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Master's Thesis
Author of thesis: Ing. Tereza Havlíková
Acad. year: 2025/2026
Supervisor: Ing. Nikola Papež, Ph.D.
Reviewer: doc. Mgr. Zdenka Fohlerová, Ph.D.
Electrical and electromagnetic in vitro stimulation is used in tissue engineering primarily to influence cell proliferation and viability, thereby promoting regenerative processes. However, conventional direct electrical stimulation based on contact with electrodes is limited by electrochemical side effects, the risk of contamination, and lower reproducibility. This work therefore focuses on a contactless alternative based on electromagnetic induction and compares it with selected approaches to direct electrical stimulation. Experiments were conducted on the HT-1080 cell line cultured on fibrous scaffolds made of biocompatible polyvinylidene fluoride (PVDF), which, in addition to providing mechanical support, can contribute to stimulation due to its piezoelectric effect. The aim of the study was to verify the functionality and stability of the proposed induction system, evaluate the influence of stimulation parameters on the cellular response, and assess the impact of the field on the integrity of the scaffold. The results confirmed the proper operation of the induction system and a more stable stimulation profile compared to direct electrical stimulation, with no damage to the scaffold observed. The key parameters of induction stimulation were found to be the waveform of the excitation signal and the amplitude of the magnetic induction. The highest cell confluence was achieved using a triangular excitation signal with a frequency of 20 Hz and a magnetic induction amplitude of 2 mT. The proposed system thus represents a validated solution for contactless cell stimulation with defined excitation parameters that lead to an increase in their proliferative activity.
tissue engineering, polyvinylidene fluoride, scaffold, electrical stimulation, electromagnetic stimulation, electrospinning, nanofibers, piezoelectric effect, HT-1080 cell line
Date of defence
16.06.2026
Date of publish
15.06.2028
Result of the defence
Defended (thesis was successfully defended)
Grading
A
Process of defence
Studentka prezentovala výsledky své práce a komise byla seznámena s posudky. Doc. Vítek položil otázku na zvolení jednotné hodnoty frekvence pro sinusové i trojúhelníkové buzení. doc. Kolář položil otázku na navržení cívky. Co je uvnitř cívky a jak byla navrhována. Studentka obhájila diplomovou práci a odpověděla na otázky členů komise a oponenta.
Language of thesis
Czech
Faculty
Fakulta elektrotechniky a komunikačních technologií
Department
Department of Biomedical Engineering
Study programme
Bioengineering (MPC-BIO)
Composition of Committee
doc. Ing. Martin Rožánek, Ph.D. (předseda) doc. Ing. Radim Kolář, Ph.D. (místopředseda) doc. Mgr. Zdenka Fohlerová, Ph.D. (člen) prof. Eric Daniel Glowacki, Ph.D. (člen) Ing. Martin Vítek, Ph.D. (člen)
Supervisor’s reportIng. Nikola Papež, Ph.D.
Grade proposed by supervisor: A
Reviewer’s reportdoc. Mgr. Zdenka Fohlerová, Ph.D.
Grade proposed by reviewer: A
Reasons for publication postponement
Publication of the final thesis has been postponed in compliance with the provisions of Section 47b (4) of Act No. 111/1998 Coll., on the Higher Education Institutions and on amendments and supplements to other acts, as amended.
Intellectual property protection for the ongoing patent proceedings regarding the aforementioned method and apparatus. Ensuring the exclusivity of data for the peer-review process and subsequent publication in a peer-reviewed scientific journal, which requires that the results not be disclosed beforehand.
Responsibility: Mgr. et Mgr. Hana Odstrčilová