Plasma Treatment Roller With Segmented Electrodes
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Solution Overview
Problem
Existing plasma-treatment instruments for surfaces, particularly skin, lack efficiency and variability in plasma field generation due to a single electrode design, which limits adaptability to irregular surfaces and control over plasma treatment.
Innovation Solution
The design features multiple partial electrodes arranged alongside each other with alternating insulation by a dielectric, connected to different terminals of a high a.c. voltage source, allowing for enhanced plasma field formation with increased intensity near the electrodes and cancellation further away, creating a field-free space on the treated surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a single electrode design is used, then the device structure is simple, but the plasma field intensity and treatment efficiency are limited
Solution Approach 1:
The single electrode is divided into multiple partial electrodes (at least two) arranged alongside each other at the same spacing from the shell surface. Each partial electrode is connected to different terminals of the high a.c. voltage source, creating multiple plasma fields that overlap to produce enhanced plasma field intensity and improved treatment efficiency.
2Adaptability or versatility
If the roller adapts to irregular surfaces, then treatment coverage is improved, but control over plasma treatment becomes more difficult
Solution Approach 1:
The dielectric surrounding the electrode is provided with a structuring that creates air spaces on the shell surface when rolled on the treatment surface. This structuring allows different regions of the roller to have different properties: the flexible electrode-dielectric assembly adapts to surface irregularities while the air spaces maintain controlled plasma formation zones, preserving treatment control despite surface adaptability.
3Power
If partial electrodes are fed with equal-but-opposite voltages, then plasma field intensity near electrodes is doubled, but field interference in remote regions increases
Solution Approach 1:
Adjacent partial electrodes are fed with equal-but-opposite a.c. voltages that compensate each other in the remote region. The opposite polarity voltages create electric fields that cancel each other out at distances from the electrode, preventing field interference in the treated area while maintaining high plasma field intensity in the immediate vicinity of the electrodes where the opposite fields reinforce rather than cancel.
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 configuration enhances plasma field intensity near the electrodes while maintaining a field-free space on the treated surface, improving treatment efficiency and adaptability to irregular surfaces.
Implementation Method 1
a plasma-treatment instrument for treating a surface with a dielectric-barrier plasma field which is generated between an electrode, supplied with a high a.c. voltage by a control device, and the surface
Implementation Method 2
The partial electrodes are connected to different terminals of a source of high a.c. voltage... the plasma field forms between the two electrodes
Implementation Method 3
The dielectric in this case exhibits a structuring, by virtue of which air spaces are formed on the shell surface of the roller when the roller is rolled on the surface
Data Source
AI summary
A plasma-treatment instrument for treating a surface with a dielectric-barrier plasma field generated between an electrode and the surface has a high a.c. voltage supplied to the electrode by a controller. The electrode forms with a dielectric surrounding the electrode a cylindrical roller that is rotatably supported in a grip housing. The plasma-treatment instrument has a shell surface and is capable of being rolled along the surface. The plasma-treatment allows an efficient and safe treatment of the surface by virtue of the fact that the electrode includes at least two partial electrodes arranged alongside one another at equal intervals from the shell surface and which are insulated from one another by the dielectric. The at least two partial electrodes are connected to different terminals of a source of high a.c. voltage.