Motion Pictures from Living Cells: Research Team from Jena and Bielefeld Improves Superresolution Microscopy
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- Geschrieben von Leibniz-Institut für Photonische Technologien e. V.
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In order to observe cells at work, researchers have to bypass a physical law. One of the fastest techniques to overcome the resolution limit of classical light microscopy is high-resolution structured illumination microscopy. It makes visible details that are about a hundred nanometres in size. However, translating the data back into images has taken a long time so far. A research team from the University of Bielefeld, the Leibniz Institute of Photonic Technology and the Friedrich Schiller University in Jena has now developed a technique to observe processes in the cell. The results were published in "Nature Communications" on September 20, 2019.
Highly Sensitive Sensors to Measure the Heart and Brain Activity
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- Geschrieben von Christian-Albrechts-Universität zu Kiel
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Electrical signals measurements such as the ECG (electrocardiogram) can show how the human brain or heart works. Next to electrical signals magnetic signals also reveal something about the activity of these organs. They could be measured with little effort and without skin contact. But the especially weak signals require highly sensitive sensors. Scientists from the Collaboraive research Center 1261 "Magnetoelectric Sensors" at Kiel University have now developed a new concept for cantilever sensors, with the future aim of measuring these low frequencies of heart and brain activity. The extremely small, energy-efficient sensors are particularly well-suited for medical applications or mobile microelectronics. This is made possible by the use of electrets. Such material is permanently electrically charged, and is also used in microphones for hearing aids or mobile phones. The research team presented its sensor concept in a special edition of the renowned journal Nano Energy.
How to Construct a Protein Factory
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- Geschrieben von Universität Bern
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The complexity of molecular structures in the cell is amazing. Having achieved great success in elucidating these structures in recent years, biologists are now taking on the next challenge: to find out more about how they are constructed. A joint research project between two groups from the University of Bern and ETH Zurich now provides insight into a very unusual construction process in the unicellular parasite Trypanosoma brucei.
Heat Shields for Economical Aircrafts
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- Geschrieben von Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS
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Environmentally friendly: IWS Dresden ceramic coatings can reduce engine exhaust gases
To make aircrafts more economical, environmentally friendly and robust, Fraunhofer engineers from Dresden have developed a new ceramic heat shield technology. In this process, a powder of yttrium-stabilized zirconium oxide (YSZ) is added to water to form a suspension. Quickly and cost-effectively this liquid powder mixture can be sprayed onto turbine blades or other aircraft parts. Such and similar thermal barrier coatings (TBCs) facilitate aircraft engines, which consume less fuel and do not contaminate the atmosphere as much.
Turbine from the 3D Printer
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- Geschrieben von Fraunhofer-Gesellschaft
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Together with the H+E-Produktentwicklung GmbH in Moritzburg, Saxony, the Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM in Dresden has developed a true-to-scale gas turbine that impressively demonstrates the current potentials and limitations of powder bed-based additive technologies. The technology demonstrator "Siemens SGT6-8000 H", a scaled model of a gas turbine for power generation on a scale of 1:25, was completely manufactured with additive processes except for the shaft.
Modular OLED Light Strips
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- Geschrieben von Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP
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At the International Symposium on Automotive Lighting 2019 (ISAL) in Darmstadt from September 23 to 25, 2019, the Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, a provider of research and development services in the field of organic electronics, will present OLED light strips of any length with additional functionalities for the first time at booth no. 37.
The Working of a Molecular String Phone
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- Geschrieben von Max-Planck-Institut für Struktur und Dynamik der Materie
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Researchers from the Department of Atomically Resolved Dynamics of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg, the University of Potsdam (both in Germany) and the University of Toronto (Canada) have pieced together a detailed time-lapse movie revealing all the major steps during the catalytic cycle of an enzyme. Surprisingly, the communication between the protein units is accomplished via a water-network akin to a string telephone. This communication is aligned with a ‘breathing’ motion, that is the expansion and contraction of the protein.
Innovative Method Provides Unique Insights into the Structure of Cells and Tissues
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- Geschrieben von Westfälische Wilhelms-Universität Münster
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Scientists at Münster University investigate cells using dual-beam laser mass spectrometry:Cells are the basic building blocks of life. The chemical composition of cells can be determined by mass spectrometry. Scientists at the University of Münster present a method which has improved the spatial resolution of “MALDI” mass spectrometry by around one-thousandth of a millimetre. The results have been published in "Nature Methods".
Porous Silicon Layers for More Efficient Lithium-Ion Batteries
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- Geschrieben von Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP
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Within the scope of the project PoSiBat (funding reference 100275833), Fraunhofer FEP scientists were able to develop a non-toxic and efficient manufacturing process for porous silicon layers. The results of the recently completed project will be presented at the Thin Film Technology for Energy Systems workshop at V 2019 and at the Fraunhofer FEP booth No. 22 (October 8 –10, 2019, in Dresden, Germany). Lithium-ion batteries are well established due to their good properties. They have a higher energy density than other batteries. Therefore, they are used in cameras, watches, mobile devices and especially for electric vehicles. However, from a technical point of view they still offer a high potential for improving and optimizing of battery cells.
Silicon as a Semiconductor: Silicon Carbide Would Be Much More Efficient
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- Geschrieben von Universität Basel
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In power electronics, semiconductors are based on the element silicon – but the energy efficiency of silicon carbide would be much higher. Physicists of the University of Basel, the Paul Scherrer Institute and ABB explain what exactly is preventing the use of this combination of silicon and carbon in the scientific journal Applied Physics Letters.
Nanodiamonds in the Brain
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- Geschrieben von Max-Planck-Institut für Polymerforschung
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The recording of images of the human brain and its therapy in neurodegenerative diseases is still a major challenge in current medical research. The so-called blood-brain barrier, a kind of filter system of the body between the blood system and the central nervous system, constrains the supply of drugs or contrast media that would allow therapy and image acquisition. Scientists at the Max Planck Institute for Polymer Research (MPI-P) have now produced tiny diamonds, so-called "nanodiamonds", which could serve as a platform for both the therapy and diagnosis of brain diseases.
Biological Risk Potential of Nanoparticles Studied
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- Geschrieben von Heinrich-Heine-Universität Düsseldorf
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Publication in Scientific Reports
Carbon nanoparticles are a promising tool for biomedical applications, for example for targeted transportation of biologically active compounds into cells. A team of researchers from the Physics, Medicine and Chemistry departments at Heinrich Heine University Düsseldorf (HHU) has now examined whether these particles are potentially dangerous for the organism and how cells cope with them once they have been incorporated. The findings of the interdisciplinary study have just been published in the journal Scientific Reports.
Physics That Gets Under Your Skin
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- Geschrieben von Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden
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Due to modern advances in medicine ever smaller objects are moved through the human body: nanotherapeutics, micro-implants, mini-catheters and tiny medical instruments. The next generation of minimally invasive microsurgery will enable small micro robots to move with their own drive through the body and through the tissue to transport substances and micro-objects. Therefore, new methods must be developed to locate these micro-objects precisely and to monitor their movement. Conventional methods such as ultrasound, X-ray or magnetic resonance imaging (MRI) fail either due to insufficient resolution or due to long-term damage from radioactivity or high magnetic fields.
Retina-on-a-chip Provides Powerful Tool for Studying Eye Disease
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- Geschrieben von Fraunhofer-Institut für Grenzflächen- und Bioverfahrenstechnik IGB
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Impact statement: New technology that recreates some of the complexity of the human retina may help scientists study eye disease and screen for drug side effects that harm the eye. The development of a retina-on-a-chip, which combines living human cells with an artificial tissue-like system, has been described today in the open-access journal eLife. This cutting-edge tool may provide a useful alternative to existing models for studying eye disease and allow scientists to test the effects of drugs on the retina more efficiently.
Structure of Protein Nano Turbine Revealed
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- Geschrieben von Institute of Science and Technology Austria
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IST Austria scientists determine the first structure of a cell’s rotary engine using state-of-art microscopy. Cells rely on protein complexes known as ATP synthases or ATPases for their energy needs – adenosine triphosphate (ATP) molecules power most of the processes sustaining life. Structural biologist Professor Leonid Sazanov and his research group from the Institute of Science and Technology Austria (IST Austria) in Klosterneuburg, Austria have now determined the first atomic structure of the representative of the V/A-ATPase family, filling in the gap in the evolutionary tree of these essential molecular machines. These results obtained using the latest cryo-electron microscopy methods revealed a turbine or water mill similar structure of the enzyme and have now been published in the journal Science.
Nylon as a Building Block for Transparent Electronic Devices?
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- Geschrieben von Max-Planck-Institut für Polymerforschung
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Scientists at the Max Planck Institute for Polymer Research (MPI-P) led by Dr. Kamal Asadi have solved a four decade long challenge of producing very thin nylon films that can be used for instance in electronic memory components. The thin nylon films are several 100 times thinner than human hair and could thus be attractive for applications in bendable electronic devices or for electronics in clothing.
