Microlenses

Author: Hongrui Jiang
Publisher: CRC Press
ISBN: 1439836701
Format: PDF, Docs
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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.

Nanophysik und Nanotechnologie

Author: Edward L. Wolf
Publisher: John Wiley & Sons
ISBN: 3527687386
Format: PDF, Docs
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Noch hat das Motto "Alles muss kleiner werden" nicht an Faszination verloren. Physikern, Ingenieuren und Medizinern erschlie?t sich mit der Nanotechnologie eine neue Welt mit faszinierenden Anwendungen. E.L. Wolf, Physik-Professor in Brooklyn, N.Y., schrieb das erste einf?hrende Lehrbuch zu diesem Thema, in dem er die physikalischen Grundlagen ebenso wie die Anwendungsm?glichkeiten der Nanotechnologie diskutiert. Mittlerweile ist es in der 3. Auflage erschienen und liegt jetzt endlich auch auf Deutsch vor. Dieses Lehrbuch bietet eine einzigartige, in sich geschlossene Einf?hrung in die physikalischen Grundlagen und Konzepte der Nanowissenschaften sowie Anwendungen von Nanosystemen. Das Themenspektrum reicht von Nanosystemen ?ber Quanteneffekte und sich selbst organisierende Strukturen bis hin zu Rastersondenmethoden. Besonders die Vorstellung von Nanomaschinen f?r medizinische Anwendungen ist faszinierend, wenn auch bislang noch nicht praktisch umgesetzt. Der dritten Auflage, auf der diese ?bersetzung beruht, wurde ein neuer Abschnitt ?ber Graphen zugef?gt. Die Diskussion m?glicher Anwendungen in der Energietechnik, Nanoelektronik und Medizin wurde auf neuesten Stand gebracht und wieder aktuelle Beispiele herangezogen, um wichtige Konzepte und Forschungsinstrumente zu illustrieren. Der Autor f?hrt mit diesem Lehrbuch Studenten der Physik, Chemie sowie Ingenieurwissenschaften von den Grundlagen bis auf den Stand der aktuellen Forschung. Die leicht zu lesende Einf?hrung in dieses faszinierende Forschungsgebie ist geeignet f?r fortgeschrittene Bachelor- und Masterstudenten mit Vorkenntnissen in Physik und Chemie. "Zusammenfassend ist festzustellen, dass Edward L. Wolf trotz der reichlich vorhandenen Literatur zur Nanotechnologie ein individuell gestaltetes einf?hrendes Lehrbuch gelungen ist. Es eignet sich - nicht zuletzt dank der enthaltenen ?bungsaufgaben - bestens zur Vorlesungsbegleitung f?r Studierende der Natur- und Ingenieurwissenschaften sowie auch spezieller nanotechnologisch orientierter Studieng?nge." Physik Journal "...eine sehr kompakte, lesenswerte und gut verst?ndliche Einf?hrung in die Quantenmechanik sowie ihre Auswirkungen auf die Materialwissenschaften..." Chemie Ingenieur Technik

Das egoistische Gen

Author: Richard Dawkins
Publisher: Springer-Verlag
ISBN: 3642553915
Format: PDF, ePub, Mobi
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p”Ein auch heute noch bedeutsamer Klassiker“ Daily Express Sind wir Marionetten unserer Gene? Nach Richard Dawkins ́ vor über 30 Jahren entworfener und heute noch immer provozierender These steuern und dirigieren unsere von Generation zu Generation weitergegebenen Gene uns, um sich selbst zu erhalten. Alle biologischen Organismen dienen somit vor allem dem Überleben und der Unsterblichkeit der Erbanlagen und sind letztlich nur die "Einweg-Behälter" der "egoistischen" Gene. Sind wir Menschen also unserem Gen-Schicksal hilflos ausgeliefert? Dawkins bestreitet dies und macht uns Hoffnung: Seiner Meinung nach sind wir nämlich die einzige Spezies mit der Chance, gegen ihr genetisches Schicksal anzukämpfen.

Fundamentals of Microfabrication

Author: Marc J. Madou
Publisher: CRC Press
ISBN: 9780849308260
Format: PDF, ePub, Mobi
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MEMS technology and applications have grown at a tremendous pace, while structural dimensions have grown smaller and smaller, reaching down even to the molecular level. With this movement have come new types of applications and rapid advances in the technologies and techniques needed to fabricate the increasingly miniature devices that are literally changing our world. A bestseller in its first edition, Fundamentals of Microfabrication, Second Edition reflects the many developments in methods, materials, and applications that have emerged recently. Renowned author Marc Madou has added exercise sets to each chapter, thus answering the need for a textbook in this field. Fundamentals of Microfabrication, Second Edition offers unique, in-depth coverage of the science of miniaturization, its methods, and materials. From the fundamentals of lithography through bonding and packaging to quantum structures and molecular engineering, it provides the background, tools, and directions you need to confidently choose fabrication methods and materials for a particular miniaturization problem. New in the Second Edition Revised chapters that reflect the many recent advances in the field Updated and enhanced discussions of topics including DNA arrays, microfluidics, micromolding techniques, and nanotechnology In-depth coverage of bio-MEMs, RF-MEMs, high-temperature, and optical MEMs. Many more links to the Web Problem sets in each chapter

MEMS

Author: Mohamed Gad-el-Hak
Publisher: CRC Press
ISBN: 1420036572
Format: PDF, ePub, Mobi
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As our knowledge of MEMS continues to grow, so does The MEMS Handbook. The field has changed so much that this Second Edition is now available in three volumes. Individually, each volume provides focused, authoritative treatment of specific areas of interest. Together, they comprise the most comprehensive collection of MEMS knowledge available, packaged in an attractive slipcase and offered at a substantial savings. This best-selling handbook is now more convenient than ever, and its coverage is unparalleled. The first of three volumes, MEMS: Introduction and Fundamentals covers the theoretical and conceptual underpinnings of the field, emphasizing the physical phenomena that dominate at the micro-scale. It also explores the mechanical properties of MEMS materials, modeling and simulation of MEMS, control theory, and bubble/drop transport in microchannels. Chapters were updated where necessary, and the book also includes two new chapters on microscale hydrodynamics and lattice Boltzmann simulations. This volume builds a strong foundation for further study and work in the MEMS field. MEMS: Introduction and Fundamentals comprises contributions from the foremost experts in their respective specialties from around the world. Acclaimed author and expert Mohamed Gad-el-Hak has again raised the bar to set a new standard for excellence and authority in the fledgling fields of MEMS and nanotechnology.

Mechanical Engineers Handbook Instrumentation Systems Controls and MEMS

Author: Myer Kutz
Publisher: Wiley
ISBN: 9780471719861
Format: PDF, Kindle
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The updated Revision of the Bestseller--In a more Useful Format! Mechanical Engineers' Handbook has a long tradition as a single resource of valuable information related to specialty areas in the diverse industries and job functions in which mechanical engineers work. This Third Edition, the most aggressive revision to date, goes beyond the straight data, formulas, and calculations provided in other handbooks and focuses on authoritative discussions, real-world examples, and insightful analyses while covering more topics that in previous editions. Book 2: Instrumentation, Systems, Controls, and MEMS is comprised of two major parts, conveniently put together because feedback control systems require measurement transducers. The first part covers instrumentation, including transducer design, strain gages, flow meters, digital integrated circuits, and issues involved in processing transducer signals and acquiring and displaying data. The second part addresses systems and control, including: * Control system design, analysis, and performance modification * Design of servoactuators, controllers, and general-purpose control devices * "New departures" in mechanical engineering, including neural networks, mechatronics, and MEMS