FRET Displacement Sensor for Minute Pressure and Surface Measurement
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Solution Overview
Problem
Conventional displacement measurement systems face challenges in accurately measuring minute regions due to the need for constant pressing regions and complex circuits, and they suffer from reduced accuracy when measuring surface irregularities and pressure.
Innovation Solution
A displacement sensor with layered emission particles emitting different wavelengths, separated by spacer layers and excitation energy absorbents, utilizing Förster resonance energy transfer (FRET) to measure minute displacements and pressures by analyzing changes in emission spectra.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pressure-sensitive resin with conductive particles is used to measure displacement or pressure, then the measurement range can be extended by arranging multiple thin film transistors in a matrix, but the device complexity and circuit complexity increase significantly
Solution Approach 1:
The patent replaces the electrical measurement system (thin film transistors and conductive particles) with an optical measurement system. Emission particles are excited by light, and the displacement is measured by detecting changes in emission intensity or wavelength through optical detection, eliminating the need for complex electrical circuits and thin film transistor arrays.
Solution Approach 2:
The patent utilizes changes in optical parameters (emission intensity, emission wavelength) of the emission particles to detect displacement. By monitoring how the emission characteristics change in response to pressure or displacement, the system achieves measurement capability without requiring complex electrical reading circuits.
2Adaptability or versatility
If individual electrodes with varying gaps are arranged in a matrix to achieve wide pressure measurement range, then large area measurement becomes possible, but the manufacturing precision and alignment difficulty increase
Solution Approach 1:
The patent replaces the mechanical electrode structure with an optical emission particle system. The emission particles are distributed in a matrix and excited by light, with displacement measured through optical detection. This eliminates the need for precise electrode alignment and gap control during manufacturing.
Solution Approach 2:
The patent divides the measurement area into multiple regions with emission particles, similar to the electrode matrix approach, but uses optical excitation and detection instead of electrical connections. This allows large area measurement while simplifying manufacturing by eliminating the need for precise electrode alignment.
3Measurement precision
If conventional pressure sensors are used to measure surface irregularities, then pressure can be detected, but the accuracy is reduced when measuring minute regions and surface irregularities
Solution Approach 1:
The patent replaces conventional pressure sensors with an optical measurement system using emission particles. By detecting changes in emission characteristics (intensity or wavelength) of the particles in response to pressure or surface irregularities, the system achieves high measurement precision for minute regions without requiring complex sensor structures.
Solution Approach 2:
The patent utilizes sensitive optical parameter changes (emission intensity, emission wavelength) of the emission particles to detect minute pressure changes and surface irregularities. This optical detection method provides high measurement precision for surface irregularities while keeping the sensor structure relatively simple.
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 high-accuracy measurement of minute displacements and pressures by detecting changes in emission spectra, simplifying the measurement process and improving accuracy.
Implementation Method 1
A displacement sensor with layered emission particles emitting different wavelengths, separated by spacer layers and excitation energy absorbents, utilizing Förster resonance energy transfer (FRET) to measure minute displacements and pressures by analyzing changes in emission spectra.
Implementation Method 2
first emission particles emitting light at a first wavelength by excitation energy are distributed over at least a one-dimensional extent, a second emission particles layer in which second emission particles emitting light at a second wavelength different from the first wavelength by excitation energy are distributed over the above one-dimensional extent
Implementation Method 3
a spacer layer that separates the first emission particles layer and the second emission particles layer in a direction intersecting the above one-dimensional extent, and which includes an excitation energy absorbent that absorbs excitation energy
Data Source
AI summary
A displacement sensor includes a first emission particles layer provided to be contactable with a measurement object, and in which first emission particles that emit light at a first wavelength by excitation energy are distributed over at least a one-dimensional extent, a second emission particles layer in which second emission particles that emit light at a second wavelength different from the first wavelength by the excitation energy are distributed over the above one-dimensional extent, and a spacer layer that separates the first emission particles layer and the second emission particles layer in a direction intersecting the above one-dimensional extent, and which includes an excitation energy absorbent that absorbs the excitation energy.