In physics, 2-dimensional systems are idealized physical systems whose relevant degrees of freedom are confined to a plane or an effectively two-dimensional manifold, such that dynamics and interactions occur predominantly within two spatial dimensions. They exhibit distinct phenomena compared with three-dimensional counterparts, including modified density of states, altered screening and fluctuation behavior, and dimensionality-dependent phase transitions (e.g., Kosterlitz–Thouless transitions mediated by topological defects). Examples include electrons in quantum wells or at interfaces, ultrathin films, and certain spin or lattice models defined on 2D lattices, which serve as fundamental platforms for studying critical phenomena, topological phases, and low-dimensional quantum many-body effects.
When materials are created on a nanometer scale—just a handful of atoms thick—even the thermal energy present at room temperature can cause structural ripples. How these ripples affect the mechanical properties of these ...
Nanophysics
Mar 27, 2025
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A RIKEN study shows that squeezing the right amount of potassium ions between the atomic layers of molybdenum disulfide can turn it from a semiconductor into a metal, superconductor or insulator. The same layered material ...
Nanophysics
Mar 27, 2025
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For decades, researchers have explored how electrons behave in quantum materials. Under certain conditions, electrons interact strongly with each other instead of moving independently, leading to exotic quantum states. One ...
Superconductivity
Mar 26, 2025
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The team led by Delphine Bouilly, a professor in UdeM's Physics Department and director of IRIC's Electronic Nanobiosensor Design and Application Research Unit, has developed an original technique for manipulating and moving ...
Nanomaterials
Mar 26, 2025
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A research team led by Professor Sun Qing-Feng in collaboration with Professor He Lin's research group from Beijing Normal University has achieved orbital hybridization in graphene-based artificial atoms for the first time.
Nanophysics
Mar 21, 2025
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Researchers from Pohang University of Science and Technology (POSTECH) and the University of Montpellier have successfully synthesized wafer-scale hexagonal boron nitride (hBN) exhibiting an AA-stacking configuration, a crystal ...
Nanophysics
Mar 20, 2025
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Scientists from the RIKEN Center for Emergent Matter Science (CEMS) and collaborators have discovered a new way to control superconductivity—an essential phenomenon for developing more energy-efficient technologies and ...
Superconductivity
Mar 20, 2025
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Thin film devices, composed of layers of materials a few nanometers thick, play an important role in various technologies, from semiconductors to communication technologies. For instance, graphene and hexagonal-boron nitride ...
Nanomaterials
Mar 19, 2025
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A group of Carnegie Mellon University researchers recently devised a method allowing them to create large amounts of a material required to make two-dimensional (2D) semiconductors with record high performance. Their paper, ...
Nanophysics
Mar 17, 2025
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By taking two flakes of special materials that are just one atom thick and twisting them at high angles, researchers at the University of Rochester have unlocked unique optical properties that could be used in quantum computers ...
Nanophysics
Mar 17, 2025
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