کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
741882 1462081 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A novel ultra-high frequency humidity sensor based on a magnetostatic spin wave oscillator
ترجمه فارسی عنوان
یک سنسور رطوبت با فرکانس فوق العاده بالا بر اساس یک نوسانگر موج چرخشی مغناطیس استاتیک
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی

This paper presents a robust, simple and highly sensitive method to detect vapour compounds using a magnetostatic spin wave (MSW) tunable oscillator based on a yttrium iron garnet (YIG) epitaxial thin film coupled to a coplanar waveguide resonator. In this work, the device has been tested as relative humidity sensor. For this purpose, the coplanar waveguide resonator was coated with polyvinylpyrrolidone (PVP) polymer and used as a humidity probe. A dielectric change in the PVP due to a change in the ambient humidity introduces a fast phase shift in the probe, which causes a frequency shift in the MSW oscillator. The humidity sensing behavior of this device was investigated at room temperature over a range of 12.5–95% relative humidity (RH). Furthermore, the device was used to monitor human breath as a non-invasive sensor, showing great adaptability and ease of use in a real application. In conclusion, the sensor exhibited reproducibility, accuracy, high sensitivity, and fast response and recovery times. It also has the advantage of being simple and cost-effective.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 210, April 2015, Pages 297–301
نویسندگان
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