Ing.

Pavel Tofel

Ph.D.

FEEC, UFYZ – Researcher

+420 54114 6010
tofel@vut.cz

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Ing. Pavel Tofel, Ph.D.

Publications

  • 2021

    MRLÍK, M.; OSIČKA, J.; CVEK, M.; ILČÍKOVÁ, M.; SRNEC, P.; GORGOL, D.; TOFEL, P. Comparative Study of PVDF Sheets and Their Sensitivity to Mechanical Vibrations: The Role of Dimensions, Molecular Weight, Stretching and Poling. Nanomaterials, 2021, vol. 11, no. 7, p. 1-11. ISSN: 2079-4991.
    Detail | WWW | Full text in the Digital Library

    BIJALWAN, V.; PRAJZLER, V.; ERHART, J.; TAN, H.; ROUPCOVÁ, P.; SOBOLA, D.; TOFEL, P.; MACA, K. Rapid pressure-less and spark plasma sintering of (Ba0.85Ca0.15Zr0.1T0.9)O3 lead-free piezoelectric ceramics. Journal of the European Ceramic Society, 2021, vol. 41, no. 4, p. 2514-2523. ISSN: 0955-2219.
    Detail | WWW

    NAN, B.; MATOUŠEK, A.; TOFEL, P.; BIJALWAN, V.; BUTTON, T.; LI, L.; FAN, P.; ZHANG, H. Effect of lithium carbonate on the sintering, microstructure, and functional properties of sol-gel-derived Ba0.85Ca0.15Zr0.1Ti0.9O3 piezoceramics. JOURNAL OF MATERIALS RESEARCH, 2021, vol. 36, no. 5, p. 1105-1113. ISSN: 0884-2914.
    Detail | WWW

    DRDLÍK, D.; ZEMAN, D.; TOFEL, P.; CHLUP, Z.; HADRABA, H.; DRDLÍKOVÁ, K. A comparative study of direct and indirect evaluation of piezoelectric properties of electrophoreticaly deposited (Ba, Ca) (Zr, Ti)O-3 lead-free piezoceramics. Ceramics International, 2021, vol. 47, no. 2, p. 2034-2042. ISSN: 0272-8842.
    Detail | WWW

    BIJALWAN, V.; ERHART, J.; SPOTZ, Z.; SOBOLA, D.; PRAJZLER, V.; TOFEL, P.; MACA, K. Composition driven (Ba,Ca)(Zr,Ti)O(3)lead-free ceramics with large quality factor and energy harvesting characteristics. Journal of the American Ceramic Society, 2021, vol. 104, no. 2, p. 1088-1101. ISSN: 0002-7820.
    Detail | WWW

  • 2020

    BAI, Y.; PALOSAARI, J.; TOFEL, P.; JUUTI, J. A Single-Material Multi-Source Energy Harvester, Multifunctional Sensor, and Integrated Harvester-Sensor System-Demonstration of Concept. Energy Technology, 2020, no. 2000461, p. 1-12. ISSN: 2194-4288.
    Detail | WWW

    ČÁSTKOVÁ, K.; KAŠTYL, J.; SOBOLA, D.; PETRUŠ, J.; ŠŤASTNÁ, E.; ŘÍHA, D.; TOFEL, P. Structure–Properties Relationship of Electrospun PVDF fibers. Nanomaterials, 2020, vol. 10, no. 6, p. 1-19. ISSN: 2079-4991.
    Detail | WWW | Full text in the Digital Library

    BIJALWAN, V.; TOFEL, P.; SPOTZ, Z.; ČÁSTKOVÁ, K.; SOBOLA, D.; ERHART, J.; MACA, K. Processing of 0.55(Ba0.9Ca0.1)TiO3-0.45Ba(Sn0.2Ti0.8)O-3 lead-free ceramics with high piezoelectricity. Journal of the American Ceramic Society, 2020, vol. 103, no. 8, p. 4611-4624. ISSN: 0002-7820.
    Detail | WWW

    SOBOLA, D.; KASPAR, P.; TOFEL, P.; HOLCMAN, V. Scanning electron microscopy and energy‐dispersive X‐ray spectroscopy analysis of electrochemically etched graphite tips created from pencil lead. MICROSCOPY RESEARCH AND TECHNIQUE, 2020, no. 1, p. 196-201. ISSN: 1097-0029.
    Detail | WWW

    DALLAEV, R.; SOBOLA, D.; TOFEL, P.; ŠKVARENINA, Ľ.; SEDLÁK, P. Aluminum Nitride Nanofilms by Atomic Layer Deposition Using Alternative Precursors Hydrazinium Chloride and Triisobutylaluminum. Coatings, MDPI, 2020, vol. 10, no. 10, p. 1-14. ISSN: 2079-6412.
    Detail | WWW | Full text in the Digital Library

    KASPAR, P.; SOBOLA, D.; ČÁSTKOVÁ, K.; KNÁPEK, A.; BURDA, D.; ORUDZHEV, F.; DALLAEV, R.; TOFEL, P.; TRČKA, T.; GRMELA, L.; HADAŠ, Z. Characterization of Polyvinylidene Fluoride (PVDF) Electrospun Fibers Doped by Carbon Flakes. Polymers, 2020, vol. 12, no. 12, p. 2766-1 (2766-15 p.)ISSN: 2073-4360.
    Detail | WWW | Full text in the Digital Library

    MAJER, Z.; ŠEVEČEK, O.; ŠTEGNEROVÁ, K.; RUBEŠ, O.; TOFEL, P.; HADAŠ, Z. Analysis of maximal operation amplitudes of piezoelectric vibration energy harvesters. In Advances in Fracture and Damage Mechanics XVIII. Key Engineering Materials (print). 1. Švýcarsko: Trans Tech Publications Ltd, 2020. p. 324-329. ISBN: 9783035715866. ISSN: 1013-9826.
    Detail | WWW

    BIJALWAN, V.; SOKOLOV, I.; TOFEL, P. Poling procedures and piezoelectric response of (Ba0.85Ca0.15Zr0.1T0.9)O-3 ceramics. Journal of Asian Ceramic Societies, 2020, vol. 9, no. 1, p. 1-8. ISSN: 2187-0764.
    Detail | WWW | Full text in the Digital Library

    HADAŠ, Z.; RUBEŠ, O.; TOFEL, P.; MACHŮ, Z.; ŘÍHA, D.; ŠEVEČEK, O.; KAŠTYL, J.; SOBOLA, D.; ČÁSTKOVÁ, K. Piezoelectric PVDF Elements and Systems for Mechanical Engineering Applications. In 2020 19th International Conference on Mechatronics - Mechatronika (ME). Prague, Czech Republic: Institute of Electrical and Electronics Engineers Inc., 2020. p. 1-8. ISBN: 978-1-7281-5602-6.
    Detail | WWW

    HADAŠ, Z.; HLINKA, J.; JANÁK, L.; KŠICA, F.; RUBEŠ, O.; ŠEVEČEK, O.; TOFEL, P. Energy Harvesting Technologies for Structural Health Monitoring of Airplane Components-A Review. SENSORS, 2020, vol. 20, no. 22, p. 1-57. ISSN: 1424-8220.
    Detail | WWW

  • 2019

    BIJALWAN, V.; TOFEL, P.; ERHART, J.; MACA, K. The complex evaluation of functional properties of nearly dense BCZT ceramics and their dependence on the grain size. Ceramics International, 2019, vol. 45, no. 1, p. 317-326. ISSN: 0272-8842.
    Detail | WWW

    BIJALWAN, V.; HUGHES, H.; POOLADVAND, H.; TOFEL, P.; NAN, B.; HOLCMAN, V.; BAI, Y.; BUTTON, T. The effect of sintering temperature on the microstructure and functional properties of BCZT-xCeO2 lead free ceramics. MATERIALS RESEARCH BULLETIN, 2019, vol. 114, no. 1, p. 121-129. ISSN: 0025-5408.
    Detail | WWW

    BIJALWAN, V.; TOFEL, P. Synthesis of high density sub-10 µm (Ba0.85Ca0.15) (Zr0.1Ti0.9)O3-xCeO2 lead-free ceramics using a twostep sintering technique. Journal of Asian Ceramic Societies, 2019, vol. 7, no. 4, p. 1-8. ISSN: 2187-0764.
    Detail | WWW | Full text in the Digital Library

    TOFEL, P.; MACHŮ, Z.; CHLUP, Z.; HADRABA, H.; DRDLÍK, D.; ŠEVEČEK, O.; MAJER, Z.; HOLCMAN, V.; HADAŠ, Z. Novel layered architecture based on Al2O3/ZrO2/BaTiO3 for SMART piezoceramic electromechanical converters. European Physical Journal-Special Topics, 2019, vol. 228, no. 7, p. 1575-1588. ISSN: 1951-6355.
    Detail | WWW

  • 2018

    RUBEŠ, O.; TOFEL, P.; MACKŮ, R.; ŠKARVADA, P.; KŠICA, F.; HADAŠ, Z. Piezoelectric Micro-fiber Composite Structure for Sensing and Energy Harvesting Applications. In Proceedings of the 2018 18th International Conference on Mechatronics – Mechatronika (ME). 1. Brno: Brno University of Technolgy, 2018, 2018. p. 344-349. ISBN: 978-80-214-5543-6.
    Detail | WWW

    BIJALWAN, V.; TOFEL, P.; HOLCMAN, V. Grain size dependence of the microstructures and functional properties of (Ba0.85 Ca0.15–x Cex) (Zr0.1 Ti0.9) O3 lead-free piezoelectric ceramics. Journal of Asian Ceramic Societies, 2018, vol. 6, no. 4, p. 384-393. ISSN: 2187-0764.
    Detail | WWW

    HOLCMAN, V.; MAJZNER, J.; TOFEL, P. Vývoj prototypu stacionární a přenosné časomíry. 2018. p. 1-4.
    Detail

    PAPEŽ, N.; SOBOLA, D.; ŠKVARENINA, Ľ.; ŠKARVADA, P.; HEMZAL, D.; TOFEL, P.; GRMELA, L. Degradation analysis of GaAs solar cells at thermal stress. Applied Surface Science, 2018, no. 461, p. 212-220. ISSN: 0169-4332.
    Detail

    TALU, S.; PAPEŽ, N.; SOBOLA, D.; TOFEL, P. Fractal Analysis of the 3-D surface Topography of GaAs Solar Cells. In DEStech Transactions on Environment, Energy and Earth Sciences. DEStech Transactions on Environment, Energy and Earth Sciences. DEStech Publications, Inc., 2018. p. 489-493. ISBN: 978-1-60595-514-8. ISSN: 2475-8833.
    Detail | WWW | Full text in the Digital Library

    HOLCMAN, V.; TOFEL, P. Vývoj tlakového senzoru a vhodné baterie pro ortopedické vložky. 2018. p. 1-20.
    Detail

    BAI, Y.; TOFEL, P.; HADAŠ, Z.; SMILEK, J.; LOŠÁK, P.; ŠKARVADA, P.; MACKŮ, R. Investigation of a cantilever structured piezoelectric energy harvester used for wearable devices with random vibration input. MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 2018, vol. 106, no. 106, p. 303-318. ISSN: 0888-3270.
    Detail | WWW

  • 2017

    PAPEŽ, N.; ŠKVARENINA, Ľ.; TOFEL, P.; SOBOLA, D. Thermal stability of gallium arsenide solar cells. In Photonics, Devices, and Systems VII. Proceedings of SPIE. 2017. p. 543-548. ISBN: 9781510617032. ISSN: 0277-786X.
    Detail | WWW

    TOFEL, P. Vyhodnocení elektrických parametrů na 10 kusů izolačního materiálu. 2017. p. 1-2.
    Detail

    BAI, Y.; TOFEL, P.; PALOSAARI, J.; JANTUNEN, H.; JUUTI, J. A Game Changer: A Multifunctional Perovskite Exhibiting Giant Ferroelectricity and Narrow Bandgap with Potential Application in a Truly Monolithic Multienergy Harvester or Sensor. ADVANCED MATERIALS & PROCESSES, 2017, vol. 29, no. 29, p. 1-7. ISSN: 0935-9648.
    Detail | WWW

    TOFEL, P. Vyhodnocení elektrických parametrů na 20 kusů kabelů. 2017. p. 1-2.
    Detail

    PAPEŽ, N.; SOBOLA, D.; ŠKARVADA, P.; ŠKVARENINA, Ľ.; HEMZAL, D.; TOFEL, P.; GRMELA, L. Degradation analysis of GaAs solar cells at thermal stress. Progress in Applied Surface, Interface and Thin Film Science - Solar Renewable Energy News 2017. Bratislava: Comenius University, 2017. p. 105-105. ISBN: 978-80-223-4411-1.
    Detail

  • 2015

    BAI, Y.; HUGHES, H.; TOFEL, P.; MEGGS, C.; BUTTON, T. Fabrication and Characterization of Vibration and Wind Energy Harvesters Using Multilayer Free-Standing Piezoelectric Thick Films. Journal of Microelectronics and Electronic Packaging, 2015, vol. 12, no. 4, p. 181-188. ISSN: 1551-4897.
    Detail

    BAI, Y.; MATOUŠEK, A.; TOFEL, P.; BIJALWAN, V.; NAN, B.; HUGHES, H.; BUTTON, T. (Ba,Ca)(Zr,Ti)O3 lead-free piezoelectric ceramics-The critical role of processing on properties. Journal of the European Ceramic Society, 2015, vol. 35, no. 13, p. 3445-3456. ISSN: 0955-2219.
    Detail

    BAI, Y.; HAVRÁNEK, Z.; TOFEL, P.; MEGGS, C.; HUGHES, H.; BUTTON, T. Nonlinear Piezoelectric Devices for Broadband Air-flow Energy Harvesting. European Physical Journal-Special Topics, 2015, vol. 224, no. 14, p. 2675-2685. ISSN: 1951-6355.
    Detail | WWW

    ČÁSTKOVÁ, K.; MACA, K.; CIHLÁŘ, J.; HUGHES, H.; MATOUŠEK, A.; TOFEL, P.; BAI, Y.; BUTTON, T. Chemical Synthesis, Sintering and Piezoelectric Properties of Ba0.85Ca0.15 Zr0.1Ti0.9O3 Lead-Free Ceramics. Journal of the American Ceramic Society, 2015, vol. 98, no. 8, p. 2373-2380. ISSN: 0002-7820.
    Detail

    BAI, Y.; MATOUŠEK, A.; TOFEL, P.; BIJALWAN, V.; NAN, B.; HUGHES, H.; BUTTON, T. (Ba,Ca)(Zr,Ti)O3lead-free piezoelectric ceramics—The critical role ofprocessing on properties. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2015, vol. 35, no. 13, p. 3445-3456. ISSN: 1873-619X.
    Detail | WWW

  • 2014

    JIANG, Y.; THONGCHAI, T.; BAI, Y.; MEGGS, C.; BUTTON, T.; MATOUŠEK, A.; TOFEL, P.; HUGHES, H. Lead-free piezoelectric materials and composites for high frequency medical ultrasound transducer applications. In Ultrasonics Symposium (IUS), 2014 IEEE International. 1. 2014. p. 903-906. ISBN: 978-1-4799-7049-0.
    Detail

    TOFEL, P.; ŠKARVADA, P.; ŠIKULA, J.; CSÉFALVAY, G. Microstructure and Defects Evaluation of Varistors by Ultrasonic Waves in Low Frequency Range. Key Engineering Materials (print), 2014, vol. 465, no. 1, p. 688-691. ISSN: 1013- 9826.
    Detail

  • 2013

    ŠKARVADA, P.; TOMÁNEK, P.; GRMELA, L.; TOFEL, P.; ŠEVČÍK, M.; MACKŮ, R. Fluctuations of ultrasonic transducer vibration measurement. In 2013 22nd International Conference on Noise and Fluctuations (ICNF), IEEE Catalog Number CFP1392N- USB. Montpellier: 2013. p. Th-P-48- 1 (Th-P-48-4 p.)ISBN: 978-1-4799-0670- 3.
    Detail

  • 2012

    TOFEL, P. NEW POSIBILITIES IN NON DESTRUCTIVE TESTING BY ELECTRO- ULTRASONIC SPECTROSCOPY. In New Trends in Physics 2012. Brno: 2012. p. 81-84. ISBN: 978-80-214-4594- 9.
    Detail

    TOFEL, P.; TRČKA, T.; HOLCMAN, V. Fracture Detection by Electro- Ultrasonic Spectroscopy. In 19th EUROPEAN CONFERENCE ON FRACTURE. 2012. p. 1-8. ISBN: 978-5-905576-18- 8.
    Detail

    ŠKARVADA, P.; TOFEL, P.; TOMÁNEK, P. Ultrasonic transducer peak-to- peak optical measurement. Advances in Electrical and Electronic Engineering - intenetový časopis, (http://advances.utc.sk), 2012, vol. 10, no. 2, p. 125-129. ISSN: 1804- 3119.
    Detail

  • 2011

    SEDLÁK, P.; TOFEL, P.; SEDLÁKOVÁ, V.; MAJZNER, J.; ŠIKULA, J.; HASSE, L. Ultrasonics spectroscopy of silicon single crystal. METROL MEAS SYST, 2011, vol. 18, no. 4, p. 621-630. ISSN: 0860- 8229.
    Detail

    TOFEL, P.; ŠIKULA, J.; HÁJEK, K.; TROJANOVÁ, Z.; BUMBÁLEK, L. Cracks detection in Mg alloy by electro- ultrasonic spectroscopy. Key Engineering Materials, 2011, vol. 465, no. 1, p. 350-353. ISSN: 1013- 9826.
    Detail

    TRČKA, T.; KOKTAVÝ, P.; TOFEL, P. Electromagnetic and acoustic emission signals real-time measurement, processing and data evaluation. Key Engineering Materials, 2011, vol. 465, no. 1, p. 332-335. ISSN: 1013- 9826.
    Detail

    TOFEL, P.; ŠIKULA, J.; GRMELA, L.; SEDLÁK, P.; MAJZNER, J. Diagnostic of billet surface. In 9 th International Conference NDT 2011. Brno: 2011. p. 1-6. ISBN: 978-80-7204-774- 1.
    Detail

  • 2010

    TOFEL, P.; ŠIKULA, J.; SEDLÁKOVÁ, V.; TRČKA, T. Electro Ultrasonic Spectroscopy of Magnesium Composites. Jemná mechanika a optika, 2010, vol. 55, no. 5/ 2010, p. 142-144. ISSN: 0447- 6441.
    Detail

  • 2009

    TOFEL, P.; ŠIKULA, J. ELECTRO- ULTRASONIC SPECTROSCOPY FOR TESTING QUALITY OF RESISTIVES MATERIALS. In Student EEICT 2009. 2009. p. 171-175. ISBN: 978-80-214-3870- 5.
    Detail

  • 2008

    TOFEL, P. NON-DESTRUCTIVE TESTING BY ELECTRO- ULTRASONIC SPECTROSCOPY WITH DC ELECTRIC SIGNAL. In STUDENT EEICT 2008. Ondráčkova 105, Brno: Ing. Zdeněk Novotný, 2008. p. 322-325. ISBN: 978-80-214-3617- 6.
    Detail

    SEDLÁKOVÁ, V.; ŠIKULA, J.; TOFEL, P.; MAJZNER, J. Electro-ultrasonic spectroscopy of polymer- based thick film layers. Microelectronics Reliability, 2008, vol. 48, no. 6, p. 886-889. ISSN: 0026- 2714.
    Detail

    TOFEL, P.; ŠIKULA, J. INTERNAL FRICTION IN MAGNESIUM COMPOSITES BY RESONANCE SPECTROSCOPY. In 6th Workshop NDT 2008. Brno, Czech Republic: Marta Kořenská and Luboš Pazdera, 2008. p. 118-121. ISBN: 978-80-7204-610- 2.
    Detail

    ŠIKULA, J.; HÁJEK, K.; SEDLÁKOVÁ, V.; TOFEL, P.; MAJZNER, J. Improved Signal to Noise Ratio of Electro- ultrasonic Spectroscopy. ElectroScope - http://www.electroscope.zcu. cz, 2008, vol. 2008, no. 6, p. 1-4. ISSN: 1802- 4564.
    Detail

    TOFEL, P.; SEDLÁKOVÁ, V.; ŠIKULA, J. Thick Film Resistor Testing by Electro - Ultrasonic Spectroscopy with DC Electric Signal. In Reliability and Life- time Prediction ISSE2008. 1. Hungary: 2008. p. 56-57. ISBN: 978-963-06-4915- 5.
    Detail

  • 2007

    TOFEL, P. Elektro- ultrazvuková spektroskopie na bleskojistkách. In Elektrotechnika a informatika 2007. Západočeská univerzita v Plzni, Univerzitní 8, 306 14 Plzeň: doc. Ing. Jiří Hammerbauer, CSc, 2007. p. 113-116. ISBN: 978-80-7043-572- 4.
    Detail

    TOFEL, P.; ŠIKULA, J.; TROJANOVÁ, Z. NONLINEAR ULTRASONIC SPECTROSCOPY OF MAGNESIUM COMPOSITES. In NEW TRENDS IN PHYSICS 2007. Brno, Czech Republic: Ing. Zdeněk Novotný CSc., 2007. p. 146-149. ISBN: 978-80-7355-078- 3.
    Detail

    TOFEL, P.; ŠIKULA, J. NON-DESTRUCTIVE TESTING OF A ROCK SAMPLE BY NON- LINEAR ULTRASONIC SPECTROSCOPY. In NEW TRENDS IN PHYSICS 2007. Brno, Czech Republic: Ing. Zdeněk Novotný CSc, 2007. p. 142-145. ISBN: 978-80-7355-078- 3.
    Detail

    TOFEL, P.; ŠIKULA, J. NELINEÁRNÍ ULTRAZVUKOVÁ SPEKTROSKOPIE NA ŽULOVÉM VZORKU. In Zvůle 2007. Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií, 2007. p. 194-197. ISBN: 978-80-214-3468- 4.
    Detail

    TOFEL, P.; HAVRÁNEK, J.; ŠIKULA, J. DESCRIPTION OF A MATERIAL STRUCTURE BY NON-LINEAR ELECTRO- ULTRASONIC SPECTROSCOPY. In Proceedings of 6th international conference of PhD students. Miskolc, Hungary: Dr. Laszlo Lehoczky, 2007. p. 255-260. ISBN: 978-963-661-779- 0.
    Detail

    MAJZNER, J.; SEDLÁKOVÁ, V.; TOFEL, P.; SEDLÁK, P. NOISE IN ULTRASONIC TRANSDUCER. In New Trends in Physics. Brno: Ing. Zdeněk Novotný, 2007. p. 94-97. ISBN: 978-80-7355-078- 3.
    Detail

    TOFEL, P.; ŠIKULA, J.; HASSE, L. The Non-Linear Electro- Ultrasonic Spectroscopy. In 30th International Spring Seminar on Electronics Technology. Cluj-Napoca, Romania: Dan Pitica, 2007. p. 196-197. ISBN: 978-973-713-174- 4.
    Detail

    TOFEL, P.; HASSE, L. ELECTRO- ULTRASONIC SPECTROSCOPY OF CONDUCTIVES MATERIALS. In STUDENT EEICT 2007. Proceedings of the 13th Conference STUDET EEICT 2007 Volume 4. Ing. Zdeněk Novotný CSc., 2007. p. 371-375. ISBN: 978-80-214-3410- 3.
    Detail

    TOFEL, P. Rozpoznávání a třídění objektů podle tvaru. In NOVÉ TRENDY V MIKROELEKTRONICKÝCH SYSTÉMECH A NANOTECHNOLOGIÍCH. Brno: VUT Brno UFYZ, 2007. p. 121-125. ISBN: 978-80-7355-075- 2.
    Detail

    HAVRÁNEK, J.; PAVELKA, J.; TOFEL, P.; ŠIKULA, J. NOISE IN SUBMICRON MOSFETS: RTS's AS THE ULTIMATE COMPONENTS OF THE 1/ f NOISE. In Proceedings of 6th international conference of PhD students. Hungary, MIskolc: University of Miskolc, 2007. p. 249-253. ISBN: 978-963-661-779- 0.
    Detail

  • 2006

    Petr SEDLAK, Jiri MAJZNER, Pavel TOFEL and Josef SIKULA. PIEZOELECTRIC TRANSDUCERS: ELECTRICAL AND NOISE CHARACTERISTICS MODELLING. In Defektoskopie 2006 Proceeding. Brno: Czech Society for Nondestructive Testing, 2006. p. 217 ( p.)ISBN: 80-214-3290- X.
    Detail

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