• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>IEEE Control and System Graduate Research Colloquium >An AC Magnetometer using Automatic Frequency Switching of a Resonant Excitation Coil for Magnetic Nanoparticles Characterization
【24h】

An AC Magnetometer using Automatic Frequency Switching of a Resonant Excitation Coil for Magnetic Nanoparticles Characterization

机译：使用共振线圈自动频率切换的交流磁强计用于磁性纳米粒子表征

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An AC magnetometer using a resonant excitation coil is presented for magnetic nanoparticles characterization. An automatic resonant frequency switching of the excitation coil circuit is developed to reduce the measurement time and human contributed errors. A network capacitor consists of 13 different capacitance values is fabricated and controlled by using a relay module and a microcontroller. The resonant circuit of the excitation coil is resonated up to 81.36 kHz to reduce its impedance observed by a current amplifier. The impedance of the resonant excitation coil is evaluated to access the effectiveness of the resonant technique. A first-order differential coil is used to sense the magnetization from a sample and its sensitivity with respect to magnetic moment and frequency is measured. Using the developed system, we measure the complex magnetization of a multi-core iron oxide nanoparticles solution and estimated its hydrodynamic size.
机译：提出了一种使用共振激励线圈的交流磁力计，用于磁性纳米粒子的表征。开发了励磁线圈电路的自动谐振频率切换，以减少测量时间和人为误差。通过使用继电器模块和微控制器，可以制造和控制由13种不同电容值组成的网络电容器。励磁线圈的谐振电路谐振至81.36 kHz，以减小电流放大器观察到的阻抗。评估谐振励磁线圈的阻抗以获取谐振技术的有效性。一阶差分线圈用于感测样品的磁化强度，并测量其相对于磁矩和频率的灵敏度。使用开发的系统，我们测量了多核氧化铁纳米粒子溶液的复杂磁化强度，并估计了其流体动力学尺寸。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号