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!
Improved stability of plastic light-emitting diodes
19.04.2018 | Max-Planck-Institut für Polymerforschung
Intelligent components for the power grid of the future
18.04.2018 | Christian-Albrechts-Universität zu Kiel
Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...
Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...
Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.
Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...
In the fight against cancer, scientists are developing new drugs to hit tumor cells at so far unused weak points. Such a “sore spot” is the protein complex...
In an article that appears in the journal “Review of Modern Physics”, researchers at the Laboratory for Attosecond Physics (LAP) assess the current state of the field of ultrafast physics and consider its implications for future technologies.
Physicists can now control light in both time and space with hitherto unimagined precision. This is particularly true for the ability to generate ultrashort...
13.04.2018 | Event News
12.04.2018 | Event News
09.04.2018 | Event News
19.04.2018 | Materials Sciences
19.04.2018 | Physics and Astronomy
19.04.2018 | Physics and Astronomy