FLEXIBLE PH SENSOR WITH POLYANILINE LAYER BASED ON IMPEDANCE MEASUREMENT

Cheng-Hsin Chuang/ Hsun-Pei Wu/ Cheng-Ho Chen/ Peng-Rong Wu

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 obta(..)

DOI: 10.21307/ijssis-2017-467

Published Online: 01-March-2012

MODELING AND CONTROL OF BALL AND BEAM SYSTEM USING MODEL BASED AND NON-MODEL BASED CONTROL APPROACHES

Mohammad Keshmiri/ Ali Fellah Jahromi/ Abolfazl Mohebbi/ Mohammad Hadi Amoozgar/ Wen-Fang Xie

The ball and beam system is a laboratory equipment with high nonlinearity in its dynamics. The aims of this research are to model the ball and beam system considering nonlinear factors and coupling effect and to design controllers to control the ball position. The LQR is designed considering two Degrees-of-Freedom and coupling dynamics. The parameters of the LQR are tuned using Genetic Algorithm (GA). Jacobian linearization method is used to linearize the system around operating-point. Due to th(..)

DOI: 10.21307/ijssis-2017-468

Capacitive Sensor Design Utilizing Conformal Mapping Methods

N. Eidenberger/ B. G. Zagar

In this work we demonstrate the advantages of conformal mapping methods for the design of capacitive sensor setups. If the setups are modeled appropriately, the respective Laplace equa-tions can be solved utilizing conformal mapping methods. These methods yield the equations de-scribing the electric field of the sensor setups. The field equations contain the distinct geometric properties of the sensor setups. An in depth analysis of these equations permits the optimization of the sensor setups w(..)

DOI: 10.21307/ijssis-2017-469

Published Online: 01-March-2012

SYNTHESIS OF ZnO NANORODS BY HYDROTHERMAL METHOD FOR GAS SENSOR APPLICATIONS

Sarika D. Shinde/ G. E. Patil/ D. D. Kajale/ D. V. Ahire/ V. B. Gaikwad/ G. H. Jain

ZnO nanorods with different sizes and shapes have been successfully synthesized via a simple hydrothermal route, using zinc acetate and Cetyltriammonium bromide (CTAB) as the reactants. The thick films of as prepared ZnO were prepared by screen-printing technique in desired pattern. The films are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The gas sensing properties of the materials have been investigated for various in(..)

DOI: 10.21307/ijssis-2017-470

Published Online: 01-March-2012

Humidity sensor based on silver nanoparticles embedded in a polymeric coating

Pedro J. Rivero/ Aitor Urrutia/ Javier Goicoechea/ Francisco J. Arregui/ Ignacio R. Matías

In this work, it is presented a novel optical fiber humidity sensor based on silver nanoparticle-loaded polymeric coatings built onto an optical fiber core. The polymeric film was fabricated using the Layer-by-Layer assembly technique. The silver nanoparticles (Ag NPs) were characterized using transmission electron microscopy (TEM and UV-VIS spectroscopy. A Localized Surface Plasmon Resonance (LSPR) attenuation band is observed when the thickness of the coating increases, and showed a very good (..)

DOI: 10.21307/ijssis-2017-471

Published Online: 01-March-2012

STUDY ON LIGHT RESPONSE OF PACHIRA AQUATICA’S LEAF VIA SURFACE PLASMON RESONANCE TECHNIQUE

Yu-Chu M. Li/ Wei-Chin Chang/ Chao-Ming Huang/ Tsung-Yen Tsai/ Yen-Hong A. Chen

Light response of a pachira aquatica’s leaf at room temperature was investigated with a strong p-wave electromagnetic field by utilizing a surface plasmon resonance (SPR) based sensor technique of angular interrogation method for biological and chemical sensing. The essential principle of SPR biosensing is based on measurement of the change regarding leaf’s microstructure against the sensor’s metallic surface owing to the interaction with the strong p-wave electromagnetic field. The test result (..)

DOI: 10.21307/ijssis-2017-472

Published Online: 01-March-2012

FEEDFORWARD CONTROL OF TEMPERATURE-INDUCED HEAD SKEW FOR HARD DISK DRIVES

Yong Xiao/ Chi Zhang/ Xiaoyu Ge/ Peiqi Pan

In hard disk drives (HDDs), head skew error among multiple heads is calibrated during manufacturing process, and will be implemented prior to head switching seeks. In operational environment, additional head skew deviation due to temperature drift may be observed, which could introduce heavy handling burden for feedback controller along with unacceptable noise to HDD customers. Therefore, a thorough analysis of head skew variation against temperature is carried out in this paper. With help of ac(..)

DOI: 10.21307/ijssis-2017-473

Published Online: 01-March-2012

A REVIEW OF ARTIFICIAL FISH SWARM OPTIMIZATION METHODS AND APPLICATIONS

Mehdi Neshat/ Ali Adeli/ Ghodrat Sepidnam/ Mehdi Sargolzaei/ Adel Najaran Toosi

The Swarm Intelligence is a new and modern method employed in optimization problems. The Swarm Intelligence method is based on the en masse movement of living animals like birds, fishes, ants and other social animals. Migration, seeking for food and fighting with enemies are social behaviors of animals. Optimization principle is seen in these animals. The Artificial Fish Swarm Optimization (AFSA) method is one of the Swarm Intelligence approaches that works based on the population and stochastic(..)

DOI: 10.21307/ijssis-2017-474

MONITORING OF NITRATES AND PHOSPHATES IN WASTEWATER: CURRENT TECHNOLOGIES AND FURTHER CHALLENGES

O. Korostynska/ A. Mason/ A. Al-Shamma’a

Consumers expect water supply companies to deliver safe drinking water that meets both health quality standards and aesthetic requirements such as colour, turbidity, taste and odour. Current water quality assessment methods of these parameters, which form the basis for sound water resources management, are mainly laboratory based, require fresh supply of chemicals, trained staff and are time consuming. Real-time water quality monitoring is essential for National and International Health and Safe(..)

DOI: 10.21307/ijssis-2017-475

Published Online: 01-March-2012

A REVIEW OF SENSING AND DISTRIBUTED DETECTION ALGORITHMS FOR COGNITIVE RADIO SYSTEMS

Ramanarayanan Viswanathan/ Babak Ahsant

Optimized spectrum sensing using distributed detection techniques for secondary user spectrum access is becoming important in Cognitive Radio (CR) systems, which have been proposed to utilize the available frequency spectrum more efficiently. For achieving best performance and ensuring minimal acceptable interference to spectrum owners, it is important to accurately sense and detect the presence or absence of primary licensed users. For this purpose, the solutions learned within the framework of(..)

DOI: 10.21307/ijssis-2017-476

Published Online: 01-March-2012

AN AIR QUALITY MONITORING SYSTEM FOR URBAN AREAS BASED ON THE TECHNOLOGY OF WIRELESS SENSOR NETWORKS

Jen-Hao Liu/ Yu-Fan Chen/ Tzu-Shiang Lin/ Chia-Pang Chen/ Po-Tang Chen/ Tzai-Hung Wen/ Chih-Hong Sun/ Jehn-Yih Juang/ Joe-Air Jiang

Air pollution is one of environmental issues that cannot be ignored. The heavy transportation and urbanization result in the air pollutants concentrated in certain areas. Inhaling pollutants for a long time causes damages in human health. Traditional air quality monitoring methods, such as building air quality monitoring stations, are typically expensive. In addition, monitoring stations are generally less densely deployed and provide low resolution sensing data. This paper proposes an urban air(..)

DOI: 10.21307/ijssis-2017-477

Published Online: 01-March-2012

DEVELOPMENT OF SEMI-QUANTITATIVE ANALYTICAL SYSTEM FOR METAL NANOPARTICLE INK USING LASER-INDUCED BREAKDOWN SPECTROSCOPY

S. Ikezawa/ M. Wakamatsu/ T. Ueda

This paper describes the semi-quantitative analysis of metal nanoparticle ink using laser-induced breakdown spectroscopy (LIBS). LIBS can be used to obtain information about the density and chemical composition of silver particles or copper particles, even ultrafine particles. Metal particles have been attracting much attention because of their increased use in new micro-nano technologies. In this work, LIBS was used as a fine metal particle measurement system for nanometallic materials used in (..)

DOI: 10.21307/ijssis-2017-478

Published Online: 01-March-2012

OXYGEN SENSOR WITH ADVANCED OXIDE ELECTRODE MATERIALS

P. Shuk/ R. Jantz/ H.-U. Guth

Calcium doped lanthanum and yttrium manganite electrode materials with oxygen deficiency and low polarization resistance (<30W*cm2 at 600°C) were tested in new advanced electrochemical sensor for the oxygen measurements. Oxygen sensor with oxide electrodes was showing fast response (t95~5s at 600°C), good reproducibility (±0.04% O2) and long term stability at different oxygen concentration.

DOI: 10.21307/ijssis-2017-479

Published Online: 01-March-2012

HSCLOUD: CLOUD ARCHITECTURE FOR SUPPORTING HOMELAND SECURITY

M. Fazio/ M. Paone/ A. Puliafito/ M. Villari

Governmental institutions all over the world are trying to increase the level of security of their countries emphasizing the usage Information Technology solutions. We believe that Cloud Computing may strongly help Homeland Security, since it offers a very flexible support for organizing and managing heterogeneous systems, providing huge amount of processing, storing and sensing resources. In this work we introduce a new Cloud architecture able to virtualize different types of sensing environmen(..)

DOI: 10.21307/ijssis-2017-480

Published Online: 01-March-2012

EFFECT OF ANNEALING ON GAS SENSING PERFORMANCE OF NANOSTRUCTURED ZnO THICK FILM RESISTORS

Sarika D. Shinde/ G. E. Patil/ D. D. Kajale/ V. G. Wagh/ V. B. Gaikwad/ G. H. Jain

ZnO nano-particles have been synthesized by simple chemical route using a starting solution consisting of zinc acetate and citric acid as a surfactant agent. The structural properties of the prepared ZnO nano-particles annealed at different temperatures have been characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses. The XRD patterns show ZnO-wurtize phase in the nano-powders, and size of crystals increases by increasing the annealing temperatures. The TEM (..)

DOI: 10.21307/ijssis-2017-481

Published Online: 01-March-2012