Download or read book Dynamically Variable Focal Length Microlens by Microfluidic and Electroactive Polymer Approaches microform written by Chen, Jackie Ching-Lung and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 2004 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research is on a development of a variable focusing microlens system. The studies of modern researchers have thrown new light on this subject, which has aroused intense interest in making tunable focusing microlenses. The most well-known methods are liquid crystal and electrowetting. Both methods require electrodes immersed in the electrolyte solution, causing severe optical distortion, and require complicated fabrication processes. Few attempts have thus far been developed to make variable focusing lens using other approaches.
Download or read book Dynamically Variable Focal Length Microlens by Microfluidic and Electroactive Polymer Approaches written by Jackie Ching-Lung Chen and published by . This book was released on 2004 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research is on a development of a variable focusing microlens system. The studies of modern researchers have thrown new light on this subject, which has aroused intense interest in making tunable focusing microlenses. The most well-known methods are liquid crystal and electrowetting. Both methods require electrodes immersed in the electrolyte solution, causing severe optical distortion, and require complicated fabrication processes. Few attempts have thus far been developed to make variable focusing lens using other approaches.
Download or read book Microlenses written by Hongrui Jiang and published by CRC Press. This book was released on 2013-04-16 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the development of microscale fabrication methods, microlenses are being used more and more in many unique applications, such as artificial implementations of compound eyes, optical communications, and labs-on-chips. Liquid microlenses, in particular, represent an important and growing research area yet there are no books devoted to this topic that summarize the research to date. Rectifying this deficiency, Microlenses: Properties, Fabrication and Liquid Lenses examines the recent progress in the emerging field of liquid-based microlenses. After describing how certain problems in optics can be solved by liquid microlenses, the book introduces the physics and fabrication methods involved in microlenses. It also details the facility and equipment requirements for general fabrication methods. The authors then present examples of various microlenses with non-tunable and tunable focal lengths based on different mechanisms, including: Non-tunable microlenses: Ge/SiO2 core/shell nanolenses, glass lenses made by isotropic etching, self-assembled lenses and lens arrays, lenses fabricated by direct photo-induced polymerization, lenses formed by thermally reflowing photoresist, lenses formed from inkjet printing, arrays fabricated through molding processes, and injection-molded plastic lenses Electrically tuned microlenses: liquid crystal-based lenses and liquid lenses driven by electrostatic forces, dielectrophoretic forces, electrowetting, and electrochemical reactions Mechanically tunable microlenses: thin-membrane lenses with varying apertures, pressures, and surface shapes; swellable hydrogel lenses; liquid–liquid interface lenses actuated by environmentally stimuli-responsive hydrogels; and oscillating lens arrays driven by sound waves Horizontal microlenses: two-dimensional polymer lenses, tunable and movable liquid droplets as lenses, hydrodynamically tuned cylindrical lenses, liquid core and liquid cladding lenses, air–liquid interface lenses, and tunable liquid gradient refractive index lenses The book concludes by summarizing the importance of microlenses, shedding light on future microlens work, and exploring related challenges, such as the packaging of systems, effects of gravity, evaporation of liquids, aberrations, and integration with other optical components.
Download or read book Optical Nano and Microsystems for Bioanalytics written by Wolfgang Fritzsche and published by Springer Science & Business Media. This book was released on 2012-02-04 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the state of the art in the field of bioanalytical nano- and microsystems with optical functionality. In 12 chapters distinguished scientists and leaders in their respective fields show how various optical technologies have been miniaturized and integrated over the last few decades in order to be combined with nano- and microsystems for applications in the life sciences. The main detection and characterization technologies are introduced, and examples of the superiority of these integrated approaches compared to traditional ones are provided. Examples from e.g. the fields of optical waveguides, integrated interferometers, surface plasmon resonance or Raman spectroscopy are introduced and discussed, and it is shown how these approaches have led to novel functionalities and thereby novel applications.
Download or read book Adaptronics and Smart Structures written by Hartmut Janocha and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adaptronics is the term encompassing technical fields that have become known internationally under the names "smart materials", "intelligent structures", and "smart structures". Adaptronics contributes to the optimisation of systems and products. It bridges the gap between material and system or product, and incorporates the search for multi-functional materials and elements and their integration in systems or structures. The authors of this book have taken on the task of displaying the current state of the art in this fascinating field. The system components, actuators, sensors and controllers, technical fundamentals, materials, design rules and practical solutions are all described. Selected sample applications are also presented and current development trends are demonstrated.
Download or read book Hydrogel Sensors and Actuators written by Gerald Gerlach and published by Springer Science & Business Media. This book was released on 2009-09-24 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrogels are a fascinating class of polymers which show an immense ability of swelling under the influence of temperature, pH value or concentrations of different species in aqueous solutions. The volume change can amount up to several hundred percent. This unique behaviour is already used in such applications like disposable diapers, contact lenses or drug-delivery systems. The ability to perform mechanical work has been shifted the technical interest more and more towards sensors and actuators exploiting the thermo-chemo-mechano-electrical coupling within hydrogels. The accuracy requirements for such devices are much more demanding than for previous applications. Therefore, a deep knowledge of both the material and the functional properties of hydrogel sensors and actuators is needed. The monograph describes state of the art and recent developments for these materials in sensor and actuator technology.
Download or read book Computational Fluid Dynamics 2008 written by Haecheon Choi and published by Springer Science & Business Media. This book was released on 2009-07-23 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are delighted to present this book which contains the Proceedings of the Fifth International Conference on Computational Fluid Dynamics (ICCFD5), held in Seoul, Korea from July 7 through 11, 2008. The ICCFD series has established itself as the leading international conference series for scientists, mathematicians, and engineers specialized in the computation of fluid flow. In ICCFD5, 5 Invited Lectures and 3 Keynote Lectures were delivered by renowned researchers in the areas of innovative modeling of flow physics, innovative algorithm development for flow simulation, optimization and control, and advanced multidisciplinary - plications. There were a total of 198 contributed abstracts submitted from 25 countries. The executive committee consisting of C. H. Bruneau (France), J. J. Chattot (USA), D. Kwak (USA), N. Satofuka (Japan), and myself, was responsible for selection of papers. Each of the members had a separate subcommittee to carry out the evaluation. As a result of this careful peer review process, 138 papers were accepted for oral presentation and 28 for poster presentation. Among them, 5 (3 oral and 2 poster presentation) papers were withdrawn and 10 (4 oral and 6 poster presentation) papers were not presented. The conference was attended by 201 delegates from 23 countries. The technical aspects of the conference were highly beneficial and informative, while the non-technical aspects were fully enjoyable and memorable. In this book, 3 invited lectures and 1 keynote lecture appear first. Then 99 c- tributed papers are grouped under 21 subject titles which are in alphabetical order.
Download or read book Native Speaker written by Chang-rae Lee and published by Penguin. This book was released on 1996-03-01 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: ONE OF THE ATLANTIC’S GREAT AMERICAN NOVELS OF THE PAST 100 YEARS The debut novel from critically acclaimed and New York Times–bestselling author of On Such a Full Sea and My Year Abroad. In Native Speaker, author Chang-rae Lee introduces readers to Henry Park. Park has spent his entire life trying to become a true American—a native speaker. But even as the essence of his adopted country continues to elude him, his Korean heritage seems to drift further and further away. Park's harsh Korean upbringing has taught him to hide his emotions, to remember everything he learns, and most of all to feel an overwhelming sense of alienation. In other words, it has shaped him as a natural spy. But the very attributes that help him to excel in his profession put a strain on his marriage to his American wife and stand in the way of his coming to terms with his young son's death. When he is assigned to spy on a rising Korean-American politician, his very identity is tested, and he must figure out who he is amid not only the conflicts within himself but also within the ethnic and political tensions of the New York City streets. Native Speaker is a story of cultural alienation. It is about fathers and sons, about the desire to connect with the world rather than stand apart from it, about loyalty and betrayal, about the alien in all of us and who we finally are.
Download or read book Smart Structures and Materials written by B. Culshaw and published by Artech House Publishers. This book was released on 1996 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the enabling concepts that make up the so-called smart structure and presents a number of brief case studies to illustrate the applications of these concepts. It examines the domains of the individual technologies and defines the challenges faced by the integrator. The book is particularly effective for the potential system user who needs a good technical general background on the subject and is also useful for students and researchers in contributory technologies who want to better understand the context of their work. Consultants in civil and structural engineering will also find it of interest.
Download or read book Micromechatronics written by Victor Giurgiutiu and published by CRC Press. This book was released on 2016-04-19 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on recent developments in engineering science, enabling hardware, advanced technologies, and software, Micromechatronics: Modeling, Analysis, and Design with MATLAB, Second Edition provides clear, comprehensive coverage of mechatronic and electromechanical systems. It applies cornerstone fundamentals to the design of electromechanical syst
Download or read book Fiber Optic Smart Structures written by Eric Udd and published by Wiley-Interscience. This book was released on 1995-04-17 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended as an introduction and reference to fiber optic smart structures. Smart structures are used as sensors in a wide variety of applications and fields--from aerospace engineering to electrical engineering to civil engineering.
Download or read book Real Time Image and Video Processing written by Nasser Kehtarnavaz and published by Springer Nature. This book was released on 2022-06-01 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an overview of the guidelines and strategies for transitioning an image or video processing algorithm from a research environment into a real-time constrained environment. Such guidelines and strategies are scattered in the literature of various disciplines including image processing, computer engineering, and software engineering, and thus have not previously appeared in one place. By bringing these strategies into one place, the book is intended to serve the greater community of researchers, practicing engineers, industrial professionals, who are interested in taking an image or video processing algorithm from a research environment to an actual real-time implementation on a resource constrained hardware platform. These strategies consist of algorithm simplifications, hardware architectures, and software methods. Throughout the book, carefully selected representative examples from the literature are presented to illustrate the discussed concepts. After reading the book, the readers are exposed to a wide variety of techniques and tools, which they can then employ to design a real-time image or video processing system.
Download or read book Optical and Digital Image Processing written by Gabriel Cristobal and published by John Wiley & Sons. This book was released on 2013-02-12 with total page 949 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, Moore's law has fostered the steady growth of the field of digital image processing, though the computational complexity remains a problem for most of the digital image processing applications. In parallel, the research domain of optical image processing has matured, potentially bypassing the problems digital approaches were suffering and bringing new applications. The advancement of technology calls for applications and knowledge at the intersection of both areas but there is a clear knowledge gap between the digital signal processing and the optical processing communities. This book covers the fundamental basis of the optical and image processing techniques by integrating contributions from both optical and digital research communities to solve current application bottlenecks, and give rise to new applications and solutions. Besides focusing on joint research, it also aims at disseminating the knowledge existing in both domains. Applications covered include image restoration, medical imaging, surveillance, holography, etc... "a very good book that deserves to be on the bookshelf of a serious student or scientist working in these areas." Source: Optics and Photonics News
Download or read book Nonlinear Photonic Crystals written by Richart E. Slusher and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonlinear optical studies of periodic dielectric structures have blossomed in the past two decades. New fabrication techniques are producing fiber grating and multidimensional photonic crystals in materials where the refractive index can be varied by light pulses and beams. Gap solitons that can propagate at any velocity from zero to the speed of light and spatial solitons that prevent the diffractive spread of light in waveguide arrays are two examples of the new phenomena described in this book. Many new materials and structures are being developed that will impact new optical devices with applications in optical communications and optical data processing. All the above topics are addressed in detail in this book.
