A Magnetic Microsensor based on the Hall Effect in an AC Microplasma

극미세 교류 플라즈마 내에서의 홀 효과를 이용한 마이크로 자기센서

  • 서영호 (한국과학기술원 디지털나노구동연구단) ;
  • 한기호 (한국과학기술원 디지털나노구동연구단) ;
  • 조영호 (한국과학기술원 디지털나노구동연구단)
  • Published : 2003.08.01


This paper presents a new class of magnetic microsensors based on the Hall effect in AC microplasma. In the theoretical study, we develop a simple model of the plasma Hall sensor and express the plasma Hall voltage as a function of magnetic field, plasma discharge field, pressure, and electrode geometry. On this basis, we have designed and fabricated magnetic microsensors using AC neon plasma. In the experiment, we have measured the Hall voltage output of the plasma microsensors for varying five different conditions, including the frequency and the magnitude of magnetic field, the frequency and the magnitude of plasma discharge voltage, and the neon pressure. The fabricated magnetic microsensors show a magnetic field sensitivity of 8.87${\pm}$0.18㎷/G with 4.48% nonlinearity.


Plasma Hall Effect;Magnetic Sensor;AC Neon Plasma;Microsensor Packaging


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