Microswitch Using Porous Coordination Polymer Conductor
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Solution Overview
Problem
Current microswitch technologies face limitations in improving characteristics such as power consumption, response speed, and manufacturing costs due to the inherent limitations of existing materials and techniques, particularly in the refinement of microswitches using photolithography and the challenges of achieving high-performance switching without irreversible material fractures.
Innovation Solution
A microswitch is developed using a porous coordination polymer conductor formed by adding a conductivity aid to a porous coordination polymer, with two electrodes having different oxidation-reduction potentials, allowing for electrical switching between high and low resistance states without irreversible fractures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If photolithography technique is used for refinement of microswitch, then manufacturing precision is improved, but device complexity increases and manufacturing costs increase
Solution Approach 1:
The patent changes the fundamental material parameter from conventional semiconductor materials to porous coordination polymers, enabling microswitch fabrication without photolithography. This material substitution allows direct formation of microswitch structures through self-assembly and electrochemical processes, eliminating complex photolithography steps while achieving sub-micron precision.
Solution Approach 2:
The patent replaces the mechanical photolithography system with an electrochemical field-based approach. By applying electric fields and using electrochemical reactions within the porous coordination polymer structure, microswitch patterns are formed without mechanical contact or complex alignment systems, simplifying the manufacturing process.
2Manufacturing precision
If photolithography technique is used for refinement of microswitch, then manufacturing precision is improved, but manufacturing costs increase
Solution Approach 1:
The patent changes the material parameter to porous coordination polymers that can be synthesized through simple solution-based methods and electrochemical processing. This eliminates the need for expensive photolithography equipment and materials, achieving cost-effective sub-micron fabrication through low-cost chemical processes.
Solution Approach 2:
The patent employs disposable porous coordination polymer materials that can be synthesized cheaply and processed through simple electrochemical methods. The materials are designed to be consumed in the fabrication process itself, eliminating the need for expensive reusable photolithography masks and equipment maintenance.
3Ease of manufacture
If existing microswitch materials are used, then manufacturing process is simple, but characteristics improvement reaches limit
Solution Approach 1:
The patent uses composite porous coordination polymer structures combining organic ligands with metal ions or clusters. This composite approach provides both structural integrity for simple manufacturing and tunable electronic properties for improved microswitch characteristics, including higher on-off ratios and better stability.
Solution Approach 2:
The patent introduces local functional groups and metal centers within the porous coordination polymer structure to create regions with specific electronic properties. This local quality enhancement allows optimization of charge transport, trapping, and switching characteristics without complicating the overall manufacturing process.
4Ease of manufacture
If new mechanism switch like ReRAM is used, then manufacturing costs reduce and structure simplifies, but stable operation requires high current flow
Solution Approach 1:
The patent employs porous coordination polymer structures with controlled pore sizes and distributions. These porous structures facilitate efficient ion and charge transport, enabling stable switching operation at lower current levels compared to dense ReRAM structures. The porosity enhances electrochemical reactions and charge carrier mobility.
Solution Approach 2:
The patent optimizes the electrochemical parameters of the porous coordination polymer, including redox potentials, charge transfer rates, and ionic conductivity. By tuning these parameters, the microswitch achieves stable operation with reduced current requirements while maintaining the simple structure and low manufacturing costs of new-mechanism switches.
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 microswitch achieves micronization, high integration, power saving, and improved functionality with reduced weight and manufacturing costs, enabling applications in memory devices and programmable circuits with enhanced durability and response speed.
Implementation Method 1
a porous coordination polymer conductor which is obtained by adding a conductivity aid to a porous coordination polymer
Implementation Method 2
a porous coordination polymer conductor which is obtained by adding a conductivity aid to a porous coordination polymer
Implementation Method 3
a porous coordination polymer (PCP) which is a crystalline solid having nanolevel pores that is obtained from a metal ion and an organic ligand
Implementation Method 4
the porous coordination polymer (PCP) is a crystalline solid having nanolevel pores that is obtained from a metal ion and an organic ligand and is considered to be used for various applications such as gas adsorption
Data Source
AI summary
Provided is a microswitch including a first electrode, a second electrode, and a porous coordination polymer conductor, in which the porous coordination polymer conductor is represented by the following Formula (1), and a metal forming the first electrode and a metal forming the second electrode have different oxidation-reduction potentials,[MLx]n(D)y (1),where M represents a metal ion selected from group 2 to group 13 elements in a periodic table, L represents a ligand that has two or more functional groups capable of coordination to M in a structure of L and is crosslinkable with two M's, D represents a conductivity aid that includes no metal element, x represents 0.5 to 4 and y represents 0.0001 to 20 with respect to x as 1, n represents the number of repeating units of a constituent unit represented by [MLx], and n represents 5 or more.