Pneumatic Nebulizer for Uniform Matrix Layer Deposition
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Solution Overview
Problem
Current techniques for forming a matrix layer in mass spectrometry, such as electrospray, inkjet printing, airbrushing, and dry coating, face challenges including long processing times, clogging issues, limited compatibility with solvents, and difficulty in achieving uniformity and reproducibility, particularly in producing a sufficient coating for ion desorption and signal intensity.
Innovation Solution
A spraying system comprising a liquid delivery system, a gas delivery system, a nebulizer, and a control system that directs a nebulized liquid matrix layer onto a sample, allowing for rapid and uniform deposition of a matrix layer across large areas in a short time, compatible with various solvents, and capable of processing multiple samples simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If electrospray is used to produce very small droplets, then droplet size is improved, but processing time becomes very long and high voltage is required
Solution Approach 1:
The patent uses pneumatic nebulization where compressed gas (nitrogen or air) is passed through a liquid matrix solution to generate fine droplets. This hydraulic-pneumatic approach replaces the electrospray method, achieving rapid droplet formation without requiring high voltage and significantly reducing processing time from minutes to seconds.
2Manufacturing precision
If inkjet printing is used for coating, then coating capability is achieved, but processing time is long and clogging occurs
Solution Approach 1:
The system employs pneumatic nebulization where gas flow through a liquid creates a mist of droplets that are deposited onto the sample. This continuous pneumatic process eliminates the mechanical moving parts and nozzles of inkjet systems, preventing clogging while achieving rapid, uniform coating in seconds rather than minutes.
3Manufacturing precision
If airbrushing is used to form matrix layer, then coating is achieved, but uniformity and reproducibility are difficult to control
Solution Approach 1:
The pneumatic nebulizer system uses controlled gas flow rates and liquid flow rates through precisely engineered nozzle geometries to produce uniform droplet sizes and consistent deposition patterns. The system incorporates flow controllers and temperature control to maintain reproducibility, eliminating the manual control issues of airbrushing while achieving superior uniformity.
4Manufacturing precision
If dry coating is used to deposit matrix powder, then coating is achieved, but reproducibility is problematic and matrix incorporation is minimal
Solution Approach 1:
The system uses pneumatic nebulization to deliver liquid matrix solution that forms uniform droplets on the sample surface. The liquid state ensures proper matrix incorporation into the tissue, while controlled gas and liquid flow rates through precision nozzles guarantee reproducible coating results, overcoming the limitations of dry powder deposition.
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 system enables the rapid formation of a uniform matrix layer on samples in less than 20 seconds, improving the efficiency and reproducibility of mass spectrometry analysis by enhancing ion desorption and signal intensity, while being compatible with a wide range of solvents and suitable for large area coatings.
Implementation Method 1
a gas system for providing a gas to the nebulizer, wherein the nebulizer is configured to produce a nebulized liquid
Implementation Method 2
a gas system for providing a gas to the nebulizer, wherein the nebulizer is configured to produce a nebulized liquid
Data Source
AI summary
Embodiments of the present disclosure provide for spraying systems, methods of disposing a layer of matrix onto a sample, and the like.