The emerging field of molecular electronics -- using nanoscale molecules as key components in computers and other electronic devices -- is in excellent health and has a bright future, conclude UCLA, Caltech and University of California, Santa Barbara, chemists who assess the field in the Dec. 17 issue of the journal Science. "Molecular electronics is in its infancy, and its adolescence and adulthood will be very exciting as we push toward the promise of molecular electronics: smaller, more versatile and more efficient," said Amar Flood, a UCLA researcher in Fraser Stoddarts supramolecular chemistry group, and lead author of the Science paper. "The combination of active molecules with electronic circuitry is opening up exciting new areas of science," Flood said. "It is too early to predict precisely what will come from this marriage, but we expect that the unique properties of molecules, including sight, taste and smell, may be put to very good effect by marrying them with silicon."
The first applications are likely to involve hybrid devices that combine molecular electronics with existing technologies, such as silicon, said Stoddart, director of the California NanoSystems Institute (CNSI), who holds UCLAs Fred Kavli Chair in NanoSystems Sciences. Molecular electronic components are already working, say Stoddart, Flood and co?authors James R. Heath, who is Elizabeth W. Gilloon Professor of Chemistry at Caltech and a member of CNSIs scientific board; and David Steuerman, a CNSI postdoctoral fellow in physics at University of California, Santa Barbara. For example, logic gates, memory circuits, rectifiers, sensors and many other fundamental components have been demonstrated to work. Progress toward incorporating molecules as the active components in electronic circuitry has advanced rapidly over the past five years. Heath describes the progress as "real and rapid."
"We have published 64-bit random access memory circuits using bistable rotaxane molecules as the memory elements, and we are in the process of fabricating a 16-kilobit memory circuit at a density of devices that far exceeds current technology," Heath said. "On a Moores Law graph, our memory circuit is at a density of Intel-like circuits that will be manufactured decades from now." "Dreams I was having less than a decade ago are becoming a reality in our labs," said Stoddart, whose areas of expertise include nanoelectronics, mechanically interlocked molecules, molecular machines, molecular nanotechnology, molecular self-assembly processes and molecular recognition, among many other fields of chemistry. "Although many classes of molecules can be used for molecular electronics, only a small percentage of these have been assessed so far," Flood said.
Stuart Wolpert | EurekAlert!
Waste from paper and pulp industry supplies raw material for development of new redox flow batteries
12.10.2017 | Johannes Gutenberg-Universität Mainz
Low-cost battery from waste graphite
11.10.2017 | Empa - Eidgenössische Materialprüfungs- und Forschungsanstalt
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
20.10.2017 | Information Technology
20.10.2017 | Materials Sciences
20.10.2017 | Interdisciplinary Research