Since the late 60's electronic devices have stored and transmitted information (bits) in two-dimensional circuits. Now, researchers at the University of Cambridge have been able to break this barrier by creating a nanoscale magnetic circuit capable of moving information along the three dimensions of space. This breakthrough could lead to an important increase in storage and processing capacities of electronic devices over those used today.
Is more always better? Researchers in Kyoto, Japan, sought to find out if that was the case for measuring magnetic field strengths. Their paper, appearing this week in AIP Advances, from AIP Publishing, examines whether a double H-coil method or a single H-coil method is a more accurate way to measure magnetic field strength.
In motors, generators and similar electric machines, the electrical current that powers them generates magnetic fields that magnetize some of the metallic components. Choosing the right magnetic material is crucial for designing efficient machines, so researchers analyzed the existing system for characterizing soft magnetic materials. To identify a better system, they looked at several factors that can affect the uncertainty inherent in the measurement of magnetic properties. Their results are in this week's AIP Advances.
Soft magnetic core engineering plays a key role in high-efficiency electric motors, but for higher-frequency applications, soft magnetic composites are also promising. Each stage of motor construction affects the material's microstructure, and understanding the details of the microstructure is paramount to reaching higher efficiency for electrical motors. In this week's AIP Advances, researchers created an advanced characterization method to closely examine microscale structural characteristics and changes during manufacturing processes using electron backscatter diffraction.
The US Department of Energy's Ames Laboratory has discovered and described the existence of a unique disordered electron spin state in a metal that may provide a unique pathway to finding and studying frustrated magnets. Their unique properties are of interest in the development of quantum computing and high-temperature superconductivity.
Physicists at Aalto University have made a breakthrough in revising methods largely discarded 15 years ago. They have discovered a microscopic mechanism that will allow gallium nitride semiconductors to be used in electronic devices that distribute large amounts of electric power.
Electrical physicists from Czech Technical University have provided additional evidence that new current sensors introduce errors when assessing current through iron conductors. The researchers show how a difference in a conductor's magnetic permeability, the degree of material's magnetization response in a magnetic field, affects the precision of new sensors. They also provide recommendations for improving sensor accuracy. The results are published this week in AIP Advances.
Metamaterials have amazing potential--think invisibility cloaks and perfect lenses--but they are more likely to be found in a Harry Potter novel than a lab. To help bring them closer to reality, Michigan Technological University's Elena Semouchkina has gone back to basics and demonstrated that the fundamental physics of metamaterials is more complex than scientists once thought.
Researchers at The Ohio State University Wexner Medical Center have shown -- for the first time -- that special bandages using weak electric fields to disrupt bacterial biofilm infection can prevent infections, combat antibiotic resistance and enable healing in infected burn wounds. The dressing becomes electrically active upon contact with bodily fluids.
Heat transport through pillared graphene could be made faster by manipulating the junctions between sheets of graphene and the nanotubes that connect them, according to Rice University researchers.