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Categories: Chemistry: Thermodynamics, Physics: Optics

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Energy: Nuclear Energy: Technology Physics: General Physics: Optics
Published

Milestone for novel atomic clock      (via sciencedaily.com)     Original source 

An international research team has taken a decisive step toward a new generation of atomic clocks. The researchers have created a much more precise pulse generator based on the element scandium, which enables an accuracy of one second in 300 billion years -- that is about a thousand times more precise than the current standard atomic clock based on caesium.

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

Separating molecules requires lots of energy. This new, heat-resistant membrane could change that      (via sciencedaily.com)     Original source 

A research team has created a new, heat-resistant membrane that can withstand harsh environments -- high temperatures, high pressure and complex chemical solvents -- associated with industrial separation processes. It could eventually be used as a less energy intensive alternative to distillation and other industrial processes that separate molecules that ultimately serve as ingredients in medicine, chemicals and other products.

Chemistry: Biochemistry Physics: General Physics: Optics
Published

Making a femtosecond laser out of glass      (via sciencedaily.com)     Original source 

Scientists show that it is possible to make a femtosecond laser that fits in the palm of one's hand using a glass substrate.

Chemistry: General Chemistry: Inorganic Chemistry Chemistry: Organic Chemistry Energy: Alternative Fuels Environmental: General Geoscience: Geochemistry Physics: Optics
Published

How organic solar cells could become significantly more efficient      (via sciencedaily.com)     Original source 

The sun sends enormous amounts of energy to the earth. Nevertheless, some of it is lost in solar cells. This is an obstacle in the use of organic solar cells, especially for those viable in innovative applications. A key factor in increasing their performance: Improved transport of the solar energy stored within the material. Now a research group has shown that certain organic dyes can help build virtual highways for the energy.

Chemistry: Biochemistry Chemistry: Thermodynamics Physics: General Physics: Optics Physics: Quantum Physics
Published

Light and sound waves reveal negative pressure      (via sciencedaily.com) 

Negative pressure is a rare and challenging-to-detect phenomenon in physics. Using liquid-filled optical fibers and sound waves, researchers have now discovered a new method to measure it. In collaboration with the Leibniz Institute of Photonic Technologies in

Computer Science: Artificial Intelligence (AI) Computer Science: General Engineering: Robotics Research Physics: Optics
Published

Efficient training for artificial intelligence      (via sciencedaily.com) 

New physics-based self-learning machines could replace the current artificial neural networks and save energy.

Chemistry: Thermodynamics Energy: Technology Environmental: General Environmental: Water
Published

No shortcuts: New approach may help extract more heat from geothermal reservoirs      (via sciencedaily.com) 

Geothermal heat offers a promising source of renewable energy with almost zero emissions, but it remains a relatively expensive option to generate electricity. A new technique may help prevent 'short-circuits' that can cause geothermal power plants to halt production, potentially improving the efficiency of geothermal power, the researchers said.

Energy: Technology Physics: Optics
Published

Material would allow users to 'tune' windows to block targeted wavelengths of light      (via sciencedaily.com) 

Researchers have demonstrated a material for next generation dynamic windows, which would allow building occupants to switch their windows between three modes: transparent, or 'normal' windows; windows that block infrared light, helping to keep a building cool; and tinted windows that control glare while maintaining the view.

Physics: Optics
Published

New method makes microcombs ten times more efficient      (via sciencedaily.com) 

Microcombs can help us discover planets outside our solar system and track new diseases in our bodies. But current microcombs are inefficient and unable to reach their full potential. Now, researchers have made microcombs ten times more efficient. Their breakthrough opens the way to new discoveries in space and healthcare and paves the way for high-performance lasers in a range of other technologies.

Chemistry: Thermodynamics Energy: Alternative Fuels Engineering: Nanotechnology Physics: Optics
Published

Chameleon-inspired coating could cool and warm buildings through the seasons      (via sciencedaily.com) 

As summer turns to fall, many people will be turning off the air conditioning and firing up heaters instead. But traditional heating and cooling systems are energy intensive, and because they typically run on fossil fuels, they aren't sustainable. Now, by mimicking a desert-dwelling chameleon, a team has developed an energy-efficient, cost-effective coating. The material could keep buildings cool in the summers -- or warm in the winters -- without additional energy.

Chemistry: Biochemistry Chemistry: Inorganic Chemistry Physics: Optics
Published

Novel organic light-emitting diode with ultralow turn-on voltage for blue emission      (via sciencedaily.com) 

An upconversion organic light-emitting diode (OLED) based on a typical blue-fluorescence emitter achieves emission at an ultralow turn-on voltage of 1.47 V. The technology circumvents the traditional high voltage requirement for blue OLEDs, leading to potential advancements in commercial smartphone and large screen displays.

Chemistry: Thermodynamics Energy: Technology Physics: General Physics: Optics
Published

Electrons take flight at the nanoscale      (via sciencedaily.com) 

A study showing how electrons flow around sharp bends, such as those found in integrated circuits, has the potential to improve how these circuits, commonly used in electronic and optoelectronic devices, are designed.

Chemistry: Inorganic Chemistry Physics: Optics
Published

Novel ligands for transition-metal catalysis of photoreactions      (via sciencedaily.com) 

Transition metals exchange electrons with supporting ligands to form complexes that facilitate reaction catalysis in several industries, like pharmaceutical production. Both the metal center and the ligand moiety have pivotal roles in enabling catalysis. While numerous transition metal-catalyzed photoreactions have been developed, only a few new ligands have been reported. Researchers from Chiba University have now developed novel ligands to create transition metal complexes, defining new reaction capabilities.

Chemistry: Biochemistry Environmental: Water Geoscience: Environmental Issues Physics: Optics
Published

Laser-based ice-core sampling for studying climate change      (via sciencedaily.com) 

Researchers have developed a new laser-based sampling system for studying the composition of ice cores taken from glaciers. The new system has a 3-mm depth-resolution and is expected to help reconstruct continuous annual temperature changes that occurred thousands to hundreds of thousands of years ago, which will help scientists understand climate change in the past and present.

Energy: Alternative Fuels Environmental: General Environmental: Water Physics: General Physics: Optics
Published

Step change in upconversion the key to clean water, green energy and futuristic medicine      (via sciencedaily.com) 

Achieving photochemical upconversion in a solid state is a step closer to reality, thanks to a new technique that could unlock vital innovations in renewable energy, water purification and advanced healthcare.

Chemistry: Biochemistry Chemistry: Thermodynamics
Published

Atomic layer deposition route to scalable, electronic-grade van der Waals Te thin films      (via sciencedaily.com) 

A research team has made a significant breakthrough in thin film deposition technology.

Chemistry: Biochemistry Physics: Optics
Published

New camera offers ultrafast imaging at a fraction of the normal cost      (via sciencedaily.com) 

In a new paper, researchers report a camera that could offer a much less expensive way to achieve ultrafast imaging for a wide range of applications such as real-time monitoring of drug delivery or high-speed lidar systems for autonomous driving. Researchers show that their new diffraction-gated real-time ultrahigh-speed mapping (DRUM) camera can capture a dynamic event in a single exposure at 4.8 million frames per second.

Chemistry: General Chemistry: Thermodynamics Energy: Technology Environmental: General Environmental: Water Geoscience: Geochemistry
Published

Researchers make strides in harnessing low-grade heat for efficient energy conversion      (via sciencedaily.com) 

A research team has achieved significant breakthroughs in harnessing low-grade heat sources (<100 °C) for efficient energy conversion.

Chemistry: Biochemistry Chemistry: General Chemistry: Thermodynamics Environmental: Water Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Severe Weather Offbeat: Earth and Climate Offbeat: General
Published

Hot summer air turns into drinking water with new gel device      (via sciencedaily.com) 

Researchers have focused on the moisture present in the air as a potential source of drinking water for drought-stressed populations. They reached a significant breakthrough in their efforts to create drinkable water out of thin air: a molecularly engineered hydrogel that can create clean water using just the energy from sunlight.

Biology: Microbiology Chemistry: Thermodynamics
Published

You can leave your gloves on: New material burns viruses, safe for skin      (via sciencedaily.com) 

A new material that packs deadly heat for viruses on its outer surface while staying cool on the reverse side could be used to make sustainable, multiuse personal protective equipment.