Particle Deposition Device with Dual Chamber and Vent
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Solution Overview
Problem
Existing methods for depositing particles onto surfaces using liquid-based techniques are non-reproducible and lack precision, especially when dealing with small volumes and capillary phenomena, making it difficult to control the quantity of particles deposited consistently.
Innovation Solution
A device comprising a first chamber for particle-laden liquid and a second chamber with a communication orifice and vent, allowing controlled migration of liquid onto a substrate, ensuring repeatable and precise deposition by managing capillary effects and evaporation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If liquid is deposited onto the surface using conventional methods, then particles can be deposited onto the surface, but the quantity of particles deposited cannot be controlled consistently due to capillary phenomena and operator dexterity variations
Solution Approach 1:
The device is divided into two separate chambers: a first chamber for holding the particle-laden liquid and a second chamber for receiving the liquid and substrate placement. This segmentation isolates the liquid deposition process from the evaporation process, allowing precise control over the initial liquid volume deposited onto the substrate while the evaporation occurs in a controlled second chamber environment.
Solution Approach 2:
The communication orifice acts as an intermediary element between the first and second chambers. It controls the transfer of liquid from the first chamber to the second chamber, allowing calibrated volumes of liquid to be deposited onto the substrate in a repeatable manner, independent of operator dexterity.
2Quantity of substance
If small volumes of liquid are deposited, then particle deposition can be achieved, but capillary phenomena become predominant and complicate the deposition process
Solution Approach 1:
The device pre-calibrates the liquid volume to be deposited through the design of the communication orifice and chamber geometry. By establishing the liquid volume control mechanism before the deposition process begins, the device eliminates the need for complex real-time adjustments during deposition, reducing process complexity even when handling small volumes.
3Manufacturing precision
If a calibrated volume of liquid is deposited to ensure consistent material availability, then deposition precision can be improved, but the device and process complexity increases
Solution Approach 1:
The device uses geometric parameters (chamber volumes, orifice dimensions) to control liquid deposition. By fixing these physical parameters during device fabrication, the system achieves calibrated volume deposition without requiring complex active control mechanisms, maintaining simplicity while ensuring precision.
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 enables deterministic and reproducible particle deposition, independent of operator dexterity, with the ability to calibrate the quantity of particles deposited accurately, even on structured substrates, by managing liquid migration and evaporation efficiently.
Implementation Method 1
When the volumes of liquid to be deposited are small and the sizes become small, capillary phenomena become predominant and complicate matters
Implementation Method 2
Liquid can be deposited onto the surface and then evaporated
Data Source
Figure 1~3
Figure 4~7
AI summary
Liquid particle deposition device (10), comprising: - a first chamber (11), - a second chamber (12), - a communication orifice between the first chamber (11) and the second chamber (12), and - a vent provided in the second chamber and connecting the second chamber to a medium (200) external to the device.