Electronically polarized systems are physical systems in which the electronic charge distribution is displaced relative to the nuclei, producing a net electric polarization that can be static, induced, or dynamic. This polarization arises from external electric fields, internal crystal fields, broken inversion symmetry, interfaces, or collective electronic instabilities, and is described microscopically by changes in electronic wavefunctions and macroscopically by a polarization vector field. Such systems include dielectrics, ferroelectrics, polar semiconductors, and heterostructures where bound or itinerant electrons respond anisotropically, strongly influencing dielectric response, excitations, screening, charge transport, and nonlinear optical properties central to condensed-matter and materials physics.
Microbial bioelectronic sensors use living bacteria that can create an electrical signal in response to the presence of a target substance, or analyte. These types of sensors offer many advantages over other types of biosensors ...
Molecular & Computational biology
Mar 14, 2026
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131
Multiferroic metals are materials that exhibit both electric polarization and magnetic order in the same crystal—a state known as multiferroicity. Because these properties coexist, they can interact through magnetoelectric ...
Condensed Matter
Mar 13, 2026
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67
Shrinking ferroelectric tunnel junctions can significantly boost their performance in memory devices, as reported by researchers from Science Tokyo. The team fabricated nanoscale junctions directly on silicon substrates and ...
Nanophysics
Feb 24, 2026
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23
Conventional electronics process information leveraging the electrical charge of electrons. Over the past few decades, some electronics engineers have been exploring the potential of a different type of device that instead ...
When an electron travels through a polar crystalline solid, its negative charge attracts the positively charged atomic cores, causing the surrounding crystal lattice to deform. The electron and lattice distortion then move ...
Condensed Matter
Feb 17, 2026
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139
If you've ever watched a glass blower at work, you've seen a material behaving in a very special way. As it cools, the viscosity of molten glass increases steadily but gradually, allowing it to be shaped without a mold. Physicists ...
A novel type of three-dimensional (3D) polar topological structure, termed the "polar chiral bobber," has been discovered in ferroelectric oxide thin films, demonstrating promising potential for high-density multistate non-volatile ...
Nanophysics
Feb 9, 2026
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21
A research team led by Professor Youngwook Kim from the Department of Physics and Chemistry, DGIST, in collaboration with the research team of Professor Gil Young Cho at KAIST, have discovered a new memory principle that ...
Nanophysics
Feb 3, 2026
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116
Researchers from the Institute of Metal Research (IMR) of the Chinese Academy of Sciences have developed a new ferroelectric ultraviolet photodetector material that overcomes the long-standing performance limitations of conventional ...
Condensed Matter
Jan 28, 2026
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46
Even with regular brushing, teeth can become stained from genetic factors or consuming foods and drinks like tomatoes and coffee. Chemical whiteners can help, but they can also damage teeth in the process. So, researchers ...
Bio & Medicine
Jan 26, 2026
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