Nanomechanical Sensor Receptor Response Modulation
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Solution Overview
Problem
Nanomechanical sensors, such as surface stress sensors, face challenges in varying response characteristics for detecting diverse substances, requiring multiple receptor types with high sensitivity, stability, and durability, which limits the types of chemical substances that can be used.
Innovation Solution
A method involving the modulation of receptor response characteristics by mixing a third fluid with the fluid to be measured and a purge fluid before supplying them to the sensor, allowing for different sensor signals to be obtained based on the modulation, thereby increasing the variety of detectable substances without developing new receptors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of receptors are used to detect diverse substances, then the types of detectable substances increase, but the device complexity and difficulty of receptor selection increase
Solution Approach 1:
The patent changes the chemical parameter of the fluid environment by introducing a third fluid that selectively interacts with the receptor-substance complex. This modifies the receptor's response characteristics without changing the receptor itself, allowing one receptor to detect multiple substances by varying the fluid composition
Solution Approach 2:
The third fluid acts as an intermediary substance that mediates between the receptor and the target substance. It selectively enhances or modulates the receptor's response to specific substances, enabling selective detection without requiring multiple specialized receptors
2Adaptability or versatility
If multiple types of receptors are developed for different substances, then detection coverage increases, but the manufacturing complexity and cost increase
Solution Approach 1:
The patent makes a single receptor type perform multiple detection functions by introducing a third fluid that selectively modulates the receptor's response to different substances. This universal approach allows one receptor design to detect multiple target substances, eliminating the need to manufacture multiple specialized receptor types
Solution Approach 2:
By changing the composition and concentration parameters of the third fluid, the system achieves different detection modes with the same receptor, simplifying manufacturing while expanding detection capabilities
3Measurement precision
If the receptor maintains high sensitivity to a specific substance, then measurement precision improves, but the receptor becomes less stable when exposed to various sample fluids and purging fluids
Solution Approach 1:
The third fluid serves as a protective intermediary that enhances the receptor's selectivity and stability. It selectively interacts with the target substance-receptor complex while being resistant to interference from other sample fluids and purging fluids, thereby maintaining sensitivity without sacrificing stability
Solution Approach 2:
The third fluid creates a chemically selective environment that protects the receptor from non-specific interactions with various sample and purging fluids, maintaining a stable and controlled detection environment that preserves receptor sensitivity
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 enhances sensitivity and selectivity for specific substances, allowing for more diverse measurements and improving receptor performance without the need for novel receptor development.
Implementation Method 1
a nanomechanical sensor having a receptor that adsorbs a component in a fluid supplied to the nanomechanical sensor
Implementation Method 2
a surface stress sensor which detects a stress generated in a membrane of the receptor as a change in surface stress by expansion/contraction of the membrane due to adsorption/desorption of various components
Data Source
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AI summary
In an analysis of a fluid component using a nanomechanical sensor covered with a receptor, the same receptor is caused to express different response characteristics. In a measuring system of analyzing a response when a sample gas and a purge gas are supplied to a nanomechanical sensor while switching the sample gas and the purge gas, a gas (external gas) different from both gases is mixed into a gas channel and supplied to the sensor for measurement. Since a response characteristic of a receptor is modulated by mixing of the external gas, the object described above is achieved.