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相关概念视频

Atomic Force Microscopy01:08

Atomic Force Microscopy

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Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
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Mass Analyzers: Common Types01:19

Mass Analyzers: Common Types

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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...
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Mass Analyzers: Overview01:13

Mass Analyzers: Overview

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The mass analyzer is a crucial component of the mass spectrometer. In the ionization chamber, the vaporized sample is bombarded with a high-energy electron beam to generate a radical cation and further fragment into neutral molecules, radicals, and cations. A series of negatively charged accelerator plates accelerate the cations into the mass analyzer. The mass analyzer separates ions according to their mass-to-charge (m/z) ratios and then directs them to the detector. The common types of mass...
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相关实验视频

Updated: May 31, 2025

Implementation of a Reference Interferometer for Nanodetection
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基于高分辨率双原子干涉度的小型惯性传感器.

Si-Bin Lu1, Jia-Hao Fu1,2, Min Jiang1

  • 1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China.

The Review of scientific instruments
|January 23, 2025
PubMed
概括
此摘要是机器生成的。

一个新的微型惯性传感器使用双原子干扰计来进行高分辨率的加速和旋转测量. 这种紧的传感器克服了高级惯性导航应用的尺寸灵敏性权衡.

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相关实验视频

Last Updated: May 31, 2025

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Picometer-Precision Atomic Position Tracking through Electron Microscopy
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科学领域:

  • 物理 物理学 物理
  • 量子传感器是一种量子传感器.
  • 惯性导航 惯性导航 惯性导航

背景情况:

  • 原子干扰度为惯性测量提供了高灵敏度,但由于尺寸限制,在现场应用中面临挑战.
  • 现有的传感器在灵敏度和物理尺寸之间的权衡中扎,限制了它们在惯性导航中的使用.

研究的目的:

  • 开发一台小型惯性传感器,能够同时以高分辨率测量加速和旋转.
  • 为满足在惯性导航系统中对紧,高性能传感器的需求.

主要方法:

  • 使用了集成到一个紧的传感器头 (100L体积) 的高分辨率双原子干扰仪.
  • 使用带有环氧树脂的粘合石英玻璃窗制造的真空室.
  • 开发了一种温度补偿方法,并使用波向量逆转来缓解相位漂移.

主要成果:

  • 实现了29%的对比度的双原子干扰边缘.
  • 通过提取相位变化,证明了同时测量加速和旋转.
  • 获得的测量分辨率为加速时40 ng,旋转时6.1 nrad/s.

结论:

  • 开发的小型双原子干扰仪传感器成功地以高分辨率同时测量加速和旋转.
  • 传感器设计和补偿方法克服了以前的局限性,为先进的惯性导航铺平了道路.