An Investigation Into Tunable Emission With Multidopant Upconverting Nanoparticles Using Core Shell Structures PDF Download
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| Author | : Yue Qu |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2021 |
| Genre | : |
| ISBN | : |
Download An Investigation Into Tunable Emission with Multidopant Upconverting Nanoparticles Using Core-shell Structures Book in PDF, ePub and Kindle
Upconverting nanoparticles (UCNPs) are trivalent lanthanide doped inorganic nanocrystals which undergo sequential multiphoton absorption, converting near infrared radiation to emissions in the ultraviolet and visible regions. The unique optical properties of UCNPs make them attractive for the development of tools for bioanalysis, theranostics, and sensor technology. These properties include the characteristic narrow emission peaks resulting from the choice of host lattice material, dopants ratios/type, and core-shell design. One of the challenges in designing UCNPs for biomedical and theranostics applications is co-doping the material with multiple activators to ameliorate the decrease of luminescence caused by quenching mechanisms. Herein, the design of multidopant UCNPs will be explored using a multilayer shell design. The intention is investigation of energy migration mechanisms within the material to learn to control luminescence properties such as the selection of multiple emission wavelengths and the relative intensities at such wavelengths.
| Author | : Vijay Kumar |
| Publisher | : Springer Nature |
| Total Pages | : 495 |
| Release | : 2023-09-17 |
| Genre | : Science |
| ISBN | : 9819939135 |
Download Upconversion Nanoparticles (UCNPs) for Functional Applications Book in PDF, ePub and Kindle
This book explores upconversion nanoparticles (UCNPs) at both, the fundamental as well as applied levels, for functional applications. It provides a broad perspective about the synthesis approaches of UCNPs with the preferred size, improved and tunable upconversion luminescence, along with the combined multifunctionality for various applications. It highlights the fundamentals and systematic developments in the tuning of UC emission and surface engineering of UCNPs that make UCNPs convenient for use in a large range of applications. Moreover, it gives an understanding of the imposed limitations and challenges associated with these methods to achieve the desired performance in targeted applications. It also includes the latest multifunctional lanthanide-based UCNPs, which efficiently convert low-energy photons into high-energy photons, and their applications in fluorescent microscopy, deep-tissue bioimaging, nanomedicine, optogenetics, solid-state lighting, solar cells, security labeling, and volumetric display.
| Author | : Philipp U. Bastian |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2022 |
| Genre | : |
| ISBN | : |
Download Core-shell Upconversion Nanoparticles - Investigation of Dopant Intermixing and Surface Modification Book in PDF, ePub and Kindle
Frequency upconversion nanoparticles (UCNPs) are inorganic nanocrystals capable to up-convert incident photons of the near-infrared electromagnetic spectrum (NIR) into higher energy photons. These photons are re-emitted in the range of the visible (Vis) and even ultraviolet (UV) light. The frequency upconversion process (UC) is realized with nanocrystals doped with trivalent lanthanoid ions (Ln(III)). The Ln(III) ions provide the electronic (excited) states forming a ladder-like electronic structure for the Ln(III) electrons in the nanocrystals. The absorption of at least two low energy photons by the nanoparticle and the subsequent energy transfer to one Ln(III) ion leads to the promotion of one Ln(III) electron into higher excited electronic states. One high energy photon will be emitted during the radiative relaxation of the electron in the excited state back into the electronic ground state of the Ln(III) ion. The excited state electron is the result of the previous absorption of at least two low energy photons. [...].
| Author | : Suprakas Sinha Ray |
| Publisher | : Springer |
| Total Pages | : 167 |
| Release | : 2018-09-07 |
| Genre | : Science |
| ISBN | : 3319977792 |
Download Processing of Polymer-based Nanocomposites Book in PDF, ePub and Kindle
Processing of polymer nanocomposites usually requires special attention since the resultant structure—micro- and nano-level, is directly influenced by among other factors, polymer/nano-additive chemistry and the processing strategy. This book consolidates knowledge, from fundamental to product development, on polymer nanocomposites processing with special emphasis on the processing-structure-property-performance relationships in a wide range of polymer nanocomposites. Furthermore, this book focuses on emerging processing technologies such as electrospinning, which has very exciting applications ranging from medical to filtration. Additionally, the important role played by the nanoparticles in polymer blends structures has been illustrated in the current book, with special focus on fundamental aspects and properties of nanoparticles migration and interface crossing in immiscible polymer blend nanocomposites. This book introduces readers to nanomaterials and polymer nanocomposites processing. After defining nanoparticles and polymer nanocomposites and discussing environmental aspects, the second chapter focuses on the synthesis and functionalization of nanomaterials with applications in polymers. A brief overview on nanoclay and nanoclay-containing polymer nanocomposites is provided in third chapter. The fourth chapter provides an overview of the polymer nanocomposites structural elucidation techniques, such as X-ray diffraction and scattering, microscopy and spectroscopy, rheology. The fifth chapter is dedicated to the polymer nanocomposites processing technologies, among which electrospinning, which has very exciting applications ranging from medical to filtration. The last chapter provides an overview on how melt-processing strategy impact structure and mechanical properties of polymer nanocomposites by taking polypropylene-clay nanocomposite as a model system. The book is useful to undergraduate and postgraduate students (polymer engineering, materials science & engineering, chemical & process engineering), as well as research & development personnel, engineers, and material scientists.
| Author | : Hilmi Volkan Demir |
| Publisher | : Cambridge University Press |
| Total Pages | : 453 |
| Release | : 2018-11-22 |
| Genre | : Science |
| ISBN | : 1107145503 |
Download Applied Nanophotonics Book in PDF, ePub and Kindle
An accessible yet rigorous introduction to nanophotonics, covering basic principles, technology, and applications in lighting, lasers, and photovoltaics. Providing a wealth of information on materials and devices, and over 150 color figures, it is the 'go-to' guide for students in electrical engineering taking courses in nanophotonics.
| Author | : Kazuo Nakamoto |
| Publisher | : John Wiley & Sons |
| Total Pages | : 350 |
| Release | : 2008-12-22 |
| Genre | : Science |
| ISBN | : 9780470405796 |
Download Infrared and Raman Spectra of Inorganic and Coordination Compounds, Part A Book in PDF, ePub and Kindle
The Sixth Edition of this classic work comprises the most comprehensive and current guide to infrared and Raman spectra of inorganic, organometallic, bioinorganic, and coordination compounds. From fundamental theories of vibrational spectroscopy to applications in a variety of compound types, this has been extensively updated. New topics include the theoretical calculations of vibrational frequencies (DFT method), chemical synthesis by matrix co-condensation reactions, time-resolved Raman spectroscopy, and more. This volume is a core reference for chemists and medical professionals working with infrared or Raman spectroscopies and an excellent textbook for graduate courses.
| Author | : Sheng Lin |
| Publisher | : Elsevier |
| Total Pages | : 440 |
| Release | : 2012-12-02 |
| Genre | : Science |
| ISBN | : 0323150276 |
Download Radiationless Transitions Book in PDF, ePub and Kindle
Radiationless Transitions is a critical discussion of research studies on the theory and experiments in radiationless transitions. This book is composed of nine chapters, and begins with discussions on the theory and experiment of photophysical processes of single vibronic levels and/or single rovibronic levels. The subsequent chapters deal with the spectroscopic investigations of intramolecular vibrational relaxation; the dynamics of molecular excitation by light; and the photophysical processes of small molecules in condensed phase. The discussions then shift to the high pressure effects on molecular luminescence and the internal conversion involving localized excitations, presenting one qualitative and one quantitative example, as well as the intersystem crossing with localized excitations. A chapter explores the energy transfer processes that occur after a molecule in solution is excited by light, with an emphasis on solid solutions in which the large amplitude molecular motion is largely quenched. This chapter also looks into the liquid solutions in which the molecules can translate and rotate under the influence of fluctuating forces from the liquid. The concluding chapter focuses on ultrafast processes. Researchers in the fields of physics, chemistry, and biology will benefit from this book.
| Author | : Elvira Fortunato |
| Publisher | : |
| Total Pages | : 337 |
| Release | : |
| Genre | : |
| ISBN | : |
Download Transparent Electronics Book in PDF, ePub and Kindle
| Author | : Hans Kellerer |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 557 |
| Release | : 2013-03-19 |
| Genre | : Mathematics |
| ISBN | : 3540247777 |
Download Knapsack Problems Book in PDF, ePub and Kindle
Thirteen years have passed since the seminal book on knapsack problems by Martello and Toth appeared. On this occasion a former colleague exclaimed back in 1990: "How can you write 250 pages on the knapsack problem?" Indeed, the definition of the knapsack problem is easily understood even by a non-expert who will not suspect the presence of challenging research topics in this area at the first glance. However, in the last decade a large number of research publications contributed new results for the knapsack problem in all areas of interest such as exact algorithms, heuristics and approximation schemes. Moreover, the extension of the knapsack problem to higher dimensions both in the number of constraints and in the num ber of knapsacks, as well as the modification of the problem structure concerning the available item set and the objective function, leads to a number of interesting variations of practical relevance which were the subject of intensive research during the last few years. Hence, two years ago the idea arose to produce a new monograph covering not only the most recent developments of the standard knapsack problem, but also giving a comprehensive treatment of the whole knapsack family including the siblings such as the subset sum problem and the bounded and unbounded knapsack problem, and also more distant relatives such as multidimensional, multiple, multiple-choice and quadratic knapsack problems in dedicated chapters.
| Author | : Ashutosh Kumar Shukla |
| Publisher | : Elsevier |
| Total Pages | : 548 |
| Release | : 2018-11-26 |
| Genre | : Technology & Engineering |
| ISBN | : 0081025807 |
Download Green Synthesis, Characterization and Applications of Nanoparticles Book in PDF, ePub and Kindle
Green Synthesis, Characterization and Applications of Nanoparticles shows how eco-friendly nanoparticles are engineered and used. In particular, metal nanoparticles, metal oxide nanoparticles and other categories of nanoparticles are discussed. The book outlines a range of methodologies and explores the appropriate use of each. Characterization methods include spectroscopic, microscopic and diffraction methods, but magnetic resonance methods are also included as they can be used to understand the mechanism of nanoparticle synthesis using organisms. Applications covered include targeted drug delivery, water purification and hydrogen generation. This is an important research resource for those wishing to learn more about how eco-efficient nanoparticles can best be used. Theoretical details and mathematical derivations are kept to a necessary minimum to suit the need of interdisciplinary audiences and those who may be relatively new to the field. Explores recent trends in growth, characterization, properties and applications of nanoparticles Gives readers an understanding on how they are applied through the use of case studies and examples Assesses the advantages and disadvantages of a variety of synthesis and characterization techniques for green nanoparticles in different situations
