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Tag Archives: crystals

Scientists find that these breathtaking spiral beehives have a lot in common with crystals

Humans have made building spaces an art form, but we’re not the only species with such dazzling achievements. A particular genus of Southeast Asian and Australian stingless bees really takes this idea to another level and creates spiral beehives that compete with New York’s Guggenheim. We know that bees are smart, but it was a bit puzzling how Tetragonula Bees …

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Liquid crystals produce easily readable, color-changing sensors

PME scientists and engineers have developed a method to stretch and tension liquid crystals to produce different colors. This could be used in intelligent coatings, sensors and portable electronics. Photo credit: Oleg Lavrentovich, Liquid Crystal Institute, Kent State University Chameleons are famous for their color-changing skills. Depending on their body temperature or mood, their nervous system drives skin tissue that …

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New photonic liquid crystals could lead to next-generation displays and advanced photonic applications

10th November 2019 ( Nanowerk News ) A new technique for changing the structure of liquid crystals could lead to the development of fast-reacting liquid crystals suitable for next generation displays, e.g. For example, 3-D, augmented and virtual reality and advanced photonic applications such as mirrorless lasers, biosensors and fast / slow light generation, according to an international team of …

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The secret behind crystals that shrink when heated

This animation shows how solid crystals of scandium fluoride shrink when heated. While the bonds between scandium (green) and fluorine atoms (blue) remain relatively rigid, the fluorine atoms oscillate independently along the sides of the cubic crystals, resulting in a wide range of distances between adjacent fluorine atoms. The higher the temperature, the greater the kinking on the sides of …

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Alien crystals, as they are not found on Earth, could crust the edges of the Titan lakes

Scientists have modeled titanium-like conditions in a laboratory and found that organic molecules from the titanium atmosphere could form rings of foreign crystals around the methane lakes that cover the surface of the Saturn moon. Previously, the team led by NASA's Jet Propulsion Laboratory researchers discovered two of these "molecular minerals." Now they have discovered a third substance consisting of …

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Saturn's moon Titan might be covered with extraterrestrial crystals

False-colored near-infrared view of the northern hemisphere of Titan taken by the NASA spacecraft Cassini showing the seas and lakes of the moon. Orange areas near some of them may be deposits of organic vaporization minerals left by the retreat of liquid hydrocarbon. Photo credits: NASA / JPL-Caltech / Space Science Institute The cold seashores of Saturn's moon, Titan, may …

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X-ray technology illuminates tiny, rare crystals in a new light

These diagrams show the atomic crystal structure of ognitite. On the left, atoms in the crystal structure are shown in red (nickel), white (tellurium) and gray (bismuth). On the right a polyhedral representation of the crystal structure. Photo credits: Mineralogical Magazine, DOI: 10.1180 / mgm.2019.31 Like a tiny needle in a sprawling hay field, a ten-million -three-meter single crystal grain …

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2D crystals that match the 3D curves are a burden on the development of quantum devices

Strain-tolerant, single-layer triangular crystals of WS2 were grown on SiO2 substrates that were patterned with donut-shaped columns, as shown in the scanning electron microscope (below) and atomic force microscope (center) picture elements. The curvature of the columns induced voltages in the overlying crystals that locally altered their optoelectronic properties, as shown in bright areas of photoluminescence (top). Credit: Christopher Rouleau …

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