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Pores with a Memory

Porous polymer films with shape memory


Whether for separation processes, photovoltaics, catalysis, or electronics, porous polymer membranes are needed in many fields. Membranes with micropores that switch between different shapes and/or sizes would expand the possibilities. Scientists have introduced a process that produces porous ...


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Prelithiation strategy enhances battery performance at low temperatures


When it is cold in winter, cars tend to have starting problems. This is not much better with electric cars, which inevitably lose capacity of their rechargeable lithium-ion batteries at freezing temperatures. Now, Chinese scientists have offered a strategy to avoid plunging battery kinetics. In a ...


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More solar power thanks to titanium


Earth-abundant, cheap metals are promising photocatalytic electrode materials in artificial photosynthesis. A team of Chinese scientists now reports that a thin layer of titania beneath hematite nanorods can boost the performance of the photoanode. As outlined in their report, the nanostructured ...


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Man versus (synthesis) machine

Active machine learning for the discovery and crystallization of gigantic polyoxometalate molecules


Who is the better experimentalist, a human or a robot? When it comes to exploring synthetic and crystallization conditions for inorganic gigantic molecules, actively learning machines are clearly ahead, as demonstrated by British Scientists in an experiment with polyoxometalates. Polyoxometalates ...


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Self-folding origami

Chemical "programming" to induce Nafion foil to fold itself


Plastic with a thousand faces: A single piece of Nafion foil makes it possible to produce a broad palette of complex 3D structures. Researchers describe how they use simple chemical "programming" to induce the foil to fold itself using origami and kirigami principles. These folds can be ...


Short, Ultrashort, Sub-Cycle Short

Making light pulses ever-shorter is one of the goals in ultrafast optics.


Ultrashort light pulses are a valuable achievement. They make it possible to observe chemical reactions, opening up the field of femtochemistry. Other current and/or future applications include high capacity telecommunications systems, photonic switching devices, optical coherence tomography, and ...


Three wavelengths will do

Practical approach for assessing the melanin and blood content of the skin


Many factors can change skin pigmentation, including aging, exposure to UV light, certain drugs, as well as certain diseases. A simple technique for measuring skin pigmentation could be a helpful tool for research and diagnostics. The same goes for measuring the skin blood content. Alteration of ...


Musical molecules

Nanofibers align to the sound of Beethoven and Mozart


Humans create and perform music for a variety of purposes such as aesthetic pleasure, healing, religion, and ceremony. Accordingly, a scientific question arises: Can molecules or molecular assemblies interact physically with the sound vibrations of music? In the journal ChemPlusChem, Japanese ...


Laser diodes versus LEDs


Solid-state lighting (SSL) has recently become competitive with conventional light sources and is now the most efficient source of high color quality white light ever created. At the heart of SSL is the light-emitting diode (LED). The current standard architecture for SSL is the ...


Growing gallium nitride crystals


Gallium nitride (GaN) is an important material for the semiconductor industry. It features a wide band gap and high thermal conductivity at room temperature, which make it a good material for optoelectronic devices and high-performance radio-frequency microdevices. In the European Journal of ...


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