Efficient conversion from magnetic storage to light is key
Inexpensive computers, cell phones and other systems that substitute flexible plastic for silicon chips may be one step closer to reality, thanks to research published on April 16 in the journal Nature Communications.
The paper describes a new proposal by University of Iowa researchers and their colleagues at New York University for overcoming a major obstacle to the development of such plastic devices—the large amount of energy required to read stored information.
Although it is relatively cheap and easy to encode information in light for fiber optic transmission, storing information is most efficiently done using magnetism, which ensures information will survive for years without any additional power.
“So a critical issue is how to convert information from one type to another,” says Michael Flatté, professor of physics and astronomy in the College of Liberal Arts and Sciences (CLAS) and director of the UI Optical Science and Technology Center.
“Although it does not cost a lot of energy to convert one to the other in ordinary, silicon-chip-based computers, the energy cost is very high for flexible, plastic computing devices that are hoped to be used for inexpensive “throwaway” information processors.
“Here we show an efficient means of converting information encoded in magnetic storage to light in a flexible plastic device,” says Flatté, who also serves as professor in the UI College of Engineering’s Department of Electrical and Computer Engineering.
What Flatté and his colleagues did was to successfully accomplish information transduction (or transfer and conversion) between a magnet and an organic light-emitting diode at room temperature and without electrical current flow between the magnet and the organic device.
“The magnetic fields from the magnetic storage device directly modify the light emission from the device. This could help solve problems of storage and communication for new types of inexpensive, low-power computers based on conducting plastics,” says professor Markus Wohlgenannt, also of the Department of Physics and Astronomy and the Optical Science and Technology Center.
Professor Andrew Kent of New York University notes that while these studies were conducted on relatively large devices, miniaturized devices would operate on the same principles and enable new types of high capacity storage technologies.
In addition to Flatté, Wohlgenannt and Kent, co-authors of the Nature Communications paper are Fujian Wang and Nicolas J. Harmon of the UI Department of Physics and Astronomy and Optical Science and Technology Center, and Ferran Macià of the NYU Department of Physics.
The complete title of the paper is “Organic Magnetoelectroluminescence for Room Temperature Transduction between Magnetic and Optical Information.”
The research was funded by the U.S. Army Research Office (ARO) Multidisciplinary University Research Initiative (MURI) grant #W911NF-08-1-0317 and F. Macià also by EC-MC grant IOF-253214.
Gary Galluzzo | Eurek Alert!
New technique controls autonomous vehicles on a dirt track
24.05.2016 | Georgia Institute of Technology
Engineers take first step toward flexible, wearable, tricorder-like device
24.05.2016 | University of California - San Diego
A biological and energy-efficient process, developed and patented by the University of Innsbruck, converts nitrogen compounds in wastewater treatment facilities into harmless atmospheric nitrogen gas. This innovative technology is now being refined and marketed jointly with the United States’ DC Water and Sewer Authority (DC Water). The largest DEMON®-system in a wastewater treatment plant is currently being built in Washington, DC.
The DEMON®-system was developed and patented by the University of Innsbruck 11 years ago. Today this successful technology has been implemented in about 70...
Permanent magnets are very important for technologies of the future like electromobility and renewable energy, and rare earth elements (REE) are necessary for their manufacture. The Fraunhofer Institute for Mechanics of Materials IWM in Freiburg, Germany, has now succeeded in identifying promising approaches and materials for new permanent magnets through use of an in-house simulation process based on high-throughput screening (HTS). The team was able to improve magnetic properties this way and at the same time replaced REE with elements that are less expensive and readily available. The results were published in the online technical journal “Scientific Reports”.
The starting point for IWM researchers Wolfgang Körner, Georg Krugel, and Christian Elsässer was a neodymium-iron-nitrogen compound based on a type of...
In the Beyond EUV project, the Fraunhofer Institutes for Laser Technology ILT in Aachen and for Applied Optics and Precision Engineering IOF in Jena are developing key technologies for the manufacture of a new generation of microchips using EUV radiation at a wavelength of 6.7 nm. The resulting structures are barely thicker than single atoms, and they make it possible to produce extremely integrated circuits for such items as wearables or mind-controlled prosthetic limbs.
In 1965 Gordon Moore formulated the law that came to be named after him, which states that the complexity of integrated circuits doubles every one to two...
Characterization of high-quality material reveals important details relevant to next generation nanoelectronic devices
Quantum mechanics is the field of physics governing the behavior of things on atomic scales, where things work very differently from our everyday world.
When current comes in discrete packages: Viennese scientists unravel the quantum properties of the carbon material graphene
In 2010 the Nobel Prize in physics was awarded for the discovery of the exceptional material graphene, which consists of a single layer of carbon atoms...
24.05.2016 | Event News
20.05.2016 | Event News
19.05.2016 | Event News
27.05.2016 | Awards Funding
27.05.2016 | Life Sciences
27.05.2016 | Life Sciences