Andrew G. Mark will be awarded this year’s Günter Petzow Prize from the Max Planck Institute for Intelligent Systems. He will be honoured for his significant contribution to the development of a new nanofabrication technique for manufacturing, precisely and efficiently, hybrid multifunctional nanostructures with diverse 3D shapes.
Up to now, it was very difficult to fabricate structures with sizes less than 100 nanometres that did not have symmetrical shapes. With this new process, three-dimensional nanostructures can be custom fabricated from various materials by vapour deposition. This has allowed researchers to produce hybrid nanoscopic structures that can be composed of materials with very diverse physical properties – metals, semiconductors, magnetic materials, and insulators.
The general technique is based on vapour deposition in high vacuum coupled with complex substrate manipulation during growth. However, unlike conventional vapour deposition schemes, this one exploits local shadowing of adjacent structures, with the shadow angles controlled by complex substrate manipulation to guide the shape of discrete structures. This technique has been used in the past to produce structured films in the micron size regime.
However, it had not been applied to the growth of colloidal nanostructures from metals because surface diffusion and stochastic nucleation limit the uniformity and fidelity of the possible structures. Andrew made significant contributions to the development of the instrumentation and techniques that allow the process to be applied to the fabrication of truly nanoscale structures, in technologically important materials, and in large quantities.
As an example of the possible applications, the researchers have produced helices of gold that function as absorbing nanoantennas for light. The colour of light that the antennas absorb can be controlled by their size and material composition.
And the asymmetrical shape of the particles can be controlled to tune their interaction with light of different polarizations. Other applications that are being pursued with the new fabrication method include shaped nanomagnets, thin films for the interaction with spin-polarized electrons, and chemical nanomotors.
Andrew G. Mark studied physics at the Queen’s University in Canada where he finished his Ph.D. thesis in 2009. After 3 years as postdoctoral fellow with Prof. Rasmita Raval at the University of Liverpool, he joined 2012 the Research Group “Micro, Nano, and Molecular Systems“ at Max Planck Institute for Intelligent Systems in Stuttgart, headed by Professor Peer Fischer.
Since 2006, the Stuttgart location of the Max Planck Institute for Intelligent Systems annually awards the Günter Petzow Prize to a young scientist from the institute for outstanding research in the field of material sciences. The prize is sponsored by the Robert Bosch GmbH and is presented every year at the Günter Petzow colloquium, the institute’s scientific colloquium. Professor Günter Petzow headed the Max Planck Institute for Metals Research (the predecessor of the Max Planck Institute for Intelligent Systems) as director between 1973 and 1994.
The Günter Petzow Colloquium and the award ceremony will take place on Friday, July 24th. It will start off with coffee at 12.30 pm. The public talks, which will mostly be held in German, commence at 1 pm. More information can be found on the Institute’s homepage under www.is.mpg.de/en_gpk2015 .
Annette Stumpf | Max-Planck-Institut für Intelligente Systeme
The quest for the oldest ice on Earth
14.11.2016 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
Empa Innovation Award for new flame retardant
09.11.2016 | Empa - Eidgenössische Materialprüfungs- und Forschungsanstalt
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
02.12.2016 | Medical Engineering
02.12.2016 | Agricultural and Forestry Science
02.12.2016 | Physics and Astronomy