bsuirДоклады БГУИРDoklady BGUIR1729-76482708-0382БГУИР10.35596/1729-7648-2026-24-3-14-20bsuir-4370Research ArticleСтатьиЭлектрофизические характеристики сенсоров температуры и влажности на основе углеродсодержащего PLA-пластикаElectrophysical Characteristics of Temperature and Humidity Sensors Based on Carbon-Containing PLA PlasticЛобанокМ. В.LobanokM.

Лобанок Михаил Владимирович, канд. физ.-мат. наук, доц. каф. физической электроники и нанотехнологий

220064, Минск, ул. Курчатова, 5

Тел.: +375 29 654-09-53

Lobanok Mikhail, Cand. Sci. (Phys. and Math.), Associate Professor of the Department of Physical Electronics and Nanotechnologies

220064, Minsk, Kurchatova St., 5

Tel.: +375 29 654-09-53

LobanokMV@bsu.byЧижовИ. В.ChizhovI.

Чижов И. В., асп. каф. физической электроники и нанотехнологий

Минск

Chizhov I., Postgraduate of Physical Electronics and Nanotechnologies Department

Minsk

ПавлышкоМ. А.PaulyshkaM.

Павлышко М. А., науч. сотр. НИЛ информационно-измерительных систем

Минск

Paulyshka M., Researcher at the Research Laboratory of Information and Measuring Systems

Minsk

ПотоцкийА. С.PototskyA.

Потоцкий А. С., студент

Минск

Pototsky A., Student

Minsk

Белорусский государственный университетBelarusian State University2026290620262431420Copyright © Лобанок М.В., Чижов И.В., Павлышко М.А., Потоцкий А.С., 20262026Лобанок М.В., Чижов И.В., Павлышко М.А., Потоцкий А.С.Lobanok M., Chizhov I., Paulyshka M., Pototsky A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://doklady.bsuir.by/jour/article/view/4370

Исследованы электрофизические характеристики 3D-печатных сенсоров температуры и влажности на основе проводящего PLA-композита с углеродным наполнителем. Установлены связи между морфологией структуры, полученной методом послойного наплавления расплавом, топологией токопроводящих дорожек и частотно-зависимым откликом при изменении температуры и относительной влажности. Показано, что экструзия через сопло и послойное формирование дорожки увеличивают удельное сопротивление одиночного трека в 3–4 раза по сравнению с исходной нитью вследствие межслоевых границ, пористости и частичной перестройки перколяционной сети. Отмечено, что последовательная топология обеспечивает наибольший относительный отклик, тогда как параллельная – минимальное базовое сопротивление. В диапазоне 20–100 °C наблюдается отрицательный температурный коэффициент сопротивления, а при изменении влажности от 40 до 100 % характер сигнала зависит от частоты измерения. Показано, что в области низких и средних частот сопротивление изменяется слабо и преимущественно определяется барьерно-перколяционным переносом, тогда как при 100 кГц может проявляться слабый вклад межфазной поляризации и емкостного шунтирования.

The electrophysical characteristics of 3D-printed temperature and humidity sensors based on a conductive PLA composite with carbon filler are studied. Relationships are established between the morphology of the structure obtained by fused deposition, the topology of the conductive tracks, and the frequency-dependent response to changes in temperature and relative humidity. It is shown that extrusion through a nozzle and layer-by-layer track formation increase the specific resistance of a single track by 3–4 times compared to the original filament due to interlayer boundaries, porosity, and partial rearrangement of the percolation network. It is noted that the serial topology provides the highest relative response, while the parallel topology provides the lowest baseline resistance. A negative temperature coefficient of resistance is observed in the range of 20–100 °C, and as the humidity changes from 40 to 100 %, the nature of the signal depends on the measurement frequency. It is shown that in the low and medium frequency region the resistance changes weakly and is mainly determined by barrier percolation transport, whereas at 100 kHz a weak contribution of interfacial polarization and capacitive shunting can appear.

3D-печатьметод послойного наплавления расплавомсенсор влажностисенсор температурыпроводящий полилактидперколяционный композитуглеродный наполнитель3D printingfused deposition modelinghumidity sensortemperature sensorconductive polylactidepercolation compositecarbon fillerReferencesAhmed F., Azhari A., Marzbanrad E., Liravi F., Ali U., Pope M. A., et al. (2019) Graphene Oxide Humidity Sensor Built Entirely by Additive Manufacturing Approaches. Journal of Materials Science: Materials in Electronics. 30, 8980–8988. https://doi.org/10.1007/s10854-019-01226-y.Ahmed F., Azhari A., Marzbanrad E., Liravi F., Ali U., Pope M. A., et al. (2019) Graphene Oxide Humidity Sensor Built Entirely by Additive Manufacturing Approaches. Journal of Materials Science: Materials in Electronics. 30, 8980–8988. https://doi.org/10.1007/s10854-019-01226-y.Marasso S. L., Cocuzza M., Bertana V., Perrucci F., Tommasi A., Ferrero S., et al. (2018) PLA Conductive Filament for 3D Printed Smart Sensing Applications. Rapid Prototyping Journal. 24 (4), 739–743. https://doi.org/10.1108/RPJ-09-2016-0150.Marasso S. L., Cocuzza M., Bertana V., Perrucci F., Tommasi A., Ferrero S., et al. (2018) PLA Conductive Filament for 3D Printed Smart Sensing Applications. Rapid Prototyping Journal. 24 (4), 739–743. https://doi.org/10.1108/RPJ-09-2016-0150.Tirado-Garcia I., Garcia-Gonzalez D., Garzon-Hernandez S., Rusinek A., Robles G., Martinez-Tarifa J. M., et al. (2021) Conductive 3D Printed PLA Composites: On the Interplay of Mechanical, Electrical and Thermal Behaviours. Composite Structures. 265. https://doi.org/10.1016/j.compstruct.2021.113744.Tirado-Garcia I., Garcia-Gonzalez D., Garzon-Hernandez S., Rusinek A., Robles G., Martinez-Tarifa J. M., et al. (2021) Conductive 3D Printed PLA Composites: On the Interplay of Mechanical, Electrical and Thermal Behaviours. Composite Structures. 265. https://doi.org/10.1016/j.compstruct.2021.113744.Zazoum B., Batoo K. M., Khan M. A. A. (2022) Recent Advances in Flexible Sensors and Their Applications. Sensors. 22 (12). https://doi.org/10.3390/s22124653.Zazoum B., Batoo K. M., Khan M. A. A. (2022) Recent Advances in Flexible Sensors and Their Applications. Sensors. 22 (12). https://doi.org/10.3390/s22124653.Osman A., Lu J. (2023) 3D Printing of Polymer Composites to Fabricate Wearable Sensors: A Comprehensive Review. Materials Science and Engineering: R: Reports. 154. https://doi.org/10.1016/j.mser.2023.100734.Osman A., Lu J. (2023) 3D Printing of Polymer Composites to Fabricate Wearable Sensors: A Comprehensive Review. Materials Science and Engineering: R: Reports. 154. https://doi.org/10.1016/j.mser.2023.100734.Stefano J. S., Silva L. R. G., Janegitz B. C. (2022) New Carbon Black-Based Conductive Filaments for the Additive Manufacture of Improved Electrochemical Sensors by Fused Deposition Modeling. Microchimica Acta. 189 (11). https://doi.org/10.1007/s00604-022-05511-2.Stefano J. S., Silva L. R. G., Janegitz B. C. (2022) New Carbon Black-Based Conductive Filaments for the Additive Manufacture of Improved Electrochemical Sensors by Fused Deposition Modeling. Microchimica Acta. 189 (11). https://doi.org/10.1007/s00604-022-05511-2.Cieślik M., Rodak A., Susik A., Wójcik N., Szociński M., Ryl J., et al. (2023) Multiple Reprocessing of Conductive PLA 3D-Printing Filament: Rheology, Morphology, Thermal and Electrochemical Properties Assessment. Materials. 16 (3). https://doi.org/10.3390/ma16031307.Cieślik M., Rodak A., Susik A., Wójcik N., Szociński M., Ryl J., et al. (2023) Multiple Reprocessing of Conductive PLA 3D-Printing Filament: Rheology, Morphology, Thermal and Electrochemical Properties Assessment. Materials. 16 (3). https://doi.org/10.3390/ma16031307.Matsalis S., Paterakis G., Koutroumanis N., Anagnostopoulos G., Galiotis C. (2024) Fabrication and Performance of Capacitive Humidity and Strain Sensors That Incorporate 3D-Printed Nanocomposite Electrodes. Sensors International. 5. https://doi.org/10.1016/j.sintl.2023.100272.Matsalis S., Paterakis G., Koutroumanis N., Anagnostopoulos G., Galiotis C. (2024) Fabrication and Performance of Capacitive Humidity and Strain Sensors That Incorporate 3D-Printed Nanocomposite Electrodes. Sensors International. 5. https://doi.org/10.1016/j.sintl.2023.100272.Zhao D., Jia W., Feng X., Yang H., Xie Y., Shang J., et al. (2024) Flexible Sensors Based on Conductive Polymer Composites. Sensors. 24 (14). https://doi.org/10.3390/s24144664.Zhao D., Jia W., Feng X., Yang H., Xie Y., Shang J., et al. (2024) Flexible Sensors Based on Conductive Polymer Composites. Sensors. 24 (14). https://doi.org/10.3390/s24144664.Silva M. V. C. O., Carvalho M. S., Silva L. R. G., da Rocha R. G., Cambraia L. V., Janegitz B. C., et al. (2024) Tailoring 3D-Printed Sensor Properties with Reduced Graphene Oxide: Improved Conductive Filaments. Microchimica Acta. 191 (10). https://doi.org/10.1007/s00604-024-06720-7.Silva M. V. C. O., Carvalho M. S., Silva L. R. G., da Rocha R. G., Cambraia L. V., Janegitz B. C., et al. (2024) Tailoring 3D-Printed Sensor Properties with Reduced Graphene Oxide: Improved Conductive Filaments. Microchimica Acta. 191 (10). https://doi.org/10.1007/s00604-024-06720-7.Wiśniewska P., Łepek A., Ryl J., Khodadadi Yazdi M. (2025) Additive Manufacturing of Electrically Conductive Polymers: A Comprehensive Review. Journal of Materials Chemistry C. 13 (42), 21302–21332. https://doi.org/10.1039/D5TC02571K.Wiśniewska P., Łepek A., Ryl J., Khodadadi Yazdi M. (2025) Additive Manufacturing of Electrically Conductive Polymers: A Comprehensive Review. Journal of Materials Chemistry C. 13 (42), 21302–21332. https://doi.org/10.1039/D5TC02571K.Staffa A., Krivic G., Tocci M., Palmieri M., Cianetti F., Slavič J. (2025) Three-Dimensionally Printed Temperature Sensors Based on Conductive PLA Materials. Sensors. 25 (20). https://doi.org/10.3390/s25206348.Staffa A., Krivic G., Tocci M., Palmieri M., Cianetti F., Slavič J. (2025) Three-Dimensionally Printed Temperature Sensors Based on Conductive PLA Materials. Sensors. 25 (20). https://doi.org/10.3390/s25206348.Jonscher A. K. (1977) The “Universal” Dielectric Response. Nature. 267, 673–679. https://doi.org/10.1038/267673a0.Jonscher A. K. (1977) The “Universal” Dielectric Response. Nature. 267, 673–679. https://doi.org/10.1038/267673a0.Samet M., Kallel A., Serghei A. (2022) Maxwell-Wagner-Sillars Interfacial Polarization in Dielectric Spectra of Composite Materials: Scaling Laws and Applications. Journal of Composite Materials. 56 (20), 3197–3217. https://doi.org/10.1177/00219983221090629.Samet M., Kallel A., Serghei A. (2022) Maxwell-Wagner-Sillars Interfacial Polarization in Dielectric Spectra of Composite Materials: Scaling Laws and Applications. Journal of Composite Materials. 56 (20), 3197–3217. https://doi.org/10.1177/00219983221090629.

The authors declare that there are no conflicts of interest present.