Collective Behavior Of Interacting Magnetic Nanoparticles
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| Author | : Noppi Widjaja |
| Publisher | : |
| Total Pages | : 121 |
| Release | : 2008 |
| Genre | : |
| ISBN | : |
In the past, Low Dimensional Materials by Design group at ORNL in collaboration with students from the University of Tennessee, have successfully tailored and studied magnetic nanostructures in 2D, 1D and 0D spatial confinement on Cu(111) substrates. They observed a striking collective ferromagnetic long-range order in Fe-nanodots on Cu(111) surface which can be stabilized through the indirect exchange interaction mediated by the substrate. This type of magnetic interaction was expected to have little effect on promoting a global ferromagnetic order in a randomly distributed dot assembly. It is for certain that we need a better understanding of the relative roles of magnetic anisotropy and magnetic interaction in the magnetism of reduced dimensionality, in general, and nanodot assemblies, in particular. With this accomplishment in mind, I'm trying to study the collective behavior of interacting magnetic nanoparticles. We proposed the following experiments to quantify the relative roles of magnetic anisotropy, dipolar interaction and indirect exchange interaction on the collective magnetic behavior of nanodot assemblies. They consist of two main projects: a) study how the indirect exchange interaction is affected by modifying the surface states. The interaction is observed through the changes in the critical temperature (T[subscript c]) of Fe dots as a function of miscut angle Cu curved substrate. Depending on the buffer layer (Xe) coverage, we observed a critical terrace width above which the T[subscript c] slightly increases and below which the T[subscript c] decreases rapidly. In other words, the (T[subscript c]) depends largely on the Cu(111) miscut angle. b) study the role of magnetic anisotropy and dipolar interaction. We used Co dots on TiO2(110) substrate as a prototype. We observed significant perpendicular magnetic anisotropy with perpendicular easy axis for both large and small dot densities with no sign of hysteresis observed down to 2 K.
| Author | : Qianqian Wang |
| Publisher | : CRC Press |
| Total Pages | : 360 |
| Release | : 2024-01-26 |
| Genre | : Technology & Engineering |
| ISBN | : 100383065X |
Collective Behavior of Magnetic Micro/Nanorobots: Control, Imaging, and Applications reviews recent advances in the design and construction of magnetic collective micro/nanorobot systems, and promotes the bridging of the gap between their theoretical investigation and practical applications. By summarizing the recent progress in control, imaging, and biomedical applications of collective micro/nanorobots, the authors show the big picture of micro/nanorobotics and the roadmap of collective micro/nanorobots. They then discuss the control, imaging, and biomedical applications of collective micro/nanorobots, respectively, demonstrating the state-of-the-art techniques and ideas for designing systems of collective micro/nanorobots that can help researchers have a better understanding and further stimulate the development of such an exciting field. This book is suitable for scientists, engineers, and students involved in the study of robotics, control, materials, and mechanical/electrical engineering.
| Author | : Klaus D. Sattler |
| Publisher | : CRC Press |
| Total Pages | : 718 |
| Release | : 2016-04-19 |
| Genre | : Science |
| ISBN | : 1420075454 |
In the 1990s, nanoparticles and quantum dots began to be used in optical, electronic, and biological applications. Now they are being studied for use in solid-state quantum computation, tumor imaging, and photovoltaics. Handbook of Nanophysics: Nanoparticles and Quantum Dots focuses on the fundamental physics of these nanoscale materials and struct
| Author | : Dino Fiorani |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 309 |
| Release | : 2006-06-09 |
| Genre | : Science |
| ISBN | : 0387260188 |
A collection of articles on different approaches to the investigation of surface effects on nanosized magnetic materials, with special emphasis on magnetic nanoparticles. The book provides an overview of progress in the field through recent results.
| Author | : Raluca Maria Fratila |
| Publisher | : Elsevier |
| Total Pages | : 384 |
| Release | : 2018-11-30 |
| Genre | : Science |
| ISBN | : 0128139293 |
Nanomaterials for Magnetic and Optical Hyperthermia Applications focuses on the design, fabrication and characterization of nanomaterials (magnetic, gold and hybrid magnetic-gold nanoparticles) for in vitro and in vivo hyperthermia applications, both as standalone and adjuvant therapy in combination with chemotherapy. The book explores the potential for more effective cancer therapy solutions through the synergistic use of nanostructured materials as magnetic and optical hyperthermia agents and targeted drug delivery vehicles, while also discussing the challenges related to their toxicity, regulatory and translational aspects. In particular, the book focuses on the design, synthesis, biofunctionalization and characterization of nanomaterials employed for magnetic and optical hyperthermia. This book will be an important reference resource for scientists working in the areas of biomaterials and biomedicine seeking to learn about the potential of nanomaterials to provide hyperthermia solutions. Explores the design of efficient nanomaterials for hyperthermia applications, allowing readers to make informed materials selection decisions Discusses the biofunctionalization of a range of nanomaterials and their interaction with living systems Provides an overview of the current clinical applications of nanomaterials in hyperthermia treatment
| Author | : Dragan Uskoković |
| Publisher | : Institute of Technical Sciences of the Serbian Academy of Sciences and Arts |
| Total Pages | : 270 |
| Release | : 2010-08-01 |
| Genre | : Science |
| ISBN | : 8680321257 |
The First Conference on materials science and engineering, including physics, physical chemistry, condensed matter chemistry, and technology in general, was held in September 1995, in Herceg Novi. An initiative to establish Yugoslav Materials Research Society was born at the conference and, similar to other MR societies in the world, the programme was made and objectives determined. The Yugoslav Materials Research Society (Yu-MRS), a nongovernment and non-profit scientific association, was founded in 1997 to promote multidisciplinary goal-oriented research in materials science and engineering. The main task and objective of the Society has been to encourage creativity in materials research and engineering to reach a harmonic coordination between achievements in this field in our country and analogous activities in the world with an aim to include our country into global international projects. Until 2003, Conferences were held every second year and then they grew into Annual Conferences that were traditionally held in Herceg Novi in September of every year. In 2007 Yu-MRS formed two new MRS: MRS-Serbia (official successor of Yu-MRS) and MRS-Montenegro (in founding). In 2008, MRS – Serbia became a member of FEMS (Federation of European Materials Societies). The Twelfth Annual Conference YUCOMAT 2010 was held on September 6-10, 2010 in Heceg Novi, Montenegro
| Author | : Turab Lookman |
| Publisher | : Springer |
| Total Pages | : 283 |
| Release | : 2018-11-01 |
| Genre | : Science |
| ISBN | : 3319969145 |
This book provides a comprehensive introduction to ferroics and frustrated materials. Ferroics comprise a range of materials classes with functionalities such as magnetism, polarization, and orbital degrees of freedom and strain. Frustration, due to geometrical constraints, and disorder, due to chemical and/or structural inhomogeneities, can lead to glassy behavior, which has either been directly observed or inferred in a range of materials classes from model systems such as artificial spin ice, shape memory alloys, and ferroelectrics to electronically functional materials such as manganites. Interesting and unusual properties are found to be associated with these glasses and have potential for novel applications. Just as in prototypical spin glass and structural glasses, the elements of frustration and disorder lead to non-ergodocity, history dependence, frequency dependent relaxation behavior, and the presence of inhomogeneous nano clusters or domains. In addition, there are new states of matter, such as spin ice; however, it is still an open question as to whether these systems belong to the same family or universality class. The purpose of this work is to collect in a single volume the range of materials systems with differing functionalities that show many of the common characteristics of geometrical frustration, where interacting degrees of freedom do not fit in a lattice or medium, and glassy behavior is accompanied by additional presence of disorder. The chapters are written by experts in their fields and span experiment and theory, as well as simulations. Frustrated Materials and Ferroic Glasses will be of interest to a wide range of readers in condensed matter physics and materials science.
| Author | : Michel Andre Aegerter |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 929 |
| Release | : 2011-06-10 |
| Genre | : Technology & Engineering |
| ISBN | : 1441975896 |
Aerogels are the lightest solids known. Up to 1000 times lighter than glass and with a density as low as only four times that of air, they show very high thermal, electrical and acoustic insulation values and hold many entries in Guinness World Records. Originally based on silica, R&D efforts have extended this class of materials to non-silicate inorganic oxides, natural and synthetic organic polymers, carbon, metal and ceramic materials, etc. Composite systems involving polymer-crosslinked aerogels and interpenetrating hybrid networks have been developed and exhibit remarkable mechanical strength and flexibility. Even more exotic aerogels based on clays, chalcogenides, phosphides, quantum dots, and biopolymers such as chitosan are opening new applications for the construction, transportation, energy, defense and healthcare industries. Applications in electronics, chemistry, mechanics, engineering, energy production and storage, sensors, medicine, nanotechnology, military and aerospace, oil and gas recovery, thermal insulation and household uses are being developed with an estimated annual market growth rate of around 70% until 2015. The Aerogels Handbook summarizes state-of-the-art developments and processing of inorganic, organic, and composite aerogels, including the most important methods of synthesis, characterization as well as their typical applications and their possible market impact. Readers will find an exhaustive overview of all aerogel materials known today, their fabrication, upscaling aspects, physical and chemical properties, and most recent advances towards applications and commercial products, some of which are commercially available today. Key Features: •Edited and written by recognized worldwide leaders in the field •Appeals to a broad audience of materials scientists, chemists, and engineers in academic research and industrial R&D •Covers inorganic, organic, and composite aerogels •Describes military, aerospace, building industry, household, environmental, energy, and biomedical applications among others
| Author | : Panagiotis Grammatikopoulos |
| Publisher | : Elsevier |
| Total Pages | : 244 |
| Release | : 2020-09-30 |
| Genre | : Technology & Engineering |
| ISBN | : 0128214988 |
Due to their small size and their dependence on very fast phenomena, nanomaterials are ideal systems for computational modelling. This book provides an overview of various nanosystems classified by their dimensions: 0D (nanoparticles, QDs, etc.), 1D (nanowires, nanotubes), 2D (thin films, graphene, etc.), 3D (nanostructured bulk materials, devices). Fractal dimensions, such as nanoparticle agglomerates, percolating films and combinations of materials of different dimensionalities are also covered (e.g. epitaxial decoration of nanowires by nanoparticles, i.e. 0D+1D nanomaterials). For each class, the focus will be on growth, structure, and physical/chemical properties. The book presents a broad range of techniques, including density functional theory, molecular dynamics, non-equilibrium molecular dynamics, finite element modelling (FEM), numerical modelling and meso-scale modelling. The focus is on each method’s relevance and suitability for the study of materials and phenomena in the nanoscale. This book is an important resource for understanding the mechanisms behind basic properties of nanomaterials, and the major techniques for computational modelling of nanomaterials. Explores the major modelling techniques used for different classes of nanomaterial Assesses the best modelling technique to use for each different type of nanomaterials Discusses the challenges of using certain modelling techniques with specific nanomaterials
| Author | : Jeffrey N. Anker |
| Publisher | : CRC Press |
| Total Pages | : 356 |
| Release | : 2020-12-17 |
| Genre | : Technology & Engineering |
| ISBN | : 1439839697 |
Biomedical Applications of Magnetic Particles discusses fundamental magnetic nanoparticle physics and chemistry and explores important biomedical applications and future challenges. The first section presents the fundamentals of the field by explaining the theory of magnetism, describing techniques to synthesize magnetic particles, detailing methods to characterize magnetic particles, and quantitatively describing the applied magnetic forces, torques, and the resultant particle motions. The second section describes the wide range of biomedical applications, including chemical sensors, cellular actuators, drug delivery, magnetic hyperthermia, magnetic resonance imaging contrast enhancement, and toxicity. Additional key features include: Covers both introduction to physics and characterization of magnetic nanoparticles and the state of the art in biomedical applications Authoritative reference for scientists and engineers for all new or old to the field Describes how the size of magnetic nanoparticles affects their magnetic properties, colloidal properties, and biological properties. Written by a team of internationally respected experts, this book provides an up-to-date authoritative reference for scientists and engineers.
