相关实验视频

Updated: Jun 2, 2025

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
07:01

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples

Published on: June 9, 2016

9.6K

在磁感应通信中用于双模式索引调制辅助的OFDM的高安全物理层加密方案

Jiyuan Wang, Bo Liu, Jianxin Ren

    Optics letters
    |January 16, 2025
    PubMed
    概括

    本研究介绍了一种用于磁感应通信的安全加密方案,使用双模式直角频率分割复杂化与索引调制 (DM-OFDM-IM). 拟议的方法提高了光谱效率和通信距离,同时确保了具有大钥匙空间的强大的物理层安全性.

    更多相关视频

    Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement09:43

    Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement

    Published on: November 7, 2017

    9.4K
    Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains07:42

    Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

    Published on: July 20, 2022

    2.6K

    相关概念视频

    MOSFET: Enhancement Mode01:22

    MOSFET: Enhancement Mode

    Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
    In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
    282
    Electromagnetic Fields01:30

    Electromagnetic Fields

    Electric fields generated by static charges, often referred to as electrostatic fields, are characteristically different from electric fields created by time-varying magnetic fields. While the former is a conservative field, implying that no net work is done on a test charge if it goes around in a complete loop in the field, the latter is, by definition, not a conservative field; net work is done, and it is proportional to the rate of change of magnetic flux.
    However, the observation of...
    2.1K
    π Electron Effects on Chemical Shift: Overview01:27

    π Electron Effects on Chemical Shift: Overview

    An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
    1.0K
    Magnetic Field Of A Current Loop01:16

    Magnetic Field Of A Current Loop

    Consider a circular loop with a radius a, that carries a current I. The magnetic field due to the current at an arbitrary point P along the axis of the loop can be calculated using the Biot-Savart law.
    4.4K
    Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)01:15

    Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

    Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
    230
    Intensity Of Electromagnetic Waves01:22

    Intensity Of Electromagnetic Waves

    The energy transport per unit area per unit time, or the Poynting vector, gives the energy flux of an electromagnetic wave at any specific time. For a plane electromagnetic wave with E0 and B0 as the peak electric and magnetic fields and traveling along the x-axis, the time-varying energy flux can be given by the following equation:
    4.4K