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相关概念视频

Electronic Structure of Atoms02:28

Electronic Structure of Atoms

28.1K

An atom comprises protons and neutrons, which are contained inside the dense, central core called the nucleus, with electrons present around the nucleus. Taking into account the wave–particle duality of electrons and the uncertainty in position around the nucleus, quantum mechanics provides a more accurate model for the atomic structure. It describes atomic orbitals as the regions around the nucleus where electrons of discrete energy exist, characterized by four quantum...
28.1K
The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

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Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
56.7K
Electron Configuration of Multielectron Atoms03:26

Electron Configuration of Multielectron Atoms

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The alkali metal sodium (atomic number 11) has one more electron than the neon atom. This electron must go into the lowest-energy subshell available, the 3s orbital, giving a 1s22s22p63s1 configuration. The electrons occupying the outermost shell orbital(s) (highest value of n) are called valence electrons, and those occupying the inner shell orbitals are called core electrons. Since the core electron shells correspond to noble gas electron configurations, we can abbreviate electron...
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Electron Affinity03:07

Electron Affinity

43.1K
The electron affinity (EA) is the energy change for adding an electron to a gaseous atom to form an anion (negative ion).
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Atomic Structure01:33

Atomic Structure

207.3K
Overview
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Electron Carriers01:24

Electron Carriers

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Electron carriers can be thought of as electron shuttles. These compounds can easily accept electrons (i.e., be reduced) or lose them (i.e., be oxidized). They play an essential role in energy production because cellular respiration is contingent on the flow of electrons.
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
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相关实验视频

Updated: Jan 22, 2026

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

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超越催化,金属单个原子作为可编程电子结构和自适应电子的量子调节器.

Jiachen Sun1, Tong Zhou2, Linhe Yu1

  • 1Institute of Optoelectronics, Fudan University, Shanghai, P. R. China.

Advanced materials (Deerfield Beach, Fla.)
|January 21, 2026
PubMed
概括
此摘要是机器生成的。

通过原子工程设计的单个原子精确地重新配置二维材料的电子结构,从而实现可调节的电特性和灵活的电磁开关. 这种频段调制策略为先进的量子设备和可重新配置的电子产品打开了新的可能性.

关键词:
电磁开关是一个电磁开关.功能性的纳米设备.量子调节器是一种量子调节器.基于单原子的频带工程.可以调节电压的材料.

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相关实验视频

Last Updated: Jan 22, 2026

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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科学领域:

  • 材料科学 材料科学 材料科学
  • 凝聚物质物理学 凝聚物质物理学
  • 纳米技术纳米技术

背景情况:

  • 基板上的单金属原子通过局部相互作用表现出催化活性.
  • 单个原子修改基质电子结构超出内在限制的潜力尚未得到充分探索.

研究的目的:

  • 在2D框架上使用单个原子开发一个原子工程带调制策略.
  • 探索基板电子结构的重新配置,并诱导异常量子效应.

主要方法:

  • 在2D框架 (MXenes,石墨烯,g-C3N4,MoS2) 上固定d系列 (Fe,Co,Ni,Cu) 和p系列 (In,Sn,Sb,Te) 原子.
  • 利用原子作为量子调节器来重新配置基质结构,并诱导带逆转和范霍夫奇点等现象.

主要成果:

  • 通过原子调制实现了带反向,平面化和范霍夫奇点.
  • 证明了电气行为的线性,电压驱动的调整,增强介电电容率 (几十倍).
  • 在低偏差 (<1.0 V) 时观察到从半导体到导电状态的动态过渡.
  • 开发了一种灵活的电磁开关,可编程控制信号传输,吸收和微观尺度厚度 (~600μm) 的反射.

结论:

  • 原子工程带调制策略为新型电子和量子设备提供了一个多功能平台.
  • 这种方法能够在纳米尺度上对电磁性质进行前所未有的动态控制.
  • 这些发现为可重新配置的电子和先进的量子设备应用铺平了道路.