Absorbent Mask Layout for Droplet Liquid Separation
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Solution Overview
Problem
Existing methods fail to effectively separate liquid from sedimented material in droplets on a flat substrate without removing the sedimented material, which is crucial for further processing in spectroscopic or mass spectrometric analysis.
Innovation Solution
A mask with a pattern of indentations or holes is positioned above the substrate to allow liquid to be drawn off from the droplets while keeping the sedimented material intact, utilizing capillary forces for efficient liquid removal without disturbing the sedimented material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If an absorbent cloth is brought into contact with droplets to separate liquid from sedimented material, then liquid can be drawn off, but sedimented material may be removed together with the liquid
Solution Approach 1:
The mask is segmented into multiple indentations or holes corresponding to individual droplet positions, allowing selective liquid removal from each droplet while leaving the sedimented material at the droplet center intact. This segmentation enables precise control over the separation process for multiple droplets simultaneously.
Solution Approach 2:
The mask structure provides different local qualities: the edges of indentations or holes contact peripheral parts of droplets for liquid absorption, while the center regions remain untouched to preserve sedimented material. This local differentiation ensures selective liquid removal without disturbing the sediment.
2Productivity
If liquid is drawn off from multiple droplets simultaneously, then processing efficiency increases, but cross-contamination between droplets may occur
Solution Approach 1:
The mask features individually separated indentations or holes for each droplet position, physically isolating the liquid absorption zones. This segmentation prevents liquid from one droplet from contacting adjacent droplets, eliminating cross-contamination while enabling simultaneous processing of multiple droplets.
3Quantity of substance
If the mask is positioned close to the substrate for effective liquid absorption, then liquid removal efficiency increases, but sedimented material may be disturbed
Solution Approach 1:
The mask design creates localized contact zones at the edges of indentations or holes that selectively absorb liquid from droplet peripheries. The center regions of the mask corresponding to droplet centers maintain a larger vertical distance, preventing contact with and disturbance of the sedimented material while still enabling effective liquid removal from the droplet edges.
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 method enables simultaneous and efficient separation of liquid from multiple droplets, optimizing the processing of samples for spectroscopic or mass spectrometric analysis by preventing cross-contamination and allowing further treatment of the sedimented material.
Implementation Method 1
utilizing capillary forces for efficient liquid removal without disturbing the sedimented material
Data Source
AI summary
The invention relates to methods for drawing-off liquid from individual droplets which are in a predefined arrangement on a flat substrate and have sedimented material enclosed in them. A mask of an absorbent material comprising a pattern of indentations or holes which corresponds at least partially to the regular arrangement of the individual droplets, or a stiff, rigid plate of an absorbent material is positioned above the flat substrate in such a way that the droplets come into contact with the absorbent material peripherally so that liquid is drawn off there-into. The invention also relates to a mask of an absorbent material with a substantially rectangular shape which has a predefined pattern of indentations or holes for the purpose of separating liquid and sedimented material enclosed therein.