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Faculty Profile Last Modified Time: 03:06:19 PM Tue, 25 Aug 2009   Contact Information Dr. Zeynep Celik-Butler Associated Profiles  Professor & Director-Nanotechnology, Professor-Electrical Engineering     Arlington, TX 76019     Mail Box: 19072, Nanofab Center    zbutler@uta.edu     817-272-1309     817-272-7458    Web Link    Noise and reliability in electronic devices, Hish-k dielectrics, Sensors and detectors on flexible substrates for "smart skin", Wafer-level packaging    Associated Profiles Professional Preparation Research and Expertise Publications Affiliations Appointments Synergistic Activities Support News Teaching Additional Information  Professional Preparation  Degree Major Institution Year  Ph.D. electrical engineering University of Rochester 1987  M.S. electrical engineering University of Rochester 1984  B.S. electrical engineering and physics Bogaziçi University, Istanbul, Turkey 1982  Research and Expertise Uncooled Infrared Detectors   Web Link A radiation detector is a device that produces an output signal, which depends on the amount of radiation hitting the active region of the detector. In general, infrared (IR) sensors can be classified as thermal or photon type of detectors. Photon type detectors such as photovoltaic or photoconductive sensors operate on the principles of direct electron - photon interaction. They provide superior sensitivity and response speed. However, photon detectors typically require costly cryogenic operation to minimize the noise sources to obtain the high relative sensitivity. On the other hand, thermal detectors convert incident radiation into heat, thereby raising the temperature of the detector element. This change in temperature is then converted to an electrical signal that can be amplified and displayed. Thermal detectors are capable of responding to a wide range of wavelengths without appreciable variation in responsivity. Thermal detectors display high sensitivity at room temperature to permit imaging and radiometry applications. Noise and Reliability in Electronic Devices   Web Link As the devices scale down, even though the absolute noise magnitude gets smaller, since the voltages also scale down, the signal-to-noise ratio decreases. Noise models developed for large area devices based on the large-number-electron averaging theories break down. In addition, in sub-micron devices, as the device dimensions approach electron mean-free path, quantum effects start to play an important role. Since noise has important implications on the reliability and performance of the device, beyond a certain limit of scaling down, with existing models, it becomes impossible to predict the noise performance of an individual transistor, specifically a MOSFET. The lack of accurate models leads the process and circuit designer either to adapt large area-transistor models with high errors or to use a trial-and-error method leading to significant waste of valuable time. As the Semiconductor Research Corporation (SRC) has correctly concluded that there is an urgent need to measure, analyze, and model the noise characteristics of next generation sub-micron transistors. Superconductive Devices   Web Link The primary objective of this project was to fabricate YBa2Cu3O7-x thin-film microbridges for the purpose of millimeter-wave detection and mixing. Reactive sputtering and hot oxygen jet sputter fabrication techniques were employed to produce high-quality YBa2Cu3O7-x thin-films. After the initial investigation of the composition, microstructure and the DC electrical properties, these films were patterned into variable thickness microbridges for millimeter-wave detection and mixing applications. Special emphasis was given to the repeatability of the fabrication process as it applied to the transition temperature, critical current, and noise properties. Smart Skin   Web Link  Publications   Category  AllInfrared Microsensors and MEMSNoise and Reliability in ElectropyroelectricSuperconductive DevicesTransistors  Type AllOtherPeer reviewedConference paperBookBook chapters Publications per page    1  2 3 4    Year Publication   Type 2003 Published "Model for Random Telegraph Signals in Sub-Micron MOSFETs," N. V. Amarasinghe, Z. Çelik-Butler, F. Wang and A. Zlotnicka, Solid State Electronics, vol. 47, pp. 1443-1449 (2003). Peer reviewed 2002 Published Uncooled Multi-Mirror Broadband Infrared Microbolometers, M. Almasri, Z. Çelik-Butler, D. P. Butler, Alp Yaradanakul, Ali Yildiz, IEEE/ASME Journal of Microelectromechanical Systems, vol. 11, pp. 528, 535, 2002. Category: Infrared Microsensors and MEMS Peer reviewed 2002 Published "Random Telegraph Signals in Deep Sub-Micron MOSFETs, Z. Çelik-Butler and N. V. Amarasinghe, Invited book chapter in Noise and Fluctuation Control in Electronic Devices, 2002, Editor: Alexander Balandin, ISBN: 1-58883-005-5. Category: Noise and Reliability in Electro Book chapters 2002 Published Temperature Dependence of 1/f Noise in Polysilicon Emitter Bipolar Transistors, E. Zhao, Z. Çelik-Butler, F. Thiel and R. Dutta, IEEE Transactions on Electron Devices, vol. 49, 2002. Category: Noise and Reliability in Electro Peer reviewed 2002 Published Low-Frequency Noise In Deep-Submicron Metal-Oxide Semiconductor Field-Effect Transistors, Z. Çelik-Butler, INVITED Special Topics on Noise in Semiconductors, IEE Proceedings on Circuits, Devices and Systems, vol. 149, pp. 23, 31, 2002. Category: Noise and Reliability in Electro Conference paper  Affiliations Post-Doctoral Associates: Vladimir Leonov, 1998 - 2000, Petr Vasina, 1998, Catherine Barros, 1997-1998, Lin Ren, 1997  Thesis Supervised M.S. Agha Jahanzeb, John E. Gray, Fang Wang Ph.D. Sharif Alamgir, Wiyi Yang, Jiang-Lin Wang, Wenmu He, Pao Chuan Shan, Nudiatha Vibhavie Amarasinghe, Alparslan Yardanakul, Ali Yildiz  Appointments Duration Rank Department / School College / Office University / Company 2002-Present Professor Department of Nanotechnology College of Engineering University of Texas at Arlington 1996-1999 Assistant Dean of Graduate Studies and Research Electrical Engineering   Southern Methodist University 1993-1996 Associate Professor Electrical Engineering   Southern Methodist University 1990-1993 J. Lindsay Embrey Trustee Assistant Professorship Electrical Engineering   Southern Methodist University 1987-1993 Assistant Professor Electrical Engineering   Southern Methodist University  Synergistic Activities Membership 1988, 1989 IEEE-IEDM's and Annual Symposia on Electronic Materials, Processing and Characterization (1989 - 1992) and International Conference on Noise in Physical Systems and 1/f Fluctuations (1993, 1999, 2001, 2003); General Chair of TEXMEMS II Workshop  Support  Duration Title Sponsor Amount Status 9/1/2001-8/31/2002 Broad-Band Pyroelectric IR Detectors NASA-Langley $261,000 Previous 8/1/2001-8/31/2004 Measurements and Modeling of Noise in Advanced Bipolar Texas Instruments SRC $210,000. Previous 8/1/2001-7/31/2004 Micromachined Infrared Sensors on Flexible Substrates National Science Foundation, $300,000. Previous 3/1/2001-12/31/2002 Noise Performance and Modeling of Bipolar Transistors Legerity $47,263 Previous 10/1/2001-3/31/2002 Small Grants for Exploratory Research National Science Foundation $70,000. Current 1/1/2002-12/31/2003 Compact, Scalable Computer Models for Noise in Advanced CMOS Texas Higher Education Coordinating Board, $148,290 Previous  News Articles Married to Their Research and to Each Other Read More... Detect and Defend," Read More... "Professors' Project Gives NASA a 'FIRST'," Read More...  Teaching   EE 5344 - Introduction to MEMS Fall 2009 Download Syllabus (69.5KB. This syllabus was uploaded Tuesday 25th, August 2009 03:06:19 PM and is subject to change.) Contact Information Nanofab Center Phone: 817-272-1309  Email: zbutler@uta.edu For the Official List of Courses for registration, please visit MyMav - Schedule of Classes  Additional Information Awards and Honors Web Link 1998 - present IEEE-Electron Devices Society Distinguished Lecturer, March 2001 SMU Graduate Student Council Outstanding EE Faculty Award for 2000-2001, May 1997 Sigma Xi Research Award for SMU Chapter, April 1997 SMU Graduate Student Council Outstanding EE Faculty Award for 1996-1997, March 1997 IEEE-Electron Devices Society, Dallas Section Outstanding Service Award Sponsors and Collaborators Texas Higher Education Coordinating Board - ARP/ATP National Science Foundation Army Research Office. NASA Semiconductor Research Corporation DARPA Raytheon Company Texas Instruments Inc. Motorola Inc. Legerity Corporation Metroplex Research Consortium for Electronic Devices and Materials (MRCEDM)