Pillar-Type Electrode Biosensor for Focused Energy Application
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Solution Overview
Problem
Existing biosensors require high voltage to generate strong electric fields for energy application, leading to inefficient energy distribution and difficulty in targeting specific areas, especially small areas, due to the wide range of field energy dispersion.
Innovation Solution
A biosensor with a pillar-type electrode structure coated with a non-conductive material, allowing for energy concentration and control by adjusting the shape and size of the pillar electrodes and applying voltage to specific electrodes, enabling focused energy application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high voltage is applied between electrodes to obtain a strong electric field, then the electric field intensity is improved, but the energy consumption increases and the electric field spreads over a wide range making it difficult to target specific small areas
Solution Approach 1:
The electrode structure is segmented into multiple pillar electrodes arranged in an array, where each pillar electrode can be independently controlled. This segmentation allows the electric field to be concentrated at specific locations rather than spreading uniformly, enabling targeted energy application with lower overall voltage requirements
Solution Approach 2:
The pillar electrode structure creates localized high-intensity electric fields at the tips of individual pillars, while other areas maintain lower field intensities. This local quality enhancement allows strong electric fields to be generated only where needed, reducing overall energy consumption while maintaining effective treatment intensity at target sites
2Illumination intensity
If high voltage is applied between electrodes to obtain a strong electric field, then the electric field intensity is improved, but the device complexity and control difficulty increase
Solution Approach 1:
By dividing the electrode into multiple independent pillar electrodes, the system can selectively activate only the pillars needed for a specific treatment area. This reduces control complexity compared to adjusting a single large electrode, as individual pillars can be turned on or off independently to match the treatment zone geometry
Solution Approach 2:
The pillar electrode array adds a spatial dimension to electric field control, allowing patterns to be created by selective activation across the array. This dimensional approach simplifies control compared to traditional methods, as the pattern matching capability emerges naturally from the spatial arrangement rather than requiring complex temporal modulation
3Ease of manufacture
If conventional electrode structures are used, then the manufacturing process is simple, but the energy concentration and targeting capability are insufficient
Solution Approach 1:
The pillar electrode array structure can be manufactured using standard photolithography and etching processes commonly used in semiconductor and microelectromechanical systems fabrication. This segmentation approach achieves precise energy concentration through geometric design rather than requiring complex assembly or alignment procedures
Solution Approach 2:
The precision of energy concentration is achieved by controlling geometric parameters of the pillar electrodes (such as spacing, height, and diameter) during fabrication, rather than requiring complex post-manufacturing adjustments. These parameter changes can be precisely controlled through standard microfabrication techniques
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 approach allows for the concentration of energy at desired areas with a lower voltage, achieving a more uniform and intense electric field distribution, enhancing energy application efficiency and specificity.
Implementation Method 1
an electric field is formed by applying a predetermined voltage between two electrodes
Implementation Method 2
the pillar-type electrode structure is coated with the non-conductive material
Data Source
AI summary
Disclosed herein is a biosensor capable of receiving bioelectric stimulation or bio-signals. The biosensor has a pillar-type electrode structure that is coated with a non-conductive material. The biosensor includes an electrode substrate, and an electrode structure having a plurality of pillar electrodes protruding on the substrate. The pillar-type electrode structure is coated with the non-conductive material in at least one of: a first coating structure in which at least one or more of the plurality of pillar electrodes are coated with the non-conductive material and at least a portion of a side surface of each of the coated pillar electrodes is coated with the non-conductive material; and a second coating structure in which at least one of a top surface of the substrate and bottom surfaces of the at least one or more of the pillar electrodes are coated with the non-conductive material.