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Sensors ◽  
2020 ◽  
Vol 20 (5) ◽  
pp. 1455
Author(s):  
Yang Zhao ◽  
Guoming Xia ◽  
Qin Shi ◽  
Anping Qiu

This paper presents a MEMS (Micro-Electro-Mechanical System) Silicon Oscillating Accelerometer (SOA) with AC (alternating current) polarization to expand its bias-instability limited by the up-converted 1/f noise from front-end transimpedance amplifier (TIA). In contrast to the conventional DC (direct current) scheme, AC polarization breaks the trade-off between input transistor gate size and white noise floor of TIA, a relative low input loading capacitance can be implemented for low noise consideration. Besides, a self-compensation technique combining polarization source and reference in automatic-gain-control (AGC) is put forward. It cancels the 1/f noise and drift introduced by the polarization source itself, which applies to both DC and AC polarization cases. The experimental result indicates the proposed AC polarization and self-compensation strategy expand the bias-instability of studied SOA from 2.58 μg to 0.51 μg with a full scale of ± 30 g, a 155.6 dB dynamic range is realized in this work.


2020 ◽  
Vol 67 (3) ◽  
pp. 1143-1148
Author(s):  
Hong-Chih Chen ◽  
Guan-Fu Chen ◽  
Jian-Jie Chen ◽  
Chuan-Wei Kuo ◽  
Kuan-Ju Zhou ◽  
...  

2018 ◽  
Vol 6 (39) ◽  
pp. 18912-18919 ◽  
Author(s):  
Kie Yong Cho ◽  
Heseong An ◽  
Xuan Huy Do ◽  
Keunsu Choi ◽  
Ho Gyu Yoon ◽  
...  

The facile tuning of the gate size and the chemical functionalization of zeolitic imidazolate framework-8 (ZIF-8) were achieved by the postsynthetic modification with 3-amino-1,2,4-triazole. The resulting amine functionalized ZIF-8 particles enabled CO2 selective adsorption and further chemical modifications.


2016 ◽  
Vol 5 (4) ◽  
Author(s):  
L. W. Smith ◽  
H. Al-Taie ◽  
A. A. J. Lesage ◽  
K. J. Thomas ◽  
F. Sfigakis ◽  
...  

2014 ◽  
Vol 53 ◽  
pp. 366-372 ◽  
Author(s):  
Pengcheng Xie ◽  
Fengxia Guo ◽  
Zhiwei Jiao ◽  
Yumei Ding ◽  
Weimin Yang

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