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相关概念视频

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle01:19

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle

550
Inductively coupled plasma (ICP) is the most widely used plasma source in atomic emission spectroscopy (AES), also known as Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The ICP source, or torch, consists of three concentric quartz tubes with argon gas flowing through them. A spark from a Tesla coil initiates the ionization of argon, generating a high-temperature plasma.
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
550
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

199
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
199
Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview01:19

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview

662
In inductively coupled plasma–mass spectrometry (ICP–MS), an inductively coupled plasma (ICP) torch is used as an atomizer and ionizer. Solid samples are dissolved and volatilized before being introduced into the high-temperature argon plasma, while solution samples are nebulized and passed through the high-temperature argon plasma. Plasma dissociates the analytes and ionizes their component atoms to form a mixture of positive ions and molecular species. The positive ions are then...
662
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

151
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
151
Mass Analyzers: Common Types01:19

Mass Analyzers: Common Types

579
The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...
579

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Updated: Jun 13, 2025

Label-Free Identification of Lymphocyte Subtypes Using Three-Dimensional Quantitative Phase Imaging and Machine Learning
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在二维复杂等离子体中使用机器学习观察六度相.

Xin-Chi Du1, Wei Yang1,2, Volodymyr Nosenko3

  • 1College of Physics, Donghua University, Shanghai 201620, People's Republic of China. weiyang@dhu.edu.cn.

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机器学习成功地识别了复杂的等离子体融过渡中的六次性阶段. 本研究分析了模拟和实验中融过程中的拓缺陷演变.

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科学领域:

  • 物理 物理学 物理
  • 软物质物理学 软物质物理学
  • 等离子体物理学的物理学

背景情况:

  • 复杂等离子体是有充电微粒的电离气体,表现出软物质的特性.
  • 了解复杂等离子体中的相变对于材料科学至关重要.

研究的目的:

  • 用机器学习研究二维复杂等离子体中的融化过渡.
  • 为了确定六度阶段,并研究融过程中的拓缺陷演变.

主要方法:

  • 机器学习的应用,特别是卷积神经网络.
  • 用复杂等离子体的数值模拟数据训练神经网络.
  • 模拟和实验数据的分析.

主要成果:

  • 在复杂的等离子体中成功识别了六合相.
  • 在融化过渡期间拓缺陷演变的详细研究.
  • 在数值模拟和实验观测中验证发现.

结论:

  • 机器学习对于分析复杂等离子体中的相位过渡是有效的.
  • 这项研究提供了关于融过程中拓缺陷的动态的见解.
  • 这项研究将复杂等离子体研究中的模拟和实验方法相结合.