conductivity

Electrically conductive "smart fabrics" have many potential applications, but their specialized fibers typically aren't as soft and flexible as those made of regular materials. An experimental new two-faced fiber, however, is both flexible and conductive.Developed by a team of scientists at Washington State University, the fiber is made of two substances: cotton cellulose obtained from recycled T-shirts, and an existing conductive synthetic polymer known as polyaniline.The polyaniline is combined with the cotton cellulose…

Researchers have developed a metallic gel that is highly electrically conductive and can be used to print three-dimensional (3D) solid objects at room temperature. Printed objects can be engineered to change shape as the gel dries; a phenomenon called ‘4D printing,’ with the fourth dimension being time. This image shows a metallic spider that was printed at room temperature using the metallic gel, and which assembled and solidified into its final 3D shape via 4D printing. Credit: Michael Dickey, NC State…

Researchers develop a new ultra-high-density sulfonic acid polymer electrolyte membrane for fuel cells, which can be used for vehicles and combined heat and power systems. Credit: Atsushi NoroResearchers at Nagoya University in Japan, under a project commissioned by the New Energy and Industrial Technology Development Organization (NEDO), have created poly(styrenesulfonic <span class="glossaryLink" aria-describedby="tt" data-cmtooltip="<div class=glossaryItemTitle>acid</div><div…

Measurements on the ground were made by eight groups, matching the route of the Cessna aircraft. The measurements were taken at intervals of a few meters. The temperature at altitude was around -15 °C with, at times, very strong wind. Credit: Eurac Research | Maurizio Gretter Over the past few days, a small Cessna aircraft carrying an experimental technology flew over the Senales Valley in South Tyrol between Vernago Lake and…

Scientists at Georgia Tech have discovered a new quantum state in a quirky material. In a phenomenon never before seen in anything else, the team found that applying a magnetic field increased the material’s electrical conductivity by a billion percent.Some materials are known to change their conductivity in response to a changing magnetic field, a property called magnetoresistance. But in the new study, the material does so to an incredible degree, exhibiting colossal magnetoresistance.The material is an alloy of…

Bacteria producing nanowires made up of cytochrome OmcS. Credit: Ella Maru StudioThere is a global web of tiny bacteria-generated nanowires in the soil and oceans that “breathe” by exhaling excess electrons, composing an intrinsic electrical grid for the natural world.In a new research study, <span class="glossaryLink" aria-describedby="tt" data-cmtooltip="<div class=glossaryItemTitle>Yale University</div><div class=glossaryItemBody>Established in 1701, Yale University is a…

Conductive structures at depths between 28 and 39 km, corresponding to the lower crust and uppermost mantle, colored by density anomaly. Red indicates below average density at this depth indicating a liquid conductive phase, blue indicates neutral to above average density, associated with a solid conductive phase or dry melt. The location of the Yellowstone Hotspot is marked by a yellow star. Credit: Geophysical Research Letters (2022). DOI:…