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Categories: Chemistry: General, Physics: Optics

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Computer Science: Quantum Computers Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

Perfecting the view on a crystal's imperfection      (via sciencedaily.com)     Original source 

Hexagonal boron nitride (hBN) has gained widespread attention and application across various quantum fields and technologies because it contains single-photon emmiters (SPEs), along with a layered structure that is easy to manipulation. The precise mechanisms governing the development and function of SPEs within hBN have remained elusive. Now, a new study reveals significant insights into the properties of hBN, offering a solution to discrepancies in previous research on the proposed origins of SPEs within the material.

Biology: Biochemistry Biology: Biotechnology Biology: Cell Biology Biology: General Biology: Microbiology Chemistry: Biochemistry Physics: Optics
Published

Switching off the light to see better      (via sciencedaily.com)     Original source 

Researchers used structured light and switchable fluorescent molecules to reduce the background light from the out-of-plane regions of microscope samples. This method allowed for the acquisition of images that surpassed the conventional resolution limit, and it may be useful for further study of cell clusters and other biological systems.

Computer Science: General Physics: Optics
Published

2D materials rotate light polarization      (via sciencedaily.com)     Original source 

Physicists have shown that ultra-thin two-dimensional materials such as tungsten diselenide can rotate the polarization of visible light by several degrees at certain wavelengths under small magnetic fields suitable for use on chips.

Chemistry: General Chemistry: Inorganic Chemistry Energy: Batteries Engineering: Graphene
Published

More economical and sustainable rechargeable batteries      (via sciencedaily.com)     Original source 

Lithium salts make batteries powerful but expensive. An ultralow-concentration electrolyte based on the lithium salt LiDFOB may be a more economical and more sustainable alternative. Cells using these electrolytes and conventional electrodes have been demonstrated to have high performance. In addition, the electrolyte could facilitate both production and recycling of the batteries.

Physics: General Physics: Optics
Published

Superradiant atoms could push the boundaries of how precisely time can be measured      (via sciencedaily.com)     Original source 

Superradiant atoms can help us measure time more precisely than ever. In a new study, researchers present a new method for measuring the time interval, the second, mitigating some of the limitations that today's most advanced atomic clocks encounter. The result could have broad implications in areas such as space travel, volcanic eruptions and GPS systems.

Chemistry: Biochemistry Chemistry: General Chemistry: Inorganic Chemistry Chemistry: Organic Chemistry
Published

New copper-catalyzed C-H activation strategy      (via sciencedaily.com)     Original source 

Inspired by what human liver enzymes can do, chemists have developed a new set of copper-catalyzed organic synthesis reactions for building and modifying pharmaceuticals and other molecules. The new reactions are expected to be widely used in drug discovery and optimization, as well as in other chemistry-based industries.

Computer Science: Quantum Computers Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

Compact quantum light processing      (via sciencedaily.com)     Original source 

An international collaboration of researchers has achieved a significant breakthrough in quantum technology, with the successful demonstration of quantum interference among several single photons using a novel resource-efficient platform. The work represents a notable advancement in optical quantum computing that paves the way for more scalable quantum technologies.

Chemistry: General Chemistry: Inorganic Chemistry Engineering: Graphene
Published

Development of organic semiconductors featuring ultrafast electrons      (via sciencedaily.com)     Original source 

Collaboration has led to the successful observation of these ultrafast electrons within conducting two-dimensional polymers.

Chemistry: General Chemistry: Inorganic Chemistry Computer Science: General
Published

Accelerating the discovery of new materials via the ion-exchange method      (via sciencedaily.com)     Original source 

Researchers have unveiled a new means of predicting how to synthesize new materials via the ion-exchange. Based on computer simulations, the method significantly reduces the time and energy required to explore for inorganic materials.

Chemistry: General Chemistry: Inorganic Chemistry Engineering: Nanotechnology Environmental: General Geoscience: Geochemistry Physics: General Physics: Optics Physics: Quantum Computing
Published

Energy scientists unravel the mystery of gold's glow      (via sciencedaily.com)     Original source 

EPFL researchers have developed the first comprehensive model of the quantum-mechanical effects behind photoluminescence in thin gold films; a discovery that could drive the development of solar fuels and batteries.

Chemistry: General Energy: Batteries Energy: Technology
Published

Mess is best: Disordered structure of battery-like devices improves performance      (via sciencedaily.com)     Original source 

The energy density of supercapacitors -- battery-like devices that can charge in seconds or a few minutes -- can be improved by increasing the 'messiness' of their internal structure. Researchers used experimental and computer modelling techniques to study the porous carbon electrodes used in supercapacitors. They found that electrodes with a more disordered chemical structure stored far more energy than electrodes with a highly ordered structure.

Chemistry: Biochemistry Chemistry: General Chemistry: Inorganic Chemistry Chemistry: Organic Chemistry
Published

From defects to order: Spontaneously emerging crystal arrangements in perovskite halides      (via sciencedaily.com)     Original source 

A new hybrid layered perovskite featuring elusive spontaneous defect ordering has been found, report scientists. By introducing specific concentrations of thiocyanate ions into FAPbI3 (FA = formamidinium), they observed that ordered columnar defects appeared in the stacked crystalline layers, taking up one-third of the lattice space. These findings could pave the way to an innovative strategy for adjusting the properties of hybrid perovskites, leading to practical advances in optoelectronics and energy generation.

Biology: Cell Biology Biology: General Biology: Microbiology Physics: Optics
Published

A better view with new mid-infrared nanoscopy      (via sciencedaily.com)     Original source 

A team has constructed an improved mid-infrared microscope, enabling them to see the structures inside living bacteria at the nanometer scale. Mid-infrared microscopy is typically limited by its low resolution, especially when compared to other microscopy techniques. This latest development produced images at 120 nanometers, which the researchers say is a thirtyfold improvement on the resolution of typical mid-infrared microscopes. Being able to view samples more clearly at this smaller scale can aid multiple fields of research, including into infectious diseases, and opens the way for developing even more accurate mid-infrared-based imaging in the future.

Chemistry: Biochemistry Chemistry: General Chemistry: Inorganic Chemistry Engineering: Nanotechnology Offbeat: General Physics: General
Published

Two-dimensional nanomaterial sets record for expert-defying, counter-intuitive expansion      (via sciencedaily.com)     Original source 

Engineers have developed a record-setting nanomaterial which when stretched in one direction, expands perpendicular to the applied force.

Chemistry: General Chemistry: Inorganic Chemistry Energy: Alternative Fuels Engineering: Nanotechnology Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geochemistry
Published

Trash to treasure -- researchers turn metal waste into catalyst for hydrogen      (via sciencedaily.com)     Original source 

Scientists have found a way to transform metal waste into a highly efficient catalyst to make hydrogen from water, a discovery that could make hydrogen production more sustainable.

Chemistry: General Chemistry: Inorganic Chemistry Chemistry: Organic Chemistry Chemistry: Thermodynamics
Published

Researchers advance pigment chemistry with moon-inspired reddish magentas      (via sciencedaily.com)     Original source 

A researcher who made color history in 2009 with a vivid blue pigment has developed durable, reddish magentas inspired by lunar mineralogy and ancient Egyptian chemistry.

Physics: General Physics: Optics
Published

Photonic computation with sound waves      (via sciencedaily.com)     Original source 

Optical neural networks may provide the high-speed and large-capacity solution necessary to tackle challenging computing tasks. However, tapping their full potential will require further advances. One challenge is the reconfigurability of optical neural networks. A research team has now succeeded in laying the foundation for new reconfigurable neuromorphic building blocks by adding a new dimension to photonic machine learning: sound waves. The researchers use light to create temporary acoustic waves in an optical fiber. The sound waves generated in this way can for instance enable a recurrent functionality in a telecom optical fiber, which is essential to interpreting contextual information such as language.

Engineering: Graphene Engineering: Nanotechnology Physics: Optics
Published

Quantum electronics: Charge travels like light in bilayer graphene      (via sciencedaily.com)     Original source 

An international research team has demonstrated experimentally that electrons in naturally occurring double-layer graphene move like particles without any mass, in the same way that light travels. Furthermore, they have shown that the current can be 'switched' on and off, which has potential for developing tiny, energy-efficient transistors -- like the light switch in your house but at a nanoscale.

Computer Science: Quantum Computers Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

Crucial connection for 'quantum internet' made for the first time      (via sciencedaily.com)     Original source 

Researchers have produced, stored, and retrieved quantum information for the first time, a critical step in quantum networking.

Chemistry: Inorganic Chemistry Physics: Optics
Published

New colorful plastic films for versatile sensors and electronic displays      (via sciencedaily.com)     Original source 

Researchers have synthesized triarylborane (TAB) compounds that exhibit unusual optical responses upon binding to certain anions. They also synthesized thin polymer films that incorporate the TAB and retain the sensing as well as the light emission properties of the TAB. This work is an important advance in plastic research and has applications in analyte sensing as well as electronic display technologies.