Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Efficient and Robust: Why quantum transport can be close to optimal even in disordered molecular structures

09.08.2013
Geometric properties that enable waves to overlap and reinforce each other even in disordered molecular structures

A team led by the theoretical physicist Dr. Florian Mintert and the biophysicist Dr. Francesco Rao, junior fellows of the School of Soft Matter Research at the Freiburg Institute for Advanced Studies (FRIAS) of the University of Freiburg, is investigating the conditions and laws of quantum transport in a current study.

In light of an impending global energy crisis, the use of renewable energies like solar energy holds great promise for sustainable development. For millions of years, plants have used solar energy in the process of photosynthesis, converting lower-energy substances into high-energy substances with the help of light energy.

Quantum transport plays an important role in photosynthesis. It is based on a sensitive state that leads to constructive interference, causing waves to overlap and reinforce each other. Preconditions for this state are typically a well-controlled environment and very low temperatures. With the help of theoretical models and complex network analyses, the Freiburg scientists have now succeeded in identifying key geometric properties that enable constructive interference even in disordered media like molecular structures.

In particular, dividing the medium into active and inactive components makes the transport efficient as well as robust against thermal fluctuations, i.e., motion of the individual components. Combining these properties as a construction principle would allow scientists to produce molecular structures that achieve optimal efficiency even when control over the precise geometry is suboptimal.

The study is the result of an interdisciplinary project conducted by two junior research groups at FRIAS that merged knowledge of quantum systems and molecular processes with expertise in the analysis of complex networks. The study underlines the necessity of interdisciplinary cooperation for tackling and solving challenging scientific problems.

Original publication:
Stefano Mostarda, Federico Levi, Diego Prada-Gracia, Florian Mintert, Francesco Rao (2013). Structure–dynamics relationship in coherent transport through disordered systems. Nature Communications 4, doi:10.1038/ncomms3296.

Full text: www.nature.com/ncomms/2013/130807/ncomms3296/full/ncomms3296.html

Contact:
Dr. Florian Mintert / Dr. Francesco Rao
Phone: +49 (0)761/203-97443 / 97336
Fax: +49 (0)761/203-97451
E-Mail: florian.mintert@frias.uni-freiburg.de
francesco.rao@frias.uni-freiburg.de

Rudolf-Werner Dreier | University of Freiburg
Further information:
http://www.frias.uni-freiburg.de

Further reports about: Efficient FRIAS Robust molecular process molecular structure solar energy

More articles from Physics and Astronomy:

nachricht Tiny lasers from a gallery of whispers
20.09.2017 | American Institute of Physics

nachricht New quantum phenomena in graphene superlattices
19.09.2017 | Graphene Flagship

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

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

Im Focus: Tiny lasers from a gallery of whispers

New technique promises tunable laser devices

Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...

Im Focus: Ultrafast snapshots of relaxing electrons in solids

Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!

When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...

Im Focus: Quantum Sensors Decipher Magnetic Ordering in a New Semiconducting Material

For the first time, physicists have successfully imaged spiral magnetic ordering in a multiferroic material. These materials are considered highly promising candidates for future data storage media. The researchers were able to prove their findings using unique quantum sensors that were developed at Basel University and that can analyze electromagnetic fields on the nanometer scale. The results – obtained by scientists from the University of Basel’s Department of Physics, the Swiss Nanoscience Institute, the University of Montpellier and several laboratories from University Paris-Saclay – were recently published in the journal Nature.

Multiferroics are materials that simultaneously react to electric and magnetic fields. These two properties are rarely found together, and their combined...

Im Focus: Fast, convenient & standardized: New lab innovation for automated tissue engineering & drug

MBM ScienceBridge GmbH successfully negotiated a license agreement between University Medical Center Göttingen (UMG) and the biotech company Tissue Systems Holding GmbH about commercial use of a multi-well tissue plate for automated and reliable tissue engineering & drug testing.

MBM ScienceBridge GmbH successfully negotiated a license agreement between University Medical Center Göttingen (UMG) and the biotech company Tissue Systems...

Im Focus: Silencing bacteria

HZI researchers pave the way for new agents that render hospital pathogens mute

Pathogenic bacteria are becoming resistant to common antibiotics to an ever increasing degree. One of the most difficult germs is Pseudomonas aeruginosa, a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

“Lasers in Composites Symposium” in Aachen – from Science to Application

19.09.2017 | Event News

I-ESA 2018 – Call for Papers

12.09.2017 | Event News

EMBO at Basel Life, a new conference on current and emerging life science research

06.09.2017 | Event News

 
Latest News

Molecular Force Sensors

20.09.2017 | Life Sciences

Producing electricity during flight

20.09.2017 | Power and Electrical Engineering

Tiny lasers from a gallery of whispers

20.09.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>