1,249 Hits in 6.8 sec

Sensing of single electrons using micro and nano technologies: a review

Jubayer Jalil, Yong Zhu, Chandima Ekanayake, Yong Ruan
2017 Nanotechnology  
based vibrating-reed sensors.  ...  Resonant electrometer 3.1 NEMS based electrometer 3.2 MEMS based electrometer 4. Vibrating-reed electrometer 5.  ...  In the design, two electrostatically weakly coupled DETF resonators were used as a charge sensing element.  ... 
doi:10.1088/1361-6528/aa57aa pmid:28273047 fatcat:ccdihnguzveyloylb5xkwgbpbe

A force sensor based on three weakly coupled resonators with ultrahigh sensitivity

Chun Zhao, Graham S. Wood, Jianbing Xie, Honglong Chang, Suan Hui Pu, Michael Kraft
2015 Sensors and Actuators A-Physical  
A force sensor based on three weakly coupled resonators with ultrahigh sensitivity, Sensors & Actuators: A. Physical (2015), http://dx.  ...  Abstract A proof-of-concept force sensor based on three degree-of-freedom (DoF) weakly coupled resonators was fabricated using a silicon-on-insulator (SOI) process and electrically tested in 20µTorr vacuum  ...  Three DC voltages were used in the experiment: a) a fixed coupling voltage of V c = 12V was applied to resonators 1 and 3, while resonator 2 was grounded, 300 hence the resonators were electrostatically  ... 
doi:10.1016/j.sna.2015.05.011 fatcat:tdb5zhsraje5vl26qtulgsnyce

Micromachined Accelerometers with Sub-µg/√Hz Noise Floor: A Review

Chen Wang, Fang Chen, Yuan Wang, Sina Sadeghpour, Chenxi Wang, Mathieu Baijot, Rui Esteves, Chun Zhao, Jian Bai, Huafeng Liu, Michael Kraft
2020 Sensors  
Such sensors can mainly be categorized into: (i) micromachined accelerometers with a low spring constant; (ii) with a large proof mass; (iii) with a high quality factor; (iv) with a low noise interface  ...  Different types of micromachined accelerometers with a noise floor below 1 µg/√Hz are discussed.  ...  When acceleration acts on a proof mass, differential electrostatic stiffness perturbations will be applied to weakly coupling resonators (WCR).  ... 
doi:10.3390/s20144054 pmid:32708191 fatcat:rtutnvh5wjf75j3v2y4jpbaqma

High-$Q$ Tunable Microwave Cavity Resonators and Filters Using SOI-Based RF MEMS Tuners

Xiaoguang Liu, Linda P. B. Katehi, William J. Chappell, Dimitrios Peroulis
2010 Journal of microelectromechanical systems  
His research group uses electromagnetic analysis, unique processing of materials, and advanced design to create novel microwave components.  ...  Integrated electrostatically-actuated thin diaphragms are used for the first time for tuning the frequency of the resonators/filters.  ...  The resonator is intentionally designed to be weakly coupled for more accurate extraction of the resonant frequency and Q u .  ... 
doi:10.1109/jmems.2010.2055544 fatcat:4iccdf7io5cyjcyyclgjvbx7bm

Jerk and Current Limited Flatness-based Open Loop Control of Foveation Scanning Electrostatic Micromirrors

Richard Schroedter, Klaus Janschek, Thilo Sandner
2014 IFAC Proceedings Volumes  
The generation of high accuracy scanning trajectories with scene dependent variable slope is realized by a flatness-based open loop control scheme.  ...  Jerk limited trajectories are introduced for reduction of residual oscillations and their impact on scanning trajectory properties is expressed by design formulas.  ...  CONCLUSIONS This paper presented performance improvements for open loop electrostatic micromirror control using a flatness-based trajectory design with limited jerk and limited drive currents.  ... 
doi:10.3182/20140824-6-za-1003.02566 fatcat:jygqinryhvcjrh3vtxz7izekgu

Nanoscale Non-Destructive Ferroelectric Characterization with Non-Contact Heterodyne Electrostrain Force Microscopy [article]

Qibin Zeng, Qicheng Huang, Hongli Wang, Caiwen Li, Zhen Fan, Deyang Chen, Yuan Cheng, Kaiyang Zeng
2021 arXiv   pre-print
electrostatic force effect.  ...  It has been unambiguously demonstrated that NC-HEsFM can operate on multiple eigenmodes to perform ideal high-resolution ferroelectric domain mapping, standard ferroelectric hysteresis loop measurement  ...  Li Lu (NUS) for great support of the SPA400 SPM in this study. Author Contributions  ... 
arXiv:2105.03088v1 fatcat:5vhvswgbpbdj5ankauoiz5btja

An envelope model to describe the sensor dynamics of vibratory gyroscopes

Markus Egretzberger, Andreas Kugi, Ulrich Schmid
2009 Smart Sensors, Actuators, and MEMS IV  
In this case the primary mode turns out to behave like a weakly damped second order system that is harmonically excited close to the resonance frequency, thus yielding a large Fourier coefficient Q 2,S  ...  Therefore, Sec. 4 is focused on the calculation of the steady state response based on the envelope model.  ...  ACKNOWLEDGMENTS This work was funded by the German BMBF as part of the EURIPIDES project RESTLES (project no. V3EUR015).  ... 
doi:10.1117/12.821705 fatcat:blnceyxtgnca7pc36qgqddtoj4

Coupling between Residues on S4 and S1 Defines the Voltage-Sensor Resting Conformation in NaChBac

Tzur Paldi, Michael Gurevitz
2010 Biophysical Journal  
A double-mutant cycle analysis of E43 and R1 or R2 suggested changes in pairing during channel activation, implying that the interaction of E43 with R1 stabilizes the voltage sensor in its closed/available  ...  The voltage sensor is a four-transmembrane helix bundle (S1-S4) that couples changes in membrane potential to conformational alterations in voltage-gated ion channels leading to pore opening and ion conductance  ...  Guy for providing the coordinates of the NaChBac models shown in Fig. 6 and for his critical reading of the manuscript, and A.  ... 
doi:10.1016/j.bpj.2010.04.053 pmid:20643063 pmcid:PMC2905116 fatcat:h7473avatnaejnrix6jjq2pp7a

Power Handling of Electrostatic MEMS Evanescent-Mode (EVA) Tunable Bandpass Filters

Xiaoguang Liu, Linda P. B. Katehi, William J. Chappell, Dimitrios Peroulis
2012 IEEE transactions on microwave theory and techniques  
This paper presents the rst theoretical and experimental study on the power handling capabilities of electrostatically tunable MEMS cavity lters.  ...  factor ( ) of the evanescent-mode (EVA) resonators.  ...  In a weakly coupled resonator, the is suf ciently large so that the term can Structural Simulator (HFSS) model of the resonator to the measured initial resonant frequency [2] .  ... 
doi:10.1109/tmtt.2011.2176136 fatcat:rixd4xw75rdnra425tbqzc7em4

Compact vibration isolation and suspension for Australian International Gravitational Observatory: Local control system

Jean-Charles Dumas, Pablo Barriga, Chunnong Zhao, Li Ju, David G. Blair
2009 Review of Scientific Instruments  
A feedback method is presented, which is expected to improve the residual motion at 1 Hz by more than one order of magnitude.  ...  New concepts in vibration isolation including self-damping, Euler springs, LaCoste springs, Roberts linkages, and double preisolation require novel sensors and actuators.  ...  This project is part of the research program of the Australian Consortium for Interferometric Gravitational Astronomy.  ... 
doi:10.1063/1.3250861 pmid:19947744 fatcat:lmtauirpavethpizakukh4gkea

2020 Index IEEE Transactions on Electromagnetic Compatibility Vol. 62

2020 IEEE transactions on electromagnetic compatibility (Print)  
., see Attaran, A., TEMC Feb. 2020 186-193 Jiang, L., see Zhang, Y., TEMC Aug. 2020 1443-1450 Jiang, L.J., see Li, P., TEMC Oct. 2020 2217-2226 Jiang, R., see 1200-1208 Jin, J., see Min, Q., TEMC  ...  2585-2594 Jing, F., see Wen, F., 1859-1868 Jo, C., see Park, J., TEMC Feb. 2020 285-290 Jobava, R., see 2196-2208 Jobava, R.G., see Rezaei, H., 1628-1636 Jones, C.E., see Lu, H., 1619-1627 Jossen, A.  ...  ., +, TEMC Feb. 2020 258-265 Sensors Machine Learning-Based Lightning Localization Algorithm Using Lightning-Induced Voltages on Transmission Lines.  ... 
doi:10.1109/temc.2021.3049587 fatcat:rbv353q2ifbnhdsy763jbndcs4

Micrometer-Scale Magnetic-Resonance-Coupled Radio-Frequency Identification and Transceivers for Wireless Sensors in Cells

Xiaolin Hu, Kamal Aggarwal, Mimi X. Yang, Kokab B. Parizi, Xiaoqing Xu, Demir Akin, Ada S. Y. Poon, H.-S. Philip Wong
2017 Physical Review Applied  
Using magnetic resonant coupling, the system shows resonance shifts when the RFID is present and also when the RFID loading capacitance changes.  ...  We report the design, analysis and characterization of a three-inductor radio-frequency identification (RFID) and transceiver (TRX) system for potential applications in individual cell tracking and monitoring  ...  To establish design intuition, we need a simple closed-form formula for the resonant frequencies in terms of the known impedances.  ... 
doi:10.1103/physrevapplied.8.014031 fatcat:tvdyeivqpnbvlfkuhacosbpfdm

Wireless Power Transfer Near-field Technologies for Unmanned Aerial Vehicles (UAVs): A Review

Anh Le, Linh Truong, Toan Quyen, Cuong Nguyen, Minh Nguyen
2020 EAI Endorsed Transactions on Industrial Networks and Intelligent Systems  
There is a trade-off between the weight of the UAVs or their batteries and their flying time.  ...  Wireless power transfer (WPT) techniques are being popular currently with the development of midrange wireless powering and charging technology to gradually substitute the need for wired devices during  ...  In order to adapt the high frequency and moderate voltage operation, Mitchell Kline et al. in [62] designed a CCWPT system using series resonances and automatic tuning loops.  ... 
doi:10.4108/eai.31-1-2020.162831 fatcat:slwlfufwyfaabkdbxlqmjbevri

Electronic Sensor Interfaces With Wireless Telemetry [chapter]

Ifana Mahbub, Farhan Quaiyum, Md Sakib Hasan, Syed Kamrul Islam
2015 Advances in Bioengineering  
Schematic of basic inductive link based on series parallel resonance. Figure 10 illustrates a basic inductive link based on series-parallel resonance.  ...  In this design, resonant inductive coupling was used to excite the secondary side of a transformer.  ... 
doi:10.5772/59754 fatcat:wh4xmg7zdbf55hsabfaerylxoi

In memory of Professor Ali H. Nayfeh

Giuseppe Rega, Mohammed F. Daqaq, Muhammad Hajj, Anil Bajaj
2019 Nonlinear dynamics  
A novel method in the design of controllers to drive general nonlinear systems to desired periodic or quasiperiodic motions is presented by Sharma and Sinha in a paper that was the last one co-authored  ...  The latter shows limitations in properly capturing the microsystem dynamics, especially close to pull-in instability and when exciting with AC voltage near resonance.  ... 
doi:10.1007/s11071-019-05422-7 fatcat:dljkwjijynbqvc2kjopz7otrge
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