Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Nanoengineered Materials Workshop to Meet Sept. 16-18

16.09.2010
Two groups of scientists who rarely get together will jointly consider the technological future of nanoscale materials in a workshop that will meet at the University of Chicago’s Kersten Physics Teaching Center from Sept. 16-18.

The Electronic Transport in Nanoengineered Materials workshop is sponsored by UChicago’s Materials Research Science and Engineering Center. Among the approximately 70 participants will be physical chemists, who make new materials and study their properties, and theoretical physicists who specialize in the study of solid matter.

“You don’t find this kind of assembly of high-powered, solid-state theorists and high-powered chemists together in the same room,” said Philippe Guyot-Sionnest, a Professor in Chemistry and Physics at UChicago.

Materials development over the last few years motivated Guyot-Sionnest and Dmitri Talapin, Assistant Professor in Physics, to organize the workshop, along with their UChicago colleagues Henrich Jaeger, the William J. Friedman and Alicia Townsend Professor in Physics, and Ilya Gruzberg, Assistant Professor in Chemistry.

“The theoretical background existed for about half a century,” Talapin said. “During the past five years or so, maybe 10 years at most, people learned how to make really amazing materials that theoreticians could not even dream about 20 years ago.”

Conventional methods for building smaller electronic components have involved working from the top down: chiseling ever-finer structures out of a larger piece of material. The workshop participants, by contrast, are focused on working from the bottom up: building larger structures from smaller building blocks.

Workshop participants will grapple with two challenges: is it now possible to synthesize three-dimensional materials at the nanoscale of atoms and molecules? And further, can the components of these objects communicate with each other via magnetic, thermal or electric signals?

Much of the workshop will highlight the technological potential of quantum dots, which are also called semiconductor nanocrystals. Quantum dots emit light in a rainbow of colors and have previously been used in lasers, biological studies and other applications.

Speakers focusing on quantum dots will include Moungi Bawendi, PhD’88, and Vladimir Bulovic, both of the Massachusetts Institute of Technology. Bawendi invented a method for making quantum dots that scientists have adopted the world over. He collaborates with Bulovic, who founded a start-up company, QD Vision of Watertown, Mass., to harness the capabilities of quantum dots for flat-panel displays and other products.

“He wants to make flat-panel displays that compete with the organic, light-emitting diode displays you see now starting to emerge from Samsung and other electronic companies,” Guyot-Sionnest said.

Structural disorder in nanocrystals

The structural disorder common to nanocrystals presents a hurdle for device makers, according to Guyot-Sionnest. “The question is, how do you get charge to flow smoothly through such an array of boulders,” he said.

Transporting electrons through quantum dots was not possible as recently as eight years ago. “It just then started to become conceivable that you could get electron flow, and there’s been constant progress,” Guyot-Sionnest said.

Also speaking at the workshop will be the University of Minnesota’s Boris Shklovskii, who helped pioneer the theory of electron transport through disordered materials in the 1970s.

“A peculiar thing about this field is that the theoretical framework used to describe this transport is really sophisticated,” Talapin said. Developing this framework led to the 1977 Nobel Prize in Physics for Sir Neville Mott and to the 1986 Landau Prize of the Soviet Academy of Sciences for Shklovskii.

The conference will close on Saturday afternoon with a session on superconductivity, the transmission of electric current without any loss of flow. Superconductivity can now be achieved only at freezing temperatures.

Superconductivity at higher, more practical temperatures has been touted for potential applications ranging from superfast computers to levitating trains. It remains unknown if nanoengineering can lead to a better superconductor, said Guyot-Sionnest, “but it is conceivable that controlling the nanoscale can positively affect the parameters controlling the critical temperature.”

Steve Koppes | Newswise Science News
Further information:
http://www.uchicago.edu

Further reports about: CHEMISTRY Nanoengineered Nobel Prize flat-panel displays quantum dot

More articles from Seminars Workshops:

nachricht International Workshop Sees Central Role for Solar in Transforming the World Energy Economy
28.05.2018 | Fraunhofer-Institut für Solare Energiesysteme ISE

nachricht Climate Fluctuations & Non-equilibrium Statistical Mechanics: An Interdisciplinary Dialog
29.06.2017 | Max-Planck-Institut für Physik komplexer Systeme

All articles from Seminars Workshops >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

Im Focus: Chemical reactions in the light of ultrashort X-ray pulses from free-electron lasers

Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.

Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

Microscopic trampoline may help create networks of quantum computers

17.07.2018 | Information Technology

In borophene, boundaries are no barrier

17.07.2018 | Materials Sciences

The role of Sodium for the Enhancement of Solar Cells

17.07.2018 | Power and Electrical Engineering

VideoLinks
Science & Research
Overview of more VideoLinks >>>