Synchronized LC Oscillator Transceiver for Near-Field Spin Detection
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Solution Overview
Problem
Current ESR and NMR devices face challenges in achieving high spin sensitivity and concentration sensitivity while being energy-efficient and cost-effective, with excessive miniaturization leading to loss of concentration sensitivity and high energy consumption.
Innovation Solution
The device employs an arrangement of LC oscillators that function as both transmitting and receiving devices, with frequency synchronization and a near-field design to enhance spin sensitivity and concentration sensitivity, and uses a simplified design to reduce energy consumption and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the device is excessively miniaturized to improve spin sensitivity, then spin sensitivity is improved, but concentration sensitivity is lost
Solution Approach 1:
The device segments the detection function into two distinct oscillator types: LC oscillators for detecting transient magnetization (high spin sensitivity) and resonant oscillators for detecting concentration. This segmentation allows each oscillator type to be optimized for its specific function without compromise.
Solution Approach 2:
The device employs oscillators that can serve multiple functions: the same oscillator array can detect both transient magnetization and concentration depending on which detection mode is activated, making the system universally applicable to different measurement requirements.
2Measurement precision
If conventional ESR and NMR devices are used to achieve high spin sensitivity and concentration sensitivity, then measurement capability is improved, but energy consumption increases
Solution Approach 1:
The oscillators detect magnetization changes through self-service mechanisms: the sample's magnetization directly modulates the oscillator frequency without requiring external detection electronics, reducing energy consumption while maintaining sensitivity.
3Measurement precision
If conventional ESR and NMR devices are used to achieve high spin sensitivity and concentration sensitivity, then measurement capability is improved, but device complexity and cost increase
Solution Approach 1:
The same oscillator array serves dual purposes: detecting both transient magnetization and concentration, eliminating the need for separate detection systems and reducing overall device complexity and cost.
Solution Approach 2:
The device merges the transmitting and receiving functions into a single integrated system where the oscillators both generate the excitation field and detect the response, simplifying the device architecture.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device achieves high spin sensitivity and concentration sensitivity, enabling efficient detection of magnetic resonance with improved time resolution and reduced energy consumption, suitable for both continuous wave and transient magnetization measurements.
Implementation Method 1
An arrangement of LC oscillators 104 creates an additional magnetic field B1
Implementation Method 2
a statically homogeneous, statically inhomogeneous or dynamic (pulsed inhomogeneous) magnetic field, usually as B0
Implementation Method 3
Through the coupling of alternating fields (B1) suitable frequency and polarization, transitions between the energy levels of discrete spin states
Implementation Method 4
with frequency synchronization and a near-field design to enhance spin sensitivity and concentration sensitivity
Data Source
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AI summary
The invention relates to a device for generating and detecting a magnetization of a sample (103). The device at least comprises means (101) for providing a static magnetic field (102) of a predetermined direction and with a predetermined intensity at a sample location, a transmission device (104) for providing an additional magnetic field at the sample location and a receiving device (104) for detecting the magnetization of the sample (103). According to the invention, an assembly of at least two LC oscillators (104), the oscillation frequency of which being dependent on the value of an inductive element of the LC oscillators and which are frequency-synchronized by interconnection, can be used both as a transmission device (104) and as a receiving device (104) and also simultaneously as a transceiver (104). Means are connected for controlling the assembly (104), the assembly and control means (104) being sufficient to generate a magnetic field which is capable of deflecting a magnetization of the sample (103) out of equilibrium, and the sample location is situated in the near field of the assembly (104). In order to process an output voltage (105) of the assembly (104), demodulation means (106), analog to digital converters and means for digital data processing (107) are connected downstream of the device in a predetermined order. Provided on the means for digital data processing (107) are: means for determining the magnetization of the sample and the spin concentration of individual spectral components to be determined from said magnetization; and means for outputting said magnetization.