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関連する概念動画

Thermometers and Temperature Scales01:22

Thermometers and Temperature Scales

7.6K
Any physical property that depends consistently and reproducibly on temperature can be used as the basis of a thermometer. For example, volume increases with temperature for most substances. This property is the basis for the common alcohol thermometer and the original mercury thermometers. Other properties used to measure temperature include electrical resistance, color, and the emission of infrared radiation.
As many physical properties depend on temperature, the variety of thermometers is...
7.6K
Electron Configuration of Multielectron Atoms03:26

Electron Configuration of Multielectron Atoms

65.0K
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...
65.0K
Electronic Structure of Atoms02:28

Electronic Structure of Atoms

28.7K

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...
28.7K
Atomic Structure01:33

Atomic Structure

209.6K
Overview
209.6K
Atomic Spectroscopy: Effects of Temperature01:27

Atomic Spectroscopy: Effects of Temperature

908
Atomization, converting samples into gas-phase atoms and ions, is essential for atomic spectroscopy. The flame temperature required for atomization affects the efficiency of the atomic spectroscopic methods by increasing the atomization efficiency and the relative population of the excited and ground states.
At thermal equilibrium, the relative populations of excited and ground state atoms can be estimated using the Maxwell–Boltzmann distribution. For example, an increase in temperature...
908
The Energies of Atomic Orbitals03:21

The Energies of Atomic Orbitals

30.2K
In an atom, the negatively charged electrons are attracted to the positively charged nucleus. In a multielectron atom, electron-electron repulsions are also observed. The attractive and repulsive forces are dependent on the distance between the particles, as well as the sign and magnitude of the charges on the individual particles. When the charges on the particles are opposite, they attract each other. If both particles have the same charge, they repel each other.
30.2K

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Updated: Feb 4, 2026

Picometer-Precision Atomic Position Tracking through Electron Microscopy
15:04

Picometer-Precision Atomic Position Tracking through Electron Microscopy

Published on: July 3, 2021

8.4K

原子スケールの交差点における温度差による電子ノイズ

Ofir Shein Lumbroso1, Lena Simine2,3, Abraham Nitzan4,5

  • 1Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot, Israel.

Nature
|October 12, 2018
PubMed
まとめ
この要約は機械生成です。

研究者は新しい電子ノイズを発見しました

さらに関連する動画

On-Chip Crystallization and Large-Scale Serial Diffraction at Room Temperature
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On-Chip Crystallization and Large-Scale Serial Diffraction at Room Temperature

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Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
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Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model

Published on: May 23, 2018

12.5K

関連する実験動画

Last Updated: Feb 4, 2026

Picometer-Precision Atomic Position Tracking through Electron Microscopy
15:04

Picometer-Precision Atomic Position Tracking through Electron Microscopy

Published on: July 3, 2021

8.4K
On-Chip Crystallization and Large-Scale Serial Diffraction at Room Temperature
07:42

On-Chip Crystallization and Large-Scale Serial Diffraction at Room Temperature

Published on: March 11, 2022

2.3K
Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
11:10

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Published on: May 23, 2018

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科学分野:

  • 凝縮物質物理学
  • ナノテクノロジー
  • 量子電子

背景:

  • 電子的な熱ノイズとショットノイズは根本的なものです.
  • これらのノイズタイプは量子研究には不可欠ですが,信号検出には問題です.
  • ショットノイズは通常,電圧で活性化されます.

研究 の 目的:

  • 新しい電子ノイズの発見と特徴を報告する
  • その起源を調査し,既存のノイズタイプと区別する.
  • ナノスケールの熱輸送と電子機器の潜在的応用を探求する.

主な方法:

  • 原子と分子結合の実験的な測定
  • ランダウアー形式主義を用いた理論的分析
  • 音源とアクティベーションの特徴を区別する.

主要な成果:

  • 温度差によって発生する新しいノイズ"デルタTノイズ"が実証されました.
  • デルタTノイズは熱によって発生するが,非均衡条件が必要である.
  • 確認されたデルタTノイズは,熱と電圧で活性化されたショットノイズとは異なる.
  • デルタ-Tノイズと標準ショットノイズとの間で共有されたパーティションの起源を特定しました.

結論:

  • ナノスケールの導体内の温度グラデーションを検出するための新しい方法を提供します.
  • 熱ノイズと組み合わせると ナノスケールの熱伝送研究が容易になります
  • デルタTノイズの理解は 効率的な量子限界ナノスケール電子の設計に不可欠です