Resume

Education

• Taphanhin High School,
  Taphanhin, Phichit, Thailand
• B. Eng in Electrical and Electronic Engineering
  Asian University
  Chonburi, Thailand
• M. Sc. in Microelectronics and Microsystems Engineering
  Hamburg University of Technology
  Hamburg, Germany
• Master of Technology Management
  Northern Institute of Technology
  Hamburg, Germany
• Phd in Physics
  Tyndall National Institute, University College Cork
  Cork, Ireland

Current Position

• Post-doctoral fellow
  Max-Planck-Institute for Solid State Research
  Stuttgart, Germany

Professional Experience

• Student tutor for Physics for Engineer
  Hamburg University of Technology
• Research assistant
  Product Development Department
  Sensorik-Loesungen in Silizium (SLS) Micro Technology, Hamburg, Germany
• Student job
  Department of Materials in Electrical Engineering and Optics
  Hamburg University of Technology, Hamburg, Germany
• Student job
  Microsystem Technology department
  Hamburg University of Technology, Hamburg, Germany
• Research assistant
  Institute of High Voltage and High Current
  Dresden University of Technology, Dresden, Germany
• Trainee as Electrical Maintenance Assistant
  Morrison Knudsen (Thailand) Ltd, Rayong, Thailand

Research Interests

opal-based photonic crystals, noise-assisted order, plasmonic, metamaterials


Publications


Journals

1. G. Kocher, W. Khunsin, S. Arpiainen, J. Romero-Vivas, S. G. Romanov, J. Ye, B. Lange, F. Jonsson, R. Zentel, J. Ahopelto, C. M. Sotomayor Torres, Towards Si-based photonic circuits: integrating photonic crystals in Silicon-on-Insulator platforms,
Solid-State Electronics 51, 333 (2007).

2. G. Kocher, W. Khunsin, J. Romero Vivas, K. Vynck, S. Arpiainen, S. G. Romanov, B. Lange, M. Mulot, F. Jonsson, T. Charvolin, E. Hajdi, D. Cassagne, R. Zentel, J. Ahopelto, and C. M. Sotomayor Torres, Integration of SOI-based 2D- and Si-based 3D photonic crystals,
ECS Transactions 6,(4) 133 (2007).

3. W. Khunsin, S. G. Romanov, and C. M. Sotomayor Torres, Rotational symmetry of transmission patterns and ordering of opal photonic crystals ,
J. Nonlinear Opt. Phys. Mater. 17(1), 97 (2008).

4. W. Khunsin, M. Scharrer, L. Aagesen, S. G. Romanov, R. P. H. Change, and C. M. Sotomayor Torres, Chemosorption-related switching of photonic band gap in photo-conductive ZnO inverse opal,
Opt. Lett. 33, 461 (2008).

5. W. Khunsin, S. G. Romanov, C. M. Sotomayor Torres, J. Ye, R. Zentel, Optical transmission in triple-film hetero-opals,
J. Appl. Phys. 104, 013527 (2008)

6. W. Khunsin, G. Kocher, S. G. Romanov, and C. M. Sotomayor Torres, Quantitative analysis of lattice ordering in thin-film opal-based photonic crystals,
Adv. Funct. Mater. 18, 1 (2008).

7. W. Khunsin, S. G. Romanov, M. Bardosova, D. Whitehead, M. Pemble, and C. M. Sotomayor Torres, Bleaching-induced evolution of emission directionality of dye-loaded opals,
J. Opt. A: Pure and Appl. Opt. 10 115201 (2008).

Conference proceedings

1. G. Kocher, W. Khunsin, S. G. Romanov, K. Vynck, S. Arpiainen, B. Lange, J. Ye F. Jonsson, D. Cassagne, R. Zentel, J. Ahopelto, C. M. Sotomayor Torres, 2D Photonic Defect Layers in 3D Inverted Opals on Si Platforms,
Proc. IEEE ICTON. 2, 68 (2006).

2. A. Amann, W. Khunsin, G. Kocher, C. M. Sotomayor Torres, and E. P. O’Reilly, Stochastic Resonance in Photonic Crystal Growth,
Proc. SPIE 6603, 660321 (2007).

3. W. Khunsin, G. Kocher, S. G. Romanov, and C. M. Sotomayor Torres, Improving the opal-based photonic crystals by noise-assisted crystallization,
Proc. SPIE 6793, 67930B (2008).

4. W. Khunsin, P. Lovera, G. Redmond, C. M. Sotomayor Torres, M. Scharrer, L. Aagesen, R. P. H. Chang, and S. G. Romanov, Excitation-power dependence of luminescence in ZnO inverted opals with structural defects,
Proc. SPIE 6989, 69890R (2008).

5. W. Khunsin, C. M. Sotomayor Torres, and S. G. Romanov, Approaching quantitative optical diffraction analysis of crystal lattices in opal films,
Proc. SPIE 6989, 69890K (2008).


Presentations

Talks

1. M. Bardosova, N. Kehagias, G. Kocher, S. Kennedy, W. Khunsin, V. Lavayen, C. O'Dwyer, V. Reboud, J. Romero, M. Schmidt, M. Zelsmann, S. G. Romanov, C. M. Sotomayor Torres, The Photonic Nanostructures Group contribution, Workshop on Advances in Nanophotonics, Crete, Greece, 10-11 October 2005.

2. G. Kocher, W. Khunsin, S. Arpiainen, J. Romero-Vivas, S. G. Romanov, J. Ye, B. Lange, F. Jonsson, R. Zentel, J. Ahopelto, C. M. Sotomayor Torres, Towards Si-based photonic circuits: integrating photonic crystals in Silicon-on-Insulator platforms, EUROSOI 2006, Second Workshop of the Thematic Network on Silicon on Insulator technology, devices and circuits , Grenoble, France, 8-10 March 2006.

3. (Invited) G. Kocher, W. Khunsin, S. G. Romanov, K. Vynck, S. Arpiainen, B. Lange, J. Ye, F. Jonsson, D. Cassagne, R. Zentel, J. Ahopelto, and C. M. Sotomayor Torres, 2D photonic defect layers in 3D inverted opals on Si platforms, 8th International Conference on Transparent Optical Networks, 19-22 June 2006.

4. S. G. Romanov, W. Khunsin, C. M. Sotomayor Torres, J. Ye, and R. Zentel, Photonic hetero-crystals based on opal films, 12th Conference on Laser Optics, St. Petersburg, Russia, 26-30 June 2006

5. (Contributed) W. Khunsin, M. Scharrer, L. Aagesen, S. G. Romanov, R. P. H. Chang, and C. M. Sotomayor Torres, Low-power all-optical control of photonic bandgap in inverted ZnO opal, PhOREMOST 2nd annual meeting, 26-29 September 2006.

6. W. Khunsin, S. G. Romanov, J. Ye, R. Zentel and C. M. Sotomayor Torres, PBG transmission anisotropy in thin-film colloidal Photonic Crystals, European Optical Society (EOS) 1st scientific annual meeting, Paris, 16-19 October 2006.

7. (Invited) G. Kocher, W. Khunsin, J. Romero Vivas, K. Vynck, S. Arpiainen, S. G. Romanov, B. Lange, M. Mulot, F. Jonsson, T. Charvolin, E. Hajdi, D. Cassagne, R. Zentel, J. Ahopelto, C. M. Sotomayor Torres, Integration of SOI-based 2D- and Si-based 3D photonic crystals, the 211th Meeting of the Electrochemical Society, Chicago, United States, 6 – 11 May 2007.

8. W. Khunsin, G. Kocher, S. G. Romanov, C. M. Sotomayor Torres, J. Ye, B. Langer, R. Zentel, S. Arpiainen, M. Mulot, J. Ahopelto, D. A. Kurdyukov, V. G. Golubev, N. Gaponik, A. Eychmueller, and S. B. Newcomb, Light emitting inverted silicon opals on an integration silicon-on-insulator platform, MRS-Europe, Strasbourg, France, 28 May – 2 June 2007.

9. W. Khunsin, M. Scharrer, L. Aagesen, S. G. Romanov, R. P. H. Chang, and C. M. Sotomayor Torres, Linear and possible non-linear suppression of near-UV emission in ZnO inverted opal structures, CLEO/Europe-IQEC Conference, 17 -22 June 2007.

10. (Invited) G. Kocher, S. Arpiainen, W. Khunsin, J. Romero Vivas, K. Vynck, B. Lange, M. Mulot, F. Jonsson, J. Ye, S. G. Romanov, T. Charvolin, E. Hadji, D. Cassagne, R. Zentel, J. Ahopelto and C. M. Sotomayor Torres, Integration of SOI-based waveguides, 2D- and Si-based 3D photonic crystals, Workshop on advances on photonic crystals, COST Action P11: Physics of Linear, Non-linear and Active Photonic Crystals, Capri, Italy, 28 – 30 September 2007.

11. W. Khunsin, G. Kocher, S. G. Romanov, and C. M. Sotomayor Torres, Improving the opal-based photonic crystals by noise-assisted crystallization, International Conference and Workshop on Photonics and Nanotechnology (ICPN), Pattaya, Thailand, 16-18 December 2007.

12. W. Khunsin, S. G. Romanov, and C.M. Sotomayor Torres, Approaching quantitative optical diffraction analysis of crystal lattices in opal films, Photonics Europe, Strasbourg, France, 7 – 11 April 2008.

13. (Invited) W. Khunsin, P. Lovera, G. Redmond, S. G. Romanov, C. M. Sotomayor Torres, M. Scharrer, L. Aagesen, and R. P. H. Chang, Excitation-power dependence of luminescence in ZnO inverted opals with structural defects, Photonics Europe, Strasbourg, France, 7 – 11 April 2008.


Posters

1. G. Kocher, M. Bardosova, W. Khunsin, and C. M. Sotomayor Torres, Highly selective self-assembly of 3D photonic crystals on patterned substrates by capillary forces, 14th International Winterschool on New Developments in Solid State Physics, Charges and spins in nanostructures: basics and devices, Mauterndorf, Austria, 13-17 February 2006.

2. W. Khunsin, M. Bardosova, S. G. Romanov, D. Whitehead, M. Pemble, and C. M. Sotomayor Torres, Emission directionality of light sources embedded in thin homo- and heterogeneous colloidal photonic crystal films, European Material Research Society (EMRS), 29 May - 2 June 2006.

3. W. Khunsin, J. Ye, S. G. Romanov, R. Zentel, and C. M. Sotomayor Torres, Transmission anisotropy in triple-film photonic crystals, International Conference on Transparent Optical Networks (ICTON), 19-22 June 2006.

4. G. Kocher, W. Khunsin, S. G. Romanov, K. Vynck, S. Arpiainen, B. Lange, J. Ye, F. Jonsson, D. Cassagne, R. Zentel, J. Ahopelto, C. M. Sotomayor Torres, 2D photonic components in 3D inverted opals on Silicon, 28th International Conference on the Physics of Semiconductors (ICPS), Vienna, Austria, 24-28 July 2006.

5. W. Khunsin, J. Ye, S.G. Romanov, R. Zentel, and C. M. Sotomayor Torres, Hetero-structuring effect on transmission properties in Triple film opal photonic crystals, Photonic and Electromagnetic Crystal Structures Conference (PECS), Monterey, California, USA, 8-11 April 2007.

6. W. Khunsin, G. Kocher, S. G. Romanov, and C. M. Sotomayor Torres, Acoustic vibration-assisted self-assembly of 3D photonic crystals, Photonic and Electromagnetic Crystal Structures Conference (PECS), Monterey, California, USA, 8-11 April 2007.

7. A. Amann, W. Khunsin, G. Kocher, C. M. Sotomayor Torres and E. P. O'Reilly, Stochastic Resonance in Photonic Crystal Growth, SPIE: Fluctuation and Noise, Florence, Italy, 20-24 May 2007.

8. W. Khunsin, G. Kocher, S. G. Romanov, and C. M. Sotomayor Torres, Noise-enhanced regularity in self-assembled photonic crystal structure, Advances on Nanophotonics II, Erice-Sicily, Italy, 22 June - 2 July 2007

9. W. Khunsinn, M. Scharrer, L. Aagesen, S. G. Romanov, R. P. H. Chang, and C. M. Sotomayor Torres, Light emission in ZnO inverted opal – from intrinsic defects to slow light, Photonics Ireland, Galway, Ireland, 24-26 September 2007.

10. G. Kocher, W. Khunsin, J. Romero Vivas, K. Vynck, S. Arpiainen, S. G. Romanov, B. Lange, M. Mulot, T. Charvolin, E. Hadji, D.Cassagne, R. Zentel, J. Ahopelto, and C. M. Sotomayor Torres, SOI-based 2D- and Si-based 3D photonic crystals for integration, EURO-SOI, Cork, Ireland, 23-25 January 2008.

11. G. Kocher, W. Khunsin, K. Vynck, S. G. Romanov, D.Cassagne, R. Zentel, C. M. Sotomayor Torres, Deterministic 2D defect layers in high crystalline quality 3D photonic crystals, 15th International Winterschool on New Developments in Solid State Physics, Charges and spins in nanostructures: basics and devices, Mauterndorf, Austria, 18-22 February 2008.



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