Circumferential Electrode Array for Oligomer Synthesis Crosstalk
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrode array designs face challenges in confining electrochemically-generated reagents when the density of electrodes is increased, leading to crosstalk and inefficient oligomer synthesis due to insufficient buffering capacity at close electrode distances.
Innovation Solution
A semiconductor electrode array with separately addressable electrodes surrounded by a continuous or discontinuous circumferential electrode and a porous reaction layer, utilizing counter electrodes to contain electrochemically-generated reactants and neutralizing agents, thereby preventing crosstalk and maintaining precise pH control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If electrode density is increased to improve productivity, then synthesis throughput increases, but crosstalk between adjacent electrodes increases due to insufficient buffering capacity
Solution Approach 1:
The electrode array is segmented into individual addressable electrodes, each surrounded by insulating material and optionally by a circumferential electrode. This segmentation allows independent control of each electrode while preventing crosstalk through physical isolation barriers.
Solution Approach 2:
A circumferential electrode acts as an intermediary element between adjacent electrodes. This intermediate structure provides additional buffering capacity and controls the diffusion of electrochemically-generated reagents, preventing them from reaching neighboring electrodes and causing crosstalk.
2Productivity
If electrode density is increased to improve productivity, then more electrodes fit in smaller area, but manufacturing precision becomes more difficult to maintain due to tight spacing
Solution Approach 1:
The problem of tight electrode spacing in two dimensions is solved by adding a third dimension - a circumferential electrode surrounding each central electrode. This vertical/starrational arrangement provides additional spacing and buffering capacity without increasing planar density requirements.
Solution Approach 2:
The circumferential electrode is nested around each central electrode, creating a concentric structure. This nested arrangement allows multiple functional elements (central electrode, insulating material, circumferential electrode) to occupy different spatial zones, enabling precise control of reagent confinement even at high densities.
3Reliability
If buffering capacity is increased to prevent crosstalk, then pH control improves, but device complexity increases due to additional buffering components
Solution Approach 1:
The circumferential electrode structure provides self-contained buffering capacity through its own electrochemical reactions. When a central electrode generates acidic or basic reagents, the circumferential electrode can compensate by generating opposite charges, automatically neutralizing the pH change without requiring external buffer additives.
Solution Approach 2:
The system dynamically adjusts pH control by changing the electrochemical parameters at the circumferential electrode. By controlling the potential applied to the circumferential electrode, the system can regulate the generation of counter-ions to maintain pH stability, replacing static chemical buffers with dynamic electrochemical control.
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 solution effectively confines electrochemically-generated reactants to specific areas, enhancing the accuracy and reliability of oligomer synthesis by minimizing crosstalk and maintaining controlled pH conditions, even at high electrode densities.
Implementation Method 1
confine the volume of electrochemically-generated reagents by means of a continuous or discontinuous circumferential electrode surrounding a selected electrode
Implementation Method 2
a porous reaction layer of disaccharide and monosaccharide material that adsorbs to the surface of the electrodes and contains free hydroxyl groups or free amine groups or sulfhydryl groups
Data Source
Figure 1
Figure 2
Figure 3
AI summary
There is disclosed an electrode array architecture employing continuous and discontinuous circumferential electrodes. There is further disclosed a process for the neutralization of acid generated at anode(s) by base generated at cathode(s) circumferentially located to each other so as to confine a region of pH change. The cathodes can be displayed as concentric rings (continuous) or as counter electrodes in a cross pattern (discontinuous). In this way reagents, such as acid, generated in a center electrode are countered (neutralized) by reagents, such as base, generated at the comers or at the outer ring. There is further disclosed an electrode array architecture having a plurality of electrodes in a substantially planar configuration and in a row and column format and a grid of counter electrodes also in a substantially planar configuration, wherein each electrode of the plurality of electrodes is surrounded by a grid, and wherein the plane of the plurality of electrodes is substantially parallel to the plane of the grid of counter electrodes.