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相关概念视频

Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals01:17

Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals

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Ideally, an unpaired electron shows a single peak in the EPR spectrum due to the transition between the two spin energy states. However, coupling interactions can occur between the spins of the unpaired electron and any neighboring spin-active nuclei. This hyperfine coupling results in hyperfine splitting, where the EPR signal is split into multiplets. The signals split into 2nI + 1 peaks, where n is the number of equivalent nuclei and I is the nuclear spin. These splitting patterns provide...
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Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

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A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
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NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

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A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.
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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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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....
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NMR Spectrometers: Overview01:20

NMR Spectrometers: Overview

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NMR spectrometers consist of a strong magnet, a radiofrequency transmitter, and a detector attached to a computer console for recording spectra of samples containing NMR-active nuclei. In first-generation NMR instruments called continuous-wave spectrometers, the resonance frequencies of the nuclei are determined by frequency-sweep or field-sweep methods. The magnetic field strength is fixed and the rf signal is swept in the former, while the radiofrequency signal is fixed and the magnetic field...
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Molecular Spectroscopy: Absorption and Emission01:14

Molecular Spectroscopy: Absorption and Emission

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Molecules possess discrete energy levels called quantum states. Unlike atoms, which have simpler energy levels, molecules possess additional rotational and vibrational energy levels.  Each energy level is separated by an energy gap, with the gaps between adjacent electronic, vibrational, and rotational levels varying significantly. The three types of energy levels in a diatomic molecule are shown in Figure 1.
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相关实验视频

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Site Directed Spin Labeling and EPR Spectroscopic Studies of Pentameric Ligand-Gated Ion Channels
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MEPROS - 模块化电子磁共振操作软件用于多功能高频EPR光谱仪.

Matúš Šedivý1, Vinicius Santana2, Antonín Sojka2

  • 1Magneto-Optical and THz Spectroscopy, Central European Institute of Technology (CEITEC), Brno University of Technology (BUT), Czech Republic; Department of Microelectronics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Czech Republic.

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|September 26, 2023
PubMed
概括

一个新的LabVIEW软件控制了一种自制的高频电子偏磁共振 (HF-EPR) 谱仪. 这种多功能解决方案可实现先进的EPR测量,如CW-EPR,FS-EPR和2D-EPR映射用于材料研究.

关键词:
自动化 自动化 自动化电子的偏磁共振是一种超磁共振.仪器化 仪器化 仪器化实验室查看 实验室查看软件 软件 软件 软件 软件齐曼图表 齐曼图表

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科学领域:

  • 频谱学是一种光谱学.
  • 材料科学 材料科学 材料科学
  • 软件工程 软件工程 软件工程

背景情况:

  • 自制光谱仪需要定制的控制软件.
  • 高频电子磁共振 (HF-EPR) 为材料特性提供了独特的见解.
  • 开发适应性软件对于不断变化的实验需求至关重要.

研究的目的:

  • 介绍一个模块化的LabVIEW软件解决方案,用于控制自制HF-EPR光谱仪.
  • 实施多功能测量程序,包括连续波EPR (CW-EPR),频率扫描EPR (FS-EPR) 和2D-EPR映射.
  • 为了证明软件的自动化能力和适应性,用于各种实验设置.

主要方法:

  • 在LabVIEW中开发模块化软件架构.
  • 对光谱仪子系统的控制协议的实施.
  • 集成用于CW-EPR,FS-EPR和2D-EPR映射的测量程序.

主要成果:

  • 成功实现了CW-EPR,FS-EPR和2D-EPR测量的自动化.
  • 在不同条件下获取碳酸 (SiC + V) 化的EPR光谱.
  • 通过2D-EPR映射获得密集的FS-EPR数据,用于甲酸晶体和多频谱.

结论:

  • 开发的LabVIEW软件为HF-EPR光谱学提供了灵活和自动化的解决方案.
  • 模块化设计使其易于适应硬件修改,并可在其他实验设置中重复使用.
  • 该软件在研究中积极使用,为发表的科学数据做出了贡献.