Archive for the ‘Materials Science’ Category
It has been successfully created a version of a semiconductor ultrapure enabling new states of matter that could have applications in quantum computing.
The material, gallium arsenide, is used to observe states in which electrons do not obey the laws of physics of individual particles, but instead are governed by their mutual interactions.
This progress, the work of the team of physicist Michael Manfra of Purdue University, provides new and illuminating data on some issues of physics.
The exotic states as described, in which electrons no longer behave as assumed by the standard model of solid state physics, are beyond the model, and constitute the boundary between what he understands and he does not understand the current science. These exotic states do not exist in most standard materials, but only under special conditions and ultrapure semiconductor crystals of gallium arsenide. Read the rest of this entry »
A revolutionary heat treatment that makes steel by 7 percent stronger than any steel known and takes less than 10 seconds to take place, is causing a sensation in the scientific community, and many practical applications being considered for this steel reinforced.
In fact, this steel has begun to be marketed under the trade name of Flash Bainite has proved to be stronger and more resistant than the more common titanium alloys used by the industry.
The technique for reinforcing steel, invented by entrepreneur Gary Cola, of Detroit, USA, is now being analyzed by him and a team of experts from Ohio State University, in order to obtain more detailed knowledge about the physics underlying the new treatment. Read the rest of this entry »
Plastic bushings are needed for all different types of engineering applications, especially high voltage equipment, for example, transformers and circuit breakers. This particular device is a hollow insulating liner that has a donut-like shape and is used to line an opening between two parts, preventing abrasion to any cable or wires that may be passing through the opening. Aside from plastic, bushings may also be made of metal. The type that is used by an engineer may depend on preference or the type of application for which the mechanism is needed.
The following are some of the more notable and impressive characteristics of plastic bearings:
- Outstanding resistance to wear
- Low coefficient of friction
- Capable of handling high loads
- High dimensional stability
- Exceptional resistance to chemicals
- Resistant to corrosion
- Low moisture absorption
- Etc.
It has been shown that the conductivity of graphene is significantly reduced when it is present more than one layer.
Graphene holds great promise for the development of devices and nano-sized equipment. It consists of a single layer of carbon atoms arranged in a hexagonal lattice, similar to that of a honeycomb.
There are high hopes in graphene as star material for the electronics industry. But their performance in real conditions prevailing in a chip has not been explored until now.
The conductivity of graphene is very good, in theory. But the electrons are not alone in the material. There impurities and, more importantly, there are vibrations from the atoms of the material. The electrons encounter these vibrations and interact with them, and that can affect the conductivity of the material. Read the rest of this entry »
Imagine you are driving a new car and in perfect condition, such as your own or borrow one, and you need to park in a parking lot. Maybe it will work, to visit a mall or attend a party at a sports stadium. The case is in a hurry and the situation is further complicated by the limited number of places available and the small concrete pillars, which make the operation of parking a challenge.
And just this happening in what is already thinking: Judge slightly wrong corner and hear the chirping of a scratch on the side of your car. The scratches of this kind tend to be mild but not cheap to repair.
Now, imagine that you can fix those ugly scratches quickly, easily and inexpensively or so also simple and cheap, can go through a car wash can detect these and other minor scratches and fix the car as they pass through. Not anymore, thanks to a new discovery. Read the rest of this entry »
A research team has designed the lighter carbon material in the world. Singular material could be used to detect pollutants and toxic substances, improve the techniques of robotic surgery and store energy more efficiently.
The new material belongs to the family of the lighter solids, also known by its technical name of aerogels or its common nickname ‘frozen smoke.’
The team Lei Zhai and Jianhua Zou, University of Central Florida, is responsible for developing this material, an aerogel-based carbon nanotube multi-wall. Read the rest of this entry »
Imagine a material that is stronger than steel but just as versatile as plastics, can take an almost unlimited range of shapes. Over many decades, scientists in the development of new materials have attempted to obtain an ideal substance in that it could be molded into complex shapes with the same ease and low cost plastic, but without sacrificing the strength and durability metal.
Now a team of researchers led by Jan Schroers, materials scientist at Yale University, has shown that some recently developed metallic glasses can be molded into complex shapes such as plastics, and without sacrificing the strength or durability of own metals. Read the rest of this entry »
Researchers are developing a solid composite material to help cool down to the small but powerful microelectronic components used in systems of high strategic value.
The material, consisting of silver and diamond, promises to have an exceptional degree of thermal conductivity in comparison with materials currently used for this application.
In initial testing, the team of engineer Jason Nadler of the Georgia Tech Research Institute (GTRI) has already observed clear improvements in efficiency, e.g. a reduction in the temperature from 285 to 181 °C (using a material with a 50 per cent of diamond). Read the rest of this entry »