Lanthanide-doped nanoparticles constitute a versatile family of photoluminescent local nanoprobes. In this work, we study the photoluminescence of Eu3+-doped NaYF4 nanorods characterized by highly polarized spectra. We develop a full theoretical model and paraxial approximation for nanorod dipole emission. We measure the photoluminescence of individual nanorods by fluorescence confocal microscopy and determine some of their intrinsic optical properties. We also determine the nature (electric or magnetic) and orientations of dipoles moments of the optical transitions used for nanoprobing in the visible range.In addition to the full theoretical model and the paraxial approximation, Fourier microscopy provides a third method to determine the dipole moment angle and but also gives access to the efective height of the nanorods. We also clarify the role of the electric and magnetic transition, including Stark sublevels in the formation of the Fourier plane images, in contrast to the literature.Finally, we use the nanorods as probes for the local density of optical states by performing a Drexhage-like experiment. We study the photoluminescence emitted by the nanorods, focusing on the transitions 5D0 →7F1, 5D0 →7F2 and 5D0 →7F4, as a function of the distance to a gold mirror. We determine the branching electric/magnetic ratios, the oscillators strengths and the quantum yield of these transitions. We finally demonstrate that the nanorods can be used as a vectorial probe of the electric and magnetic contributions to the local density of optical states (LDOS).

Spectroscopy of Lanthanide Doped Oxide Materials provides a comprehensive overview on the most essential characterization techniques of these materials, along with their key applications. The book describes the application of optical spectroscopy of lanthanides doped inorganic phosphor hosts and gives information about their structure and morphology, binding energies, energy of transition and band gap. Also discussed are the properties and applications of rare earth doped inorganic materials and the barriers and potential solutions to enable the commercial realization of phosphors in important applications. The book reviews key information for those entering the field of phosphor research, along with the fundamental knowledge of the properties of transition series elements under UV/Visible/NIR light exposer. Low-cost materials methods to synthesize the materials and spectroscopic characterization methods are also detailed. Reviews the barriers and potential solutions to enable commercial realization of inorganic phosphors Discusses low-cost material methods to synthesize and characterize lanthanide doped oxide materials Provides readers with a comprehensive overview on key properties for the most relevant applications, such as lighting and display, energy conversion and solar cell devices

Lanthanide-Doped Luminescent Nanomaterials reviews the latest advances in the development of lanthanide-doped luminescent inorganic nanoparticles for potential bioapplications. This book covers the chemical and physical fundamentals of these nanoparticles, such as the controlled synthesis methodology, surface modification chemistry, optical physics, and their promising applications in diverse bioassays, with an emphasis on heterogeneous and homogeneous in-vitro biodetection of tumor biomarkers. This book is intended for those readers who are interested in systematically understanding the materials design strategy, optical behavior of lanthanide ions, and practical bioapplications of lanthanide nanoparticles. It primarily focuses on the interdisciplinary frontiers in chemistry, physics and biological aspects of luminescent nanomaterials. All chapters were written by scientists active in this field and for a broad audience, providing both beginners and advanced researchers with comprehensive information on the subject. Xueyuan Chen is a Professor at Fujian Institute of Research on the Structure of Matter (FJIRSM), Chinese Academy of Sciences. Yongsheng Liu is a Research Associate Professor at FJIRSM, Chinese Academy of Sciences. Datao Tu is a Research Assistant Professor at FJIRSM, Chinese Academy of Sciences.

Discover how metal-enhanced fluorescence is changing traditional concepts of fluorescence This book collects and analyzes all the current trends, opinions, and emerging hot topics in the field of metal-enhanced fluorescence (MEF). Readers learn how this emerging technology enhances the utility of current fluorescence-based approaches. For example, MEF can be used to better detect and track specific molecules that may be present in very low quantities in either clinical samples or biological systems. Author Chris Geddes, a noted pioneer in the field, not only explains the fundamentals of metal-enhanced fluorescence, but also the significance of all the most recent findings and models in the field. Metal-enhanced fluorescence refers to the use of metal colloids and nanoscale metallic particles in fluorescence systems. It offers researchers the opportunity to modify the basic properties of fluorophores in both near- and far-field fluorescence formats. Benefits of metal-enhanced fluorescence compared to traditional fluorescence include: Increased efficiency of fluorescence emission Increased detection sensitivity Protect against fluorophore photobleaching Applicability to almost any molecule, including both intrinsic and extrinsic chromophores Following a discussion of the principles and fundamentals, the author examines the process and applications of metal-enhanced fluorescence. Throughout the book, references lead to the primary literature, facilitating in-depth investigations into particular topics. Guiding readers from the basics to state-of-the-technology applications, this book is recommended for all chemists, physicists, and biomedical engineers working in the field of fluorescence.

Luminescence Thermometry: Methods, Materials, and Applications presents the state-of-the art applications of luminescence thermometry, giving a detailed explanation of luminescence spectroscopic schemes for the read-out of temperature, while also describing the diverse materials that are capable of sensing temperature via luminescence. Chapters cover the fundamentals of temperature, traditional thermometers and their figures of merit, a concise description of optical thermometry methods, luminescence and instrumentation, and an explanation of the ways in which increases in temperature quench luminescence. Additional sections focus on materials utilized for luminescence thermometry and the broad range of applications for luminescence thermometry, including temperature measurement at the nanoscale and the application of multifunctional luminescent materials. - Provides an overview of luminescence thermometry applications, including high-temperature, biomedical, nanoscale and multifunctional - Delves into luminescence thermometry by materials group, including Rare-earth and transition Metal Ion Doped, Semiconductors, Quantum Dots and Organic materials - Gives a concise introduction of the latest methods of temperature measurement, including luminescence spectroscopic schemes and methods of analysis

Upconversion Nanophosphors provides detailed information about various lanthanide-based upconversion nanoparticles and their application in different fields. It will also help solve fundamental and applied problems of inorganic phosphor materials showing upconversion behavior, as well as generate innovative ideas related to the application of inorganic phosphor materials. This book will prove to be an invaluable reference work for scientists, engineers, industrial experts, and masters and PhD students working in the field of upconversion and materials science. - Covers the synthesis and characterization of upconversion nanophosphors and their applications - Highlights which classes of upconversion materials are suitable for a specific application - Explores processes to engineer upconversion nanoparticles for state-of-the-art technologies, including upconversion labelling and counterfeiting, highly sensitive and selective biosensing, and upconversion-activated drug delivery

During recent years our enthusiasm for this field has continually increased. This book presents expert contributions describing the fundamental principles for the widespread use of radiative decay engineering in the biological sciences and nanotechnology.