사각파 구동에 의한 평면홀 저항 센서의 출력 신호 향상

다국어 초록 (Multilingual Abstract)

In PHR sensor, PHR signals V<SUB>PHR</SUB> was proportional to the driving current, V<SUB>DC</SUB> and V<SUB>2f</SUB> signals were caused by self field by sine wave driving current. The V<SUB>PHR</SUB> and V<SUB>2f</SUB> by sine wave driving were well fitted with calculated one by single domain model. The V<SUB>PHR</SUB> by square wave driving were measured as the 1f, 3f, 5f .... signals, which higher order harmonics were included in square wave. The V<SUB>DC</SUB> and V<SUP>Squ</SUP><SUB>DC</SUB> by sine and square wave driving showed same magnetic field dependence and V<SUP>Squ</SUP><SUB>DC</SUB> = 2V<SUB>DC</SUB>. The magnetic bead signals by square wave driving were 2 times higher than that by sine wave driving. Thus square wave driving can be used for the accuracy improvement of biosensors.

참고문헌 (Reference)

1 S. J. Han, 42 : 3560-, 2006

2 L. Ejsing, 293 : 667-, 2005

3 L. Neumann, 8 : 095320-, 2018

4 D. Y. Kim, 88 : 3490-, 2000

5 N. T. Thanh, 305 : 432-, 2006

6 H. Nhalil, 117 : 262403-, 2020

7 N. T. Thanh, 101 : 053702-, 2007

8 T. McGuire, 11 : 1018-, 1975

9 윤석수, "평면홀 센서를 이용한 비정질 CoFeB 박막의 저주파수 투자율 측정" 한국자기학회 30 (30): 19-23, 2020

10 "https://en.wikipedia.org/wiki/Square_wave"

11 윤석수, "PHR 센서의 자체 자기장을 이용한 자성 비드 신호 탐지" 한국자기학회 29 (29): 166-170, 2019

12 윤석수, "NiFe/MnIr 박막에서 교환 바이어스의 각도 의존성 연구" 한국자기학회 27 (27): 30-34, 2017