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Phys.org / Starch-based sensor changes color to indicate moisture in food packaging
Brazilian researchers have developed a biodegradable, starch-based sensor that changes color when moisture enters food packaging. With the addition of cobalt chloride, the sensor changes from blue to pink as moisture levels ...
Phys.org / Graphene measurements reveal energy-loss and quantum-coherence exponents diverge under gate control
Scientists have shown that the two exponents (inelastic scattering exponent and dephasing exponent) commonly used to describe electron scattering in graphene do not necessarily follow the same behavior. Using gated epitaxial ...
Phys.org / Spin waves inside a nano-oscillator imaged for the first time
For the first time, researchers have directly imaged the magnetization dynamics inside a spin Hall nano-oscillator—a nanoscale device that converts direct current into tunable microwave signals and is a promising building ...
Phys.org / Injectable nanoparticles make blind retinas respond to light in preclinical study
An international research team has developed microscopic particles that can make blind retinas respond to light. The particles act as tiny light receptors. Researchers inject them into the eye, where they settle close to ...
Phys.org / Liquid crystal takes page from steel in surprising phase transition
A type of transformation best known for hardening steel and enabling shape-memory alloys may also occur in a much softer class of materials, according to new research from Rice University. Researchers in the departments of ...
Phys.org / Q&A: Tiny spores for a big critical minerals challenge
Scientists at the Department of Energy's (DOE) Oak Ridge National Laboratory (ORNL) are exploring how durable, customizable bacterial spores could capture rare earth elements (REE) from acid mine drainage and other metal-containing ...
Phys.org / Cooling liquids reveal self-limiting particle clusters behind glass transition
Before diving into the mystery of glass, theoretical physicist Corentin Laudicina takes us back to high school physics for a moment. Although he has spent years studying exactly what happens in a material during the glass ...
Phys.org / Europe can lower emissions without deindustrializing, say researchers
The European Union has committed to achieving climate neutrality by 2050, a process that will require rapid and substantial reductions in greenhouse gas emissions across all economic sectors.
Phys.org / Electron and photon beams drive same gold-forming reaction toward different nanoscale structures
Beauty and mystery—it is hard to imagine a more alluring combination, and this is precisely what we encounter when we observe phenomena in the nanoworld. But are we really sure that observations made using modern microscopic ...
Phys.org / Disorder is key to tuning a high-temperature superconductor
Cornell physicists have discovered that minimizing disorder, not varying electron count, is the key factor for controlling superconductivity in the unique material iron selenide (FeSe), a new insight for understanding high-temperature ...
Tech Xplore / Steelmaking waste could store solar energy, with electric arc furnace slag leading early tests
Storing energy as heat is a proven pathway to address the challenge solar power faces when it's dark or cloudy outside by enabling the capture, storage and on-demand release of thermal energy. The process, called high-temperature ...
Phys.org / A 6-nanometer vapor barrier insulates ice during rapid heating
Put a drop of water into a very hot pan, and it can skitter across the surface on a cushion of vapor. This is known as the Leidenfrost effect. Now, scientists have observed a related phenomenon involving ice and an extremely ...
