← Back

Electronic, Optical and Magnetic Materials

Materials for electronic and photonic applications, including semiconductors, superconductors, magnetic materials, photonic crystals, metamaterials, and quantum materials

6 papers

Papers

Flexoelectricity and surface ferroelectricity of water ice

This research shows that ice can generate electricity when bent (flexoelectricity), and the near-surface regions of ice slabs can become ferroelectric at low temperatures. This surface ferroelectricity may play a role in the electrification of ice-graupel collisions in thunderstorms, although other factors could also be involved. The flexoelectric coefficient of ice is comparable to some dielectric ceramics, potentially enabling low-cost transducers in cold environments.

★ ★ ★ ★ ☆
Electronic, Optical and Magnetic Materials Sep 03, 01:38 PM

Revealing Symmetry-Broken Superconducting Configurations by Density Functional Theory

This computational study suggests that the formation of straight one-dimensional tunnels (SODTs) in a material's atomic structure is associated with superconductivity at 0 K. They found these tunnels in several known superconductors and predict their existence in other materials not yet experimentally confirmed. However, the accuracy of the method is limited by current computational constraints, and the study mainly focused on simpler materials like pure elements and MgB2, with less extensive exploration of complex systems like YBCO.

★ ★ ★ ★ ☆
Electronic, Optical and Magnetic Materials Aug 18, 03:56 PM

Heterogeneous Thermochromic Hydrogel Film Based on Photonic Nanochains

Researchers developed a new type of color-changing film that responds quickly to temperature changes by combining tiny chains of particles with a heat-sensitive gel. The film shows a faster color change than previous materials due to the difference in how much the gel and particle chains shrink when heated. It also has good mechanical strength and maintains its color-changing ability over multiple heating and cooling cycles.

★ ★ ★ ★ ☆
Electronic, Optical and Magnetic Materials Aug 10, 07:47 PM

Ultrahigh Resolution X-Ray Imaging With Thin-Film Scintillators Based on Aggregation-Induced Delayed Fluorescence Luminogens

This study introduces a new flexible X-ray screen using aggregation-induced delayed fluorescence (AIDF) luminogens. These screens show high resolution and sensitivity, exceeding those of many existing materials. The study's findings suggest a promising future for flexible and high-performance X-ray imaging.

★ ★ ★ ★ ☆
Electronic, Optical and Magnetic Materials Aug 09, 12:18 PM

Geminate labels programmed by two-tone microdroplets combining structural and fluorescent color

Researchers created "two-tone" microdroplets that display different information in reflective and fluorescent states. These microdroplets combine structural color from liquid crystals and fluorescent dyes, enabling encrypted patterns like QR codes to be hidden under seemingly normal images, enhancing anti-counterfeiting measures.

★ ★ ★ ★ ☆
Electronic, Optical and Magnetic Materials Jul 14, 10:59 AM