Akustyczne badania polimeru typu RR-P3HT do wykrywania DMMP w powietrzu

Wrotniak, J. A.

doi:10.15199/48.2018.06.12

Cited by 3 publications

(10 citation statements)

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“…Solution by dissolving about 1 mg (RR)-P3HT in 1 ml chloroform was prepared. The distance of the nozzle from the substrate during the process was: about 40 mm, settling time was about 3 s (see Figure 4) [1,8]. Measuring appliance: (a) the idea of the historical measuring system [2,14], and (b) the newest measurement system with LED lighting with switched channels [1,8,16].…”

Section: Technology Of Applying the Detector Layer Pani And (Rr)-p3ht...mentioning

confidence: 99%

“…In the measurements, the sensing structure was tested for the presence of very low concentrations of CO (5, 10, 15, and 20 ppm) in the synthetic air. [1].…”

Section: Technology Of Applying the Detector Layer Pani And (Rr)-p3ht...mentioning

confidence: 99%

“…This lastly allows for the emergence of the polymer structure and confirmation of the dependence of the shape of the detector surfaces, its morphology, and its influence on the SAW detector response. Historically, different thin film materials and the piezoelectric substrates (LiNbO 3 -lithium niobate Y cut-Z propagation) were utilized with the detector layers ranging from semiconducting to polymers-on which we focused in our research work-PANI (polyaniline), PPY (polypyrrole) with NAFION-to detect carbon oxide (CO), and RR-P3HT (regio-regular poly-3-hexylothiophen)-to detect DMMP (dimethylomethylo-phosphonate) [1]-a simulant of the poison of chemical warfare agent (CWA), like sarin. The development and optimization of the NNA direction (normalized numerical acoustoelectric analysis) over the analytical detector with an acoustic surface wave (SAW), which now, thanks to technological development, has been empirically confirmed.…”

Section: Introductionmentioning

confidence: 99%

“…The results of the research on the application of RR-P3HT (poly 3-hexylthiophene regioregular type) produced by means of air spraying on a quartz module with SAW 205 MHz to detect traces of DMMP (Dimethyl methylphosphonate) molecules were presented [1,15]. DMMP is a non-toxic substance with a similar chemical structure to sarin (Combat Poisoning Agent) and it allows for safe experiments.…”

Section: Introductionmentioning

confidence: 99%

“…The essence of the conducted research is the search for new materials and ways to activate them in order to detect trace concentrations of DMMP in the air without the need of applying high temperatures (above 100°C) [1].…”

Section: Introductionmentioning

confidence: 99%

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Numerical Analysis of the Steady State in SAW Sensor Structures with Selected Polymers for Detection of DMMP and CO

Hejczyk¹,

Wrotniak²,

Jakubik³

2023

Metal-Oxide Gas Sensors

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The chapter presents the results of the numerical investigation of the SAW gas detector structures with selected polymer layers in steady-state conditions. The effect of SAW velocity changes vs. the surface electrical conductivity of the detector structures is predicted on the base of acoustoelectric elemental theory. The electrical surface conductivity of the rough polymer sensing layer placed above the piezoelectric waveguide depends on the profile of the diffused gas molecule concentration inside the whole detector structure. Numerical results in the steady state conditions for the gas molecules DMMP and polymer layer of (RR)-P3HT have been shown as well as for carbon oxide molecules with thin polyaniline and polypyrrole layer. The main aim of the investigations was to study a thin film’s interaction with targeted gases in the SAW detector configuration based on diffusion equations for polymers. Numerical results for profile concentration in steady state conditions for gas molecules concentration, film thickness, roughness, and interaction temperature have been shown. The results of numerical analyzes allow for selecting better detector design conditions, including the morphology of the detector layer, its thickness, operating temperature, and layer type. The numerical results, based on the code written in Python, were shown.

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Section: Technology Of Applying the Detector Layer Pani And (Rr)-p3ht...mentioning

confidence: 99%

“…In the measurements, the sensing structure was tested for the presence of very low concentrations of CO (5, 10, 15, and 20 ppm) in the synthetic air. [1].…”

Section: Technology Of Applying the Detector Layer Pani And (Rr)-p3ht...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Numerical Analysis of the Steady State in SAW Sensor Structures with Selected Polymers for Detection of DMMP and CO

Hejczyk¹,

Wrotniak²,

Jakubik³

2023

Metal-Oxide Gas Sensors

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Light-activated SAW sensor structures with photoconductive polymer films for DMMP detection

Jakubik

Wrotniak²,

Kaźmierczak-Bałata

et al. 2023

Sensors and Actuators B: Chemical

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Archives of Acoustics

Hejczyk

Wrotniak

Magnuski

et al. 2021

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This document presents the results of numerical analyses of the SAW gas sensor in the steady state. The effect of SAW velocity changes depending on how the surface electrical conductivity of the sensing layer is predicted. The conductivity of roughness sensing layer above the piezoelectric waveguide depends on the profile of the diffused gas molecule concentration inside the layer.Numerical results for the gas DMMP (CAS Number 756-79-6) for layer (RR)-P3HT in the steady state are shown. The main aim of the investigations was to study the thin film interaction with target gases in the SAW sensor configuration based on diffusion equation for polymers. Numerical results for profile concentration in steady state are shown.The results of numerical acoustoelectric analysis (NAA) allow to select the sensor design conditions, including the morphology of the sensor layer, its thickness, operating temperature and layer type. The numerical results based on the code written in Python, are described and analyzed. The theoretical results were verified and confirmed experimentally.

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Akustyczne badania polimeru typu RR-P3HT do wykrywania DMMP w powietrzu

Cited by 3 publications

References 0 publications

Numerical Analysis of the Steady State in SAW Sensor Structures with Selected Polymers for Detection of DMMP and CO

Numerical Analysis of the Steady State in SAW Sensor Structures with Selected Polymers for Detection of DMMP and CO

Light-activated SAW sensor structures with photoconductive polymer films for DMMP detection

Archives of Acoustics

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