Article | 01-March-2012
A flexible sensor with conducting polyaniline layer for detecting pH value based on the impedance measurement is fabricated and demonstrated in this study. The pH sensor consists of an interdigital electrode array on a flexible printed circuit and a thin-film polyaniline as the sensing layer. As the conductivity of polyaniline depends on the redox state, the impedance change of the polyaniline after it has reacted with different pH value solutions works as the sensing mechanism. In order to
Cheng-Hsin Chuang,
Hsun-Pei Wu,
Cheng-Ho Chen,
Peng-Rong Wu
International Journal on Smart Sensing and Intelligent Systems, Volume 5 , ISSUE 1, 1–13
Article | 01-June-2016
This paper presents an optimization of a single cell electrical model, based on Maxwell’s mixture Theory, applied to flow cytometry coupled to impedance spectroscopy. It is based on the discretization of the measurement area into a square reference volume, centered between micro-electrodes, and fixed impedance areas. The first one represents the sensing area, the one impacted by cell presence during measurement, and the second one, all other areas that contribute to global measured impedance
J. Claudel,
M. Nadi,
O. Elmazria,
D. Kourtiche
International Journal on Smart Sensing and Intelligent Systems, Volume 9 , ISSUE 2, 526–536
Article | 01-December-2015
Uncalibrated visual servoing based on SVR-Jacobian estimator is proposed in unknown environment. Multiple support vector regression (SVR) machines are used to estimate the Jacobian matrix of images，and the nonlinear mapping between the image features of the curved line and the robot joint angle is constructed, uncalibrated robot impedance control can be carried out．Image Jacobian matrix expression with Gaussian kernel is put forward, the effectiveness of the presented approach is verified by
Li Erchao,
Li Zhanming,
He Junxue
International Journal on Smart Sensing and Intelligent Systems, Volume 8 , ISSUE 4, 2159–2174
Research Article | 15-February-2020
In this paper, we present an alternative method for assessing the sensitivity of lead zirconate titanate (PZT) piezoceramics for damage detection in structural health monitoring (SHM) systems based on the electromechanical impedance (EMI) principle. An assessment of the sensitivity is obtained experimentally using the pencil lead break (PLB) method, which is frequently used in acoustic emission (AE) systems. Tests were carried out on an aluminum beam, and the results show a clear relationship
Vinicius Augusto Dare de Almeida,
Fabricio Guimarães Baptista
International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–5
Research Article | 13-December-2017
The response of an anodic aluminum oxide (AAO) nanoporous humidity sensor to an organic vapor such as methanol is presented in this paper. Sensors constructed at Northern Illinois University were exposed to various organic vapors. The characteristic response of the sensor to various vapor dilutions was analyzed using real and complex impedance parameters.
Christopher Radzik,
G. Martin Kocanda,
Michael Haji-Sheikh,
David S.Ballantine
International Journal on Smart Sensing and Intelligent Systems, Volume 1 , ISSUE 2, 470–479
Research Article | 15-February-2020
This paper presents a micro-biosensor based on Electrical Bio-Impedance Spectroscopy (EBIS), applied to blood cells characterization and diagnosis. This sensor uses microfluidic flow, coupled to EBIS system to perform cell by cell measurements at high flow rate, up to several hundred cells per second. Two devices were realized with different materials, SU_8 resin and polydimethylsyloxane PDMS to structure the microchannel. PDMS device stand higher pressure than SU_8, permitting to improve
J. Claudel,
M. Nadi,
O. Elmazria,
D. Kourtiche
International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–5
Article | 01-June-2015
Based on the propagation rules of electromagnetic waves in metal conductors, this paper analyzes the characteristics of electric field and magnetic field of internal conductors. Then the complex power of electromagnetic wave is calculated. The impedance calculation formula of metal conductor is derived. Moreover, in order to identify and detect defects of metal casing, an alternating current impedance measuring method for the metal casing is proposed by changing the alternating current
Yinchuan WU,
Baolong GUO
International Journal on Smart Sensing and Intelligent Systems, Volume 8 , ISSUE 2, 1261–1283
Article | 05-June-2013
two parallel needle moisture sensors has been widely used in Soil moisture detection equipment, for example, frequency domain (FD), time domain reflectometry (TDR) and standing wave ratio (SWR) measurement. The design of probe‘s port impedance is key technology parameters to soil moisture sensor. In this study, according to the relationships between the length and impedance characteristics of terminal open and closed state probe were presented based on two-pin probe structure of parallel
Zhao Yandong,
Nie Mingjun
International Journal on Smart Sensing and Intelligent Systems, Volume 6 , ISSUE 3, 849–866
Research Article | 15-February-2020
Patients suffering from the acute respiratory distress syndrome (ARDS) requires thoracic electrical impedance tomography (EIT) for the monitoring their conditions ranging from dynamic shifting of body fluids to lung aeration right at the bedside. More objectively, EIT-derived numeric parameters would help the physician to evaluate the state of the lung. Thus, here we have performed a Finite Element Method based simulation study for monitoring the condition of lungs and heart of ARDS
Deborshi Chakraborty,
Madhurima Chattopadhyay
International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–5
Research Article | 15-February-2020
NEMCA known for the increasing the catalytic activity/selectivity of the gas exposed electrodes was investigated for the potentiometric zirconia oxygen sensor activation. Electrochemical promotion of O2-sensors with Pt-cermet electrodes aged in the field was significant with up to 5 times in the impedance reduction. Stability test on the NEMCA activated O2-sensors was showing just a minor impedance increase. Sensor response time was reduced by NEMCA effect by ~5-10% with up to 3 times signal
Pavel Shuk,
Robert Jantzt
International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–4
Research Article | 02-November-2017
In this work, it has been attempted to characterize a new type of impedance sensor called constant phase element (CPE) sensor; which has microporous PMMA- lm coating on the electrode surface. It has been shown that the `constant phase angle (CPA)' behaviour is primarily due to the porous structure of the electrode surface. And the phase angle at the output of the sensor changes with thickness variation of the PMMA coating and ionic property of the medium in which the sensor is dipped in. The
Karabi Biswas,
Litty Thomas,
Sourabh Chowdhury,
Basudam Adhikari,
Siddhartha Sen
International Journal on Smart Sensing and Intelligent Systems, Volume 1 , ISSUE 4, 922–939
Article | 01-June-2016
A circuit design with bespoke control software is described which has delivered precision in electrical impedance measurements of ~ 10ppm, after calibration. It is low-cost and applicable to jobs such as direct measurement using a sensor whose resistance changes with some physical quantity of interest; calibration at end of line in the production of such sensors; or calibration of equipment which may be out of warranty. It was developed using resistance temperature detectors (RTDs).
Ciaran Doyle,
Dr Daniel Riordan,
Dr Joseph Walsh
International Journal on Smart Sensing and Intelligent Systems, Volume 9 , ISSUE 2, 509–525
Research Article | 15-February-2020
In the study, a novel micro impedance inclinometer is presented, consisting of a glass substrate, Cr electrodes and a mercury pendulum. The output signal of the proposed inclinometer is read from the moving metal pendulum based on an LED array measurement scheme. A mercury pendulum mass is used for the inclinometer. The adhesion between the liquid metal and the substrate surface is reduced by etching or sandblasting the substrate surface. Experimental results show the developed inclinometer has
Chia-Yen Lee,
Lung-Ming Fu
International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–5
Research Article | 15-February-2020
Gold nanopillars have been successfully fabricated on top of interdigitated gold electrodes deposited on a Pyrex substrate and these were used for cytotoxicity monitoring on immortalized cells through the electrochemical impedance spectroscopy technique. These nanopillars were fabricated via contact metal deposition. E-beam lithography was used to define the pattern of nanopillars with dimensions of 150nm diameter and 500nm of distance between their edges in a honeycomb-like structure. These
Walter Messina,
Michelle Fitzgerald,
Una Crowley,
Eric Moore
International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–7
Research Article | 01-June-2017
Two controllers are proposed in this paper. These controllers have been designed and implemented on the rectifier and quasi impedance-source inverter (QZSI) in the wind energy conversion system based on permanent magnet synchronous generator (PMSG). Model based predictive control strategy (MBPC) has been used at the proposed design for both controllers. Control of parameters such as load current, inductor current and capacitor voltage are the major aim of design of predictive controllers; hence
Hamed Javaheri Fard
International Journal on Smart Sensing and Intelligent Systems, Volume 10 , ISSUE 2, 451–490
research-article | 02-May-2019
Introduction
Most commercial UHF RFID patch antennas are either made from thick substrate (usually 1/10th of the wavelength) or has a stacked patch configuration to achieve the necessary operating bandwidth. This paper presents an unconventional and inexpensive way to enhance the impedance bandwidth of a thin substrate (1/35th of the wavelength) microstrip fed patch antenna. The 902–928 MHz RFID band was chosen for demonstration as it is the widest RFID bandwidth allotted by Federal
Prabakar Parthiban
International Journal on Smart Sensing and Intelligent Systems
, Volume 12 , ISSUE 1, 1–8
Research paper | 13-December-2017
found to be almost ten times compared to previous reports of macroporous silicon sensor where contacts are taken from the backside and also in comparison to interdigited electrode array structure. The improvement and variation of sensitivity with frequency for different solutions has been explained taking into account the dependence of double layer impedance with frequency, distributed RC networks of the macroporous silicon structure, ionic conductivity of the solution and effects of ion sizes
C. RoyChaudhuri,
S. Gangopadhyay,
R. DevDas,
S.K. Datta,
H. Saha
International Journal on Smart Sensing and Intelligent Systems, Volume 1 , ISSUE 3, 638–658
Research Article | 15-February-2020
The work is dedicated to the magneto-optical Kerr effect (MOKE) study of the magnetization reversal in the microwire in the presence of super high frequency (SHF) circular magnetic field. This study is important for elucidation of functioning of sensor based on giant magneto-impedance (GMI) effect. Magnetic domains images have been obtained using MOKE polarizing microscopy. Hysteresis loops were obtained as a result of images processing. It was found that SHF magnetic field induces strong
Alexander Chizhik,
Julian Gonzalez,
Arcady Zhukov,
Andrzej Stupakiewicz,
Andrzej Maziewski
International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–4
Research Article | 01-September-2017
Single and Dual feed Antennas with dual frequencies have been demonstrated. Varactor diodes are used for independent tuning. The PIFA (Planar Inverted F-Antenna) has two frequencies from 0.7 to 1.1 GHz and from 1.7 to 2.3GHz. Impedance match of about -10dB an isolation greater than 13dB is obtained. The single feed antenna can be tuned from 1.2 to 1.6GHz and 1.6 to 2.3 GHz. The antenna volumes are 63x100x3.15 mm3 with relative permittivity is 3.55 substrates. The efficiency varies from 25% to
S Sankaranarayanan,
M Anto Bennet,
B. Deepa,
A. Banu,
S. Gayathri
International Journal on Smart Sensing and Intelligent Systems, Volume 10 , ISSUE 5, 87–100
Research paper | 01-December-2011
This paper reports wireless sensing of open loop micro inductors parameters i.e. distributed capacitance, inductance, resistance and Q factor in presence uniform magnetic fields generated by Helmholtz coils pair. A frequency dependent analytical model is developed which models the inductively coupled system including the effects generated by the presence of test micro coil in uniform magnetic field. Micro inductor parameters are extracted from the remotely measured impedance signal and compared
A. Yousaf,
F.A. Khan,
Prof. Dr. L.M Reindl
International Journal on Smart Sensing and Intelligent Systems, Volume 4 , ISSUE 4, 527–546
Research Article | 01-September-2014
A digital moisture measuring instrument based on phase angle measuring technique with porous silicon (PSi) or porous alumina (PA) as capacitive moisture sensor is proposed. The proposed technique can measure digitally the phase angle change of capacitive impedance of porous silicon or porous alumina sensor due to change in moisture concentration in terms of clock pulses. Analysis shows that the proposed circuit leads to higher precision by minimizing the errors caused by
TARIKUL ISLAM,
MD. FIROZ A,
KHAN, S. A. KHAN,
H. SAHA
International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 3, 1059–1076
Article | 24-April-2018
Low-voltage power line channel characteristics are designed for low voltage power line carrier communication system foundation. The paper used to design and develop a system for measuring the electrical characteristics of the low voltage power line communication network used to do high, including the noise characteristics of the input impedance characteristics, signal attenuation characteristics and systems, etc., a lot of experimental research. On this basis, the establishment of a low-voltage
Li songnong,
Liu Dong,
Sun Hongliang,
Hou Xingzhe,
Zheng ke,
Meng Xin,
Luo Zhishu
International Journal of Advanced Network, Monitoring and Controls, Volume 2 , ISSUE 4, 102–105
Article | 12-April-2018
Ye Jun,
Li songnong,
Sun Hongliang,
Hou Xingzhe
International Journal of Advanced Network, Monitoring and Controls, Volume 2 , ISSUE 3, 125–128
Research paper | 13-December-2017
In this paper, some design issues of one of the planar-guided media known as Microstrip line has been presented. The main purpose of this paper is to study the fundamental transmission properties of the microstrip line in view of varying the length, materials used for device formation/fabrication and highest frequency of operation. The paper is mainly divided in to two portions; first portion deals with theoretical portion because, it is necessary to know how the characteristic impedance, phase
Savita Maurya
International Journal on Smart Sensing and Intelligent Systems, Volume 3 , ISSUE 1, 88–93
Article | 01-December-2012
Haifa Mehdi,
Olfa Boubaker
International Journal on Smart Sensing and Intelligent Systems, Volume 5 , ISSUE 4, 1044–1062
Research paper | 15-February-2020
K. Wang,
S. Tajima,
Y. Asano,
Y. Okuda,
N. Hamada,
C. Cai,
T. Uchiyama
International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–4
Research Article | 15-February-2020
Asif I. Zia,
S.C. Mukhopadhyay,
P.L. Yu,
I. H. Al-Bahadly,
C. Gooneratne,
Jǘrgen Kosel
International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–7