Multi-channel FAIMS Apparatus for Simultaneous Ion Detection
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Solution Overview
Problem
Conventional High-Field Asymmetric Waveform Ion Mobility Spectrometry (FAIMS) devices are limited to sequential detection of ion species, failing to provide simultaneous analysis and detection of multiple ion species, which reduces instrument efficiency and sensitivity, especially in applications requiring real-time monitoring of multiple ions.
Innovation Solution
A multi-channel FAIMS apparatus with a hollow electrode and parallel plate electrodes forming multiple ion channels, allowing for the application of an asymmetric high-voltage waveform and independently adjustable compensation voltages to each plate electrode, enabling simultaneous detection of multiple ion species without scanning the compensation voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional single-channel FAIMS device is used, then the device complexity is low, but the productivity is limited to sequential detection of ion species
Solution Approach 1:
The analyzer is divided into multiple independent ion channels (first ion channel, second ion channel, etc.), each capable of detecting different ion species simultaneously. This segmentation allows parallel detection, transforming sequential detection into simultaneous multi-species detection and thereby significantly improving productivity.
2Measurement precision
If multiple ion channels are implemented, then the sensitivity and analysis speed improve, but the device complexity increases
Solution Approach 1:
Multiple ion channels share common functional components including the ion source, asymmetric waveform generator, and detection system. Each channel is equipped with independent compensation voltage controls to maintain individual detection capabilities. This multi-functionality approach enables simultaneous detection of multiple ion species while reducing overall device complexity through component sharing.
3Ease of operation
If sequential detection is used, then the device operation is simple, but the loss of time increases due to inability to detect multiple species simultaneously
Solution Approach 1:
Multiple ion channels operate simultaneously and continuously, detecting different ion species in parallel rather than sequentially. This continuous parallel operation eliminates the time loss associated with switching between detection modes, allowing all ion species to be detected at the same time while maintaining operational simplicity through standardized channel design.
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
This approach enables real-time, simultaneous detection of multiple ion species, increasing analysis speed and sensitivity, reducing ion discrimination, and facilitating efficient use of samples, particularly in applications like gas or liquid chromatography and environmental monitoring.
Implementation Method 1
applying a high voltage asymmetric waveform to the hollow electrode to generate a field in the plurality of channels
Implementation Method 2
The velocity is compound dependent, permitting the separation of ion species from each other. The ions drift toward one of the plates as they travel in the electric field.
Implementation Method 3
Typically this drift may be stopped by applying a small DC voltage known as a compensation voltage (CV) which allows an ion specie of a selected mobility to pass through the field region to a detector.
Data Source
AI summary
A multi-channel high field asymmetric waveform ion mobility spectrometer (FAIMS) is provided. The apparatus provides for substantially simultaneous FAIMS analysis of plurality of ions from a single sample. The apparatus has a analyzer region comprising a hollow electrode, a plurality of plate electrodes positioned parallel to and distanced from the hollow electrode, a contact for applying an high voltage asymmetric waveform to the hollow electrode and a plurality of contacts for applying a compensation voltage to the plurality of plate electrodes. A method for substantially simultaneous FAIMS analysis of plurality of ions from a single sample is also provided.