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Relevant bibliographies by topics / PIEZOSENSORS

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Journal articles

Academic literature on the topic 'PIEZOSENSORS'

Author: Grafiati

Published: 23 February 2024

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Journal articles on the topic "PIEZOSENSORS"

1

Vu, Hoang Yen, and A. N. Zyablov. "Application of MIP-sensors to the determination of preservatives in non-alcoholic drinks." Industrial laboratory. Diagnostics of materials 88, no. 8 (2022): 10–16. http://dx.doi.org/10.26896/1028-6861-2022-88-8-10-16.

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The piezosensors modified with a molecularly imprinted polymer (MIP) with potassium sorbate (MIP-E202) and sodium benzoate (MIP-E211) imprints are tested and implemented in the determination of preservatives in soft drinks. Molecularly imprinted polymers were synthesized by noncovalent imprinting on the base of copolymer of 1,2,4,5-benzene tetracarboxylic acid dianhydride and 4,4’-diaminodiphenyl oxide in N,N-dimethylformamide (DMF) in the presence of templates. Piezoelectric sensors based on MIP and non-imprinted polymer (polyimide) were compared. High values of the imprinting factor (IF) and selectivity coefficient (k) obtained for MIP-E202 (IF = 5.4) and MIP-E211 (IF = 6.0) sensors indicated better selectivity and ability of MIP-based sensors to recognize target molecules than piezosensors modified with a reference polymer. The detectable concentrations range within 5 – 500 mg/liter, the detection limits for potassium sorbate and sodium benzoate are 1.6 and 2.0 mg/liter, respectively. Correctness of the preservative determination in model solutions was verified using the spike test. MIP-based sensors appeared sensitive to the preservative determination and insensitive to interfering substances. The matrix composition of the non-alcoholic drinks did not affect the value of the analytical signal of the piezoelectric sensor. High performance liquid chromatography (HPLC) was used as a reference method. The results of potassium sorbate and sodium benzoate determination in non-alcoholic drinks using piezosensors match the HPLC data rather well, their content in the studied soft drinks being 130 – 176 and 129 – 146 mg/liter, respectively.

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2

Vu, Hoang Yen, and A. N. Zyablov. "Determination of preservatives in liquids by piezosensors." Аналитика и контроль 26, no. 2 (2022): 134–40. http://dx.doi.org/10.15826/analitika.2022.26.2.001.

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In the current study, piezosensors based on the molecularly imprinted polyimides with imprints of potassium sorbate and sodium benzoate were obtained. Molecularly Imprinted Polymers (MIPs) were synthesized using a polyimide and a non-covalent imprinting technique. It was established that the use of 0.1 g/mL template concentration at the thermochemical stage led to the formation of the maximum number of molecular imprints on the film surface. Using the scanning force microscopy, it was found that the reference polymer film had a uniform surface with a small height difference from 1.4 to 2.6 nm (including 88.94 % of pores with a radius of up to 10 nm) and had good film thickness reproducibility. The surface morphology of films of molecularly imprinted polymers with imprints of potassium sorbate and sodium benzoate had more developed surface, which was associated with the peculiarities of the formation of imprints. In this work, imprinting factor (IF) and selectivity coefficient (k) of the sensor were calculated. Molecularly imprinted polymers had better selectivity, sensitivity, and ability to recognize target template molecules than the reference polymers (non-imprinted polymers). Molecularly imprinted polymer-modified piezoelectric sensors (MIP sensors) have been used to analyze potassium sorbate and sodium benzoate in non-alcoholic drinks. The linear concentration range was identified to be 5 - 500 mg/L and the limit of detection for potassium sorbate and sodium benzoate were 1.6 mg/L and 2 mg/L, respectively. The determination of potassium sorbate and sodium benzoate in non-alcoholic drinks was carried out by MIP sensors and spectrophotometry method. The results obtained by the sensors and the spectrophotometry method were in good agreement. The concentration of preservatives for the potassium sorbate and the sodium benzoate in non-alcoholic drinks was 130 - 176 mg/L and 129 - 146 mg/L, respectively.

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3

Cao, Nhat Linh, Ol'ga Vasil'yevna Duvanova, Aleksandr Nikolayevich Zyablov, and Anh Tien Nguyen. "APPLICATION OF PIEZOSENSORS BASED ON THE MOLECULARLY IMPRINTED POLYIMIDE FOR DETERMI-NATION OF CAFFEINE IN TEA." chemistry of plant raw material, no. 2 (June 10, 2021): 173–80. http://dx.doi.org/10.14258/jcprm.2021028239.

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In this article the molecularly imprinted polymers (MIPs) have been synthesized on the surface of piezosensors. The starting polymer for MIPs production was polyamic acid, which is a copolymer of 1,2,4,5-benzenetetracarboxylic acid and 4,4′-diaminodiphenyl ether. The caffeine served as the template. The quantum-chemical simulation was performed by the Gaussian 09 software using the DFT method at the B3LYP/6-31G(d,p) level with the basis set superposition error (BSSE) at the preliminary stage of the synthesis of the MIP for caffeine. The prepolymerization complexes were calculated to establish intermolecular interactions and obtain the optimum molar ratio between the template and polyamiс acid. It is shown that the constitutional repeating units of polyamic acid interact with the caffeine by forming H-bonds via carboxyl groups. The interaction energy first increases and then decreases with increasing the molar ratio of imprinting. Based on the quantum-chemical calculations, the optimal ratio of the reagents in prepolymerization mixture was set to 1 : 3 with the highest interaction energy (96.7 kJ/mol). Applying thermal imidization of solution of polyamic acid in the presence of a template, the molecularly imprinted polyimide has been synthesized by the non-covalent imprinting method. The ability of the obtained piezosensors to recognize the tempalte in model mixtures was experimentally evaluated. It was found that the range of detectable concentrations of caffeine is 3.1.10-6-10-1 mol/dm3 and the detection limit is 10-6 mol/dm3. Correctness of the caffeine determination in model solutions was verified in the spike/recovery tests. Piezosensors based on MIP were approved for the determination of the caffeine in tea varieties. It is shown that the concentration of caffeine in the aqueous solution increases with increasing brewing time. The relative standard deviation is less than 8%.

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4

Kuchmenko, T. A., E. V. Bodrenko, and E. P. Anokhina. "Express analysis of hard alcohol drinks using the “electronic nose” piezosensors arra." Аналитика и контроль 21, no. 3 (2017): 262–73. http://dx.doi.org/10.15826/analitika.2017.21.3.003.

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5

Korenman, Ya I., E. I. Mel’nikova, S. I. Niftaliev, et al. "System of piezosensors for prognostication of the storage life of food products." Russian Journal of Applied Chemistry 82, no. 8 (2009): 1380–83. http://dx.doi.org/10.1134/s1070427209080114.

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6

Khalzova, S. A., D. A. Krivonosova, A. N. Zyablov та O. V. Duvanova. "Determination of E102, E110, Е122, E124 synthetic dyes in soft drinks by modified piezosensors". Аналитика и контроль 21, № 2 (2017): 85–92. http://dx.doi.org/10.15826/analitika.2017.21.2.006.

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7

Chiu, S. S., H. L. W. Chan, S. W. Or, Y. M. Cheung, and P. C. K. Liu. "Effect of electrode pattern on the outputs of piezosensors for wire bonding process control." Materials Science and Engineering: B 99, no. 1-3 (2003): 121–26. http://dx.doi.org/10.1016/s0921-5107(02)00508-1.

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8

Karnaukhov, V. G., V. I. Kozlov, and T. V. Karnaukhova. "Forced vibrations of an anisotropic rectangular plate with piezosensors with account for shear deformations." Reports of the National Academy of Sciences of Ukraine, no. 3 (March 22, 2015): 45–49. http://dx.doi.org/10.15407/dopovidi2015.03.045.

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9

Kuchmenko, T. A., A. A. Shuba, and E. V. Drozdova. "Substantiation of the operating life of gas piezosensors in detection of vapors of organic compounds." Russian Journal of Applied Chemistry 88, no. 12 (2015): 1997–2008. http://dx.doi.org/10.1134/s10704272150120150.

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10

Roh, Chang-Gyun, Hyeonmyeong Jeon, and Bongsoo Son. "Do Heavy Vehicles Always Have a Negative Effect on Traffic Flow?" Applied Sciences 11, no. 12 (2021): 5520. http://dx.doi.org/10.3390/app11125520.

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The purpose of this study is to analyze the effect of heavy vehicles on traffic flow on a two-lane highway. To achieve this goal, data was obtained from piezosensors on the Seoul–Chuncheon Expressway. Analysis of the data showed that, as everyone knows, the average speed of traffic flows decreases as the proportion of heavy vehicles increases. However, not only the speed decreased, but the speed deviation between vehicles decreased. In other words, it was found that within the traffic group that formed the same platoon, individual vehicles were forced to form similar speeds, resulting in a homogeneous rate. This means that heavy vehicles can be included in the traffic stream, reducing the chances of a vehicle-to-vehicle conflict. This kind of influence can be said to explain that heavy vehicles do not necessarily have a negative effect on traffic flow. In this way, we expect to be able to study ways to manage traffic flow by using the effects of low-speed vehicles.

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