Ion Tiginyanu – författare

This book gathers the proceedings of the 4th International Conference on Nanotechnologies and Biomedical Engineering, held on September 18-21, 2019, in Chisinau, Republic of Moldova. The book offers a timely snapshot of cutting-edge, multidisciplinary research and developments in the field of biomedical and nano-engineering.

This book gathers the proceedings of the 5th International Conference on Nanotechnologies and Biomedical Engineering, held online on November 3–5, 2021, from Chisinau, Republic of Moldova.

This book reports on advances in fundamental and applied research at the interface between nanotechnology and biomedical engineering. Gathering peer-reviewed contributions to the 6th International Conference on Nanotechnologies and Biomedical Engineering, ICNBME held on September 20-23, 2023, in Chisinau, Republic of Moldova, this first volume of the proceedings focuses on nanotechnologies and nano-biomaterials, and their applications in medicine.  With a good balance of theory and practice, the book offers a timely snapshot of multidisciplinary research at the interface between physics, chemistry, biomedicine, materials science, and engineering.

This book reports on advances in fundamental and applied research at the interface between nanotechnology and biomedical engineering. Gathering peer-reviewed contributions to the 6th International Conference on Nanotechnologies and Biomedical Engineering, ICNBME held on September 20-23, 2023, in Chisinau, Republic of Moldova, this second volume of the proceedings focuses on clinical engineering and instrumentation, bioinformatics, image and signal processing techniques, and new technologies for medical diagnosis, treatment and personalised medicine.  With a good balance of theory and practice, the book offers a timely snapshot of multidisciplinary research at the interface between physics, chemistry, biomedicine, materials science, and engineering.

This book reports on advances in fundamental and applied research at the interface between nanoscience, materials engineering, and biomedical applications. Gathering peer-reviewed contributions to the 7th International Conference on Nanotechnologies and Biomedical Engineering, ICNBME 2025, held on October 7–10, 2025, in Chisinau, Republic of Moldova, this first volume of the proceedings focuses on experimental and theoretical advances in nanostructured materials, with an emphasis on semiconducting oxides, hybrid nanocomposites, and functionalized nanoparticles tailored for use in medical sensing, diagnostics, and therapy. Special emphasis is placed on the integration of nanotechnologies with biological systems, highlighting the role of biocompatible materials in cellular engineering, biosensing, and targeted drug delivery. Several chapters deal with chemical and electrochemical sensors based on nanostructured oxides and polymer-coated composites, photonic nanocomposites, metamaterials, and direct holographic materials, as well as thermoelectric converters, energy-efficient oxide heterostructures, and eco-nanotechnologies. All in all, this book offers a timely snapshot of research and development of bio-nanotechnologies and biocompatible materials for various applications.

This book reports on advances in fundamental and applied research at the interface between biomedical research, data science, molecular diagnostics, and material engineering. Gathering peer-reviewed contributions to the 7th International Conference on Nanotechnologies and Biomedical Engineering, ICNBME 2025, held on October 7–10, 2025, in Chisinau, Republic of Moldova, this second volume of the proceedings focuses on technologies for medical imaging, tissue engineering, therapeutic and rehabilitation devices, and diagnostic tools. An emphasis is given to applications in personalized medicine, disease prevention, and patient care. Key topics include genetic and biomarker-based diagnostics, predictive modeling of disease progression, and computational simulations of biological systems. Further, this book covers applications of artificial intelligence in healthcare, with a focus on data security, patient stratification, and decision support systems. Novel biomaterials for tissues engineering, technologies for non-invasive monitoring, and mobile health solutions are also discussed throughout the book. With a good balance of theory and practice, this book offers extensive  and timely information for students and specialists in biomedical engineering, clinical research, health informatics, and medical technologies.

This bookis focused on recent advances in the development of thin films for photovoltaicapplications, TiO2/WO3 bi-layers for applications with enhanced photo-catalyticproperties, nanometer oxide and hydroxide films for anticorrosive coatings,surface passivation in chemical industries, micro- and nanoelectronics,trilayers of metglas and lead free piezoelectrics for magnetic field sensors,current sensors, spintronics, microwave and read/write devices. Dilutedferromagnetic alloy films are also considered for superconducting spintronicsbased on superconducting spin-valves. Thermal properties of segmented nanowiresare analyzed with respect to thermoelectric applications. Recent advances intemplate production of nanocomposites are also reviewed with particular focuson technologies for template assisted formation of metal nanotubes. Someelements related to abrasive flow machining (AFM), specifically state of theart elements of technological systems and construction of equipment arepresented. The book is written for researchers in materials science,nanotechnologies, PhD students and graduate student.

This bookis focused on recent advances in the development of thin films for photovoltaicapplications, TiO2/WO3 bi-layers for applications with enhanced photo-catalyticproperties, nanometer oxide and hydroxide films for anticorrosive coatings,surface passivation in chemical industries, micro- and nanoelectronics,trilayers of metglas and lead free piezoelectrics for magnetic field sensors,current sensors, spintronics, microwave and read/write devices. Dilutedferromagnetic alloy films are also considered for superconducting spintronicsbased on superconducting spin-valves. Thermal properties of segmented nanowiresare analyzed with respect to thermoelectric applications. Recent advances intemplate production of nanocomposites are also reviewed with particular focuson technologies for template assisted formation of metal nanotubes. Someelements related to abrasive flow machining (AFM), specifically state of theart elements of technological systems and construction of equipment arepresented. The book is written for researchers in materials science,nanotechnologies, PhD students and graduate student.

The main intention of the editors of the book is the demonstration of the intrinsic correlation and mutual influence of three important components of nanoscience: new phenomena – nanomaterials – nanodevices. This is the organizing concept of the book. To discover new phenomena it is necessary to develop novel nanotechnological processes for fabrication of nanomaterials. Nanostructures and new phenomena serve as the base for the development of novel nanoelectronic devices and systems. The articles selected for the book illustrate this interrelation.

The main intention of the editors of the book is the demonstration of the intrinsic correlation and mutual influence of three important components of nanoscience: new phenomena – nanomaterials – nanodevices. This is the organizing concept of the book. To discover new phenomena it is necessary to develop novel nanotechnological processes for fabrication of nanomaterials. Nanostructures and new phenomena serve as the base for the development of novel nanoelectronic devices and systems. The articles selected for the book illustrate this interrelation.

This book on pressure-induced phase transitions in AB2X4 chalcogenide compounds deals with one important AmBnXp material. The interest in these materials is caused by their properties. The results are discussed for three main groups of structural families: cubic-spinel structures, defective tetragonal structures, and other structures like layered and wurtzite-type modifications. A systematic analysis of the behavior of cubic (spinel), tetragonal (defect chalcopyrites and stannites) and other crystal modifications of AB2X4 compounds under hydrostatic pressure is performed. The behavior of AIIAl2S4, AIIGa2S4, AIIAl2Se4 and AIIGa2Se4 compounds with defective tetragonal structures, compounds with layered and wurtzite structures under hydrostatic pressure and the pressure dependence of the band gap, lattice parameters, interatomic distances, vibrational modes and pressure-induced phase transitions is discussed. Many of these compounds, except oxide spinels, undergo a pressure-induced phase transition towards the rocksalt-type structure. The phase transition is preceded by disorder in the cation sublattice. The dependence of the transition pressure to the rocksalt-type structure as a function of the compound ionicity and the size criterion is analyzed.  At high pressures, all ordered-vacancy compounds are found to exhibit a band anticrossing between several conduction bands that leads to a strong decrease of its pressure coefficient and consequently to a strong non-linear pressure dependence of the direct bandgap energy. Theoretical studies of phase transitions in several ordered-vacancy compounds reveal that the existence of ordered vacancies alter the cation-anion bond distances and their compressibilities. The book is written for students, Ph D. students and specialists in materials science, phase transitions and new materials.

This book on pressure-induced phase transitions in AB2X4 chalcogenide compounds deals with one important AmBnXp material. The interest in these materials is caused by their properties. The results are discussed for three main groups of structural families: cubic-spinel structures, defective tetragonal structures, and other structures like layered and wurtzite-type modifications. A systematic analysis of the behavior of cubic (spinel), tetragonal (defect chalcopyrites and stannites) and other crystal modifications of AB2X4 compounds under hydrostatic pressure is performed. The behavior of AIIAl2S4, AIIGa2S4, AIIAl2Se4 and AIIGa2Se4 compounds with defective tetragonal structures, compounds with layered and wurtzite structures under hydrostatic pressure and the pressure dependence of the band gap, lattice parameters, interatomic distances, vibrational modes and pressure-induced phase transitions is discussed. Many of these compounds, except oxide spinels, undergo a pressure-induced phase transition towards the rocksalt-type structure. The phase transition is preceded by disorder in the cation sublattice. The dependence of the transition pressure to the rocksalt-type structure as a function of the compound ionicity and the size criterion is analyzed.  At high pressures, all ordered-vacancy compounds are found to exhibit a band anticrossing between several conduction bands that leads to a strong decrease of its pressure coefficient and consequently to a strong non-linear pressure dependence of the direct bandgap energy. Theoretical studies of phase transitions in several ordered-vacancy compounds reveal that the existence of ordered vacancies alter the cation-anion bond distances and their compressibilities. The book is written for students, Ph D. students and specialists in materials science, phase transitions and new materials.