Capacitive Touch Screen Biomolecule Detection via Conductivity
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Solution Overview
Problem
Current in vitro diagnosis methods for biomolecules are costly, require large apparatus, and skilled techniques, limiting their use to professional settings, necessitating a more accessible and affordable solution for molecular analysis.
Innovation Solution
A method utilizing a capacitive touch screen to detect biomolecules by applying samples and measuring changes in capacitance, allowing for the detection and quantification of biomolecules through a simple and cost-effective process, suitable for point-of-care testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional in vitro diagnosis methods are used for biomolecule detection, then measurement precision is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent uses a capacitive touch screen as a simplified copy or alternative to complex professional detection apparatus. The touch screen, originally designed for user input, is repurposed to detect biomolecules through capacitance changes, providing a functional equivalent without requiring sophisticated laboratory equipment.
Solution Approach 2:
The invention employs inexpensive, readily available components such as capacitive touch screens and conductive adhesives that can be easily replaced or disposed of. This eliminates the need for expensive, durable laboratory instruments while achieving the detection function at minimal cost.
2Measurement precision
If conventional in vitro diagnosis methods are used, then measurement precision is improved, but ease of operation deteriorates due to requirement of skilled techniques
Solution Approach 1:
The system enables users to perform biomolecule detection themselves without requiring professional training or expertise. The capacitive touch screen interface is inherently user-friendly, allowing anyone to apply samples and interpret results through simple touch interactions, eliminating the need for skilled laboratory personnel.
Solution Approach 2:
The patent replaces complex mechanical and chemical laboratory procedures with an electrical field-based detection method using capacitive sensing. This substitution simplifies the operational process from manual sample handling and analysis to simple touch-based interaction with the screen.
3Measurement precision
If conventional diagnosis equipment is used, then measurement precision is maintained, but loss of time increases due to complex procedures
Solution Approach 1:
The invention skips intermediate steps and complex procedures required by conventional methods. By directly measuring capacitance changes on the touch screen surface, the system eliminates time-consuming steps such as sample preparation, incubation, and complex data processing, achieving rapid detection in minutes.
Solution Approach 2:
The patent merges multiple functions into a single integrated system. The capacitive touch screen simultaneously serves as the sample application surface, detection sensor, and display interface, eliminating the need for separate equipment and procedures that would increase analysis time.
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
Enables cheap and rapid detection of biomolecules using a capacitive touch screen, facilitating molecular analysis in non-professional settings, such as home or local health centers, without the need for expensive equipment or specialized expertise.
Implementation Method 1
detecting a change in capacitance of a surface of a touch panel generated according to the concentration of the biomolecules
Data Source
AI summary
There is provided a method of detecting biomolecules using a capacitive touch screen receiving a touch with a conductor as an input signal to perform an output on a display screen, and more particularly to a method of detecting target biomolecules by applying biomolecules having electrical conductivity to a touch panel and detecting a change in capacitance of a surface of a touch panel generated according to the concentration of the biomolecules.A method of detecting biomolecule according to the present invention uses a capacitive touch screen capable of being cheaply manufactured on a large scale, such that the method may have advantages such as cheap cost and a short analysis time and simply detect biomolecules in a personal terminal such as a smart phone, a tablet PC, and the like, on which a capacitive touch screen is mounted, as compared to the existing method requiring an expensive exclusive analysis apparatus based on absorbance or fluorescence having a large volume, a skilled experimental technique such as electrophoresis, or a long analysis time to thereby be performed only in an experimental room equipped with specialists and equipment.