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.
In new research published in Nature, Weizmann Institute scientists introduce a powerful tool to explore quantum phenomena—the cryogenic Quantum Twisting Microscope (QTM).
Condensed Matter
Apr 23, 2025
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In a recent study, researchers made a significant observation of the Berezinskii-Kosterlitz-Thouless (BKT) phase transition in a 2D dipolar gas of ultracold atoms. This work marks a milestone in understanding how 2D superfluids ...
Soft Matter
Apr 17, 2025
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61
Researchers at Westlake University have disclosed a two-dimensional (2D) mechanically interlocked polymer (MIP) that mimics medieval chainmail at the molecular scale. This micrometer-scale 2D material exhibits exceptional ...
Nanomaterials
Apr 16, 2025
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53
Capturing carbon dioxide (CO2) from industrial emissions is crucial in the fight against climate change. But current methods, like chemical absorption, are expensive and energy-intensive. Scientists have long eyed graphene—an ...
Nanomaterials
Apr 11, 2025
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78
A research group from the Ningbo Institute of Materials Technology and Engineering (NIMTE) of the Chinese Academy of Sciences has proposed a new strategy to precisely manipulate interlayer stacking orders and related properties ...
Nanophysics
Apr 9, 2025
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From cell phones to solar panels to quantum computers, thin films are essential to current and emerging technologies. But making functional thin films requires control. During hours-long processes, thin films form atom by ...
Nanomaterials
Apr 2, 2025
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50
A research team, led by Professor Jimin Kwon from the Department of Electrical Engineering at UNIST, in collaboration with Professor Yong-Young Noh and his research team from the Department of Chemical Engineering at POSTECH, ...
Nanophysics
Mar 31, 2025
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52
Researchers have discovered an unexpected superconducting transition in extremely thin films of niobium diselenide (NbSe2). Publishing in Nature Communications, they found that when these films become thinner than six atomic ...
Superconductivity
Mar 31, 2025
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111
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 thin ...
Nanophysics
Mar 27, 2025
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32
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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