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Comparison of in-plane and out-of-plane piezoelectric microresonators for real-time monitoring of engine oil contamination with diesel

Real-time MonitoringEngineeringSensorsMicrofabricationMechanical EngineeringTransducer PrincipleOut-of-plane Piezoelectric MicroresonatorsPiezoelectricitySensor DesignInstrumentationEngine Oil ContaminationMicromachined Ultrasonic Transducer