Download or read book Characterization and Evaluation of the Microcantilever Radiation Detector written by Andrew Curtis Stephan and published by . This book was released on 1999 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical and Material Characterization of Bilayer Microcantilevers for Mems based IR Detector Applications written by I-Kuan Lin and published by . This book was released on 2011 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Uncooled micro-electro-mechanical systems (MEMS)-based infrared radiation (IR) detectors have received extensive attention for wide use in military and civilian applications such as for night vision, environmental monitoring, biomedical diagnostics, remote sensing, and thermal probing of active microelectronic devices. These detectors utilize the bending of bilayer microcantilevers upon absorption of IR to form thermal images. While these MEMS-based IR detectors have many benefits over photon detectors, the residual stress-induced curvature after fabrication and inelastic deformation greatly compromise their performance. Recently, a composite material, silicon oxynitride (SiON), which has a unique tunability in IR absorption spectrum, has been proposed to replace the conventional IR absorption material such as silicon nitride (Si 3 N 4 ) in IR detectors. This composite material enhances the sensitivity to selective targets, which emit IR at particular wavelength. However, the mechanical properties of the composite material have seldom been studied. Accurate mechanical and material characterization is crucial to ensure performance and reliability. This dissertation addresses three important fundamental technical issues for the next-generation of high-sensitivity and tunable MEMS-based IR detectors: (1) planarization; (2) long-term behavior prediction of Si 3 N 4 /AI bilayer microcantilevers; and (3) mechanical and material properties characterization of silicon oxynitride thin films. This research provides a comprehensive mechanical and material characterization of the temperature- and time-dependent thermomechanical responses of the Si 3 N 4 /AI bilayer microcantilever beams under different thermal loading. Experimental methodologies, theoretical models and finite element analysis (FEA) models are developed to achieve flattened bilayer microcantilevers, and to predict the temperature- and time-dependent deformation of MEMS-based IR detectors in short- and long-term operation. In addition, the mechanical and material properties of the silicon oxynitride thin films are systematically studied using nanoindentation for mechanical characterization, energy dispersive X-ray analysis (EDX) for material composition, and Fourier transform infrared spectrometry (FT-IR) for optical characterization. The experimental methodologies and theoretical framework developed in this research can be readily applied to study the thermomechanical behavior of various bilayer microcantilever structures, and to improve the fundamental understanding required to design high-sensitivity and tunable MEMS-based IR detectors.
Download or read book Semiconductor Radiation Detectors written by Alan Owens and published by CRC Press. This book was released on 2019-05-31 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Choice Recommended Title, July 2020 Bringing together material scattered across many disciplines, Semiconductor Radiation Detectors provides readers with a consolidated source of information on the properties of a wide range of semiconductors; their growth, characterization and the fabrication of radiation sensors with emphasis on the X- and gamma-ray regimes. It explores the promise and limitations of both the traditional and new generation of semiconductors and discusses where the future in semiconductor development and radiation detection may lie. The purpose of this book is two-fold; firstly to serve as a text book for those new to the field of semiconductors and radiation detection and measurement, and secondly as a reference book for established researchers working in related disciplines within physics and engineering. Features: The only comprehensive book covering this topic Fully up-to-date with new developments in the field Provides a wide-ranging source of further reference material
Download or read book Si Detectors and Characterization for HEP and Photon Science Experiment written by Ajay Kumar Srivastava and published by Springer Nature. This book was released on 2019-09-13 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the HL-LHC experiments and the fourth-generation photon science experiments, discussing the latest radiation hardening techniques, optimization of device & process parameters using TCAD simulation tools, and the experimental characterization required to develop rad-hard Si detectors for x-ray induced surface damage and bulk damage by hadronic irradiation. Consisting of eleven chapters, it introduces various types of strip and pixel detector designs for the current upgrade, radiation, and dynamic range requirement of the experiments, and presents an overview of radiation detectors, especially Si detectors. It also describes the design of pixel detectors, experiments and characterization of Si detectors. The book is intended for researchers and master’s level students with an understanding of radiation detector physics. It provides a concept that uses TCAD simulation to optimize the electrical performance of the devices used in the harsh radiation environment of the colliders and at XFEL.
Download or read book Thermal Characterization of Heated Microcantilevers and a Study on Near field Radiation written by Keunhan Park and published by . This book was released on 2007 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, remarkable advances have been made in the understanding of micro/nanoscale energy transport, opening new opportunities in various areas such as thermal management, data storage, and energy conversion. This dissertation focuses on thermally-sensed nanotopography using a heated silicon microcantilever and near-field thermophotovoltaic (TPV) energy conversion system.
Download or read book Microcantilever Sensors for In Situ Subsurface Characterization written by Gilbert M. Brown and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Real-time, in-situ analysis is critical for decision makers in environmental monitoring, but current techniques for monitoring and characterizing radionuclides rely primarily on liquid scintillation counting, ICP-MS, and spectrofluorimetry, which require sample handling and labor intensive lengthy analytical procedures. Other problems that accompany direct sampling include adherence to strict holding times and record maintenance for QA/QC procedures. Remote, automated sensing with direct connection to automated data management is preferred.
Download or read book Compound Semiconductor Radiation Detectors written by Alan Owens and published by CRC Press. This book was released on 2012-04-25 with total page 583 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although elemental semiconductors such as silicon and germanium are standard for energy dispersive spectroscopy in the laboratory, their use for an increasing range of applications is becoming marginalized by their physical limitations, namely the need for ancillary cooling, their modest stopping powers, and radiation intolerance. Compound semiconductors, on the other hand, encompass such a wide range of physical and electronic properties that they have become viable competitors in a number of applications. Compound Semiconductor Radiation Detectors is a consolidated source of information on all aspects of the use of compound semiconductors for radiation detection and measurement. Serious Competitors to Germanium and Silicon Radiation Detectors Wide-gap compound semiconductors offer the ability to operate in a range of hostile thermal and radiation environments while still maintaining sub-keV spectral resolution at X-ray wavelengths. Narrow-gap materials offer the potential of exceeding the spectral resolution of germanium by a factor of three. However, while compound semiconductors are routinely used at infrared and optical wavelengths, their development in other wavebands has been plagued by material and fabrication problems. So far, only a few have evolved sufficiently to produce commercial detection systems. From Crystal Growth to Spectroscopic Performance Bringing together information scattered across many disciplines, this book summarizes the current status of research in compound semiconductor radiation detectors. It examines the properties, growth, and characterization of compound semiconductors as well as the fabrication of radiation sensors, with particular emphasis on the X- and gamma-ray regimes. It explores the limitations of compound semiconductors and discusses current efforts to improve spectral performances, pointing to where future discoveries may lie. A timely resource for the established researcher, this book serves as a comprehensive and illustrated reference on material science, crystal growth, metrology, detector physics, and spectroscopy. It can also be used as a textbook for those new to the field of compound semiconductors and their application to radiation detection and measurement.
Download or read book Springer Handbook of Nanotechnology written by Bharat Bhushan and published by Springer Science & Business Media. This book was released on 2010-04-23 with total page 1968 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since 2004 and with the 2nd edition in 2006, the Springer Handbook of Nanotechnology has established itself as the definitive reference in the nanoscience and nanotechnology area. It integrates the knowledge from nanofabrication, nanodevices, nanomechanics, Nanotribology, materials science, and reliability engineering in just one volume. Beside the presentation of nanostructures, micro/nanofabrication, and micro/nanodevices, special emphasis is on scanning probe microscopy, nanotribology and nanomechanics, molecularly thick films, industrial applications and microdevice reliability, and on social aspects. In its 3rd edition, the book grew from 8 to 9 parts now including a part with chapters on biomimetics. More information is added to such fields as bionanotechnology, nanorobotics, and (bio)MEMS/NEMS, bio/nanotribology and bio/nanomechanics. The book is organized by an experienced editor with a universal knowledge and written by an international team of over 150 distinguished experts. It addresses mechanical and electrical engineers, materials scientists, physicists and chemists who work either in the nano area or in a field that is or will be influenced by this new key technology.
Download or read book Analysis and Development of a Very Sensitive Low Temperature Gravitational Radiation Detector written by Ho Jung Paik and published by . This book was released on 1974 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis and Control of Microcantilever Deflections for Biological Sensing Applications written by Xuan Zhang and published by . This book was released on 2003 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical Analysis of Laterally Vibrating Microcantilever Sensors in a Viscous Liquid Medium written by Russell Cox and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamically driven microcantilevers are normally excited into resonance in the out-of-plane flexural mode. The beam's resonant frequency and quality factor are used to characterize the devices. The devices are well suited for operation in air, but are limited in viscous liquid media due to the increased viscous damping. In order to improve these characteristics, other vibration modes such as the in-plane (or lateral) flexural mode are investigated. In this work, microcantilevers vibrating in the in-plane flexural mode (or lateral direction) in a viscous liquid medium are investigated. The hydrodynamic forces on the microcantilever as a function of both Reynolds number and aspect ratio (thickness over width) are first calculated using a combination of numerical methods and Stokes' solution. The results allowed for the resonant frequency, quality factor, and mass sensitivity to be investigated as a function of both beam geometry and medium properties. The predicted resonant frequency and quality factor for several different laterally vibrating beams in water are also found to match the trends given by experimentally determined values found in the literature. The results show a significant improvement over those of similar devices vibrating in the out-of-plane flexural mode. The resonant frequency increases by a factor proportional to the inverse of the beam's aspect ratio. Moreover, the resonant frequency of a laterally vibrating beam shows a smaller decrease when immersed in water (5-10% compared to 5̃0% for transversely vibrating beams) and, as the viscosity increases, the resonant frequency decreases slower compared to beams excited transversely. The quality factor is found to increase by a factor of 2-4 or higher depending on the medium of operation and the beam geometry. Due to the increased resonant frequency and the decreased effective mass of the beam (compared to beams excited transversely), the estimated mass sensitivity of a laterally excited microcantilever is found to be much larger (up to two orders of magnitude). The improvement in these characteristics is expected to yield much lower limits of detection in liquid-phase bio-chemical sensing applications.
Download or read book Design and Analysis of the Operation of a Radiation Detector written by Mary L. Harbold and published by . This book was released on 1957 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Piezoresistive Microcantilever Optimization for Uncooled Infrared Detection Technology written by and published by . This book was released on 1996 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uncooled infrared sensors are significant in a number of scientific and technological applications. A new approach to uncooled infrared detectors has been developed using piezoresistive microcantilevers coated with thermal energy absorbing materials. Infrared radiation absorbed by the microcantilever detector can be sensitively detected as changes in electrical resistance as function of microcantilever bending. The dynamic range of these devices is extremely large due to measurable resistance change obtained with only nanometer level cantilever displacement. Optimization of geometrical properties for selected commercially available cantilevers is presented. We also present results obtained from a modeling analysis of the thermal properties of several different microcantilever detector architectures.
Download or read book Design and Characterization of a Silicon Microstrip Radiation Detector written by I. Hietanen and published by . This book was released on 1990 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microcantilever Sensors for In situ Sub surface Characterization written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Radiation Detector for Noise Analysis on the MITR Subcritical Assembly written by Malvin Gordon Johnson (Jr.) and published by . This book was released on 1966 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Semiconductor Radiation Detectors written by Salim Reza and published by . This book was released on 2022-06 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of chapters containing carefully selected topics on the most recent advancements in semiconductor radiation detector technologies. Relatively new detector materials, such as CdZTe and Cr compensated GaAs, are introduced, along with emerging applications of radiation detectors.
