Magnetoelastic Humidity Sensors with TiO2 Nanotube Sensing Layers


ATALAY S. , İZGİ T. , KOLAT V. S. , ERDEMOĞLU S. , Inan O. O.

SENSORS, cilt.20, 2020 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 20 Konu: 2
  • Basım Tarihi: 2020
  • Doi Numarası: 10.3390/s20020425
  • Dergi Adı: SENSORS

Özet

In this study, TiO2 nanotubes (TiO2-NTs) are coated with a drop-casting method on Fe40Ni38Mo4B18 amorphous ferromagnetic ribbons and the humidity response of the prepared magnetoelastic sensors (MES) is investigated. The synthesis of TiO2-NTs is performed using a hydrothermal process. Sample characterization is carried out using X-ray diffraction and scanning electron microscopy. The results show that the sensors can measure moisture values in the range of 5% to 95% with very high precision and very low hysteresis. The humidity variation between 5% and 95% shows a change in the sensor resonance frequency of 3180 Hz, which is a significant change compared to many magnetoelastic humidity sensors developed so far.