1. Remarks on the angular distribution of light scattering from absorbing solid surfaces. E.Anastassakis, A.Anastassiadou and Y.Raptis, XVII European Congress on Molecular Spectroscopy, Madrid, 1985.

2. Raman study of AlSb. Y.S. Raptis and E. Anastassakis, 3rd Intern. Conf. on Phonon Physics, and 6th Intern. Conf. on Phonon Scattering in Condenced Matter, Heidelberg 1989.

3. Second-order Raman scattering near the indirect gap of AlSb. Yannis Raptis and Evangelos Anastassakis, 20th Intern. Conf. on the Physics of Semicond., Thessaloniki 1990.

4. Pressure dependence of zone-boundary phonons of AlSb. Yiannis S. Raptis and K. Syassen, XXIX Annual Scientific Meeting of the Europ. High Press. Research Group, Thessaloniki 1991.

5. Raman study of C/Cunder pressure. Y.S. Raptis, D.W. Snoke, K. Syassen, S. Roth, P. Bernier and A. Zahab, XXIX Annual Scientific Meeting of the Europ. High Press. Research Group, Thessaloniki 1991.

6. Arsenic passivation of MBE grown GaAs(100): Structural and Electronic properties of the decapped surfaces. U. Resch, N. Esser, Y.S. Raptis, W. Richter, J. Wasserfall, A. Forster and D.I. Westwood, 12th European Conf. of Surface Science, 9-12 September 1991. Stickholm, Sweden.

7. XRD and Raman characterization of GaAs buffer layers grown on SI-GaAs substrates at reduced temperatures. M. Calamiotou, Y.S. Raptis, M. Lagadas, Z. Hatzopoulos and E. Anastassakis, 1st Europ. Symp. on X-ray Topogr. and high resolutiïn diffraction, Marseille 1992.

8. Stabilized Cubic Zirconia : A Raman Study under Uniaxial Stress. J. Cai, Y.S. Raptis and E. Anastassakis, 13th Gener. Conference of the Condenced Matter Division of the Europ. Phys. Society, Regensburg 1993.

9. Raman study of LiYF, under variable pressure and temperature: observation of a pressure induced phase transition. C. Raptis and  Y.S. Raptis, 13th Gener. Conference of the Condenced Matter Division of the Europ. Phys. Society, Regensburg 1993.

10. Growth mode and interface formation of In on GaAs(001) - (2x4). U.Resch, N. Blick, Y. S. Raptis, N. Esser, Th. Werningaus, U. Rossow,  W. Richter, 4th International Conference on the Formation of Semiconductor Interfaces, 14-18 June 1993, Julich, Germany.

11. High pressure Raman study of the superionic glass xAgI(1-x)AgMoO. Y.S. Raptis, C. Raptis, E. Kamitsos, G, Chryssikos, I. Kapoutsis, 14th General Conference of the Condenced Matter Division of the European Physical Society, Madrid 1994.

12. Optical studies of GaSe, under variable pressure and temperature. J.Cai, T. Wen, Y.S. Raptis, E. Anastassakis, M. v.d. Emde, Á. Markl, A. Krost, W. Richter, D.R.T. Zahn, 14th General Conference of the Condenced Matter Division of the European Physical Society, Madrid 1994.

13. Luminescence from Silicon Nanostructures fabricated by using conventional Lithographic and Reactive Ion Etching techniques. A.G. Nassiopoulos, S. Grigoropoulos, A. Travlos, S. Ladas, S. Kennou, I. Raptis, D. Papadimitriou, 187th General Meeting of the Electrochemical Society, U.S.A. 1995.

14. Optical studies of ZnSe-ZnS/GaAs(100) Single Quantum Well, V.V. Tishchenko, M.S. Brodin, Y.S. Raptis and E. Anastassakis, 7th International Conference on II-VI Compounds and Devices, Edinburg, 1995

15. Pressure induced phase transition in crystalline ZnAl₂S₄ ,V.V. Ursaki, Y.S. Raptis, I.M. Tiginyanu, E. Anastassakis, I.I. Burlakov, N.A. Moldovyan, 10th International Conference on Ternary and Multinary Compounds, Stuttgart 1995.

16. Study of elastically strained porous silicon for potential use in micro-IR-sensors. D. Papadimitriou, Y.S. Raptis, E. Anastassakis, 15th General Conf. of the Condenced Matter Division of the European Physical Society, Baveno 1996, Italy.

17. Laser induced fluorescence as a diagnostic tool in atherosclerosis, N. Anastassopoulou, B. Arapoglou, P. Demakakos, M. Makropoulou, A. Paphiti, Y. S. Raptis, A. A. Serafetinides, Ninth International School on Quantum Electronics : Lasers - Physics and Applications, Varna, BULGARIA, September 1996, Proceedings SPIE, 3052, 394 (1996).

18. Interface roughness and confined LO phonon modes in (ZnSe)₂(ZnS)₁₁/GaAs(100) superlattices grown by PAVPE, V. V. Tishchenko, Y. S. Raptis, E. Anastassakis, Internationa Conference on Optical Diagnosis of Materials and Devices for Opto- Micro- and Quantum Electronics (OPTDIM-97), Kiev, UKRAINE, 13-15 May, 1997. SPIE Proceed. -“Int. Conf. on Optical Diagnostics of Materials and Devices for Opto-, Micro- and Quantum Electronics - OPTDIM’97”, 13-15 May 1997, Kyiv, Ukraine, p. 346-350.

19. Pressure-induced amorphization of germanium diselenide. Z. V. Popovic, Y. S. Raptis, E. Anastassakis, Z. Jaksic, 17^th Internationsl Conference on Amorphous and Microcrystalline Semiconductors (ICAMS-17), Budapest HUNGARY, 25-29 August 1997.

20. Porous Silicon of Variable Porosity under high Hydrostatic Pressure : Raman and Photoluminescence Studies. D. Papadimitriou, Y. S. Raptis, A. G. Nassiopoulou and G. Kaltsas, 2^nd Int. Workshop on Light Emitting Low Dimensional Si-structures, Lagonissi Attiki, June 1997.

21. Raman scattering study of pressure-induced phase transition in ZnAl_2(1-X)Ga_2xS₄. V. V. Ursaki, I. I. Burlakov, I. M. Tiginyanu, Y. S. Raptis, E. Anastassakis, A. Anedda and A. Serpi, 11^th Int. Conf. on Ternary and Multinary Compounds, ICTMC-11, Salford, 8-12, September 1997, Proceedings : Inst. Phys. Conf. Ser. No 152 : Section D: Optical and Electrical Properties, p. 605-608, IOP Publ. Ltd, 1998.

22. Raman Modes in Porous GaP under Hydrostatic Pressure,, I. M. Tiginyanu, V. V. Ursaki, Y. S. Raptis, V. Stergiou, E. Anastassakis, H. L. Hartnagel, A. Vogt, B. Prevot, C. Schwab, VIII^th Int. Conf. on High Pressure Semiconductor Physics, Thessaloniki, Greece, 9-13 August, 1998.

23. Raman study of ZnAl_2(1-x)Ga_2xS₄ (x=0.1, 0.2, 0.4), under repeated Hydrostatic-Pressure Cycles,Y. S. Raptis, E. Anastassakis, V. V. Ursaki and I. M. Tiginyanu, XVI^th Int. Conf. on Raman Spectroscopy, (ICORS-16), Cape Town, 1998, Ed. A.M. Heyns, John Wiley &Sons, Chichester 1998.

24. Raman study of ZnWO₄ under variable Pressure and Temperature, A. Perakis, E. Sarantopoulou, Y. S. Raptis and C. Raptis, XVI^th Int. Conf. on Raman Spectroscopy, (ICORS-16), Cape Town, 1998.

25. Parameters influencing the fratness and stability of capasitive pressure sensors fabricated with wafer bonding, D. Goustouridis, D. Tsoukalas, P. Normand, A. G. Kontos and E. Anastassakis,, Eurosensors XI, 1998.

26. Laser excited autofluorescence for discrimination of atherosclerosis, M. Makropoulou, H. Drakaki, N. Anastassopoulou, Y.S. Raptis. A. A. Serafetinides, A. Pafiti, B. Tsiligris, B. Arapoglou and P. Demakakos, Proceedings of Medical Applications of Lasers in Dermatology, Cardiology, Ophthalmology, and Dentistry II, 12-15 Sept. 1998, Stockholm, Sweden, SPIE, 3564, 68-75 (1999).

27. High-pressure raman study of SnGeS3, V.C.Stergiou, Y.S.Raptis, Z.V.Popovic, E.Anastassakis, XXXVII Meeting of the European High Pressure Research Group, Montpellier, 9-11 September 1999.

28. Phonon deformation potentials of CdTe, V. C. Stergiou, Y. S. Raptis, E. Sarantopoulou, E. Anastassakis, N. T. Pelekanos, A. Arnoult, S. Tatarenko, K. Saminadayar, XXXVII Meeting of the European High Pressure Research Group, Montpellier, 9-11 September 1999.

29. Raman Study of Elastically Strained Bulk and Layered Structures based on CdTe, V. C. Stergiou, Y. S. Raptis, E. Anastassakis, N. T. Pelekanos, A. Nahmani, J. Cibert, 9^th High Pressure Semiconductor Physics, Sapporo, 24-28 September, 2000.

30. Influence of Ge Implantation on the Mechanical Properties of Polycrystalline Silicon Microstructures, S. Polymenakos, V. C. Stergiou, A. G. Kontos, Chr. Tsamis, Y. S. Raptis, D. Tsoukalas, 12^th Micro Mechanics Europe, Cork, Ireland, 16 September 2001.

31. Strain Characterization, by Raman Spectroscopy, of Epitaxially Grown Superlattices. M. Siakavellas, A. G. Kontos and Y. S. Raptis, NATO Advanced Research Workshop On Atomistic Aspects of Epitaxial Growth, Corfu, 25-30 June, 2001. Published in Atomistic Aspects of Epitaxial Growth, 449-455 Ed. M. Kotrla et al., NATO Science Series, Kluwer Academic Publishers, Netherlands, 2002.

32. Temperarure and Composition Dependence of Raman Scattering and Photoluminescence Emission in CuGase₂ Thin Films, C. Xue, D. Papadimitriou, Y. S. Raptis, N. Esser, W. Richter, S. Siebentritt, M. Ch. Luxsteiner, NATO Advanced Stusy Institute: Photovoltaic and Photoactive Materials, Properties Technology and Applications, Sozopol, Bulgaria, September 2001.

33. Structural and Optical Characterization of CuGaSe₂ Thin Films under Excitation with Above and Below Band Gap Laser Light, C. Xue, D. Papadimitriou, N. Esser, W. Richter, S. Siebentritt, M. Ch. Luxsteiner, 2002 MRS Spring Meeting, San Francisco, California, April 2002.

34. Raman study of nitrogen-doped ZnSSe/GaAs epilayers, A.G. Kontos, Y.S. Raptis, M. Straßburg, U.W. Pohl, D. Bimberg, E-MRS 2002 Spring Meeting, Strasburg, June 18-21, 2002.

35. Raman study of b-Sr_0.33V₂O₅ micro-crystals under high pressure, A. G. Kontos, D. Lampakis, Z. V. Popovic, Y. S. Raptis, E. Liarokapis, M. Isobe and Y. Ueda, 12^th Int. Conf. on High Pressure Semiconductor Physics (HPSP-12), Barcelona, 31 July-3 August 2006.

36. High pressure Raman study of DyPO₄ at room and low temperatures, A. G. Kontos, E. Stavrou, V. Malamos, Y. S. Raptis and C. Raptis, 12^th Int. Conf. on High Pressure Semiconductor Physics (HPSP-12), Barcelona, 31 July-3 August 2006.

37. Laser annealing of implanted Silicon Carbide and Raman Characterization, I. Zergioti, A.G. Kontos, K. Zekentes, C. Boutopoulos, P. Terzis, Y.S. Raptis, SPIE International Conference on High Power Laser Ablation Sagebrush Inn & Conference Center Taos, New Mexico USA 7-12 May 2006, vol. 6261, pp. 626135 (2006).

38. Laser annealing of implanted Silicon Carbide and Raman Characterization, I. Zergioti, K. Zekentes, A.G. Kontos, Y.S. Raptis  poster presentation at E-MRS IUMRS ICEM 2006 Spring Meeting, Nice, France - May 29 – June 2, 2006 SYMPOSIUM. H.

39. Optical characterization of the structural changes induced in fused silica by ultraviolet femtosecond laser filaments I. Zergioti, D. G. Papazoglou, A.G. Kontos, Y.S. Raptis, S. Tzortzakis, oral presentation, E-MRS Symposium P, 28 May – 1 June 2007, Strasbourg France.

40. Raman studies (SERS) of Rhodamine 6G on random and periodic arrays of silver nanoparticles, I. Theodorakos, A. Gavriilelli, J. Tang, I. Raptis, A. Gerardino, Th. Speliotis, N. Papanikolaou, I. Zergioti, D. Tsoukalas, Y.S. Raptis, Emerging trends & Novel Materials in Photonics, Delphi, 7-9 September 2009.

41. Co-sensitization of nanostructured titania films by quantum dot chalcogenides and molecular dyes,  A.G.Kontos, V. Likodimos, E. Vassalou, I. Kapogianni, T. Stergiopoulos, Y.S. Raptis, C. Raptis, P. Falaras, 4^th International Conference on Micro-Nanoelectronics, Nanotechnologies and MEMS, Athens, 12-15 December 2010.

42. SERS studies of rhodamine absorbed on Ag-NP gratings, developed by inert gas aggregation, P. Panagopoulou, N. Pantiskos, P. Photopoulos, J. Tang, D. Tsoukalas, Y. S. Raptis,  4^th International Conference on Micro-Nanoelectronics, Nanotechnologies and MEMS, Athens, 12-15 December 2010.

43. Raman study of CVD-grown and laser-annealed Nanocrystalline Si for Soalr-Cell applications, Y. Theodorakos, I. Kalpyris, I. Zergioti, V. Vamvakas, K. Kotsovos, C. Sarigiannidis, Y. S. Raptis, 9^th International Conference in Nanoscienses & Nanotechnologies, Thessaloniki 2012.

44. Photoluminescence study of Si nanocrystals embedded in SiO2 matrixes,  E. Verrelli, A. Kontos, Y. Raptis, P. Dimitrakis, P. Normand, D. Tsoukalas, 5^th International Conference on Micro-Nanoelectronics, Nanotechnologies and MEMS, Heraklion, Crete, Greece, 7-10 October 2012,

45. Selective SERS of rhodamine-R6G on Ag-nanoparticles organized in linear arrays. M. Panagopoulou, P. Photopoulos, D. Tsoukalas, Y.S. Raptis, 9^th International Conference in Nanoscienses & Nanotechnologies, Thessaloniki 2012.

46. Growth and characterization of thermochromic vanadium oxide thin films, M. Panagopoulou, Y. S. Raptis, D. Tsoukalas, poster presented at the 10^th International Conference on Nanosciences & Nanotechnologies (NN13),2013, Thessaloniki.

47. Study of structural and optical properties of W- and Mg-co-sputtered VO2 thin layers, for thermochromic applications, M.Panagopoulou, E.Gagaoudakis, N.Boukos, E.Aperathitis, G.Kiriakidis, D.Tsoukalas, Y.S.Raptis, G. Iliadis, poster presented at the 2014 E-MRS Spring meeting, Lille, France.

48. The effect of buffer layer on the thermochromic properties of undoped and W-Mg-doped RF-sputtered VO2 thin films, M. Panagopoulou, E. Gagaoudakis, V. Kampylafka, G. Michail, N. Boukos, E. Aperathitis, G. Kiriakidis, D. Tsoukalas, Y.S. Raptis, poster presented at the 5^th IS-TCM, 2014, Chania, Crete

49. RF sputtering of VO₂ films – T_growth-, Substrate-, and Doping-Effects, E. Gagaoudakis, M. Panagopoulou, I. Kortidis, G. Michail, N. Vourdas, E. Aperathitis, D. Tsoukalas, Y. S. Raptis, G. Kiriakidis, oral presented at the 5^th IS-TCM, 2014, Chania, Crete

50. A comparative study of two APCVD systems for the growth of thermochromic vanadium dioxide coatings, D. Louloudakis1, D. Vernardou, E. Spanakis, M. Panagopoulou, G. Raptis, G. Kiriakidis, N. Katsarakis, E. Koudoumas, oral presented at the 2015 MRS Spring meeting, San Francisco, California.

51. Effect of deposition temperature and amount of vanadium precursor on the thermochromic performance of VO2 coatings grown by atmospheric pressure CVD, D. Louloudakis, D. Vernardou, E. Spanakis, M. Panagopoulou, Y. Raptis, G. Kiriakidis, N. Katsarakis, E. Koudouma, poster presented at the 2015 E-MRS Spring meeting, Lille, France.

52. Effect of oxygen source on the properties of vanadium oxide coatings grown by atmospheric pressure CVD, D. Louloudakis, D. Vernardou, E. Spanakis, M. Panagopoulou, Y. Raptis, G. Kiriakidis, N. Katsarakis, E. Koudoumas, poster presented at the 2015 E-MRS Spring meeting, Lille, France.

53. Effect of O2 flow rate on the thermochromic performance of VO2 coatings grown by atmospheric pressure CVD, D. Louloudakis, D. Vernardou, E. Spanakis, S. Dokianakis, M. Panagopoulou, G. Raptis, E. Aperathitis, G. Kiriakidis, N. Katsarakis, and E. Koudoumas, has been accepted for oral presentation in EuroCVD 20, 2015, Switzerland

54. Raman and Photoluminescence investigation of CsSnI3 perovskite phase transitions, A. Kontos, S. Aggeli, E. Siranidi, M. Arfanis, M. Antoniadou, Y. Raptis, P. Trikalitis, P. Falaras, (oral), Int. Conf, Hybrid Organic Photovoltaics, Rome, May 2015.