Improved pH Sensing Performance with Microarray ISFETs under Pulse AC Bias

Ning Luo, Di Su, Honglei Wang, Yuchen Liang, Fulin Peng, Haibo Yu, Tao Zhang, Jun Tao, Dian Zhou, Xuan Zeng, Walter Hu
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Abstract

__Biochips of 256 micro-ISFETs were made with 0.18 um CMOS processes towards pH based DNA sequencing. We implemented a pulse voltage biasing method to improve pH sensing performance. Compared to pulse DC biasing, pulse AC can achieve much better stability and higher sensitivity.
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脉冲交流偏置下微阵列isfet的pH传感性能改进
__256个微型isfet的生物芯片采用0.18 um CMOS工艺,用于基于pH的DNA测序。我们实现了一种脉冲电压偏置方法来提高pH值传感性能。与脉冲直流偏置相比,脉冲交流可以获得更好的稳定性和更高的灵敏度。
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