Dr. Şafak GÖK
Institute of Nanotechnology

Şafak GÖK
Phone
+90 (262) 605 10 94
Email
safak.gokgtu.edu.tr
Web page
http://www.gtu.edu.tr/tr/personel/611/162180328/display.aspx
Office
Block P, Z-03
Areas of interest
Magnetoresistive biosensors, magn. semiconductors, PHOTOVOLTAIC CELLS, magn. domain imaging, AFM, MFM, PHOTOLITHOGRAPHY, FIB, Phys. Vap. Depo., magneto transport measurements, SPC.

YAYINLANMIŞ MAKALELER:

Neue Perspektiven in der Infektionspathologie durch Kombination der Atomic Force Microscopy (AFM) mit konventioneller Histochemi, Pneumologie 11 (2001) 531-532, Thieme Verlag. M. Wagner, D. Kaehler, O. Anhenn, S. Goek, C. P. Pox, C. Platz-Baudin, S. Krieger, G. Mogilevski, U. Kunze, and D. Theegarten

Magnetooptical Kerr effect of Fe-gratings, Journal of Magnetism and Magnetic Materials, Volume 240, Issues 1-3, February 2002, Pages 24-26. T. Schmitte, O. Schwöbken, S. Goek, K. Westerholt and H. Zabel

High temperature ferromagnetism in Co-implanted TiO2 rutile, J. Phys. D Appl. Phys. 42, 115005 (2009). N. Akdogan, A. Nefedov, H. Zabel, K. Westerholt, H. W. Becker, C. Somsen, S. Goek, A. Bashir, R. I. Khaibullin and L.R. Tagirov

Dose dependence of ferromagnetism in Co-implanted ZnO, J. Appl. Phys. 105, 043907 (2009). N. Akdogan, H. Zabel, A. Nefedov, K. Westerholt, H. W. Becker, S. Goek, R. Khaibullin and L. Tagirov

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KONFERANSLAR:

Şafak Gök, Hasan Pişkin, Numan Akdoğan, Biyolojik Uygulamalar İçin Manyetodirenç Etkili Planar Hall Sensörünün Geliştirilmesi, 6. Yoğun Madde Fiziği – İzmir Toplantısı, İzmir Yüksek Teknoloji Enstitüsü, 21 Nisan 2017 (Poster).

Şafak Gök, Quantum chaos with microwaves, Department of Applied Solid State Physics, Freitagsseminare 2006 Ruhr-University Bochum, Bochum-Germany (Small Talk).

Şafak Gök, Alexander Melnikov, Jun Ling Yang, Andreas D. Wieck, To handicraft material systems with magnetic and semiconducting properties, Deutsche Physikalische Gesellschaft Frühjahrstagung Dresden - Deutschland 2006 (Poster).

Şafak Gök, A. Melnikov, J. Jang, Electrical characterisation of (Ga,Mn)As prepared by MBE-FIB-Technique, Department of Applied Solid State Physics, Freitagsseminare 2005 Ruhr-University Bochum, Bochum-Germany (Small Talk).

Şafak Gök, Hartmut Zabel, Andreas D. Wieck, Elektrische Charakterisierung von (Ga,Mn)As, Deutsche Physikalische Gesellschaft Frühjahrstagung Berlin - Deutschland 2005 (Poster).

Şafak Gök, Andreas D. Wieck, A diluted magnetic semiconductor (Ga,Mn)As, Department of Applied Solid State Physics, Freitagsseminare 2004 Ruhr-University Bochum, Bochum-Germany (Small Talk).

Şafak Gök, Hartmut Zabel, Andreas D. Wieck, A diluted magnetic semiconductor: (Ga,Mn)As, International Workshop: Spintronics RUB, Bochum - Germany 2004 (Poster).

Şafak Gök, Hartmut Zabel, MFM Untersuchungen an Co-, Dy- und Mn-implantierten Proben, Durchlauf durch alle Teilprojekte, Multimediazentrum der Ruhr-Universität Bochum, Oktober 2003, Bochum-Germany (Small Talk).

Alexander Melnikov, Şafak Gök, Sinan Ünlübayır, Peter Schafmeister, Rolf Wernhardt, D. Tichonov, Kurt Westerholt, Dirk Reuter, Andreas D. Wieck, Co and Dy Focused Ion Beam Implantation In GaAs, Symposia: E-Ion beams for nanoscale modification of the E-MRS 10-13 June 2003, Strasbourg - France (Poster).

Alexander Melnikov, Sinan Ünlübayır, Şafak Gök, Peter Schafmeister, Rolf Wernhardt, Peter Stauche, Dirk Reuter, Andreas D. Wieck, Liquid metal ion sources, for FIB implantation of magnetic ions, Deutsche Physikalische Gesellschaft Frühjahrstagung Dresden - Deutschland 2003 (Poster).

Ellen Schuster, Masaki Doi, Werner Keune, Till Schmitte, Alexei Nefedov, Şafak Gök, Katharina Theis-Bröhl, Hartmut Zabel, Structure and magnetic properties of [Fe(1ML)/Pt(1ML)]n epitaxial superlattices on GaAs(001), Deutsche Physikalische Gesellschaft Frühjahrstagung Dresden - Deutschland 2003 (Poster).

Şafak Gök, Alexander Melnikov, Dirk Reuter, Andreas Dirk Wieck, AFM and MFM studies on IPG-Transistors and IP-Inductive Coils, Nato-GYTE-Tübitak Workshop, İstanbul - Türkiye, 2003 (Poster).

K. Theis-Bröhl, T. Schmitte, V. Leiner, A. Nefedov, Şafak Gök, H. Zabel, and S. Kirsch, Fe-nanowires magnetization reversal study by polarized neutron scattering and MOKE, Spring meeting of German Physical Society 2002, Regensburg-Germany (Talk).

Till Schmitte, Katharina Theis-Bröhl, Vincent Leiner, Şafak Gök, Hartmut Zabel, MOKE study of the anisotropy of Fe nanowires, Deutsche Physikalische Gesellschaft Frühjahrstagung Regensburg - Deutschland 2002 (Poster).

Katharina Theis-Bröhl, Till Schmitte, Vincent Leiner, Alexei Nefedov, Şafak Gök, Hartmut Zabel, Siegfried Kirsch, Fe-nanowires: magnetization reversal study by polarized neutron scattering and MOKE, Deutsche Physikalische Gesellschaft Frühjahrstagung Regensburg - Deutschland 2002 (Poster).

A. Nefedov, T. Schmitte, Şafak Gök, H. Zabel, E. Schuster, M. Doi, and W. Keune, [Fe/Pt]n/GaAs(001) superlattices: study by x-ray scattering, MOKE and MFM, Spring meeting of German Physical Society (DPG) 2001, Hamburg - Germany (Poster).

T. Schmitte, Şafak Gök, O. Schwöbken, K. Westerholt, and H. Zabel, Magnetooptical diffraction of ferromagnetic microstructures, Symposiom on metallic multilayers June 24-29 2001 Eurogress, Aachen-Germany (Poster).

Şafak Gök, Hartmut Zabel, Magnetic domain configuration in exchange-coupled NiO/Co bilayer films, Department of Experimental Physics, Mittwochsseminare 2001, Ruhr-University Bochum, Bochum-Germany (Small Talk).

Şafak Gök, Abbildung magnetischer Domänen, Department of Applied Solid State Physics November 2001, Ruhr-University Bochum, Bochum-Germany (Small Talk).

T. Schmitte, Şafak Gök, O. Schwöbken, K. Westerholt, and H. Zabel, Magnetooptical response from Fe microstructures, Spring meeting of German Physical Spciety 2001, Hamburg-Germany (Talk).

Şafak Gök, Ulrich Köhler, Schwingungsspektroskopie an Oberflächen, Ruhr-Universität Bochum 1998, Bochum-Germany (Small Talk).

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ÇEVİRİLER:

Peter Grünberg, "Manyetik Süper Örgüler", Phys. Bl. 49 (1993) Nr. 1, s. 27-30.

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DİĞER YAYINLAR:

Şafak Gök, doktora tezi: "Electrical and magnetic investigation on transition metal implanted GaAs", Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universitaet Bochum, October 2006.

Şafak Gök, Erdem Demirci, Mustafa Öztürk ve Numan Akdoğan,Gebze Teknik Üniversitesi Mikro/Nano Aygıt Üretim Laboratuvarı, CleanroomNews, 29 Kasım 2017.

Şafak GÖK, Okan ÖZDEMİR, Özlem AKBULUT, Fatmanur KOCAMAN, Nanoteknoloji alanında gelişmiş ülke uygulamları, Nanoteknolojinin sanayileştirilmesi, Nanoteknoloji Raporu, 7 Eylül 2018.

  • Third Cycle (Doctoral): Institute for Applied Solid State Physics
    Ruhr-Universitaet Bochum, Bochum, Germany
    Thesis: “Electrical and magnetic investigations on transition metal implanted GaAs” (written in English)
    Supervisor: Prof. Dr. Andreas D. Wieck
    http://www.afp.rub.de/
  • Second Cycle (Master's): Institute for Experimental Physics/Condensed Matters Physics
    Ruhr-Universitaet Bochum, Bochum, Germany
    Thesis: “Imaging of magnetic domains” (written in German: "Abbildung magnetischer Domänen")
    Supervisor: Prof. Dr. Dr. h.c. Hartmut Zabel
    https://www.physik.ruhr-uni-bochum.de/fakultaet/lehrstuehle-und-arbeitsgruppen/pg/prof-dr-dr-hc-h-zabel.html
  • First Cycle (Undergraduate): Department of Engineering Physics, Faculty of Natural Sciences
    Ankara University, Ankara, Turkey
    Thesis: “Semiconductor Laser Diodes” (written in Turkish: "Yarıiletken laser diyotlar")
    Supervisor: Prof. Dr. Fuat Bayrakçeken
    http://phys.eng.ankara.edu.tr/
Apr 2017 - to date
Gebze Technical University Micro/Nano Device Fabrication Laboratory Responsible Staff

SCHOLARSHIP (01.04.2016 - 01.04.2018)
TÜBİTAK – 2232 YURDA DÖNÜŞ ARAŞTIRMA BURS PROGRAMI
Project Title: Biyo uygulamalar için manyetodirenç etkili planar Hall sensörünün geliştirilmesi

Mar 12 – Jun 13
HAYS TEMP GmbH Project engineer

Department of process analytics (Feb 2013 – May 2013)
Evonik Industries AG, Hanau, Germany
Process developing of Evonik Degussa manufacturing technology
Planning and controlling of operational and laboratory tests
Cooperation at development projects
Working on offer and documentation

Department of process technology (Mar 2012 – Oct 2012)
Infineon Technologies Bipolar GmbH, Warstein, Germany
Responsible engineer for high power metal contact deposition process
Responsible engineer for thermal annealing process of ohmic contacts
Diode, thyristor and resistance production for high power applications
Cleaning process of Si wafer
Project work
Creating and optimisation of work instruction documents
Employee training
Failure mode and effect analysis (FMEA) and risk analysis
Analysis, statistics and presentation of the outcome
Statistical process controlling (SPC)

Dec 08 – Feb 12 Production and process engineer
Odersun AG, Fuerstenwalde/Spree, Germany
Thin film solar cell production
Responsible engineer for growth process of absorber layer (CuInS2)
Production and process stability
Supporting the research and development department
Realisation and implementation of innovative concepts
Induction and training of Employee
Analysis, statistics and presentation of the results
Creation of instructions for working, checking and maintenance
Programming of control charts with JUMP

Feb 02 – Mar 07 Research Assistant
Ruhr-Universitaet Bochum
Institute for Applied Solid State Physics
Research of new material systems
Structural and magnetic characterisation
Photo lithography
High vacuum metal deposition
Atomic and magnetic force microscopy
Focused ion beam implantation
Wedge bonding
Cryostat and test engineering for cryogenic measurements
Supervising of students

Feb 02 – Mar 07 Scientific staff member in SFB (Sonderforschungsbereich) Project 491 at Institute for Applied Solid State Physics, Project:
„Magnetic hetero films: Spin structures and spin transport“

Sep.00–Feb.02 Student Assistant
Ruhr-Universitaet Bochum

Oct.94–Feb.96 German as a foreign language at Ruhr-University Bochum, Bochum, Germany
Preparation for the German examination for approval to study Physics
Certification: admission certificate

Apr.93–Mai.94 English as a foreign language at Ankara University, Ankara, Turkey
Participation

Jul.91–Aug.91 Summer internship, Çekmece State Nuclear Research and Education Centre Istanbul, Turkey
Determination/analysis of radioactive pollution in the surrounding of the facility
Non-destructive test methods

17-18/08/2007 Project management basics certificates
14-15/09/2007 Project management advanced certificates

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