Paper-Based Substrates for Low-Cost Electronic Sensors
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Solution Overview
Problem
Conventional electronic components are typically fabricated on silicon substrates, which are time-consuming and costly to produce, limiting the development of cost-effective and portable diagnostic devices.
Innovation Solution
Fabricating electronic components on paper-based substrates, which can be inexpensive and versatile, by incorporating dopants and patterned conductive structures that respond to electromagnetic radiation, enabling the creation of sensitive sensors and devices that can detect various substances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic components are fabricated on silicon substrates, then device performance and reliability are improved, but manufacturing cost and production time increase
Solution Approach 1:
The patent applies the disposable principle by using paper-based substrates instead of expensive silicon substrates. The paper substrate is designed to be single-use, eliminating the need for costly, complex silicon fabrication processes while maintaining sufficient device performance for diagnostic applications. This directly reduces manufacturing cost and production time.
Solution Approach 2:
The patent changes the substrate material parameter from silicon to paper, fundamentally altering the fabrication approach. This parameter change enables the use of simpler, cheaper manufacturing techniques such as inkjet printing and thermal lamination, thereby reducing both cost and production time while preserving essential device functionality.
2Ease of manufacture
If electronic components are fabricated on paper-based substrates, then manufacturing cost is reduced, but device complexity increases due to additional dopant incorporation steps
Solution Approach 1:
The patent merges multiple functions into the paper substrate itself. The substrate serves as both the structural base and the platform for incorporating dopants, conductive structures, and sensing elements. This consolidation simplifies the overall device architecture and reduces the number of separate fabrication steps required, thereby reducing process complexity despite the novel materials used.
Solution Approach 2:
The paper substrate is designed to perform multiple functions: providing structural support, enabling dopant incorporation, supporting conductive pattern deposition, and facilitating sensor operation. This multi-functionality reduces the need for additional specialized components and layers, simplifying the overall fabrication process while maintaining device performance.
3Ease of manufacture
If paper-based substrates are used, then cost and portability are improved, but sensitivity and detection accuracy may deteriorate
Solution Approach 1:
The patent creates a composite structure by incorporating dopants (such as metal nanoparticles, polymers, or biological molecules) into the paper substrate and adding patterned conductive structures. This composite approach enhances the optical, electrical, and sensing properties of the paper, enabling detection accuracy comparable to or exceeding traditional substrates while maintaining cost advantages.
Solution Approach 2:
The patent replaces traditional complex sensing mechanisms with simpler optical or electrical detection methods that leverage the inherent properties of the paper-dopant-conductive structure composite. For example, colorimetric changes or electrical resistance variations in the conductive patterns provide detection signals, eliminating the need for complex mechanical or electronic sensor systems and maintaining high sensitivity at low cost.
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 production of cost-effective, portable, and disposable diagnostic devices with enhanced sensitivity and accuracy, suitable for on-site detection and analysis, leveraging the unique properties of paper-based substrates to achieve significant cost savings and improved performance.
Implementation Method 1
a patterned conductive structure coupled to the paper-based substrate, wherein the patterned conductive structure responds to electromagnetic radiation
Data Source
AI summary
The present disclosure relates to paper-based substrates and apparatus comprising such substrates. The apparatus may include a patterned conductive structure coupled to the paper-based substrate, wherein the patterned conductive structure responds to electromagnetic radiation.