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Donnerstag, 18. Februar 2021 00:00:00 Technik News
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Avi Loeb, a Harvard professor of astronomy, suggested in a recent book that asteroid Oumuamua is indeed an alien spaceship. But how feasible is this? And how come most scientists disagree with the claim?

Scientists have provided supporting evidence for the existence of a nonlinear dissipation mechanism in mechanical systems.

Scientists have found a new way of enhancing the performance of electrochemical micro-sensors. This discovery could lead to the detection of biomolecules, such as dopamine, at lower concentrations than is possible today.

Magnetic nanoparticles biosynthesized by bacteria might soon play an important role in biomedicine and biotechnology. Researchers have now developed and optimised a process for the isolation and purification of these particles from bacterial cells.

Atomic vapors are among the most promising platforms for constituting the nodes of future quantum networks. Researchers have now realized a unique interface between an extremely thin optical fiber and an atomic vapor at ambient temperatures.

Physicists have discovered an affordable method that makes it possible to use transparent materials for solar cells while preserving their efficiency. The new technology is based on the method of doping but without the use of expensive special-purpose equipment.

Researchers demonstrate composite materials with exceptional EMI shielding in the GHz and sub-THz frequency ranges while remaining electrically insulating. The composites use unusual fillers - chemically exfoliated bundles of quasi-one-dimensional van der Waals materials. The exceptional current conduction properties combined with extremely large aspect ratio of these composites couple strongly to high-frequency RF radiation while remaining electrically insulating in DC measurements.

A team of researchers is working toward innovating and advancing platelet-inspired nanotechnology systems to treat severe bleeding in surgery and trauma.

Researchers have developed a bioelectrosynthetic process in which electroactive bacteria convert CO/CO2 into useful metabolites like acetate and volatile fatty acids using electricity as the reducing power.

Researchers used recycled plastic cups and silk cocoon waste to develop a soft and skin-friendly self-powered sensor, which can be used to sense human activities.

Engineers have created a four-legged soft robot that only needs a constant source of pressurized air for all its functions, including its controls and locomotion systems.

Researchers used advanced transmission electron microscopy (TEM) techniques to see mesocrystals form in solution in real time. What they saw runs contrary to conventional wisdom and their insights could one day help scientists design materials for energy storage and understand how minerals in soil form.

Scientists use theoretical calculations to predict the possibility of 'massless' electrons in topological insulators excited with lasers, which may lead to faster and more efficient electronic devices.

Despite lingering obstacles, practical lasing devices based on these tiny specs of semiconductor matter are just around the corner.

Vacuum chambers are limited in volume and products that go inside are better when they are smaller. PI offers 6-axis precision motion systems, based on parallel kinematics. These hexapod positioners are more compact than conventional multi-axis stages and provide more versatility at the same time, ideal for vacuum based high precision motion and alignment tasks with optics, fibers, and semiconductors.

To capture the ancient, cold light from the cosmic microwave background, researchers use specialized telescopes equipped with ultrasensitive cameras for detecting millimeter-wavelength signals. The next-generation cameras will contain up to 100,000 superconducting detectors.Scientists have developed a new type of metamaterials-based antireflection coating for the silicon lenses used in these cameras.

Chemists have developed a method for more sustainable recycling of polyethylene-like plastics.

Researchers have developed a mechanism for capturing space debris. This has now been successfully tested under space conditions onboard the International Space Station.

Scientists show that under certain circumstances magnetic field sensing microswimmers can self-organize into a new phase whose theoretical description shares formal similarities with that of ultra-cold quantum gases.

Beyond aesthetics, holograms on food - specifically, edible holograms - could be used to reduce packaging needs, for example, as information about nutritional content or labels could be printed directly onto the food item. To that end, researchers have developed a quick and low-cost fabrication method for producing holograms on edible substrates. They developed a direct laser interference pattering method to directly pattern one-dimensional nanostructures on corn syrup films.

Facebook hat mit einer harten Konfrontation auf ein geplantes Mediengesetz in Australien reagiert und sämtliche Nachrichteninhalte blockiert. Der unangekündigte Schritt sorgt für Aufruhr und Zorn.

Epic Games beschwert sich bei der EU-Kommission über Apple. Die beiden Unternehmen überziehen sich seit dem Sommer mit Klagen. Für Apple steht viel auf dem Spiel.

Apple-Expertinnen und -Experten gibt es unzählige. Gehören Sie dazu? Hier, unsere 10 Fragen, viel Glück!

Smarte Uhren helfen, das Leben positiver zu gestalten. Das kann ganz schön anstrengend sein. Sechs Probleme, die sich im Alltag mit Smartwatch stellen – und was Sie dagegen tun können.

Auf unsere Tipps für Smartphone und Tablet gab es vielfältige Publikumsreaktionen. Hier nochmals fünf, diesmal von Lesern und Zuschauerinnen.

Katherine Maher hat dem grössten Online-Lexikon einen Verhaltenskodex verpasst. Nun geht sie. Der Kampf gegen Trolle und für Autorinnen wird auch ihre Nachfolger beschäftigen.

Betriebssysteme sind auf Effizienz und Funktionalität getrimmt. Dabei kommen Spass und die individuelle Note zu kurz, bedauert unser Autor.

Das soziale Plaudernetzwerk ist fulminant gestartet. Doch nun wollen Facebook und Twitter unsere Aufmerksamkeit zurück – und setzen auf eine bewährte Strategie.

Der iPhone-Konzern arbeitet seit Jahren an kleinen Sendern, die man mit dem Handy aufspüren kann. Nun kommt Samsung Apple mit den Smarttags zuvor.

Windows mit den Standardeinstellungen zu nutzen, ist wie in einer möblierten Wohnung zu hausen. Wir zeigen, wie Sie das Betriebssystem optisch und funktional perfektionieren.

Die Anhänger des Milliardärs folgen ihm – egal wohin. Mit einem Tweet befeuert er das Rally der Kryptowährung Dogecoin.

Diebe wollen unsere Nutzerdaten, denn diese sind zu einer digitalen Währung geworden. Die Methoden sind trickreich, aber man kann sich verteidigen. Hier unsere Tipps.