Author, Institution: Mohammad Shak Sadi, Kaunas University of Technology
Science area, field of science: Technological Sciences, Materials Engineering, T008
Research supervisor: Assoc. Prof. Dr. Eglė Kumpikaitė (Kaunas University of Technology, Technological Sciences, Materials Engineering, T008)
Dissertation Defence Board of Materials Engineering Science Field:
Prof. Dr. Rimvydas Milašius (Kaunas University of Technology, Technological Sciences, Materials Engineering, T008) – chairperson
Senior Researcher Dr. Julija Baltušnikaitė-Guzaitienė (State Research Institute Center for Physical Sciences and Technology, Technological Sciences, Materials Engineering, T008)
Assoc. Prof. Dr. Marcin Barburski (Lodz University of Technology, Poland, Technological Sciences, Materials Engineering, T008)
Chief Researcher Dr. Šarūnas Meškinis (Kaunas University of Technology, Technological Sciences, Materials Engineering, T008)
Prof. Dr. Daiva Mikučionienė (Kaunas University of Technology, Technological Sciences, Materials Engineering, T008)
Dissertation defence meeting will be at Rectorate Hall of Kaunas University of Technology (K. Donelaičio 73-402, Kaunas)
The doctoral dissertation is available at the library of Kaunas University of Technology (Gedimino 50, Kaunas) and on the internet: M. Shak Sadi el. dissertation.pdf
© M. Shak Sadi, 2025 “The text of the thesis may not be copied, distributed, published, made public, including by making it publicly available on computer networks (Internet), reproduced in any form or by any means, including, but not limited to, electronic, mechanical or other means. Pursuant to Article 25(1) of the Law on Copyright and Related Rights of the Republic of Lithuania, a person with a disability who has difficulties in reading a document of a thesis published on the Internet, and insofar as this is justified by a particular disability, shall request that the document be made available in an alternative form by e-mail to doktorantura@ktu.lt.”
Annotation: This doctoral dissertation focuses on the development of different electro-conductive textiles for wearable sensing and heating applications. It addresses the need for lightweight, flexible, and durable alternatives to traditional rigid and bulky wearables by incorporating distinct conductive materials such as carbon nanotubes, polypyrrole, and copper into various textile structures (such as fiber, yarn, and fabric). The novelty of the dissertation lies in its eco-friendly modification of the textile surface with polydopamine to improve the adhesion of conductive particles and the use of waste poplar fibers to develop a novel sustainable textile substrate. These innovations enabled the development of fabric, fiber, and yarn-based electro-conductive textiles with greater conductivity, durability, and environmental sustainability. This dissertation briefly investigates the surface, electrical, mechanical, electromechanical, and electro-thermal properties of the developed composites, with a focus on improving performance dynamics, including stability and durability. Novel strain and EMG sensors, along with efficient low-voltage heating elements, were successfully developed and demonstrated high performance in real-time physiological monitoring and localized thermal regulation. The outcomes of this dissertation greatly contribute to advancing next-generation wearable electronic textiles by offering scalable, sustainable, and durable multifunctional electro-conductive textiles.