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An improved interaction between human and machine is vital for the ongoing automation of our modern life style. However, since practically no machines would be working without the presence of sensors, humans are heavily dependent on sensor technology.
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This dissertation by Smita G. Rao investigates alloy-based thin films synthesized through magnetron sputtering, focusing on the CrFeCoNi nitrogen-containing system. Utilizing both theoretical and experimental methods, the study explores phase formation in this system, particularly the stabilization of different crystal structures depending on nitrogen content and growth conditions. The research highlights the importance of phase diagrams for developing complex structures for applications such as irradiation resistance and epitaxial films. The work underscores the role of kinetic energy in film growth, provided by ion bombardment, to improve epitaxy quality.
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This licentiate thesis by Faezeh Alijan Farzad focuses on the epitaxial growth of oxide and nitride thin films, particularly NiO and CrN, using magnetron sputtering. The study investigates the structural and optical properties of these films on different substrates, such as Si(100) and sapphire. The research aims to advance the understanding of epitaxial growth, film orientation, and their respective properties, which are crucial for applications in electronic devices, sensors, and batteries. The intended audience includes researchers and professionals in materials science and thin film physics.
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The book discusses the experimental and theoretical studies related to a thin film deposition technique called high power impulse magnetron sputtering (HiPIMS). It delves into the plasma properties and their influence on the coating. The book further explores the dynamics of the charged species and their effect on thin film growth in the HiPIMS process. It also investigates the energy flux and the complete discharge regime. Using the results and ideas from the fundamental plasma, the book maps out different coating improvements, the concept of sideways deposition of thin films, and the densification process of thin films using HiPIMS.
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This dissertation by Asim Aijaz explores the synthesis of carbon-based and metal-oxide thin films using high power impulse magnetron sputtering (HiPIMS). The work is divided into two parts, focusing on the deposition of carbon-based and metal-oxide thin films. For carbon-based films, strategies were developed to enhance the degree of carbon ionization and deposition rates. This includes using a higher ionization potential buffer gas and coupling HiPIMS with direct current magnetron sputtering (DCMS). For metal-oxide films, the study investigates reactive HiPIMS discharges for systems like Ti-O and Al-O, and their influence on film properties such as phase composition and optical characteristics. The dissertation targets researchers and professionals in the fields of material science and plasma physics, providing insights into advanced film deposition techniques and their applications.
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This licentiate thesis by Babak Bakhit explores the growth and properties of transition metal diboride thin films using magnetron sputtering with metal-ion irradiation. The research focuses on controlling the crystalline phase and stoichiometry of these materials, which are known for their high melting temperatures and suitability in extreme thermal and chemical environments. The thesis highlights the potential applications of transition metal diborides in aerospace, nuclear reactors, and advanced electronics due to their unique combination of hardness, thermal conductivity, and electrical properties. The work is supported by various research grants and contributes to the field of materials science by addressing challenges in film composition and proposing strategies to enhance both hardness and toughness of the films. The intended audience includes researchers and professionals in materials science and engineering.
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This thesis by Rui Shu examines the development and properties of high entropy ceramic films, specifically (TiNbZrTa)Nx, using reactive magnetron sputtering. The research focuses on the effects of deposition parameters like substrate temperature and nitrogen flow ratio on the microstructure and mechanical, electrical, and corrosion-resistant properties of these films. Key findings include the correlation between nitrogen content and corrosion resistance, as well as the structural transitions observed at various deposition temperatures. The study aims to advance the understanding of protective nitride films, with potential applications in corrosion-resistant coatings for fuel cells and batteries. The work is a part of doctoral studies in Materials Science at Linköping University and supported by various academic and industrial collaborations.
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This dissertation by Rommel Paulo B. Viloan explores innovative methods to enhance ion energy in thin film deposition using high-power impulse magnetron sputtering (HiPIMS). The study investigates strategies to increase ion energies without substrate bias, focusing on bipolar HiPIMS to optimize ion acceleration. The work examines the impact on crystal growth and film properties, such as stress and hardness, specifically in TiN films. The research aims to provide solutions for industrial applications where substrate biasing is challenging. Intended for a scientific audience, it contributes to advancements in thin film technology and material science.
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This dissertation by Rui Shu investigates the process-structure-property relationships of refractory high-entropy alloys and nitrides, primarily synthesized through magnetron sputtering. The research focuses on understanding the effects of substrate temperature and nitrogen flow on the mechanical, electrical, and corrosion-resistant properties of TiZrNbTaNx nitrides. The study also explores the impact of ion energy and metal substitution on the evolution of high-entropy nitride films. Furthermore, the dissertation examines structural stability and elemental segregation under irradiation, as well as the superconducting properties of these materials. The work is intended for professionals and researchers in materials science, particularly those interested in the development and application of high-entropy materials for advanced coatings and superconductors.
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This dissertation explores the reactive high power impulse magnetron sputtering (HiPIMS) of metal oxides, focusing on understanding the fundamental mechanisms and improving film deposition processes. The research investigates the stabilization of HiPIMS processes in the transition zone between metal and compound modes for materials such as Al-O, Ce-O, and Ti-O. It compares these processes with direct current magnetron sputtering (DCMS) and examines the impact of various sputtering conditions. Key findings include the elimination or suppression of the hysteresis effect, leading to stable deposition with higher rates. The study also analyzes the discharge current behavior, ion compositions, and energy distributions, providing insights into film growth and properties. The work aims to demonstrate high-quality metal oxide film growth without feedback control systems and is intended for researchers in plasma coatings and materials science.
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