solar power and energy storage.
Unfortunately, these chains come in several varieties, and making useful materials from them requires that the amount of each variety in the mixture be controlled, as the properties of the resulting material depend on the proportions of its components.
And in the chamber, the respiration and the metabolic properties of the surface sand material were measured and we added nutrients and measured the gases that were produced.
Some 3D systems allow the properties and internal structure of the material being printed to be varied.
But scientists say rhino horns are made from the same material as fingernails and have no proven medicinal properties.
Since the robocasting machine allows the researchers to manipulate several inks at once, they are able to make new kinds of composite materials this way interlacing the filigrees, and even leaving holes in the material if that helps to arrive at the desired properties.
ECONOMIST: A new way to build complicated materials, micron by micron
And if silver is turned into very small particles, it has antimicrobial properties that are not present in the bulk material.
Such precise control over the material's structure makes possible materials with useful but unusual properties.
应用推荐