Compact Laser Ion Source With Orthogonal Ion Extraction
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Solution Overview
Problem
Traditional mass spectrometry for solid samples requires extensive sample preparation and the use of cumbersome, non-portable laser ion sources that are difficult to align, making in situ analysis challenging and costly.
Innovation Solution
A compact laser ion source with an orthogonal ion acceleration scheme and remote-controlled laser alignment using a motorized platform and high-definition camera, eliminating the need for mirrors and allowing for direct ionization and analysis without chemical dissolution, enabling a portable and easy-to-use system for in situ mass spectrometry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional laser ion sources are used for solid sample analysis, then ionization capability is achieved, but device complexity and alignment difficulty increase
Solution Approach 1:
The patent removes mirrors from the optical path, extracting the alignment-critical components from the system. The laser beam travels directly from the laser source through a window to the sample, eliminating the need for mirror alignment while maintaining ionization capability.
Solution Approach 2:
Instead of using the conventional approach where the laser beam is redirected through mirrors to reach the sample, the patent inverts the approach by having the laser beam travel directly to the sample through a simple window, reversing the traditional optical path design.
2Measurement precision
If extensive sample preparation is performed, then analysis accuracy is improved, but loss of time and productivity decrease
Solution Approach 1:
The laser ionization source directly ionizes solid samples in situ without requiring chemical dissolution or extensive preparation steps. The system performs self-service analysis by directly analyzing samples in their original state, eliminating time-consuming preparation procedures while maintaining analytical capability.
3Reliability
If chemical dissolution steps are used, then sample ionization is achieved, but loss of substance and waste generation increase
Solution Approach 1:
The patent replaces chemical dissolution methods with direct laser ionization. Instead of using chemical reagents to dissolve and prepare samples, the system uses laser energy to directly ionize solid samples, substituting a physical process for chemical processes and eliminating associated waste and sample loss.
4Ease of operation
If portable mass spectrometry is implemented, then ease of operation in field conditions is improved, but device complexity increases
Solution Approach 1:
The patent merges the laser source, ionization chamber, and mass analyzer into an integrated portable system. By combining these previously separate components into a single portable unit, the system achieves field-deployability while managing overall system complexity through integration.
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 solution simplifies sample preparation and ionization, reduces logistical and waste-related costs, and facilitates in-field analysis of solid samples with improved alignment and ion transfer efficiency, making mass spectrometry more accessible and efficient.
Implementation Method 1
a high power laser can be focused on a solid sample surface for simultaneous ablation and ionization of the solid sample
Implementation Method 2
a high power laser can be focused on a solid sample surface for simultaneous ablation and ionization of the solid sample
Implementation Method 3
an orthogonal ion acceleration scheme
Data Source
AI summary
An apparatus for and a method of analyzing a sample. A laser section may include a laser arranged to direct a laser beam in a first direction towards the sample. The laser beam ablating and ionizing at least a portion of the sample to generate ions. An ion source section may include a sample holder for holding the sample. At least one component is arranged to apply an electric field for extracting at least a portion of the ions to form an ion beam traveling in a second direction. A time-of-flight section may include a detector arranged to receive the ion beam.