Reader heads of compact discs and computer hard discs or position and magnetic field sensors are some of the applications of magneto-resistant materials, which are normally obtained by costly methods. Precisely in order to solve this problem, university teacher María Luisa Fernández-Gubieda Ruiz, of the University of the Basque Country, is carrying out research into developing a simpler and more effective method for the preparation of these materials, based on their undergoing thermal treatment. The lecturer explained the new method at a seminar recently given at the Department of Physics at the Public University of Navarre.
Fernández-Gubieda explained that magneto-resistance is the change in resistance manifested by certain materials when subjected to a magnetic field. These changes, she added, can be of great importance and in some systems can reach a variation of up to 40 or 50 per cent.
Garazi Andonegi | Basque research
Necessity is the mother of invention: Fraunhofer WKI tests utilization of low-value hardwood for wood fiberboard
13.11.2019 | Fraunhofer-Institut für Holzforschung - Wilhelm-Klauditz-Institut (WKI)
New Pitt research finds carbon nanotubes show a love/hate relationship with water
13.11.2019 | University of Pittsburgh
Carbon nanotubes (CNTs) are valuable for a wide variety of applications. Made of graphene sheets rolled into tubes 10,000 times smaller than a human hair, CNTs have an exceptional strength-to-mass ratio and excellent thermal and electrical properties. These features make them ideal for a range of applications, including supercapacitors, interconnects, adhesives, particle trapping and structural color.
New research reveals even more potential for CNTs: as a coating, they can both repel and hold water in place, a useful property for applications like printing,...
If you've ever tried to put several really strong, small cube magnets right next to each other on a magnetic board, you'll know that you just can't do it. What happens is that the magnets always arrange themselves in a column sticking out vertically from the magnetic board. Moreover, it's almost impossible to join several rows of these magnets together to form a flat surface. That's because magnets are dipolar. Equal poles repel each other, with the north pole of one magnet always attaching itself to the south pole of another and vice versa. This explains why they form a column with all the magnets aligned the same way.
Now, scientists at ETH Zurich have managed to create magnetic building blocks in the shape of cubes that - for the first time ever - can be joined together to...
Quantum-based communication and computation technologies promise unprecedented applications, such as unconditionally secure communications, ultra-precise...
In two experiments performed at the free-electron laser FLASH in Hamburg a cooperation led by physicists from the Heidelberg Max Planck Institute for Nuclear physics (MPIK) demonstrated strongly-driven nonlinear interaction of ultrashort extreme-ultraviolet (XUV) laser pulses with atoms and ions. The powerful excitation of an electron pair in helium was found to compete with the ultrafast decay, which temporarily may even lead to population inversion. Resonant transitions in doubly charged neon ions were shifted in energy, and observed by XUV-XUV pump-probe transient absorption spectroscopy.
An international team led by physicists from the MPIK reports on new results for efficient two-electron excitations in helium driven by strong and ultrashort...
An international research group has observed new quantum properties on an artificial giant atom and has now published its results in the high-ranking journal Nature Physics. The quantum system under investigation apparently has a memory - a new finding that could be used to build a quantum computer.
The research group, consisting of German, Swedish and Indian scientists, has investigated an artificial quantum system and found new properties.
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13.11.2019 | Life Sciences
13.11.2019 | Machine Engineering
13.11.2019 | Life Sciences