Quantum dots are nanoscale semiconductor physical systems in which charge carriers are confined in all three spatial dimensions, leading to discrete, atom-like energy levels and size-tunable optical and electronic properties. Their behavior is governed by quantum confinement, Coulomb interactions, and surface states, and is typically modeled using effective-mass, k·p, or tight-binding approaches. Quantum dots can be formed via colloidal synthesis, epitaxial self-assembly, or lithographic patterning, and exhibit phenomena such as single-photon emission, fluorescence intermittency, and Coulomb blockade. They serve as platforms for investigating coherent control, exciton dynamics, spin qubits, and engineered light–matter interactions in optoelectronic and quantum information devices.
Plastic pollution is one of the most urgent environmental challenges of the 21st century. As larger plastic debris breaks down through mechanical, photochemical and biological processes, it forms microplastics that have been ...
Nanomaterials
Aug 27, 2026
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Quantum dots are semiconductor crystals only a few nanometers in size. Their ability to produce bright, precisely tunable colors has made them promising materials for light-emitting diodes, displays, solar cells and other ...
Nanophysics
Aug 21, 2026
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Recent technological advances have enabled the development of increasingly sophisticated, sharper displays for electronic devices. Many modern displays use light-emitting diodes, or LEDs, tiny semiconductor-based components ...
Scientists at Los Alamos National Laboratory have demonstrated a new quantum-dot mechanism that could significantly expand the reach of light-driven chemistry. By introducing magnetic manganese dopants into semiconductor ...
Nanophysics
Aug 4, 2026
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Semiconductor spin qubits are one of the most promising building blocks for future quantum computers, but turning them into a working, large-scale quantum computer has so far proven difficult. For now, two big questions remain ...
Large-scale quantum communication networks require both reliable quantum memories and coherent single-photon sources that can exchange quantum information efficiently. A coherent source of single photons with narrow linewidth, ...
Optics & Photonics
Jul 30, 2026
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Photographs can reveal things that are otherwise impossible for the naked eye to see, be they distant galaxies or microscopic cells. Researchers at Osaka Metropolitan University have developed a practical and versatile imaging ...
Nanophysics
Jul 24, 2026
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A technology has been developed that allows artificial intelligence to inversely determine the process conditions for quantum-dot light-emitting diode (QLED) devices—conditions that previously required extensive trial and ...
Optics & Photonics
Jul 18, 2026
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Nanocrystals are so useful that they formed the basis of the 2023 Nobel Prize in Chemistry. But despite their usefulness, scientists have so far been able to make these microscopic crystals from only a limited palette of ...
Nanomaterials
Jul 16, 2026
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Nanocrystals are already used in millions of devices, including televisions, laptops and displays, and are considered key materials for the next generation of quantum, sensing and solar technologies. However, they have not ...
Nanomaterials
Jul 12, 2026
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