Nanopore Array Calibration Through Thermal Feedback Control
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Solution Overview
Problem
Nanopore array devices experience variations in temperature across the array due to ambient conditions, device components, and thermal conductivity differences, leading to inconsistent measurement signals and reduced confidence in molecular entity analysis.
Innovation Solution
A method of calibrating nanopore array devices by measuring ion flow signals, analyzing them against a reference value, and adjusting thermal control components to regulate temperature uniformly across the array, using active and passive thermal sources and feedback loops to stabilize conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If temperature control is not implemented, then device complexity is reduced, but measurement precision deteriorates due to temperature variations across the nanopore array
Solution Approach 1:
The device is divided into multiple independently controllable flow cells, each with its own thermal control component. This segmentation allows individual temperature regulation for each flow cell, enabling precise control of temperature variations across the nanopore array while maintaining manageable system complexity through modular architecture.
Solution Approach 2:
Temperature sensors are integrated into each flow cell to provide real-time temperature feedback to the control system. The feedback mechanism continuously monitors temperature and adjusts the thermal control components accordingly, ensuring stable temperature conditions across all flow cells and improving measurement precision without requiring overly complex manual control systems.
2Productivity
If multiple flow cells are used to increase data collection, then productivity is improved, but temperature uniformity across the array deteriorates
Solution Approach 1:
Each flow cell in the array is equipped with its own dedicated thermal control component, allowing independent temperature regulation. This segmentation enables simultaneous operation of multiple flow cells for increased data collection while maintaining temperature uniformity through individual control of each flow cell's thermal environment.
Solution Approach 2:
The thermal control system provides localized temperature regulation for each flow cell based on its specific thermal conditions. Each flow cell receives customized thermal management tailored to its local environment, ensuring uniform temperature across the array while allowing high productivity through parallel processing of multiple flow cells.
3Measurement precision
If thermal control components are added to regulate temperature, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The thermal control system operates autonomously using integrated temperature sensors and automated control mechanisms. Each flow cell self-regulates its temperature based on sensor feedback, eliminating the need for complex manual intervention or external control systems. This self-service approach improves signal normalization accuracy while keeping device complexity manageable through automation.
Solution Approach 2:
The thermal control components serve multiple functions: temperature regulation, signal stabilization, and data quality assurance. By making the thermal control system multi-functional, the patent reduces the need for separate dedicated components for each function, thereby improving measurement precision without proportionally increasing device complexity.
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
Enhances measurement accuracy and confidence in determining molecular entities by normalizing signal output and reducing temperature variations, allowing for more precise analysis of polymer sequences and translocation rates.
Implementation Method 1
adjusting the thermal control component to regulate the temperature of the array of nanopore channels
Implementation Method 2
an electrical signal is applied as a potential difference or current across the array of nanopore channels that will provide a meaningful measurement signal
Data Source
AI summary
A method of calibrating a nanopore array device is described. The nanopore array device comprises an array of nanopore channels, each nanopore channel formed in a membrane separating two ionic solutions. The nanopore channel connects the ionic solutions and the device further comprises a thermal control component for adjusting the temperature of the array of nanopore channels. The method comprises the steps of measuring signals indicative of ion flow through the nanopore channels; analysing the measurement signals and comparing to a reference value; and adjusting the thermal control component to regulate the temperature of the array of nanopore channels based upon the comparison.