Physics

Physics is the study of science that deals with matter, energy, motion, and force through time and space. 
Physics in nanotechnology embodies segments such as quantum computing, laser technology, photonics as some examples.

  • Carbon Nanotubes Turn Electrical Current into Light-emitting Quasi-particles

    Artistic rendering of a light-emitting transistor with carbon nanotubes between two mirrors for electrical generation of polaritons. Image credit: Dr Yuriy Zakharko, co-author

    Light-matter quasi-particles can be generated electrically in semiconducting carbon nanotubes. Material scientists and physicists from Heidelberg University (Germany) and the University of St Andrews (Scotland) used light-emitting and extremely stable transistors to reach strong light-matter coupling and create exciton-polaritons. These particles may pave the way for new light sources, so-called electrically pumped polariton lasers, that could be manufactured with carbon nanotubes.

  • Carinthia continues to expand Villach as a microelectronics research cluster

    CTR research cleanroom media conference from left: Werner Scherf (CTR), Gaby Schaunig (Deputy Governor of Carinthia), Simon Grasser (CTR)  CTR/Helge Bauer

    Carinthian Tech Research (CTR) invests €4.5 Mio in research cleanroom for microsensors and systems integration. Carinthian government supports investment in high-tech facilities at the Villach site.

    CTR Carinthian Tech Research is on of Austria’s largest application-oriented research centres in the area of smart sensors and systems integration. In close cooperation with industry, over 70 researchers work on developing the tiniest microsensors and power electronics as well as their assembly and packaging. An important new addition to the R&D facilities at the Villach site is the recently built research cleanroom, which is now available for microchip research and systems integration.

  • Center for plasma medicine opened in Korea

    Opening ceremony of the APMC in Korea, with Prof. Chun, Director of the Kwangwoon University of Seoul, Prof. Choi, Director of the PBRC Seoul and Prof. Weltmann, Director of the INP Greifswald  INP

    With a ceremonial opening in presence of the German ambassador in Korea on February 6th, 2017 the cross-national „Applied Plasma Medicine Center“ (APMC) of the Leibniz-Institute for Plasma Science and Technology e.V. (INP Greifswald) and the Plasma Bioscience Research Center (PBRC) in Seoul, Korea was founded.

  • Cfaed Researchers of TU Dresden Uncover Doping in Organic Semiconductors

    Geometry of a molecular cluster of dopant and host molecules with benzimidazoline dopant and a C60 molecule. S. Schellhammer/ F. Ortmann

    A group of physicists from the cfaed at TU Dresden, together with researchers from Japan, were able to demonstrate in a study how the doping of organic semiconductors can be simulated and experimentally verified. The study has now been published in “Nature Materials”. In semiconductor technology, doping refers to the intentional introduction of impurities (also known as dopants) into a layer or into the intrinsic semiconductor of an integrated circuit.

  • Chemical Reactions in the Light of Ultrashort X-ray Pulses from Free-electron Lasers

    Ultrashort X-ray pulses (pink) ionize neon gas in the center of the ring. An infrared laser (orange) deflects the electrons (blue) on their way to the detectors. Image: Terry Anderson / SLAC National Accelerator Laboratory

    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.

  • Chemists of TU Dresden Develop Highly Porous Material, More Precious than Diamonds

    The framework of DUT-60 holds a pore volume of 5.02 cm3g-1 – the highest specific pore volume one has ever measured among all crystalline framework materials so far. Dr. I. Senkovska, TU Dresden

    World Record of Cavities. Porosity is the key to high-performance materials for energy storage systems, environmental technologies or catalysts: The more porous a solid state material is, the more liquids and gases it is able to store. However, a multitude of pores destabilizes the material. In search of the stability limits of such frameworks, researchers of the TU Dresden’s Faculty of Chemistry broke a world record: DUT-60 is a new crystalline framework with the world’s highest specific surface and the highest specific pore volume (5.02 cm3g-1) measured so far among all known crystalline framework materials.

  • Coating Free-form Surfaces on Large Optical Components

    1-dimensional graded, nearly sinusoidal layer thickness curve on glass substrate (450x450 mm). © Fraunfofer FEP

    The business unit Precision Coatings at Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP has special expertise in developing deposition processes for high-precision coating systems on optical components. Now, a coating technology for Deposition of laterally graded optical layers on 2D and in the future also on 3D substrates has been developed. The results will be presented at the 2nd OptecNet Annual Conference in Berlin, June 20-21, 2018.

  • Cold Molecules on Collision Course

    Schematic view of the experimental setup of the “cryofuge”. Graphic: MPQ, Quantum Dynamics Division

    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 the same time. Scientists around Dr. Martin Zeppenfeld from the Quantum Dynamics Division of Prof. Gerhard Rempe at the Max Planck Institute of Quantum Optics in Garching have now taken an important step in this direction by developing a new cooling method: the so-called “cryofuge” combines cryogenic buffer-gas cooling with a special kind of centrifuge in which rotating electric fields decelerate the precooled molecules down to velocities of less than 20 metres per second.

  • Color Effects from Transparent 3D-printed Nanostructures

    Light hits the 3D-printed nanostructures from below. After it is transmitted through, the viewer sees only green light—the remaining colors are redirected. Thomas Auzinger

    Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and certain color effects are impossible to achieve. The natural world, however, also exhibits structural coloration, where the microstructure of an object causes various colors to appear. Peacock feathers, for instance, are pigmented brown, but—because of long hollows within the feathers—reflect the gorgeous, iridescent blues and greens we see and admire.

  • Combining the Benefits of 3D Printing and Casting

    In additive freeform molding, the shell of a part is constructed using FDM printing. A dosing unit in the printer then fills this with a two-component mixture. Fraunhofer IPA/Rainer Bez

     

    Researchers at Fraunhofer IPA have developed a new process that combines 3D printing and casting. In additive freeform casting (AFFC), first a shell of the part is manufactured using FLM printing, then this shell is filled with a two-component resin. This saves time, increases stability of the part and allows new materials to be printed.

  • Complex Tessellations, Extraordinary Materials

    So-called Archimedean tessellations are often associated with very special properties, for example unusual electrical conductivity, special light reflectivity or extreme mechanical strength. Klappenberger and Zhang / TUM

    An international team of researchers lead by the Technical University of Munich (TUM) has discovered a reaction path that produces exotic layers with semiregular structures. These kinds of materials are interesting because they frequently possess extraordinary properties. In the process, simple organic molecules are converted to larger units which form the complex, semiregular patterns.

  • Computersimulation enthüllt neue Seite der Kavitation

    Eine bisher unbekannte Entstehungsweise von Kavitationsblasen haben Forscher mit Hilfe einer Modellrechnung entdeckt. In der Fachzeitschrift Science Advances beschreiben sie, wie Öl-abstoßende und Öl-anziehende Oberflächen auf einen vorbeiströmenden Ölfilm wirken. Je nach Viskosität des Öls bildet sich am Übergang eine Dampfblase. Diese sogenannte Kavitation kann Material schädigen etwa bei Schiffsschrauben oder Pumpen. Sie kann aber auch einen positiven Effekt haben, in dem sie für Abstand zwischen Bauteilen sorgt und damit Schädigung vermeidet. DOI: 10.1126/sciadv.1501585

  • Concepts for new Switchable Plasmonic Nanodivices

    Configuration of a switchable plasmonic router consisting of a T-shaped metallic waveguide surrounded by a ferromagnetic dielectric material and under the action of an external magnetic field. Fig. MBI

     

    Plasmonic waveguides open the possibility to develop dramatically miniaturized optical devices and provide a promising route towards the next-generation of integrated nanophotonic circuits for information processing, optical computing and others. Key elements of nanophotonic circuits are switchable plasmonic routers and plasmonic modulators.

  • Construction Set of Magnon Logic Extended: Magnon Spin Currents Controlled Via Spin Valve Structure

    Depending on the magnetic configuration of the spin valve, the electrical signal is transmitted (bottom) or suppressed (top). ill./©: Joel Cramer

    Magnon spintronics employs magnons instead of electrical charges for information processing. In the emerging field of magnon spintronics, researchers investigate the possibility to transport and process information by means of so-called magnon spin currents. In contrast to electrical currents, on which todays information technology is based, magnon spin currents do not conduct electrical charges but magnetic momenta.

  • Controlled Coupling of Light and Matter

    Artistic representation of a plasmonic nano-resonator realized by a narrow slit in a gold layer. Upon approaching the quantum dot (red) to the slit opening the coupling strength increases. Image: Heiko Groß

    Publishing in a journal like Science Advances usually heralds a particularly exciting innovation. Now, physicists from the Julius-Maximilians-Universität Würzburg (JMU) in Germany and Imperial College London in the UK are reporting controlled coupling of light and matter at room temperature. This achievement is particularly significant as it builds the foundations for a realization of practical photonic quantum technologies.

  • Controlling Quantum States Atom by Atom

    Controlling Quantum States Atom by Atom | Using the tip of a scanning tunnel microscope, a single xenon atom (yellow) is being moved from a quantum box (blue), thus specifically altering its electronic quantum state. (Image: University of Basel, Department of Physics)

    An international consortium led by researchers at the University of Basel has developed a method to precisely alter the quantum mechanical states of electrons within an array of quantum boxes. The method can be used to investigate the interactions between various types of atoms and electrons, which is essential for future quantum technologies, as the group reports in the journal Small.

  • Controlling Thermal and Particle Currents by Quantum Observation

    Artistic illustration of the role of a quantum observer in a nanodevice. © K. Aranburu

    Researchers from the Theory Department of the MPSD have realized the control of thermal and electrical currents in nanoscale devices by means of quantum local observations. Measurement plays a fundamental role in quantum mechanics. At the same time, it also constitutes one of the main problems regarding the interpretation of this whole field. The best-known illustration of the principles of superposition and entanglement is Schrödinger’s cat. Not being visible from the outside, the cat resides in a coherent superposition of two states: it is alive and dead at the same time.

  • Converts One-third of the Sunlight into Electricity: 33.3 % Silicon-based Multi-junction Solar Cell

    Silicon-based multi-junction solar cell consisting of III-V semiconductors and silicon. The record cell converts 33.3. percent of the incident sunlight into electricity. © Fraunhofer ISE/Photo: Dirk Mahler

    Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with the company EV Group (EVG) have developed a new silicon-based multi-junction solar cell, which can convert exactly one-third of the incident sunlight into useful electricity. This newest result is now published in the renowned scientific magazine Nature Energy.

  • Conveyor Technology: Moving Large Quantities of Small Goods Using Muscles Made of Silicone Polymer

    Prof. Stefan Seelecke (l.) and Steffen Hau will be exhibiting a model of their vibrating conveyor system at Hannover Messe. Credit: Oliver Dietze

    Using artificial-muscle actuators, Stefan Seelecke and his team of engineers at Saarland University have developed a new self-optimizing conveyor technology that adapts itself to the size, weight and desired speed of the materials being conveyed. The technology makes use of silicone polymer-based artificial muscles to transport dry bulk materials of all kinds, from foodstuffs to small metal components. By exploiting the properties of electromechanically active polymers, the Saarbrücken research team has built an actuator that they install at intervals below the conveyor belt.

  • Copper Compound as Promising Quantum Computing Unit

    Jena doctoral student Benjamin Kintzel looks at a laboratory vessel containing crystals of a novel molecule that may possibly be used in a quantum computer. Photo: Jan-Peter Kasper/FSU

     

    Quantum computers could vastly increase the capabilities of IT systems, bringing major changes worldwide. However, there is still a long way to go before such a device can actually be constructed, because it has not yet been possible to transfer existing molecular concepts into technologies in a practical way. This has not kept researchers around the world away from developing and optimising new ideas for individual components. Chemists at Friedrich Schiller University in Jena (Germany) have now synthesised a molecule that can perform the function of a computing unit in a quantum computer. They report on their work in the current issue of the research journal ‘Chemical Communications’.