Ümmügül Erözbek Güngör

E-mail

ummugul@metu.edu.tr

Department

Department of Physics

Spectroscopic and Diagnostic Analysis of a High Power AC Plasmatron Yazicioğlu, Özge; Katircioğlu, T. Yaşar; Erözbek Güngör, Ümmügül (2017-10-01) This paper presents the experimental characterization of an atmospheric (atm) pressure, high-power alternating-current (AC) three-phase plasmatron established in AR&TeCS Inc. by using optical emission spectroscopy (O...
Experimental Heating Analysis of High Frequency RF CCP Erözbek Güngör, Ümmügül; Akbar, Demiral (null; 2015-12-04)
Bulletin of the Americal Physical Society Erözbek Güngör, Ümmügül; Akbar, Demiral (2015-01-01)
MODE TRANSITIONS IN LOW-PRESSURE NITROGEN RF-CCP AT DIFFERENT FREQUENCIES Erözbek Güngör, Ümmügül (2015-01-01)
The Effects of High Frequency RF Capacitively Coupled Plasma on Tensile Strain and Functional Groups of PAN based Carbon Fiber Erözbek Güngör, Ümmügül (2014-04-25) In this study, high frequency (40.68 MHz) RF capacitively coupled discharge was used to modify tensile strain and chemical structure of unsized PAN-based carbon fiber under different RF powers, pure nitrogen gas pressures ...
Study of high radio frequency plasma discharge effects on carbon fiber using Raman spectroscopy Akbar, D.; Erözbek Güngör, Ümmügül (Elsevier BV, 2014-02-15) The goal of this research is to evaluate the potential of single and dual high RF reactors for the treatment of carbon fiber by Raman and FT-IR spectroscopies. Unsized poly-acrylonitrile (PAN) carbon fiber was treated with...
Surface Modification of Carbon Fiber with High Frequency Single and Dual RF Capacitive Coupled Plasma Akbar, Demiral; Erözbek Güngör, Ümmügül; Bilikmen, Sinan Kadri (2010-10-06) In this study we used high frequency Single and Dual RF-PECVD discharge to modify the surface of the carbon fiber under different RF powers and exposure time using pure nitrogen gas. The surface characterization of the ca...
Development of a Time-Domain Terahertz Spectrometer: using Photoconductive Antenna Detection Method Erözbek Güngör, Ümmügül (Academic Press, 2010-10-01) In this thesis, we describe the development of a time-domain terahertz (THz) spectrometer driven by two different laser sources: an Er-doped femtosecond fiber laser and a mode-locked Ti:Sapphire laser. The resulting THz el...

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