Junctions, as physical systems, are localized regions where two or more distinct materials, phases, or structural domains meet and interact, often exhibiting emergent properties not present in the bulk constituents. They can involve interfaces such as metal–semiconductor (Schottky), p–n semiconductor, grain boundaries, or superconducting weak links, and are characterized by spatially varying fields, charge distributions, or order parameters. Junction behavior is governed by boundary conditions, continuity relations, and interfacial energetics, and is central to transport phenomena, including charge, heat, or mass transfer, as well as to device functionality in electronics, photonics, and materials engineering.
Physicists from Emory University have led work to develop a microscopic, nonlinear light source that can be switched on, off or tuned to a particular intensity by an electrical "knob." The paper is published in the journal ...
Optics & Photonics
May 28, 2026
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Scientists led by Sergey Troyanovsky, Ph.D., professor of Dermatology and of Cell and Developmental Biology, have uncovered new intracellular mechanisms promoting cell-cell adhesion, a process disrupted in a variety of skin ...
Cell & Microbiology
Mar 30, 2026
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4
Phonons are the quantum units of mechanical vibration. They describe how motion propagates through a solid at the smallest possible scales, in much the same way that electrons describe electric currents. Because phonons can ...
Condensed Matter
Mar 25, 2026
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44
The high-performance semiconductor devices powering smartphone displays, AI computing, EV batteries and more are increasingly incorporating 2D materials to overcome silicon's scaling limits. To optimize these technologies, ...
Nanophysics
Mar 20, 2026
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50
Researchers at UCLA have discovered a way to dramatically improve how electrical current enters perovskite semiconductors, an emerging class of materials with enormous potential for next-generation electronics. Their research ...
Nanophysics
Mar 19, 2026
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87
Over the past decades, electronics engineers have been trying to develop increasingly smaller devices that can store information reliably, even when they are not powered on. A promising type of non-volatile memory device ...
By placing single-atom-thick adlayers of p-block metals on commonly employed gold electrodes (d-block), a research team at National Taiwan University has successfully quantified the "interfacial hopping integral" between ...
Nanophysics
Mar 13, 2026
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46
Researchers from the Department of Physics and the University Institute of Materials at the University of Alicante (UA) and the Low Temperature and High Magnetic Field Laboratory at the Autonomous University of Madrid (UAM) ...
Condensed Matter
Mar 10, 2026
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361
The low-noise, high-gain properties needed for high-performance quantum computing can be realized in a microwave photonic circuit device called a Josephson traveling-wave parametric amplifier (JTWPA), RIKEN researchers have ...
Superconductivity
Feb 17, 2026
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92
Researchers at the Institute for Molecular Science (NINS, Japan) and SOKENDAI have demonstrated a more than 2000% voltage-induced enhancement of near-field nonlinear optical responses. To achieve this giant modulation, they ...
Optics & Photonics
Feb 3, 2026
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