Bipolar Electrochemical Printer Head for Precision Substrate Patterning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrochemical printing systems require direct connection to a substrate for deposition or etching, limiting their application in precision electrodeposition and etching on conductive substrates without individual attachment means, and existing bipolar electrochemistry systems are not suitable for precision processes.
Innovation Solution
A bipolar electrochemical printer head with a tubular nozzle and a housing supporting a first and second electrode, where the second electrode is positioned to engage the electrolyte meniscus on the substrate, creating a circuit and allowing ionic current to undergo charge transfer, enabling precision electrochemical deposition and etching without direct substrate connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional electrochemical printing systems are used, then material deposition can be achieved, but direct substrate connection is required which limits application versatility
Solution Approach 1:
The patent introduces an intermediary electrolyte meniscus that bridges the gap between the nozzle and substrate. The electrolyte acts as a mediator to complete the electrical circuit without requiring direct contact between the substrate and electrode system, enabling remote electrochemistry and eliminating the need for individual attachment means for each substrate
Solution Approach 2:
The patent replaces the mechanical connection system (direct substrate attachment) with an electrochemical field-based system. By using bipolar electrochemistry and ohmic potential variation in the electrolyte, the system achieves substrate engagement through electrical field interaction rather than mechanical contact, allowing for contactless or minimal-contact operation
2Manufacturing precision
If bipolar electrochemistry is used, then remote electrochemistry is enabled, but existing systems are not suitable for precision processes
Solution Approach 1:
The patent applies local quality by creating localized current density distribution through the bipolar electrochemical cell geometry. The spatial arrangement of electrodes and electrolyte flow creates region-specific potential gradients that enable precise control over where deposition and etching occur on the substrate, achieving both precision and remote operation capability
Solution Approach 2:
The patent utilizes parameter changes by controlling the ohmic potential drop in the electrolyte through adjustments in current density, electrolyte composition, and cell geometry. By varying these parameters, the system achieves precise control over the bipolar electrochemical reactions, enabling high-precision deposition and etching while maintaining remote operation
3Manufacturing precision
If electrolyte is expelled onto substrate, then circuit is closed for bipolar electrochemistry, but precise control of deposit shape and size is required
Solution Approach 1:
The patent applies dynamics by using controlled electrolyte flow rates and meniscus formation that can be dynamically adjusted during operation. The electrolyte flow is optimized to maintain proper meniscus contact with the substrate while controlling the rate of deposition, allowing real-time adjustment of deposit characteristics without sacrificing productivity
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 system achieves precise electrochemical printing and etching on conductive substrates with high bipolar current efficiency, allowing for remote electrochemistry and versatile applications in micro-patterning, including metal deposition and etching on various substrates with controlled deposit shape and size.
Implementation Method 1
ionic current in the electrolyte to undergo charge transfer at the conductive substrate between the nozzle and the substrate
Implementation Method 2
electrochemical printing and etching on conductive substrates
Implementation Method 3
electrochemical printing and etching on conductive substrates
Implementation Method 4
the second electrode is positioned to fluidly engage a meniscus of electrolyte expelled from the channel onto the substrate
Implementation Method 5
The driving force for bipolar electrochemistry is the ohmic potential variation in solution that forms during the passage of current in an electrochemical cell
Data Source
AI summary
A bipolar electrochemistry printer and method are disclosed wherein electrolytic deposition onto a conductive substrate is accomplished by inducing ionic current in an electrolytic cell disposed above the substrate to undergo charge transfer at the conductive substrate, such that a portion of the substrate becomes a bipolar electrode. The ohmic current in the substrate undergoes a second charge transfer back to ionic current and returning to the cathode of the electrolytic cell. In an alternative embodiment the printing is similarly accomplished by electrolytic etching.