Integrated Heating Element for Piezoacoustic Resonator Temperature Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current piezoacoustic resonator devices for substance detection lack improved measuring accuracy and expanded application fields, particularly in controlling temperature for optimal substance absorption conditions.
Innovation Solution
Integration of a heating device with a resistance heater layer, constructed in a thin film configuration, within the piezoacoustic resonator element to control working temperature and enhance signal output based on resonant frequency, allowing for precise temperature regulation and increased detection sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a piezoacoustic resonator element is used for substance detection, then detection capability is provided, but measuring accuracy is insufficient without temperature control
Solution Approach 1:
The patent combines the heating element and piezoacoustic resonator element into a single integrated device. The heating element is formed in the same metal layer as the electrode of the resonator element, allowing both functions to coexist in one compact structure. This integration enables temperature control for improved detection accuracy while maintaining the substance detection capability.
Solution Approach 2:
The integrated device serves multiple functions: substance detection through the piezoacoustic resonator and temperature control through the integrated heating element. The heating element can be used to control absorption conditions for different substances, expanding the device's applicability to various detection scenarios requiring different temperature conditions.
2Measurement precision
If temperature control is added to improve detection accuracy, then measuring precision increases, but device complexity increases
Solution Approach 1:
The heating element and resonator electrode are formed in the same metal layer using the same microstructuring process. This merging of functions into a single layer and fabrication process minimizes additional complexity while enabling temperature control for improved detection accuracy.
Solution Approach 2:
The heating element is integrated directly with the resonator structure, allowing the device to self-regulate temperature at the detection site. The compact integration reduces the need for external temperature control systems, thereby reducing overall device complexity while maintaining detection precision.
3Device complexity
If thin film technology is used to integrate heating element, then integration density increases, but manufacturing precision requirements increase
Solution Approach 1:
The heating element and resonator electrode are formed in the same metal layer with the same thickness (500 nm). This merging approach allows both elements to be fabricated simultaneously using standard thin film deposition and microstructuring techniques, achieving high integration density without requiring separate precision control for different layer thicknesses.
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
The integrated heating device enables effective temperature compensation of the resonant frequency, improving detection accuracy and expanding the operational range of the sensor by controlling absorption conditions, thus enhancing the detection of specific substances.
Implementation Method 1
a heating device with a heating element that is integrated into the piezoacoustic resonator element for controlling the working temperature
Implementation Method 2
when an alternating voltage is applied to the piezoelectric layer by means of the electrodes, a bulk wave of the piezoelectric layer is induced with a resonant frequency
Data Source
AI summary
A device includes at least one piezoacoustic resonator element (21-29) having at least one piezoelectric layer (21a-29a) and two electrodes (21b-29b, 21c-29c) applied to the piezoelectric layer (21a-29a). The piezoacoustic resonator element (21-29) is configured in such a manner that, when a voltage is applied to the piezoelectric layer (21a-29a) by electrodes (21b-29b, 21c-29c), a bulk wave of the piezoelectric layer (21a-29a) is induced with a resonant frequency. The device also includes a heating device with a heating element (211-219), integrated into the piezoacoustic resonator element (21-29), for controlling the working temperature of the device.