Dissertations / Theses on the topic 'Integrated Circuit Fabrication'
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Rutherford, William C. "Gallium arsenide integrated circuit modeling, layout and fabrication." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26733.
Full textApplied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
Fan, Wei Ph D. Massachusetts Institute of Technology. "Advanced modeling of planarization processes for integrated circuit fabrication." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/78446.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (p. 215-225).
Planarization processes are a key enabling technology for continued performance and density improvements in integrated circuits (ICs). Dielectric material planarization is widely used in front-end-of-line (FEOL) processing for device isolation and in back-end-of-line (BEOL) processing for interconnection. This thesis studies the physical mechanisms and variations in the planarization using chemical mechanical polishing (CMP). The major achievement and contribution of this work is a systematic methodology to physically model and characterize the non-uniformities in the CMP process. To characterize polishing mechanisms at different length scales, physical CMP models are developed in three levels: wafer-level, die-level and particle-level. The wafer-level model investigates the CMP tool effects on wafer-level pressure non-uniformity. The die-level model is developed to study chip-scale non-uniformity induced by layout pattern density dependence and CMP pad properties. The particle-level model focuses on the contact mechanism between pad asperities and the wafer. Two model integration approaches are proposed to connect wafer-level and particle-level models to the die-level model, so that CMP system impacts on die-level uniformity and feature size dependence are considered. The models are applied to characterize and simulate CMP processes by fitting polishing experiment data and extracting physical model parameters. A series of physical measurement approaches are developed to characterize CMP pad properties and verify physical model assumptions. Pad asperity modulus and characteristic asperity height are measured by nanoindentation and microprofilometry, respectively. Pad aging effect is investigated by comparing physical measurement results at different pad usage stages. Results show that in-situ conditioning keeps pad surface properties consistent to perform polishing up to 16 hours, even in the face of substantial pad wear during extended polishing. The CMP mechanisms identified from modeling and physical characterization are applied to explore an alternative polishing process, referred to as pad-in-a-bottle (PIB). A critical challenge related to applied pressure using pad-in-a-bottle polishing is predicted.
by Wei Fan.
Ph.D.
Buttar, Alistair George. "CMOS process simulation." Thesis, University of Edinburgh, 1986. http://hdl.handle.net/1842/13282.
Full textVillalaz, Ricardo A. "Volume Grating Couplers for Optical Interconnects: Analysis, Design, Fabrication, and Testing." Diss., Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-07102004-165012/unrestricted/villalaz%5Fricardo%5Fa%5F200407%5Fphd.pdf.
Full textGlytsis, Elias, Committee Co-Chair ; Buck, John, Committee Member ; Kohl, Paul, Committee Member ; Adibi, Ali, Committee Member ; Gaylord, Thomas, Committee Chair. Vita. Includes bibliographical references.
Chai, Yang. "Fabrication and characterization of carbon nanotubes for interconnect applications /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?ECED%202009%20CHAI.
Full textBroadfoot, Stephen. "Design, fabrication and testing of a novel W-band monolithic millimetre-wave integrated circuit mixer." Thesis, University of Glasgow, 1999. http://theses.gla.ac.uk/1741/.
Full textLa, Pietra Andrew R. "Establishing a bipolar fabrication service for analog circuit realization at the Rochester Institute of Technology /." Online version of thesis, 1991. http://hdl.handle.net/1850/11272.
Full textKamal, Tazrien. "Development of an integrated organic film removal and surface conditioning process using low molecular weight alcohols for advanced Integrated Circuit (IC) fabrication." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/11255.
Full textKacker, Karan. "Design and fabrication of free-standing structures as off-chip interconnects for microsystems packaging." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26464.
Full textCommittee Chair: Dr. Suresh K. Sitaraman; Committee Member: Dr. F. Levent Degertekin; Committee Member: Dr. Ioannis Papapolymerou; Committee Member: Dr. Madhavan Swaminathan; Committee Member: Dr. Nazanin Bassiri-Gharb. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Menezes, Gary. "Modeling, design, fabrication and characterization of glass package-to-PCB interconnections." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/51781.
Full textPadmanabhan, Ramalekshmi Thanu Dinesh. "USE OF DILUTE HYDROFLUORIC ACID AND DEEP EUTECTIC SOLVENT SYSTEMS FOR BACK END OF LINE CLEANING IN INTEGRATED CIRCUIT FABRICATION." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/202981.
Full textLeroy, Benjamin. "Etude et développement d'un système de signalisation holographique." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS126.
Full textThis work has focused on the design and realization of a planar lighting device based on plasmonic structures, for a 633nm operation. This device will be able to convert a coherent incident light into a uniform output beam over the surface of the device, collimated and with a predefined angle with respect to the plane of the device. To achieve this feature, the proposed solution is the use of an array of dielectric waveguides to distribute the light over the surface, and silver nanostructures chains coupled to the waveguides and dimensioned as antennas to retransmit the light out of the plane. The work carried out has highlighted the control of the coupling between the waveguide and the silver nanostructures chain, modulated by several parameters in a range between 10% and 90%: the number of particles, particle size, distance between the guide and the particles. By playing on the period of the chain, it is possible to obtain an out-of-plane radiation, with an angle determined by the diffraction gratings formula. Elementary emitters, consisting of a guide and particle chains, were manufactured in a clean room and characterized on a guided wave optical bench with Fourier plane projection set-up. The experimental radiation patterns are in agreement with the simulations one. First results have also experimentally confirmed the possibility of modulating the waveguide-chain coupling by modifying the dimensions of the particles. Finally, the waveguide network has been dimensioned for an 1 cm² surface and manufactured with projection lithography. The linear losses measured in the waveguides are of the order of 5 dB / mm. Several optimizations can be made to improve the quality of the guides. From the experimental data obtained and the beam propagation simulations, a realistic configuration of the lighting device including the number and positioning of the transmitters on the waveguide network has been proposed. All the works carried out validate the chosen approach
Joshi, Siddharth. "Quantum dash based photonic integrated circuits for optical telecommunications." Thesis, Evry, Institut national des télécommunications, 2014. http://www.theses.fr/2014TELE0031/document.
Full textThis PhD dissertation presents a study on the properties of the novel quantum dash nanostructures and their properties for application in optical telecommunications. Over the last decade, scientific community has gained considerable interest over these nanostructures and several demonstrations have been made on their interesting optical and electronic properties, notably owing to their strong quantum confinement. This dissertation focuses on conception, fabrication and system demonstration of integrated optical transmitters based on quantum dash material. A first part of this work analyses the properties of qdashes theoretically and experimentally for their use as an active material in directly modulated lasers. The dynamic properties of this material are then evaluated leading to an optical transmission distances in range of 0-100km under direct modulation. The transmission is particularly studied with a passive optical filter to enhance the dynamic extinction ratio, the use of such passive filters is studied in detail. An innovative and fully integrated optical transmitter is finally demonstrated by integrating a ring-resonator filter to a distributed feedback laser. The second part of this work focuses on mode locked lasers based on this material and in particular the methods of integration of such devices on InP are explored. Thus an innovative Bragg mirror design is developed leading to a mode locked laser integrated with a semiconductor optical amplifier
Taubert, Jenny. "Use of Formulations Based On Choline Chloride-Malonic Acid Deep Eutectic Solvent for Back End of Line Cleaning in Integrated Circuit Fabrication." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/283692.
Full textKadri, Mohammed. "Formation à basse température et nouvelles techniques de caractérisations [sic] du disiliciure de tungstène WSi2." Grenoble 1, 1987. http://www.theses.fr/1987GRE10053.
Full textAnagnosti, Maria. "Design and fabrication of a photonic integrated circuit comprising a semi-conductor optical amplifier and a high speed photodiode (SOA-UTC) for >100 Gbit/s applications." Thesis, Evry, Institut national des télécommunications, 2015. http://www.theses.fr/2015TELE0022.
Full textThis work focuses on the design, fabrication and measurements of a uni-travelling carrier high speed photodiode (UTC PD) and its integration with a semiconductor optical preamplifier (SOA) for short reach 100 Gbit/s optical links, in O- and C- bands. This work also focuses on the design of a duplexer (Tx/Rx) with downstream in O-band and upstream in C-band. The SOA monolithic integration with a high speed PD without an optical filter in between yields major benefits among which: - Increase in the transmission distance. - Increase in the split ratio correlated to the number of connected users. - Decrease of the overall fabrication and assembling cost. The first part of this work is dedicated to optimizing the SOA for high power operation (Psat). The low noise figure (NF), and polarization dependence loss (PDL) are critical parameters for a preamplified receiver. Also complex modulation formats require linear gain regime of the SOA. The current SOA presents 18 dB gain with NF (8 dB), low PDL (<2 dB), and good input power saturation (-8 dBm). Thanks to further optimization of the SOA vertical structure and coupling with the optical fiber, the expected SOA performance is higher Psat >-5 dBm, NF <8 dB, similar PDL and gain. Secondly, the electrical interconnects of the photodiode is optimized to increase the photodiodes’ bandwidth, which allows to demonstrate photodiode with >100 GHz bandwidth. The PD presents high responsivity (R) (0,6 A/W at 1,3 μm and 0.55 A/W at 1,55 μm) and low PDL <1 dB. Also the saturation photocurrent is high (14 mA at 100 GHz). Finally, the SOA-UTC demonstrates high responsivity (95 A/W), low PDL (<2 dB), low NF (8 dB) and a wide 3 dB bandwidth (>95 GHz), which yields a record gain-bandwidth product of 6.1 THz. Large signal measurements at 64 Gbit/s show that our receiver reaches a low sensitivity of -17 dBm for a bit error rate of 10-9, and is expected to reach -14 dBm at 100 Gbit/s
Sekkaki, Noureddine. "Etude theorique et experimentale de la nanolithographie par electrons." Toulouse 3, 1987. http://www.theses.fr/1987TOU30147.
Full textLou, Fei. "Design, fabrication and characterization of plasmonic components based on silicon nanowire platform." Doctoral thesis, KTH, Optik och Fotonik, OFO, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-143953.
Full textQC 20140404
Paret, Jean-Marc. "Étude et mise au point de la méthodologie de conception et de fabrication collective de microsystèmes sur silicium." Grenoble INPG, 1997. http://www.theses.fr/1997INPG0015.
Full textWelter, Loïc. "Contribution à l'amélioration de l'observabilité et de la reproductibilité des défauts dans les dispositifs semi-conducteurs." Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4776.
Full textRecurrent defects appearing in specific contexts have a significant impact on nanoscale technology nodes manufacturing process yield. Therefore, a new in-situ process monitoring method is developed to improve the overall performance of the production tool. It is complementary to classical failure analysis techniques, especially when a yield crisis occurs. The idea is to transform a production circuit into a test vehicle by reusing its components. The circuit loses its original functionality in favor of process monitoring functions, carried out only with standard cells widely available in circuits. This transformation, called "topological exchange" involves modifying some levels of metallization and requires the creation of a particular design flow, based on Engineering Change Order (ECO) techniques. As several functions must be able to cohabit on the same vehicle, a multiplexing system is evaluated. Feasibility is shown through a test circuit designed analogously to a production circuit. It is transformed for the example into an integrated dielectric thickness control system
Lee, Man. "Design, fabrication and characterization of an integrated micro heat pipe system /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?MECH%202002%20LEE.
Full textIncludes bibliographical references (leaves 74-77). Also available in electronic version. Access restricted to campus users.
Dandache, Abbas. "Conception de PLA CMOS." Phd thesis, Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37596962j.
Full textMorgenroth, Laurence. "Étude de la gravure profonde de l'oxyde de silicium dans un réacteur haute-densité micro-onde de type propagatif." Université Joseph Fourier (Grenoble ; 1971-2015), 1994. http://www.theses.fr/1994GRE10079.
Full textDindo, Salam. "GaAs material investigation for integrated circuits fabrication." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25089.
Full textApplied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
Wang, Jun. "Physical design with fabrication : friendly layout /." View the Table of Contents & Abstract, 2004. http://sunzi.lib.hku.hk/hkuto/record/B30575643.
Full textOsseiran, Adam. "Définition, étude et conception d'un microprocesseur autotestable spécifique : cobra." Grenoble INPG, 1986. http://tel.archives-ouvertes.fr/tel-00320884.
Full textKim, Taehoon. "Design, fabrication, and analysis of enhanced mobility silicon germanium transistors." Access restricted to users with UT Austin EID Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3034553.
Full textRajgopal, Srihari. "FABRICATION AND CHARACTERIZATION OF 4H-SiC JFET-BASED INTEGRATED CIRCUITS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case154350167704502.
Full textKwon, Jimmy Y. (Jimmy Yongil). "Remote fabrication of integrated circuits : software support for the M.I.T. computer aided fabrication environment." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/37794.
Full textWang, Jun, and 王雋. "Physical design with fabrication: friendly layout." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B45015119.
Full textAl, Mamun Nazmul Huda. "Fabrication of a microchip device for liquid phase ion mobility spectrometry." Online access for everyone, 2006. http://www.dissertations.wsu.edu/Thesis/Fall2006/n_al_mamun_081706.pdf.
Full textMessedi, Mounir. "Automatisation d'un spectromètre de masse : application à l'analyse des gaz résiduels d'une capsule contenant une puce AsGa." Rouen, 1986. http://www.theses.fr/1986ROUES049.
Full textMontanari, Simone. "Fabrication and characterization of planar Gunn diodes for Monolithic Microwave Integrated Circuits /." Jülich : Forschungszentrum Jülich, 2005. http://www.loc.gov/catdir/toc/fy0610/2006364266.html.
Full textRodriguez, Sarah J. (Sarah Janelle) 1979. "Towards photonic integrated circuits : design and fabrication of passive InP waveguide bends." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/18055.
Full textIncludes bibliographical references (leaf 69).
Waveguide bends, in the (In,Ga)(As,P) material system, have been simulated, fabricated and tested. A process is developed for waveguides of 1 [micro]m through 7[micro]m widths. Waveguides containing S-bends of varying bending radii as well as resonator bends were examined. Inconsistent measurement results were obtained. Improved measurement methods have been suggested.
by Sarah J. Rodriguez.
S.M.
Anderson, Troy P. "Fabrication of integrated optofluidic circuits in chalcogenide glass using femtosecond laser direct writing." Doctoral diss., University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4579.
Full textID: 028916651; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; Thesis (Ph.D.)--University of Central Florida, 2010.; Includes bibliographical references (p. 181-194).
Ph.D.
Doctorate
Optics
Manook, Rhoda Margaret. "Fabrication and stability in SOI membrane technology with respect to power integrated circuits." Thesis, University of Cambridge, 2007. https://www.repository.cam.ac.uk/handle/1810/252044.
Full textZim, Bret E. "Improved Fabrication and Quality Control of Substrate Integrated Microelectrode Arrays." Thesis, University of North Texas, 2000. https://digital.library.unt.edu/ark:/67531/metadc2484/.
Full textTsui, Yat Kit. "Design and fabrication of a flip-chip-on-chip multi-chip module with 3D packaging structure and through-silicon-via for underfill dispensing /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?MECH%202004%20TSUI.
Full textIncludes bibliographical references (leaves 116-127). Also available in electronic version. Access restricted to campus users.
Chung, Chih-Ping. "Setting CMOS environment for VLSI design." Ohio : Ohio University, 1989. http://www.ohiolink.edu/etd/view.cgi?ohiou1182433560.
Full textBringer, Yves. "Performances de nouvelles architectures machines pour la mise en oeuvre d'algorithmes de traitement et d'analyse d'image." Saint-Etienne, 1993. http://www.theses.fr/1993STET4024.
Full textTan, Eugene. "Design, fabrication and characterization of N-channel InGaAsP-InP based inversion channel technology devices (ICT) for optoelectronic integrated circuits (OEIC), double heterojunction optoelectronic switches (DOES), heterojunction field-effect transistors (HFET), bipolar inversion channel field-effect transistors (BICFET) and bipolar inversion channel phototransistors (BICPT)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0006/NQ42767.pdf.
Full textLiu, Kou-chen. "Si1-xGex/Si vertical MOSFETs and sidewall strained Si devices : design and fabrication /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
Full textEwuame, Komi Atchou. "Analyse Expérimentale et Numérique des Contraintes Thermomécaniques Induites lors des Procédés Émergents de Fabrication de Puces Électroniques au moyen des Capteurs Embarqués." Thesis, Paris Sciences et Lettres (ComUE), 2016. http://www.theses.fr/2016PSLEM006/document.
Full textFor the thermomechanical stress assessment in silicon, piezoresistive sensors (in rosette) composed of 4nMOS and 4pMOS were developed and embedded into microelectronic products.The characteristic relations between piezoresistive, electrical and mechanical quantities were established.Piezoresistive quantities were identified thanks to a four-points bending calibration machine. This machine was designed and fabricated in the frame of this PhD and enables applying a known uniform uniaxial stress into silicon sample and then calculating the three piezoresistive coefficients.The sensors embedded into different technologies such as CMOS65, BiCMOS55, CMOS40, BSI140 and PIC25 were calibrated with this machine.These MOS sensors were used for studying stresses induced by TSV (CMOS65 technology), by packaging with 3D stacking (CMOS65 technology) and 2D stacking (BiCMOS55 technology).The results give stress components (σyy, σzz) which are not in a good agreement with simulation results. Electrical responses of the MOS oriented at 90° ([010] direction with respect to the x axis ([100] direction)) are questioned because the coefficients (π12) obtained from this MOS acts directly on the two components.In addition, stress variations in sensors area, as well as inter-chips and inter-wafers variabilities disturb the results.Integrated into the same test chip of the CMOS40 technology, different structures were studied, namely the MOS transistors, the bandgap structure and the poly-Si resistances which were also calibrated.For this technology, a study of thermomechanical stress induced by packaging revealed a significant impact on the output responses (MOS mobility, bandgap voltage). Through a minimization parametric study, this impact was reduced by controlling the geometrical dimensions of components and the material properties of the moulding compound.These results show that, MOS rosettes can be used as stress sensors but with a limited efficiency. The use of active resistances as stress sensors is therefore envisaged. However, these MOS can be used to study the impact of stresses on the chip operation
Kartci, Aslihan. "Analogová implementace prvků neceločíselného řádu a jejich aplikace." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-402652.
Full textFerrotti, Thomas. "Design, fabrication and characterization of a hybrid III-V on silicon transmitter for high-speed communications." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEC054/document.
Full textFor several years, the volume of digital data exchanged across the world has increased relentlessly. To manage this large amount of information, high data transmission rates over long distances are essential. Since copper-based interconnections cannot follow this tendency, high-speed optical transmission systems are required in the data centers. In this context, silicon photonics is seen as a way to obtain fully integrated photonic circuits at an expected low cost. While this technology has experienced significant growth in the last decade, the high-speed transmitters demonstrated up to now are mostly based on external laser sources. Thus, the aim of this PhD thesis was to design and produce a high-speed silicon photonic transmitter with an integrated laser source.This transmitter is composed of a high-speed silicon Mach-Zehnder, co-integrated on the same wafer with a hybrid III-V on silicon distributed Bragg reflector laser, which emission wavelength can be electrically tuned in the 1.3μm wavelength region. The design of the various elements constituting both the laser (III-V to silicon adiabatic couplers, Bragg reflectors) and the modulator (p-n junctions, travelling-wave electrodes) is thoroughly detailed, as well as their fabrication. During the characterization of the transmitters, high-speed data transmission rates up to 25Gb/s, for distances up to 10km are successfully demonstrated, with the possibility to tune the operating wavelength up to 8.5nm. Additionally, in order to further improve the integration of the laser source with the silicon photonic circuit, a solution based on the low-temperature (below 400°C) deposition of an amorphous silicon layer during the fabrication process is also evaluated. Tests on a distributed feed-back laser structure have shown performances at the state-of-the-art level (with output powers above 30mW), thus establishing the viability of this approach
Campanella, Pineda Humberto. "Thin-film bulk acoustic wave resonators (FBAR) : fabrication, heterogeneous integration with CMOS technologies and sensor applications." Doctoral thesis, Universitat Autònoma de Barcelona, 2008. http://hdl.handle.net/10803/5357.
Full textEl desarrollo de la tecnología de fabricación de los FBAR ha involucrado la puesta a punto de las técnicas de depósito y micro-mecanización de la estructura en capas del resonador, la cual está comprendida por una película de material acústico hecha de nitruro de aluminio (AlN). Se realizaron diversas pruebas para analizar la calidad del AlN depositado. También se probaron y pusieron a punto diferentes tecnologías de micro¬mecanización para liberar la estructura del FBAR, destacando entre ellas la técnica de ataque en seco por la cara de componentes, dados los altos factores de calidad obtenidos (superiores a 2.000 a 2,4 GHz). Sobre los dispositivos fabricados se realizaron caracterizaciones estructurales, modelos utilizando análisis de elementos finitos y la extracción de parámetros de circuito equivalente. Una variación del proceso que involucraba el diseño, modelado y fabricación de un dispositivo FBAR con compensación de temperatura fue igualmente desarrollada. En este ámbito vale la pena resaltar la concepción y realización de una novedosa técnica post-fabricación para el ajuste fino de la frecuencia de resonancia de los FBAR por medio de un haz de iones focalizados (FIB).
Basado en la tecnología arriba mencionada, se desarrolló un método de integración heterogénea a nivel de oblea de los dispositivos FBAR en sustratos CMOS estándar. De acuerdo con este método, se logró fabricar por primera vez dispositivos FBAR flotando sobre sustratos CMOS estándar. Este método ha sido exitosamente demostrado por medio de la integración de los FBAR tanto con la tecnología comercial AMS035 como con la CNM25, desarrollada en el CNM-IMB (CSIC).
En el terreno de las aplicaciones, se diseñaron y realizaron diferentes aplicaciones de sensores basadas en FBAR, siendo el detector de masas localizadas la más relevante de entre ellas. Es de anotar que esta aplicación fue demostrada por primera vez utilizando FBARs de alta frecuencia como elemento sensor. De tal forma, se contrastaron los resultados experimentales y de modelado del sensor. Por otra parte, se presenta también el concepto de sensores mecánicos basados en FBAR. Para ello se han desarrollado dos ejemplos: el acelerómetro basado en FBAR y el sensor de fuerza para aplicaciones de puntas de AFM. Se reporta también en esta tesis la fabricación y caracterización de un nuevo tipo de resonadores acústicos de AlN sin contacto entre electrodos.
The high impact of FBAR on radio-frequency and, most recently, on sensing systems has motivated the development of integrated applications. This means that the fabrication process should succeed in producing high-quality-factor resonators and, at the same time, in integrating FBARs with standard CMOS technologies. Hence, this Ph.D. thesis addresses these requirements by contributing with the design, fabrication and characterization of thin-film bulk acoustic wave resonators (FBAR); their integration with standard complementary-metal-oxide-semiconductor (CMOS) technologies; and their application to sensing systems.
The development of the FBAR's fabrication technology has involved the set up of the deposition and micromachining techniques of the layered structure of the resonator, which comprises an acoustic layer made of aluminum nitride (AlN). Several tests on the deposition and characterization of the AlN quality were carried out. Also, different micro-machining technologies for FBAR releasing were tested, the front-side micro-machining technique having obtained the best quality-factor results (over 2,000 at 2.4 GHz). Structural and device experimental characterization; and equivalent-circuit parameter and finite-element modeling of the FBAR were carried out. A process variation involving the design, modeling and fabrication of a temperature-compensated (TC) FBAR device was also implemented. Another remarkable result is the implementation of a post-fabrication, focused-ion-beam assisted technique for tuning of the resonance frequency of the FBAR.
Based on the foregoing-mentioned FBAR technology, a method for performing wafer-level heterogeneous integration of the FBAR with a CMOS substrate was developed. According to this method, the fabrication of a floating FBAR above standard CMOS substrates has been achieved for the first time. The method was demonstrated by integrating FBARs on the commercial AMS035 and the in-house CNM25 CMOS technologies.
On the application side, different FBAR-based sensor applications were implemented, the localized-mass detector being the most relevant, which has been demonstrated for the first time for high-frequency bulk-acoustic resonators. Experimental and modeling results have been contrasted. Also, the concept of FBAR-based mechanical sensor has been introduced. Two examples are the embedded-FBAR accelerometer and the force sensor for AFM-cantilever applications. The fabrication and characterization results of an AlN-based contactless acoustic resonator are also reported in this thesis.
Santini, Guillaume. "Conception fabrication et caractérisation d’un photorécepteur cohérent en filière PIC InP pour les applications 100-400 Gbit/s." Thesis, Evry, Institut national des télécommunications, 2017. http://www.theses.fr/2017TELE0024/document.
Full textThis work focuses on the design, manufacturing and characterization of a coherent photoreceptor in PiC InP for 100-400 Gbit/s applications. The chosen solution is a preamplified coherent receiver with an SOA to improve the responsivity compared to a conventional coherent receiver. In addition, this receiver is made in buried technology to allow operation over a wider range of wavelengths. Finally, a coherent receiver without SOA is also produced to be able to evaluate its impact on the performances of our receiver. The first part of this study is devoted to reminders about very high speed optical transmissions, about state of the art on coherent receivers, about a presentation of the different photodetectors and a presentation of the 90° hybrid which is the core component in coherent receivers. Secondly, we present the various choices made for the design of our receiver. The study of two 90° hybrids simulated in ridge or in buried technology is detailed. We also comment the choices of photodiodes and SOA used for our component. The third chapter is devoted to the different technological steps used to build our preamplified receiver. We start with a description of the different epitaxial techniques used. Then, we present in detail the 22 technological steps required to realize our receiver. Finally, we group all the characterizations preformed on our coherent receiver. We characterize the unitary components of our receiver (hybrid 90°, UTC photodiodes and SOA). Finally we present the static and dynamic characteristics of our receiver and we compare its performances with the state of the art. This thesis demonstrates the feasibility of a preamplified receiver using a SOA in buried InP technology with a record of reponsivity of 5 A/W. This represents a gain of 12.5 dB compared to an ideal coherent receiver and a gain of 15,5 dB compared to the state of the art. In addition, the consumption generated by this integration remains very low (240 mW). Finally, we have demonstrated a 32 Gbauds demodulation with a Q factor of 14dB and the 40 GHz bandwidth of our photodiodes is compatible with 56 Gbauds applications. It can be improved for 100 Gbauds applications by reducing the size of our photodiodes. This thesis opens the way for a new preamplified coherent receiver for 400 Gbit/s applications
Cook, Benjamin Stassen. "Vertical integration of inkjet-printed RF circuits and systems (VIPRE) for wireless sensing and inter/intra-chip communication applications." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/51844.
Full textMaghribi, M. "Microfabrication of an Implantable silicone Microelectrode array for an epiretinal prosthesis." Washington, D.C : Oak Ridge, Tenn. : United States. Dept. of Energy ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2003. http://www.osti.gov/servlets/purl/15005780-5uYpbJ/native/.
Full textPublished through the Information Bridge: DOE Scientific and Technical Information. "UCRL-LR-153347" Maghribi, M. 06/10/2003. Report is also available in paper and microfiche from NTIS.
Vu, Thi Mai. "Etude des couches minces du système ternaire Ge-Se-Te et fabrication de composants d'optique intégrée IR, briques de base de micro-capteurs optiques de gaz." Thesis, Montpellier 2, 2014. http://www.theses.fr/2014MON20098/document.
Full textIn a context where the needs for gas sensors are increasingly important, especially for environmental metrology, it is proposed in this work to achieve straight waveguides, spirals, Y-junctions, ..., elements essential for the fabrication of infrared optical micro-sensors. The realization of these elements, by stacking and etching of amorphous thin films from the Ge-Se-Te ternary system, first required the study of this system. Ge-Se-Te thin films of very different compositions were deposited by thermal co-evaporation and characterized in terms of uniformity, thermal stability, optical band gap and refractive index. The evolution of the film properties with the composition was then used to highlight a particularly attractive area of compositions in the Ge-Se-Te system: in this domain, corresponding to compositions rich in Se (more than 55 atomic %) and containing between 20 and 30 atomic % in Ge, the layers are indeed single-phase, characterized by high glass transition temperatures, high thermal stability, and a transparency window extending from 1 to about 16 microns. In this composition region, two of them were selected, Ge25Te10Se65 and Ge25Te20Se55, and used to realize different integrated optics circuits. The simplest elements, which are channel waveguides, were made by depositing successively two layers (Ge25Te10Se65 then Ge25Te20Se55) on a silicon substrate, and then by modifying the geometry of the higher refractive index top layer by ion beam etching, so as to obtain a two-dimensional confinement of light. Propagation losses of these straight waveguides were estimated at 1 dB.cm-1 at the 1.55 µm wavelength. Other more complex elements were then fabricated: S-bent waveguides for which the guiding properties were obtained whatever the curvature radius, operational spiral waveguides, Y-junctions able of a satisfactory division of the light intensity, and Mach-Zehnder interferometers at the output of which the light was successfully recombined