Download or read book Microfabricated Ice Detection Sensor written by and published by . This book was released on 1997 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowledge of ice conditions on important aircraft lift and control surfaces is critical for safe operation. These conditions can be determined with conventional ice detection sensors, but these sensors are often expensive, require elaborate installation procedures, and interrupt the airflow. A micromachined, silicon based, flush mounted sensor which generates no internal heat has been designed, batch fabricated, packaged, and tested. The sensor is capable of distinguishing between an ice covered and a clean surface. It employs a bulk micromachined wafer with a 7 micrometers thick, boron doped, silicon diaphragm which serves as one plate of a parallel plate capacitor. This is bonded to a second silicon wafer which contains the fixed electrodes; one to drive the diaphragm by application of a voltage, the other to measure the deflection by a change in capacitance. The diaphragm sizes ranged from 1x1mm to 3x3mm, and the gap between parallel plate capacitors is 2 micrometers. A 200V d.c. was applied to the driving electrode which caused the capacitance to increase approximately 0.6pf from a nominal capacitance of 0.6pf when the surface was ice free. After the sensor was cooled below the freezing point of water, the same voltage range was applied to the drive electrode. The capacitance increased by the same amount. Then a drop of water was placed over the diaphragm and allowed to freeze. This created an approximately 2mm thick ice layer. The applied 200V d.c. produced no change in capacitance, confirming that the diaphragm was locked to the ice layer. Since the sensor uses capacitive actuation, it uses very little power and is an ideal candidate for inclusion in a wireless sensing system.

Download or read book NASA Tech Briefs written by and published by . This book was released on 1998 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microengineering Aerospace Systems written by Henry Helvajian and published by AIAA. This book was released on 1999 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microengineering Aerospace Systems is a textbook tutorial encompassing MEMS (micro-electromechanical systems), nanoelectronics, packaging, processing, and materials characterization for developing miniaturized smart instruments for aerospace systems (i.e., ASIM application-specific integrated microinstrument), satellites, and satellite subsystems. Third in a series of Aerospace Press publications covering this rapidly advancing technology, this work presents fundamental aspects of the technology and specific aerospace systems applications through worked examples.

Download or read book Smart Structures and Materials written by and published by . This book was released on 1999 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Microlithography Micromachining and Microfabrication Micromachining and microfabrication written by P. Rai-Choudhury and published by SPIE Press. This book was released on 1997 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on the use of microlithography techniques in microelectronics manufacturing, this volume is one of a series addressing a rapidly growing field affecting the integrated circuit industry. New applications in such areas as sensors, actuators and biomedical devices, are described.

Download or read book Micro Electro Mechanical Systems written by and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 1998 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Advances in Vehicular Technology and Automotive Engineering written by Joao Carmo and published by BoD – Books on Demand. This book was released on 2012-08-01 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: An automobile was seen as a simple accessory of luxury in the early years of the past century. However, in the present days it's undeniable the amount of technology and human effort applied by the vehicular industry for developing high?quality vehicles, but still, cheap for the common person. In this context, this book tries not only to fill a gap by presenting new and updated subjects related to the vehicular technology and to the automotive engineering but also to provide guidelines for future research. This book is a result of many valuable contributions from worldwide experts of automotive's field. The amount and type of contributions were judiciously selected to cover as possible the widest range of research. The most recent and cutting?edge subjects can be found in this book, e.g., electronics, mechanics, materials, and manufacturing.

Download or read book Outlook and Challenges of Nano Devices Sensors and MEMS written by Ting Li and published by Springer. This book was released on 2017-02-22 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides readers with an overview of the design, fabrication, simulation, and reliability of nanoscale semiconductor devices, MEMS, and sensors, as they serve for realizing the next-generation internet of things. The authors focus on how the nanoscale structures interact with the electrical and/or optical performance, how to find optimal solutions to achieve the best outcome, how these apparatus can be designed via models and simulations, how to improve reliability, and what are the possible challenges and roadblocks moving forward.

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on with total page 1450 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fundamentals of Microfabrication and Nanotechnology Three Volume Set written by Marc J. Madou and published by CRC Press. This book was released on 2018-12-14 with total page 1992 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in its third edition, Fundamentals of Microfabrication and Nanotechnology continues to provide the most complete MEMS coverage available. Thoroughly revised and updated the new edition of this perennial bestseller has been expanded to three volumes, reflecting the substantial growth of this field. It includes a wealth of theoretical and practical information on nanotechnology and NEMS and offers background and comprehensive information on materials, processes, and manufacturing options. The first volume offers a rigorous theoretical treatment of micro- and nanosciences, and includes sections on solid-state physics, quantum mechanics, crystallography, and fluidics. The second volume presents a very large set of manufacturing techniques for micro- and nanofabrication and covers different forms of lithography, material removal processes, and additive technologies. The third volume focuses on manufacturing techniques and applications of Bio-MEMS and Bio-NEMS. Illustrated in color throughout, this seminal work is a cogent instructional text, providing classroom and self-learners with worked-out examples and end-of-chapter problems. The author characterizes and defines major research areas and illustrates them with examples pulled from the most recent literature and from his own work.

Download or read book Fundamentals of Microfabrication written by Marc J. Madou and published by CRC Press. This book was released on 2018-10-08 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book CRREL Bibliography written by and published by . This book was released on 1998 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Manufacturing Techniques for Microfabrication and Nanotechnology written by Marc J. Madou and published by CRC Press. This book was released on 2011-06-13 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: Designed for science and engineering students, this text focuses on emerging trends in processes for fabricating MEMS and NEMS devices. The book reviews different forms of lithography, subtractive material removal processes, and additive technologies. Both top-down and bottom-up fabrication processes are exhaustively covered and the merits of the different approaches are compared. Students can use this color volume as a guide to help establish the appropriate fabrication technique for any type of micro- or nano-machine.

Download or read book ARO and AFOSR Contractors Meeting in Chemical Propulsion Held in Virginia Beach Virginia on 3 6 June 1996 written by David M. Mann and published by . This book was released on 1996 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Partial contents: Supercritical droplet behavior; Fundamentals of acoustic instabilities in liquid-propellant rockets; Modeling liquid jet atomization proceses; Liquid-propellant droplets dynamics and combustions in supercritical forced convective environments; Contributions of shear coaxial injectors to liquid rocket motor combustion instabilities; High pressure combustion studies under combustion driven oscillatory flow conditions; Droplet collision on liquid propellant combustion; Combustion and plumes; Development of a collisional radiative emission model for strongly nonequilibrium flows; Energy transfer processes in the production of excited states in reacting rocket flows; modeling nonequilibrium radiation in high altitude plumes; kinetics of plume radiation, and of HEDMs and metallic fuels combustion; Nonsteady combustion mechanisms of advanced solid propellants; Chemical mechanisms at the burning surface. p15

Download or read book Microfabricated Hydrogen Sensor Technology for Aerospace and Commercial Applications written by and published by . This book was released on 1994 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microfabrication for Microfluidics written by Sang-Joon John Lee and published by Artech House. This book was released on 2010 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing a definitive source of knowledge about the principles, materials, and process techniques used in the fabrication of microfluidics, this practical volume is a must for your reference shelf. The book focuses on fabrication, but also covers the basic purpose, benefits, and limitations of the fabricated structures as they are applied to microfluidic sensor and actuator functions. You find guidance on rapidly assessing options and tradeoffs for the selection of a fabrication method with clear tabulated process comparisons.

Download or read book RF MEMS and Their Applications written by Vijay K. Varadan and published by John Wiley & Sons. This book was released on 2003-07-25 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microelectromechanical systems (MEMS) refer to a collection of micro-sensors and actuators, which can react to environmental change under micro- circuit control. The integration of MEMS into traditional Radio Frequency (RF) circuits has resulted in systems with superior performance levels and lower manufacturing costs. The incorporation of MEMS based fabrication technologies into micro and millimeter wave systems offers viable routes to ICs with MEMS actuators, antennas, switches and transmission lines. The resultant systems operate with an increased bandwidth and increased radiation efficiency and have considerable scope for implementation within the expanding area of wireless personal communication devices. This text provides leading edge coverage of this increasingly important area and highlights the overlapping information requirements of the RF and MEMS research and development communities. * Provides an introduction to micromachining techniques and their use in the fabrication of micro switches, capacitors and inductors * Includes coverage of MEMS devices for wireless and Bluetooth enabled systems Essential reading for RF Circuit design practitioners and researchers requiring an introduction to MEMS technologies, as well as practitioners and researchers in MEMS and silicon technology requiring an introduction to RF circuit design.