Adsorption–desorption noise in micromechanical resonant structures

Djurić, Z.; Jakšić, Olga; Randjelović, Danijela

doi:10.1016/s0924-4247(01)00834-2

Cited by 50 publications

(40 citation statements)

References 12 publications

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“…Their fabrication consisted of three steps [26]: printing the pseudo-reference (2b) and counter (3b) electrodes (graphite ink), printing the SPE layer, and printing the carbon working electrode. The area of fully printed sensor presented in this paper is 10 × 12 mm 2 .…”

Section: Fabrication Processes Of Our Amperometric No2 Sensorsmentioning

confidence: 99%

“…An increased level of noise or unusual shape of the noise spectra usually indicate failure mechanisms in particular devices [14][15][16][17][18]. Several authors showed that fluctuation analysis enables to extract a more selective response from the chemical sensors, [19][20][21][22][23][24], surface acoustic wave sensors, and resonant sensors [25,26].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Current Fluctuation Measurements of Amperometric Gas Sensors Constructed with Three Different Technology Procedures

Sedlák

Kuberský

Škarvada

et al. 2016

Metrology and Measurement Systems

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Electrochemical amperometric gas sensors represent a well-established and versatile type of devices with unique features: good sensitivity and stability, short response/recovery times, and low power consumption. These sensors operate at room temperature, and therefore have been applied in monitoring air pollutants and detection of toxic and hazardous gases in a number of areas . Some drawbacks of classical electrochemical sensors are overcome by the solid polymer electrolyte (SPE) based on ionic liquids. This work presents evaluation of an SPE-based amperometric sensor from the point of view of current fluctuations. The sensor is based on a novel three-electrode sensor platform with solid polymer electrolytes containing ionic liquid for detection of nitrogen dioxide − a highly toxic gas that is harmful to the environment and presenting a possible threat to human health even at low concentrations. The paper focuses on using noise measurement (electric current fluctuation measurement) for evaluation of electrochemical sensors which were constructed by different fabrication processes: (i) lift-off and drop-casting technology, (ii) screen printing technology on a ceramic substrate and (iii) screen printing on a flexible substrate.

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Section: Fabrication Processes Of Our Amperometric No2 Sensorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Current Fluctuation Measurements of Amperometric Gas Sensors Constructed with Three Different Technology Procedures

Sedlák

Kuberský

Škarvada

et al. 2016

Metrology and Measurement Systems

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“…Äëÿ íàíîñåíñîðà âèïàäêîâ³ñòü ïðîöåñó àäñîðáö³¿-äåñîðáö³¿ ïðèâîäèòü äî ïîì³òíèõ ôëóêòóàö³é ê³ëüêîñò³ àäñîðáîâàíîãî àíàë³òó â ñòàí³ ð³âíî-âàãè. Ö³ ôëóêòóàö³¿ ïðîÿâëÿþòüñÿ â âèõ³äíîìó ñèãíàë³ ñåíñîðà ³ â³äîì³ ÿê øóì àäñîðáö³¿-äå-ñîðáö³¿ [1]. Øóì àäñîðáö³¿-äåñîðáö³¿ ñïîñòåð³-ãàâñÿ åêñïåðèìåíòàëüíî [2,3].…”

Section: âñòóïunclassified

“…Ðîçãëÿäàºòüñÿ ñåíñîð íà îñíîâ³ åëåêòðîïðî-â³äíîãî ïîë³ìåðó ïîë³àí³ë³íó, äîïîâàíîãî îð-ãàí³÷íèìè êèñëîòàìè 1 . Ñåíñîðíèé ìàñèâ áóëî âèãîòîâëåíî ôîòîë³òîãðàô³÷íèì ìåòîäîì íà çîëîò³ íà ñòàíäàðòí³é ñêëÿíî-êåðàì³÷í³é ï³ä-êëàäö³.…”

Section: êîíñòðóêö³ÿ ñåíñîðàunclassified

Characteristics of a Sensor Based on Polyaniline in Stoichiometry (1 ↔ 4)

Vidybida¹,

Usenko²,

Кукла³

et al. 2014

SEMST

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Ðîçðîáëåíî ìîäåëü âçàºìîä³¿ àíàë³òó ç õåìîðåçèñòèâíèì ñåíñîðîì, çã³äíî ÿêî¿ ðåöåïòî-ðíà ìîëåêóëà çäàòíà ïðîâîäèòè ñòðóì ï³ñëÿ ïðèºäíàííÿ äî íå¿ ÷îòèðüîõ ìîëåêóë àíàë³òó. Âðàõîâàíî ïðîöåñ ïðîíèêíåííÿ àíàë³òó â îá'ºì ñåíñîðà, à òàêîae õàðàêòåðíå äëÿ âèêîðèñòà-íî¿ åêñïåðèìåíòàëüíî¿ êîíô³ãóðàö³¿ íå ìèòòºâå çàïîâíåííÿ êàìåðè, ó ÿê³é çíàõîäèòüñÿ ñåí-ñîð. Âèâåäåíî ñèñòåìó íåë³í³éíèõ äèôåðåíö³àëüíèõ ð³âíÿíü, ÿêà îïèñóº ê³íåòèêó ïðîöåñ³â ó äîñë³äaeóâàí³é ñèñòåì³ àíàë³ò-õåìîñåíñîð. Âèêîðèñòîâóþ÷è çàïðîïîíîâàíó òåîðåòè÷íó ìî-äåëü ³ åêñïåðèìåíòàëüí³ äàí³ äëÿ ñèñòåìè àöåòîí-õåìîñåíñîð íà îñíîâ³ ïîë³àí³ë³íó, çíàéäå-íî çíà÷åííÿ äëÿ íåâ³äîìèõ ðàí³øå ñòðóêòóðíî-ôóíêö³îíàëüíèõ õàðàêòåðèñòèê õåìîñåíñîðà (ïîâíà ê³ëüê³ñòü ðåöåïòîð³â ó ïîë³ìåð³, ñòðóì ÷åðåç îäèí ïðîâ³äíèé ðåöåïòîð, êîíñòàíòè øâèäêîñòåé ðåàêö³é àäñîðáö³¿ é äåñîðáö³¿ ìîëåêóë àöåòîíó ç ðåöåïòîðíèìè ìîëåêóëàìè, êîíñòàíòè øâèäêîñò³ îáì³íó àöåòîíîì ì³ae ïîë³ìåðîì ³ çîâí³øí³ì ïðîñòîðîì). Ðîçðîáëåíà òåîðåòè÷íà ìîäåëü çàäîâ³ëüíî â³äòâîðþº åêñïåðèìåíòàëüíó ê³íåòè÷íó êðèâó ñòðóìó ÷åðåç ñåíñîð â ò³é ¿¿ ÷àñòèí³, äëÿ ÿêî¿ º íàä³éí³ åêñïåðèìåíòàëüí³ äàí³.Êëþ÷åâ³ ñëîâà: àíàë³ò, õåìîðåçèñòèâíèé ñåíñîð, ïîë³àí³ë³í, êîíñòàíòè øâèäêîñòåé ðåà-êö³é, ê³íåòèêà.

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“…Fluctuations caused by monolayer AD processes in adsorption-based sensors using models assuming that the number of the analyte particles around the sensor is sufficiently high to consider the analyte pressure (or concentration) constant throughout the experiment have been analyzed in Djurić et al (2002Djurić et al ( , 2007 and Jakšić et al (2009). We will denote such models as the linear ones, because of the linear dependence of the instantaneous adsorption rate on the number of adsorbed particles.…”

Section: Introductionmentioning

confidence: 99%

A second-order nonlinear model of monolayer adsorption in refractometric chemical sensors and biosensors case of equilibrium fluctuations

Jokić

Jakšić

2016

Opt Quant Electron

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In adsorption-based chemical and biological refractometric sensors the dependence of the refractive index of the sensing area on the number of adsorbed particles is used for detection and quantification of analytes. We perform stochastic analysis of equilibrium fluctuations of the adsorbed particles number for monolayer adsorption using a nonlinear second-order model. We derive an analytical expression for the power spectral density (PSD) of the refractive index change fluctuations. Our theory is applicable to sensors operating in closed volume systems with spatially uniform analyte concentration. Our analysis of fluctuations in a benzene sensor shows a significant difference between the PSD according to the derived expression and the PSD obtained by the linear adsorption model, especially for very low amounts of analyte. The developed theory is valid in a wider range of pressures and temperatures. Since signal fluctuations determine the detection limit, the presented theoretical model is applicable as a tool for the design, optimization and characterization of practical adsorption-based refractometric sensors.

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Adsorption–desorption noise in micromechanical resonant structures

Cited by 50 publications

References 12 publications

Current Fluctuation Measurements of Amperometric Gas Sensors Constructed with Three Different Technology Procedures

Current Fluctuation Measurements of Amperometric Gas Sensors Constructed with Three Different Technology Procedures

Characteristics of a Sensor Based on Polyaniline in Stoichiometry (1 ↔ 4)

A second-order nonlinear model of monolayer adsorption in refractometric chemical sensors and biosensors case of equilibrium fluctuations

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