Magnetic induction current signal generation and detection device
A technology of current signal and detection device, applied in the field of electrical signals, can solve problems such as interference and difficulty in extracting signals, and achieve the effects of eliminating interference, convenient operation and adjustment, and simple structure
Active Publication Date: 2021-12-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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However, some of these materials also have terahertz emissions themselves, which will cause certain interference. Therefore, it is very difficult to extract signals related to the magnetic field. Relevant terahertz signals (the terahertz signals here are actually another form of photocurrent), photocurrent and other current-related signals to meet the corresponding needs
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[0027] Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. In each of the drawings, the same components are expressed by the same or similar reference numerals. For the sake of clarity, the various parts in the drawings are not drawn.
[0028] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0029] figure 1 The present invention shows a schematic structure of a magnetic induction current signal generation and detection means according to the embodiment; eg figure 1 Shown, the magnetic induction and the current detection signal generating means comprising: a stage 110, the magnet 120, and a driving unit 130 connected to frame 140. Wherein, for example, the magnet 120 comprises two oppositely disposed oppositely disposed two magnets 120 form a magnetic field B, the stage 110 is located between the two magnets 130, the stage 110 may be placed, for example, a material associated with the magnetic field; m...
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The invention discloses a magnetic induction current signal generation and detection device. The device comprises a magnetic field generation unit which is used for generating a magnetic field, an objective table which is positioned in the magnetic field and is used for bearing a to-be-detected sample, a driving unit which is fixedly connected with the magnetic field generation unit through a connecting frame and used for driving the magnetic field generation unit to rotate so as to generate a rotating magnetic field, and a detection unit which is used for detecting a current signal generated by the to-be-detected sample. The objective table is static relative to the magnetic field generation unit, a to-be-detected sample on the objective table generates a corresponding current signal under the action of the rotating magnetic field, and the detection unit acquires the current signal.
Description
Technical field [0001] The present invention relates to electrical signals, and more particularly, to a magnetic induction current signal generation and detection means. Background technique [0002] Is the frequency in the terahertz wave 0.1-10THz, 0.4-40meV energy range of electromagnetic waves, i.e., the wavelength at 30-3000m, wavenumber 3.3-330cm -1 Between the electromagnetic spectrum, the band is in the sub-millimeter and far infrared band between the microwave and infrared, resistant to techniques commonly employed in adjacent bands. Terahertz waves has many unique properties, components of biological, medical and chemical research can be used for analysis. [0003] Currently, the terahertz wave can be generated There are many methods, mainly produced by the optical and photoconductive antenna rectification manner, the former is mainly produced by the ultrashort laser action on the photoconductive material of the electron - hole pairs, resulting in the material surface tr...
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IPC IPC(8): G01R33/032
CPCG01R33/032
Inventor 齐静波高羽
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA