A. Selim Olçum's Homepage

[Electrical & Electronics Engineering Department]   [Advanced Research Laboratory]

 

Contact Information:
Address:
Bilkent University
Department of Electrical Engineering
06800 Bilkent     Ankara / Turkey
 
Office: EE-315
Office Phone: +90 (312) 290 2930
IAL Office Phone: +90 (312) 290 1972
IAL Lab Phone: +90 (312) 290 2090
Fax: +90 (312) 266 4192
 
e-mail: 

Education:        

  Bilkent University, Ankara, Turkey

Ph.D. Candidate in Electrical Engineering (Exp. 2010)

M.S. in Electrical Engineering, Jan 2005

B.S. in Electrical Engineering, May 2003 

              Izmir Fen Lisesi, Izmir, Turkey

                   High School of Science Diploma, 1999  

 

Publications: 

 

Journal Papers:

 

  1. M.N. Senlik, S. Olcum, H. Koymen, A. Atalar, "Radiation Impedance of an Array of Circular Capacitive Micromachined Ultrasonic Transducers", accepted for publication in IEEE Transactions on Ultrasonic Ferroelectronics and Frequency Control.
  2. V. Tas, S. Olcum, M.D. Aksoy and A. Atalar, "Reducing Anchor Loss in Micromechanical Extensional Mode Resonators", IEEE Transactions on Ultrasonic Ferroelectronics and Frequency Control, vol.57 (2), pp.448-454, 2010.
  3. H.K. Oguz, S. Olcum, M.N. Senlik, V. Tas, A. Atalar and H. Koymen, "Nonlinear Modelling of an Immersed Transmitting Capacitance Micromachined Ultrasonic Transducer for Harmonic Balance Analysis", IEEE Transactions on Ultrasonic Ferroelectronics and Frequency Control, vol.57 (2), pp.438-447, 2010.
  4. S. Olcum, A. Kocabas, G. Ertas, A. Atalar and A. Aydinli "Tunable Surface Plasmon Resonance on an Elastomeric Substrate", Optics Express, Vol. 17 (10), pp. 8542-8547, 2009.
  5. H. Köymen, M.N. Senlik, A.Atalar and S. Olcum, "Parametric Linear Modelling of Circular CMUT Membranes in Vacuum." IEEE Transactions on Ultrasonic Ferroelectronics and Frequency Control, vol.54 (6), pp.1229-1239, 2007.
  6. S. Olcum, M.N. Senlik and A. Atalar, "Optimization of the Gain-Bandwidth Product of capacitive Micromachined Ultrasonic Transducers." IEEE Transactions on Ultrasonic Ferroelectronics and Frequency Control, vol. 52 (12), pp. 2211-2219, 2005. 

 

Conference Papers:

 

 

 

  1. S. Olcum, H.K. Oguz, M.N. Senlik, F.Y. Yamaner, A. Bozkurt, A. Atalar and H. Koymen "Wafer Bonded Capacitive Micromachined Underwater Transducers", IEEE Ultrasonics Symposium, Sep 2009.
  2. M.N. Senlik, S. Olcum, H. Koymen and A. Atalar "Bandwidth, Power and Noise Considerations in Airborne CMUTs", IEEE Ultrasonics Symposium, Sep 2009.
  3. H.K. Oguz, S. Olcum, M.N. Senlik, A. Atalar and H. Koymen "Modeling of CMUTs for Harmonic Balance Analysis", IEEE Ultrasonics Symposium, Sep 2009.
  4. A. Bozbey, C.A. Tunc, S. Olcum, A. Fujimaki "Front-end Design of and Analog to Digital Converter Circuit", ISEC 2009, Japan, 2009.
  5. S. Olcum, A. Atalar, H. Koymen, K. Oguz, M.N. Senlik "Experimental Characterization of Capacitive Micromachined Ultrasonic Transducers", IEEE Ultrasonics Symposium, pp.2131 - 2134, Oct 2007.
  6. M.N. Senlik, S. Olcum, A. Atalar, "Interaction between a CMUT cell and a Liquid Medium around the Paralel Resonance Frequency", , IEEE Ultrasonics Symposium, pp.2151 - 2154, Oct 2007.
  7. H. Köymen, A. Atalar, S. Olcum, M.N. Senlik, "Radiation Impedance of Circular CMUT membranes", 19th International Congress on Acoustics, Madrid, 2007
  8. S. Olcum, A. Atalar, M.N. Senlik, H. Koymen, "Calculation of Transformer Ratio in Mason's Equivalent Circuit for cMUTs", IEEE Ultrasonics Symposium, pp.1947-1950, 2006.
  9. M.N. Senlik, A. Atalar, H. Koymen, S. Olcum, "Radiation Impedance and Equivalent Circuit for Immersed CMUT Array Element", IEEE Ultrasonics Symposium, pp.1951 - 1954, 2006.
  10. S. Olcum, A. Atalar, M.N. Senlik, H. Koymen, "Stagger Tuned cMUT Array for Wideband Airborne Applications", IEEE Ultrasonics Symposium, pp.2377 - 2380, 2006.
  11. J.M. Ortiz-Rodriguez, A.R. Hefner; D. Berning, C. Hood, S. Olcum, "Computer-Controlled Characterization of High-Voltage, High-Frequency SiC Devices", Computers in Power Electronics,  pp.300 - 305, July 2006.  
  12. M.N. Senlik, S. Olcum and A. Atalar, "Improved Performance of cMUT with non-uniform membranes", IEEE Ultrasonics Symposium, pp.597-600, 2005.
  13. S. Olcum, M.N. Senlik, C. Bayram and A. Atalar, "Design Charts to Maximize the Gain-Bandwidth Product of Capacitive Micromachined Ultrasonic Transducers", IEEE Ultrasonics Symposium, pp.1941-1944, 2005.
  14. C. Bayram, S. Olcum, M.N. Senlik and A. Atalar, "Bandwidth Improvement in a cMUT Array with Mixed Sized Elements", IEEE Ultrasonics Symposium, pp.1956-1959, 2005.  

 

Presentations:

 

  1. S. Olcum, A. Kocabas, G. Ertas, A. Atalar and A. Aydinli, "Tunable Surface Enhanced Raman Spectroscopy on an Elastomeric Substrate", ECASIA 2009, Antalya, 2009.
  2. S. Olcum. E. Karademir, V. Tas, I. Akca, A. Kocabas, A. Atalar and A. Aydinli, "An Optical Microcantilever with Integrated Grating Coupler", CLEO Europe 2009, Munich, Germany, June 14-19, 2009.
  3. S.B. Selvi, V. Tas, D. Aksoy, S. Olcum and A. Atalar, "Simulation of Effective Elastic Modulus Estimation from Torsional Harmonics in the Presence of Noise", 2nd Multifrequency AFM Conference, Madrid, Spain, June 15-16, 2009.
  4. S. Olcum, H.K. Oguz, M.N. Senlik, A. Atalar and H. Köymen, "A New Underwater Transducer Technology: Capacitive Micromachined Ultrasonic Transducers", NanoTR 5, Eskisehir, Turkey, June 8-12, 2009.
  5. S. Olcum, A. Kocabaş, G. Ertaş, A. Atalar and A. Aydınlı, "Tunable Surface Plasmon Resonance on an Elastomeric Grating", NanoTR 5, Eskisehir, Turkey, June 8-12, 2009.
  6. H.K. Oguz, S. Olcum, M.N. Şenlik, A. Atalar and H. Köymen, "Modeling of cMUT for Harmonic Balance Analysis", 8th International Workshop on Micromachined Ultrasonic Transducers, Besancon, France, 2009.
  7. M.N. Şenlik, S. Olcum, V. Tas, H. Köymen and A. Atalar, "Sparse Arrangement of the cMUT Cells in an Array", 8th International Workshop on Micromachined Ultrasonic Transducers, Besancon, France, 2009.
  8. S.B. Selvi, V. Tas, D. Aksoy, S. Olcum, O. Sahin and A. Atalar, "Accuracy of Elastic Modulus Estimation from Higher Harmonic Data of a Tapping Mode Harmonic Cantilever", 1st Multifrequency AFM Conference, Madrid, Spain, Sep 14-15, 2008.
  9. S. Olcum, A. Kocabaş, S. Şenlik, G. Ertaş, A. Atalar and A. Aydınlı, "An Elastomeric Tunable SERS Substrate", 2008 International Conference on Nanoscience + Technology, Keystone, CO, USA, July 21, 2008.
  10. S. Olcum, A. Atalar, H. Köymen and  M.N. Senlik, "Fabrication and Characterization of Capacitive Micromachined Ultrasonic Transducers", 6th International Workshop on Micromachined Ultrasonic Transducers, Antalya, Turkey, 2007.
  11. R.O. Guldiken, S. Olcum, J. Zahorian and F.L. Degertekin, "Analytical, FEA and Experimental Stress Study of CMUT Membrane during Fabrication", 6th International Workshop on Micromachined Ultrasonic Transducers, Antalya, Turkey, 2007.
  12. J. Zahorian, R.O. Guldiken,S. Olcum, M. Karaman and F.L. Degertekin, "Fabrication and Testing of CMUT Arrays for Intravascular Ultrasound (IVUS) Imaging", 6th International Workshop on Micromachined Ultrasonic Transducers, Antalya, Turkey, 2007.
  13. M.N. Şenlik, A. Atalar, H. Köymen and S. Olcum, "A Precise Lumped Element Model for a Circular CMUT Membrane", 6th International Workshop on Micromachined Ultrasonic Transducers, Antalya, Turkey, 2007.
  14. S. Olcum, A. Atalar, H. Köymen and M.N. Şenlik, "Optimization of the Gain-Bandiwidth Product of CMUTs", 5th International Workshop on Micromachined Ultrasonic Transducers, Munich, Germany, 2006.
  15. M.N. Senlik, A. Atalar, H. Köymen and S. Olcum, "An Equivalent Circuit for Capacitive Micromachined Ultrasonic Transducers", 5th International Workshop on Micromachined Ultrasonic Transducers, Munich, Germany, 2006.

 

Experience:      

 

               Bilkent University, Ankara, Turkey

               Dept. of Electrical Engineering, Research Assistant,                                     Sep 2003 - Present

·            Capacitive Micromachined Ultrasonic Transducers.

·            Tuning Surface Plasmon Polariton Resonances (Collaboration with Prof. A. Aydınlı Group)

·            Harmonic microcantilevers for Atomic Force Microscopy

·            All optical Cantilever (Collaboration with Prof. A. Aydınlı Group)

 

Bilkent University, Ankara, Turkey

Advanced Research Laboratory, Superuser of PECVD reactors,              Sep 2007 - Present

Dept. of Electrical Engineering, Teaching Assistant,                                    Sep 2003 - Present

Advanced Research Laboratory, Superuser of RIE reactor,                        Sep 2007 - Sep 2008

Dept. of Electrical Engineering, System Administrator,                                Sep 2005 - Sep 2008

              

 

               Georgia Institute of Technology, Atlanta, Georgia

               Micromachined Sensors and Transducers Laboratory, Visiting Scholar,    July 2006 - Jan 2007

·            Low temperature fabrication and characterization of Capacitive Micromachined Ultrasonic Transducers

           

National Institute of Standards and Technology, Gaithersburg, MD

               Semiconductor Electronics Division, Device Technology Group, Jun-Sep 2003

·            Characterization of Microhotplate-based Gas Sensor with LabWindows CVI.

 

               Bilkent University, Ankara, Turkey

               Dept. of Electrical Engineering, Senior Project, Sep 2002 - May 2003

·            A new design of capacitive Micromachined Ultrasonic Transducer, Its simulation with ANSYS and optimization for best performance.

 

               National Institute of Standards and Technology, Gaithersburg, MD

               Semiconductor Electronics Division, Device Technology Group, Jun-Sep 2002

·            Design and Implementation of a high power, high voltage test system for characterizing SiC devices, written in C with LabWindows CVI.

·            Post Processing of a Microhotplate-based Gas Sensor in clean room.

              

               Nanomagnetics Ins., Ankara, Turkey, Jun-Aug 2001                                                              

·            Summer training on STM and AFM designing at Nanomagnetics Ins., where a full working STM designed and constructed.