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Development of CMOS Solid State Magnetic Sensors

Development of CMOS Solid State Magnetic Sensors
Author: John G. Doyle
Publisher:
Total Pages: 185
Release: 2004
Genre: Microelectronics
ISBN:

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A magnetic field sensor is a transducer that is capable of converting a magnetic field, H, into a useful electronic signal. These are used in a wide range of applications including retrieving data in the computer industry by reading magnetic tapes or disks or reading magnetic ink on banknotes, cashcards or credit cards for identification purposes, contactless switching, linear and angular displacement detection (e.g. in automotive systems) and potential-free current detection. A majority of solid state magnetic field sensors made to date have been built on bipolar processes. However, it would be beneficial to obtain similar levels of capability in magnetic sensors in CMOS, because this would allow magnetic sensors to be integrated into the present mainstream semiconductor technology. This thesis describes a research effort to improve the sensing capability of silicon magnetic field detectors through circuit innovation such that it is possible to develop a high performance, low power magnetic sensing capability in standard CMOS without extra exotic process steps or the requirement to have flux concentrators or other external devices in order to boost the sensing capability of the CMOS device. There are three circuits described in this work. The first, a magnetic sensitive amplifier achieved the highest figure of merit, 16kV/AT, reported at the time of its publication. The second device was the lowest power magnetic sensor at the time of its publication and could sense 1mT while running on 100nA. The third used a novel noise reduction scheme to sense lower levels of magnetic field (0.18mT) than had been reported for a CMOS device to date and provides a path to improved performance in future. The work in this thesis demonstrates that it is possible through circuit design innovation to deliver highly sensitive, low power magnetic sensors in standard CMOS.


Solid State Magnetic Sensors

Solid State Magnetic Sensors
Author: C.S. Roumenin
Publisher:
Total Pages: 444
Release: 1994-09-26
Genre: Science
ISBN:

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I am profoundly convinced that notwithstanding the great progress made in solid-state magnetic sensors, they are as yet in their cloudless infancy, whereas there is still so much lying ahead in a world, unlimited in time and space ... Good Heavens! They are a whole Universe into themselves. So expounds the author in his preface to this second volume in the exciting new series, Handbook of Sensors and Actuators. The publication presents a balanced view of the overall progress made in the field, whilst summing up scientific achievements as the groundwork for further development. Readers will find, for the first time, collected in one book, detailed information regarding the physical mechanisms of the origin of magnetosensitivity, the geometry and design of devices, operating modes, basic parameters and methods for their determination, the incorporation of transducers in circuits and smart solutions, many varied applications and other problems relevant to all the current Hall sensors, magnetodiodes, magnetotransistors, carrier-domain magnetometers, SQUID's (Superconducting Quantum Interference Devices) and similar transducers of magnetic energy. Particular attention is devoted to semiconductor magnetosensitive sensors and their microelectronic versions since development rates in this area signify a dominant research trend for the future. Undoubtedly this book will become a vital reference tool for the ever widening circle of researchers and engineers interested in solid-state magnetosensors. It also makes a fundamental contribution to the handbook series as a whole.


CMOS Capacitive Sensors for Lab-on-Chip Applications

CMOS Capacitive Sensors for Lab-on-Chip Applications
Author: Ebrahim Ghafar-Zadeh
Publisher: Springer Science & Business Media
Total Pages: 154
Release: 2010-03-10
Genre: Technology & Engineering
ISBN: 9048137276

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1.1 Overview of Lab-on-Chip Laboratory-on-Chip (LoC) is a multidisciplinary approach used for the miniaturization, integration and automation of biological assays or procedures in analytical chemistry [1–3]. Biology and chemistry are experimental sciences that are continuing to evolve and develop new protocols. Each protocol offers step-by-step laboratory instructions, lists of the necessary equipments and required biological and/or chemical substances [4–7]. A biological or chemical laboratory contains various pieces of equipment used for performing such protocols and, as shown in Fig. 1.1, the engineering aspect of LoC design is aiming to embed all these components in a single chip for single-purpose applications. 1.1.1 Main Objectives of LoC Systems Several clear advantages of this technology over conventional approaches, including portability, full automation, ease of operation, low sample consumption and fast assays time, make LoC suitable for many applications including. 1.1.1.1 Highly Throughput Screening To conduct an experiment, a researcher fills a well with the required biological or chemical analytes and keeps the sample in an incubator for some time to allowing the sample to react properly. Afterwards, any changes can be observed using a microscope. In order to quickly conduct millions of biochemical or pharmacolo- cal tests, the researchers will require an automated highly throughput screening (HTS) [8], comprised of a large array of wells, liquid handling devices (e.g., mic- channel, micropump and microvalves [9–11]), a fully controllable incubator and an integrated sensor array, along with the appropriate readout system.


Development of CMOS-MEMS/NEMS Devices

Development of CMOS-MEMS/NEMS Devices
Author: Jaume Verd
Publisher: MDPI
Total Pages: 166
Release: 2019-06-25
Genre: Technology & Engineering
ISBN: 3039210688

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Micro and nano-electro-mechanical system (M/NEMS) devices constitute key technological building blocks to enable increased additional functionalities within Integrated Circuits (ICs) in the More-Than-Moore era, as described in the International Technology Roadmap for Semiconductors. The CMOS ICs and M/NEMS dies can be combined in the same package (SiP), or integrated within a single chip (SoC). In the SoC approach the M/NEMS devices are monolithically integrated together with CMOS circuitry allowing the development of compact and low-cost CMOS-M/NEMS devices for multiple applications (physical sensors, chemical sensors, biosensors, actuators, energy actuators, filters, mechanical relays, and others). On-chip CMOS electronics integration can overcome limitations related to the extremely low-level signals in sub-micrometer and nanometer scale electromechanical transducers enabling novel breakthrough applications. This Special Issue aims to gather high quality research contributions dealing with MEMS and NEMS devices monolithically integrated with CMOS, independently of the final application and fabrication approach adopted (MEMS-first, interleaved MEMS, MEMS-last or others).]


High Performance Silicon Imaging

High Performance Silicon Imaging
Author: Daniel Durini
Publisher: Elsevier
Total Pages: 479
Release: 2014-05-14
Genre: Technology & Engineering
ISBN: 0857097520

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High Performance Silicon Imaging covers the fundamentals of silicon image sensors, with a focus on existing performance issues and potential solutions. The book considers several applications for the technology as well. Silicon imaging is a fast growing area of the semiconductor industry. Its use in cell phone cameras is already well established, and emerging applications include web, security, automotive, and digital cinema cameras. Part one begins with a review of the fundamental principles of photosensing and the operational principles of silicon image sensors. It then focuses in on charged coupled device (CCD) image sensors and complementary metal oxide semiconductor (CMOS) image sensors. The performance issues considered include image quality, sensitivity, data transfer rate, system level integration, rate of power consumption, and the potential for 3D imaging. Part two then discusses how CMOS technology can be used in a range of areas, including in mobile devices, image sensors for automotive applications, sensors for several forms of scientific imaging, and sensors for medical applications. High Performance Silicon Imaging is an excellent resource for both academics and engineers working in the optics, photonics, semiconductor, and electronics industries. Covers the fundamentals of silicon-based image sensors and technical advances, focusing on performance issues Looks at image sensors in applications such as mobile phones, scientific imaging, TV broadcasting, automotive, and biomedical applications


Smart CMOS Image Sensors and Applications

Smart CMOS Image Sensors and Applications
Author: Jun Ohta
Publisher: CRC Press
Total Pages: 295
Release: 2020-05-12
Genre: Technology & Engineering
ISBN: 1498797342

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Revised and expanded for this new edition, Smart CMOS Image Sensors and Applications, Second Edition is the only book available devoted to smart CMOS image sensors and applications. The book describes the fundamentals of CMOS image sensors and optoelectronic device physics, and introduces typical CMOS image sensor structures, such as the active pixel sensor (APS). Also included are the functions and materials of smart CMOS image sensors and present examples of smart imaging. Various applications of smart CMOS image sensors are also discussed. Several appendices supply a range of information on constants, illuminance, MOSFET characteristics, and optical resolution. Expansion of smart materials, smart imaging and applications, including biotechnology and optical wireless communication, are included. Features • Covers the fundamentals and applications including smart materials, smart imaging, and various applications • Includes comprehensive references • Discusses a wide variety of applications of smart CMOS image sensors including biotechnology and optical wireless communication • Revised and expanded to include the state of the art of smart image sensors


Magnetic Sensors

Magnetic Sensors
Author: Aktham Asfour
Publisher: BoD – Books on Demand
Total Pages: 166
Release: 2017-11-29
Genre: Technology & Engineering
ISBN: 953513647X

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This book presents an overview of some trends of research and development in the area of magnetic sensors, from materials to applications. A first focus is made on the topics of amorphous micro-wires and thin-film structures and their fabrication, characterization, and application for magnetic sensors based on the effects of giant magneto-impedance (GMI) and magneto-elasticity. A second section deals with the magneto-impedance (MR) sensors, from the development of new materials to sensor implementation and applications. Intended for readers wishing to acquire understanding of the current trends in these areas and comprehension of the issues and the potential of applications of these sensors, this book addresses exciting topics in this field.


CMOS - MEMS

CMOS - MEMS
Author: Henry Baltes
Publisher: John Wiley & Sons
Total Pages: 610
Release: 2013-03-26
Genre: Technology & Engineering
ISBN: 352767506X

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This edition of 'CMOS-MEMS' was originally published in the successful series 'Advanced Micro & Nanosystems'. Here, the combination of the globally established, billion dollar chip mass fabrication technology CMOS with the fascinating and commercially promising new world of MEMS is covered from all angles. The book introduces readers to this fi eld and takes them from fabrication technologies and material charaterization aspects to the actual applications of CMOS-MEMS - a wide range of miniaturized physical, chemical and biological sensors and RF systems. Vital knowledge on circuit and system integration issues concludes this in-depth treatise, illustrating the advantages of combining CMOS and MEMS in the first place, rather than having a hybrid solution.


Magnetic Sensors and Devices

Magnetic Sensors and Devices
Author: Laurent A. Francis
Publisher: CRC Press
Total Pages: 275
Release: 2017-10-18
Genre: Technology & Engineering
ISBN: 1498710980

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This book presents in-depth coverage of magnetic sensors in industrial applications. It is divided into three sections: devices and technology for magnetic sensing, industrial applications (automotive, navigation), and emerging applications. Topics include transmission speed sensor ICs, dynamic differential Hall ICs, chopped Hall switches, programmable linear output Hall sensors, low power Hall ICs, self-calibrating differential Hall ICs for wheel speed sensing, dynamic differential Hall ICs, uni- and bipolar Hall IC switches, chopped mono cell Hall ICs, and electromagnetic levitation.


Optical, Acoustic, Magnetic, and Mechanical Sensor Technologies

Optical, Acoustic, Magnetic, and Mechanical Sensor Technologies
Author: Krzysztof Iniewski
Publisher: CRC Press
Total Pages: 357
Release: 2017-12-19
Genre: Computers
ISBN: 1439869782

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Light on physics and math, with a heavy focus on practical applications, Optical, Acoustic, Magnetic, and Mechanical Sensor Technologies discusses the developments necessary to realize the growth of truly integrated sensors for use in physical, biological, optical, and chemical sensing, as well as future micro- and nanotechnologies. Used to pick up sound, movement, and optical or magnetic signals, portable and lightweight sensors are perpetually in demand in consumer electronics, biomedical engineering, military applications, and a wide range of other sectors. However, despite extensive existing developments in computing and communications for integrated microsystems, we are only just now seeing real transformational changes in sensors, which are critical to conducting so many advanced, integrated tasks. This book is designed in two sections—Optical and Acoustic Sensors and Magnetic and Mechanical Sensors—that address the latest developments in sensors. The first part covers: Optical and acoustic sensors, particularly those based on polymer optical fibers Potential of integrated optical biosensors and silicon photonics Luminescent thermometry and solar cell analyses Description of research from United States Army Research Laboratory on sensing applications using photoacoustic spectroscopy Advances in the design of underwater acoustic modems The second discusses: Magnetic and mechanical sensors, starting with coverage of magnetic field scanning Some contributors’ personal accomplishments in combining MEMS and CMOS technologies for artificial microsystems used to sense airflow, temperature, and humidity MEMS-based micro hot-plate devices Vibration energy harvesting with piezoelectric MEMS Self-powered wireless sensing As sensors inevitably become omnipresent elements in most aspects of everyday life, this book assesses their massive potential in the development of interfacing applications for various areas of product design and sciences—including electronics, photonics, mechanics, chemistry, and biology, to name just a few.