Michelle M Mellenthin,Jennifer L Mueller,Erick Dario León Bueno de Camargo et al.
Michelle M Mellenthin et al.
The design and performance of the ACE1 (Active Complex Electrode) electrical impedance tomography system for single-ended phasic voltage measurements is presented. The design of the hardware and calibration procedures allow for reconstructi...
Kwang Min Yu,Dean G Jarrett,Andrew D Koffman et al.
Kwang Min Yu et al.
The simulation and construction of a direct current (DC) and alternating current (AC) resistor, based on a silicon wafer, has been described and demonstrated. By applying the van der Pauw method and the Thompson-Lampard theorem, to within a...
A 2.3-ps RMS Resolution Time-to-Digital Converter Implemented in a Low-Cost Cyclone V FPGA [0.03%]
一种基于低成本Cyclone V FPGA实现的2.3ps均方根分辨率的时间数字转换器
Tengjie Sui,Zhixiang Zhao,Siwei Xie et al.
Tengjie Sui et al.
We present a nonuniform multiphase (NUMP) method to construct a high-resolution time-to-digital converter (TDC) for low-cost field-programmable gate array (FPGA) devices. The NUMP method involves a system clock being passed through a series...
Remote characterization of resonance frequency with a wirelessly powered parametric oscillator [0.03%]
采用无线供能参量振荡器的远程谐振频率识别技术
Wei Qian,Chunqi Qian
Wei Qian
It is of both fundamental importance and practical value to measure the frequency of an LC resonator beyond the near-field region, especially when the resonator is used as a standalone capacitive sensor embedded inside a closed environment....
A Compact Low-Power Current-to-Digital Readout Circuit for Amperometric Electrochemical Sensors [0.03%]
安培法电化学传感器的低功耗电流-数字转换读出电路
Heyu Yin,Ehsan Ashoori,Xiaoyi Mu et al.
Heyu Yin et al.
This paper introduces a novel compact low-power amperometric instrumentation design with current-to-digital output for electrochemical sensors. By incorporating the double layer capacitance of an electrochemical sensor's impedance model, ou...
Juan Andrés Mucarquer,Pavel Prado,María-José Escobar et al.
Juan Andrés Mucarquer et al.
Removal of artifacts induced by muscle activity is crucial for analysis of the electroencephalogram (EEG), and continues to be a challenge in experiments where the subject may speak, change facial expressions, or move. Ensemble empirical mo...
Comparison of Multiple Methods for Obtaining PΩ Resistances with Low Uncertainties [0.03%]
低不确定度PΩ电阻获取的多种方法比对
Kwang Min Yu,Dean G Jarrett,Albert F Rigosi et al.
Kwang Min Yu et al.
Capabilities for high resistance determinations are essential for calibration of currents below 1 pA, as typically requested in several applications, including semiconductor device characterization, single electron transport, and ion beam t...
Comparison between NIST Graphene and AIST GaAs Quantized Hall Devices [0.03%]
NIST石墨烯与AIST GaAs量子霍尔器件比对研究
Takehiko Oe,Albert F Rigosi,Mattias Kruskopf et al.
Takehiko Oe et al.
Several graphene quantized Hall resistance (QHR) devices manufactured at the National Institute of Standards and Technology (NIST) were compared to GaAs QHR devices and a 100 Ω standard resistor at the National Institute for Advanced Indus...
Magnetic Source Imaging Using a Pulsed Optically Pumped Magnetometer Array [0.03%]
一种使用脉冲光学泵浦磁力计阵列进行磁场源成像的方法
Amir Borna,Tony R Carter,Paul DeRego et al.
Amir Borna et al.
We have developed a pulsed optically pumped magnetometer (OPM) array for detecting magnetic field maps originated from an arbitrary current distribution. The presented magnetic source imaging (MSI) system features 24 OPM channels, has a dat...
Josephson Arbitrary Waveform Synthesizer as a Reference Standard for the Measurement of the Phase of Harmonics in Distorted Waveforms [0.03%]
约瑟夫森任意波形合成器作为测量畸变波形中谐波相位的标准参考
Dimitrios Georgakopoulos,Ilya Budovsky,Samuel P Benz et al.
Dimitrios Georgakopoulos et al.
We have used the Josephson arbitrary waveform synthesizer (JAWS) to provide traceability for the phase of the harmonics, relative to their fundamental frequency, of a distorted waveform. For distorted waveforms with rms values from 0.154 to...