A biohybrid device that combines flexible electronics with human stem cells could drive advanced neuroprosthetic limbs or improve function in paralysed limbs.
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Can an MRI read your mind? Researchers develop a language decoder that translates brain activity data from functional MRI scans into a continuous stream of text.
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In quantum information theory, quantum discord is a measure of nonclassical correlations between two subsystems of a quantum system. It includes correlations that are due to quantum physical effects but do not necessarily involve quantum entanglement.
The notion of quantum discord was introduced by Harold Ollivier and Wojciech H. Zurek and, independently by Leah Henderson and Vlatko Vedral. Olliver and Zurek referred to it also as a measure of quantumness of correlations. From the work of these two research groups it follows that quantum correlations can be present in certain mixed separable states; In other words, separability alone does not imply the absence of quantum correlations. The notion of quantum discord thus goes beyond the distinction which had been made earlier between entangled versus separable (non-entangled) quantum states.
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The notion of quantum discord was introduced by Harold Ollivier and Wojciech H. Zurek and, independently by Leah Henderson and Vlatko Vedral. Olliver and Zurek referred to it also as a measure of quantumness of correlations. From the work of these two research groups it follows that quantum correlations can be present in certain mixed separable states; In other words, separability alone does not imply the absence of quantum correlations. The notion of quantum discord thus goes beyond the distinction which had been made earlier between entangled versus separable (non-entangled) quantum states.
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New microscopy technique images the mechanical properties of developing embryos at unprecedented speed, while capturing spatial details on the scale of microns.
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Thermosiphon (or thermosyphon) is a method of passive heat exchange, based on natural convection, which circulates a fluid without the necessity of a mechanical pump. Thermosiphoning is used for circulation of liquids and volatile gases in heating and cooling applications such as heat pumps, water heaters, boilers and furnaces. Thermosiphoning also occurs across air temperature gradients such as those utilized in a wood fire chimney or solar chimney.
This circulation can either be open-loop, as when the substance in a holding tank is passed in one direction via a heated transfer tube mounted at the bottom of the tank to a distribution point—even one mounted above the originating tank—or it can be a vertical closed-loop circuit with return to the original container. Its purpose is to simplify the transfer of liquid or gas while avoiding the cost and complexity of a conventional pump.
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This circulation can either be open-loop, as when the substance in a holding tank is passed in one direction via a heated transfer tube mounted at the bottom of the tank to a distribution point—even one mounted above the originating tank—or it can be a vertical closed-loop circuit with return to the original container. Its purpose is to simplify the transfer of liquid or gas while avoiding the cost and complexity of a conventional pump.
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A solid state electronic device array that produces time-modulated light at tuneable wavelengths has been unveiled by researchers.
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Thermal shock is a phenomenon characterized by a rapid change in temperature that results in a transient mechanical load on an object. The load is caused by the differential expansion of different parts of the object due to the temperature change. This differential expansion can be understood in terms of strain, rather than stress. When the strain exceeds the tensile strength of the material, it can cause cracks to form and eventually lead to structural failure.
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Combining multispectral infrared imaging with machine learning could improve the accuracy of fluorescence-guided cancer surgery.
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A new method for creating and controlling exchange bias in an antiferromagnetic single-layer film has been developed by researchers.
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Researchers observe giant tunnelling magnetoresistance in a magnetic tunnel junction made from the antiferromagnet CrSBr.
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A new X-ray microscopy technique could overcome the spatial resolution limits of today’s X-ray imaging technologies.
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