Electrode With Conductivity Gradient for Homogeneous Electric Field
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Solution Overview
Problem
Existing electrodes used to apply electrical potentials to materials, such as plastic films, often result in inhomogeneous electric fields, leading to uneven material influence and potential permanent traces that can be disadvantageous for subsequent processing steps.
Innovation Solution
An electrode comprising a first electrically conductive material, such as a metal wire, extending partially parallel to the surface, and a second electrically conductive material with lower conductivity, arranged between the first material and the surface, connected via electrical connection lines to ensure homogeneous electric field distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If needle electrodes are used to generate high potential differences, then noticeable effects can be produced in plastic films, but an inhomogeneous electric field arises causing uneven charge shifts and permanent traces in the material
Solution Approach 1:
A second electrically conductive material with lower conductivity than the first conductive material is introduced as an intermediary between the high-potential first conductive material and the plastic film. This intermediate layer distributes the electric field more uniformly across the material surface, preventing localized high-field regions that cause inhomogeneous charge shifts and permanent traces, while still allowing sufficient potential difference to be applied for effective treatment.
2Power
If the first electrically conductive material has high conductivity, then sufficient electrical potential can be applied, but high currents may flow causing thermal effects and wire burnout
Solution Approach 1:
The electrode system employs materials with different conductivity properties in different regions/layers: the first electrically conductive material has high conductivity to ensure sufficient electrical potential application, while the second electrically conductive material has lower conductivity to limit current flow and prevent thermal effects. This gradient in conductivity properties allows the system to simultaneously achieve the necessary electrical potential while controlling current density to avoid overheating and wire burnout.
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 proposed electrode design achieves a homogeneous electric field on the material surface, preventing uneven charge shifts and potential damage from high currents, thus ensuring even material influence and preventing adverse traces.
Implementation Method 1
an electrical connection connecting the first electrically conductive material to the second electrically conductive material
Implementation Method 2
a very strong electric field can emanate from each needle tip
Implementation Method 3
applying an electrical potential to a surface of a conductive or non-conductive material, in particular a plastic material, which electrical potential, in particular, causes electrical polarization
Data Source
AI summary
The invention describes an electrode for applying an electrical potential to a surface of a conductive or non-conductive material, in particular a plastic material, which electrical potential, in particular, causes electrical polarization, comprising a first electrically conductive material, in particular a metal wire, which first electrically conductive material extends at least partially parallel to the surface, comprising a second electrically conductive material extending at least partially parallel to the surface, at least one electrical connection connecting the first electrically conductive material to the second electrically conductive material, the first electrically conductive material having a greater conductivity than the second electrically conductive material.