Effect of various flow rate on current fluctuations of amperometric gas sensors
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F19%3APU130482" target="_blank" >RIV/00216305:26220/19:PU130482 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/49777513:23220/19:43953384
Výsledek na webu
<a href="https://www.sciencedirect.com/science/article/pii/S0925400518321257" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0925400518321257</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.snb.2018.12.006" target="_blank" >10.1016/j.snb.2018.12.006</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Effect of various flow rate on current fluctuations of amperometric gas sensors
Popis výsledku v původním jazyce
The flow rate of analyte is a key parameter in the measurement system that influences response of gas sensors. The paper focuses on possibility of improved gas detection by modulation of analyte flow rate around amperometric sensors at equilibrium conditions by studying the direct current level and its fluctuations at selected concentration. To independently explore an impact of concentration and flow rate on spectral density of current fluctuations, all measurements were provided out under the same temperature, and each sample sensor was put to the same position at the test chamber to be under same fluidic condition. The experiments were carried out on the fully-printed amperometric NO2 sensor based on a semi-planar three electrode topology. The aims of this experimental study are two-fold: firstly, to show that spectral density of current fluctuations significantly changes in the level and the shape as flow rate increases at constant concentration of detected gas; and secondly, to demonstrate that evaluation of these fluctuations and DC component can be used to compensate the negative effect of flow rate on sensor responses. The spectral density of current fluctuations develops as several mechanisms related to fluctuation phenomena become dominant with increasing flow rate. Thus, signal-to-noise ratio of current response on detected gas decreases as flow rate increases, while the ratio is almost invariant to gas concentration.
Název v anglickém jazyce
Effect of various flow rate on current fluctuations of amperometric gas sensors
Popis výsledku anglicky
The flow rate of analyte is a key parameter in the measurement system that influences response of gas sensors. The paper focuses on possibility of improved gas detection by modulation of analyte flow rate around amperometric sensors at equilibrium conditions by studying the direct current level and its fluctuations at selected concentration. To independently explore an impact of concentration and flow rate on spectral density of current fluctuations, all measurements were provided out under the same temperature, and each sample sensor was put to the same position at the test chamber to be under same fluidic condition. The experiments were carried out on the fully-printed amperometric NO2 sensor based on a semi-planar three electrode topology. The aims of this experimental study are two-fold: firstly, to show that spectral density of current fluctuations significantly changes in the level and the shape as flow rate increases at constant concentration of detected gas; and secondly, to demonstrate that evaluation of these fluctuations and DC component can be used to compensate the negative effect of flow rate on sensor responses. The spectral density of current fluctuations develops as several mechanisms related to fluctuation phenomena become dominant with increasing flow rate. Thus, signal-to-noise ratio of current response on detected gas decreases as flow rate increases, while the ratio is almost invariant to gas concentration.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20201 - Electrical and electronic engineering
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Sensors and Actuators B: Chemical
ISSN
0925-4005
e-ISSN
—
Svazek periodika
283
Číslo periodika v rámci svazku
1
Stát vydavatele periodika
CH - Švýcarská konfederace
Počet stran výsledku
8
Strana od-do
321-328
Kód UT WoS článku
000455854000040
EID výsledku v databázi Scopus
999