Thermoelectric Molecular Testing Device Thermal Management
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Solution Overview
Problem
Molecular testing devices face thermal transfer inefficiencies due to thermally inefficient boundaries in reaction vessels, limiting the effectiveness of combined amplification and hybridization processes in molecular assays.
Innovation Solution
A molecular testing device with a thermoelectric heating and cooling module that includes a heat transfer surface adapted to contact a thermo-conductive exterior surface of a combined amplification and hybridization reaction chamber, utilizing thin-film thermoelectric devices for precise temperature control and efficient thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If separate amplification and hybridization are used, then thermal transfer efficiency is improved, but fluidic complexity increases
Solution Approach 1:
The patent combines amplification and hybridization into a single reaction chamber, eliminating the need for separate vessels and complex fluidic connections. The microarray is integrated directly into the reaction chamber wall, allowing both processes to occur in the same fluidic environment while maintaining thermal efficiency through direct thermal coupling.
Solution Approach 2:
The patent introduces a thermally conductive intermediate layer between the heating element and the reaction chamber to improve thermal transfer efficiency. This intermediary component acts as a thermal bridge, ensuring efficient heat transfer while allowing the combined amplification and hybridization processes to occur in a single chamber.
2Device complexity
If combined amplification and hybridization are used, then fluidic complexity is reduced, but thermal transfer efficiency decreases
Solution Approach 1:
The reaction chamber is constructed with composite materials that provide both structural integrity and high thermal conductivity. The chamber wall incorporates thermally conductive materials to ensure efficient heat transfer from the heating element to the reaction mixture, while the integrated microarray is positioned to maximize thermal coupling without compromising the combined amplification and hybridization functionality.
Solution Approach 2:
The patent applies local thermal enhancement by positioning the microarray in direct thermal contact with the heating element or thermally conductive surfaces within the reaction chamber. This localized thermal coupling ensures that the hybridization process receives adequate thermal energy while the rest of the chamber maintains the conditions needed for both amplification and hybridization to proceed efficiently.
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 solution enhances thermal efficiency, allowing for precise temperature control and improved performance in PCR processes, reducing temperature offsets and achieving comparable results to conventional thermal cyclers while simplifying fluidics and operational complexity.
Implementation Method 1
a heating and cooling module comprising a thermoelectric heating and cooling device, and a removable test module comprising a combined amplification and hybridization reaction chamber comprising a thermo-conductive exterior surface
Implementation Method 2
a heating and cooling module comprising a thermoelectric heating and cooling device
Implementation Method 3
a heating and cooling module comprising a thermoelectric heating and cooling device
Data Source
AI summary
A molecular testing device comprises a heating and cooling module having a thin-film thermoelectric heating and cooling device, and a removable test module having a combined amplification and hybridization reaction chamber. The reaction chamber comprises a thermo-conductive exterior surface and a microarray on an interior surface. The thin-film thermoelectric heating and cooling device has a heat transfer surface that is adapted to make contact with the thermo-conductive exterior surface of the reaction chamber. The molecular testing device may be used to perform a PCR in the reaction chamber.