International

1. U. Shoukat, E. Akpinar, “Dependence of the formation of lyotropic uniaxial and biaxial nematic phases on the existence of Hofmeister ions in the intermicellar region”, 7th International Eurasian Conference on Biological and Chemical Sciences (EurasianBioChem 2024) October 02-04, 2024, Ankara, TURKEY.
2. L. Benzaoui, M. Dogan, E. Akpinar, “Effect of the dielectric constant of the medium on the micellization properties of an ionic surfactant in the presence of an electrolyte”, 7th International Eurasian Conference on Biological and Chemical Sciences (EurasianBioChem 2024) October 02-04, 2024, Ankara, TURKEY.
3. L. Benzaoui, E. Akpinar, “Investigation of the effect of the presence of Hofmeister ions on the properties of ionic surfactants in micellar solutions”, 7th International Eurasian Conference on Biological and Chemical Sciences (EurasianBioChem 2024) October 02-04, 2024, Ankara, TURKEY.
4. U. Shoukat, B. Okuyan, E. Akpinar, “Investigation of the relation between surfactant head group size and formation of different types of lyotropic structures in binary surfactant/dye systems: A small-angle X-ray scattering study”, 7th International Eurasian Conference on Biological and Chemical Sciences (EurasianBioChem 2024) October 02-04, 2024, Ankara, TURKEY.
5. E. Akpinar, D. Reis, A. M. F. Neto, “Experimental conditions for the stabilization of the lyotropic biaxial nematic mesophase”, 29th International Liquid Crystal Conference, 21 July-26 July 2024, Rio de Janeiro, BRAZIL.
6. E. Akpinar, G. Topcu, D. Reis, A.M. Figueiredo Neto, Effect of the anionic azo dye Sunset Yellow in lyotropic mixtures with uniaxial and biaxial nematic phases”, 28th International Liquid Crystal Conference, 24-29 July 2022, Lisbon, PORTUGAL.
7. A. M. F. Neto, Erol Akpinar, Gokhan Topcu, Dennys Reis, “Effect of the Anionic Azo Dye Sunset Yellow in Lyotropic Mixtures with Uniaxial and Biaxial Nematic Phases”, Proc. SPIE 11707, Emerging Liquid Crystal Technologies XVI, 117070H, 5 March 2021.
8. Nazli Uygur, Erol Akpinar, “Birefringences Measurements of Lyotropic Mixture DTMABr/NaSCN/DDeOH/water as a Function of Surfactant Concentration: A Laser Conoscopy Study”, 3rd International Eurasian Conference on Science, Engineering and Technology, 15-17 December 2021, Ankara, TURKEY.
9. Nazli Uygur, Erol Akpinar, “A Study on Uniaxial and Biaxial Nematic Phase Properties of a Lyotropic Mixture of SDS/Na2SO4/DeOH/water by Laser Conoscopy and Polarizing Optical Microscopy”, 3rd International Eurasian Conference on Science, Engineering and Technology, 15-17 December 2021, Ankara, TURKEY.
10. Merve Tabak, Nazli Uygur, Erol Akpinar, “Effect of the Anionic Azo Dye Tartrazine in Lyotropic Mixtures Presenting Uniaxial and Biaxial Nematic Phases”, 4th International Eurasian Conference on Biological and Chemical Sciences, 24-26 November 2021, Ankara, TURKEY.
11. Merve Tabak, Nazli Uygur, Erol Akpinar, “Effect of the Interactions Between Surfactant and Drug on the Formation of Different Lyotropic Nematic Phases”, 4th International Eurasian Conference on Biological and Chemical Sciences, 24-26 November 2021, Ankara, TURKEY.
12. Nazli Uygur, Erol Akpinar, “Effect of Surfactant Alkyl Chain Length on the Twist of Lyotropic Cholesteric Phases”, 2nd International Eurasian Conference on Biological and Chemical Sciences, 28-29 June 2019, Ankara, TURKEY. 
13. Esra Sahin, Erol Akpinar, “Effect of Micelle Size on the Biaxial Phase Domain and Uniaxial-to-Biaxial Phase Transitions in Lyotropic Cholesteric Liquid Crystals”, 2nd International Eurasian Conference on Biological and Chemical Sciences, 28-29 June 2019, Ankara, TURKEY.
14. Yagmur Kaya, Gokhan Topcu, Erol Akpinar, “Surfactant-Dye Interactions in Dodecyltrimethylammonium Bromide Solutions”, 2nd International Eurasian Conference on Biological and Chemical Sciences, 28-29 June 2019, Ankara, TURKEY.
15. Tayyibe Kapan, Erol Akpinar, “Investigation of the Effect of Strong and Weak Electrolytes on the Symmetric Tensor Invariants of Lyotropic Nematic Phases”, 2nd International Eurasian Conference on Biological and Chemical Sciences, 28-29 June 2019, Ankara, TURKEY.
16. Nazli Uygur, Seda Uyanik, Erol Akpinar. “Lyotropic Uniaxial and Biaxial Cholesteric Phase Properties of Potassium Alkanoate/Decanol/H₂O/Brucine Sulfate Mixtures”, 5th International Conference on New Trends in Chemistry, 22-24 April 2019, Athens, GREECE.
17. Sezin Cetinkaya, Emre Guner, Erol Akpinar. “Micellization properties of some tetradecylalkylammonium bromide surfactants”, 5th International Conference on New Trends in Chemistry, 22-24 April 2019, Athens, GREECE.
18. Esra Sahin, Baris Okuyan, Erol Akpinar. “Effect of dopant localization in the micelles on the formation of uniaxial and biaxial lyotropic cholesteric phases”, 5th International Conference on New Trends in Chemistry, 22-24 April 2019, Athens, GREECE.
19. Erol Akpinar, Nazli Uygur. “Director Distortion by Colloids in Lyotropic Discotic and Calamitic Nematic Phases”, 1st International Balkan Chemistry Congress, 17-20 September 2018, Edirne, TURKEY.
20. Erol Akpinar, Emre Guner, Esra Sahin. “Lyotropic Liquid Crystal Structures of Some Tetradecylalkylammonium Bromide Surfactants”,1st International Balkan Chemistry Congress, 17-20 September 2018, Edirne, TURKEY.
21. Erol Akpinar, Husna Capan. “Effect of Dopant Structure on Birefringences and Symmetric Tensor Invariants of Lyotropic Nematic Phases”,1st International Balkan Chemistry Congress, 17-20 September 2018, Edirne, TURKEY.
22. Erol Akpinar, Esra Sahin. “Determination of micellization parameters of some ionic surfactants from electrical conductivity measurements”, International Eurasian Conference on Biological and Chemical Sciences, 26-27 April 2018, Ankara, TURKEY.
23. Erol Akpinar, Esra Sahin. “Effect of didodecyldimethylammoniumbromide as a cosurfactant on nematic phase behavior of lyotropic mixture KL/DeOH/water”, International Eurasian Conference on Biological and Chemical Sciences, 26-27 April 2018, Ankara, TURKEY.
24. Seda Uyanik, Erol Akpinar. “Effect of surfactant alkyl chain length on the formation of uniaxial and biaxial cholesteric phases in potassium alkanoates/Rb2SO4/DeOH/H2O/brucine lyotropic mixtures”, International Eurasian Conference on Biological and Chemical Sciences, 26-27 April 2018, Ankara, TURKEY.
25. Erol Akpinar, Nazli Uygur. “Investigation of nematic-nematic phase transitions in transition metal salts doped lyotropic liquid crystal mixtures”,International Eurasian Conference on Biological and Chemical Sciences, 26-27 April 2018, Ankara, TURKEY.
26. Erol Akpinar, Sinan Yurdakul, Nazli Uygur. “Comparison of micellization of partly fluorinated surfactants with their hydrogenated counterparts”,International Eurasian Conference on Biological and Chemical Sciences, 26-27 April 2018, Ankara, TURKEY.
27. Sinan Yurdakul, Erol Akpinar, Seda Uyanik. “Lyotropic cholesteric phase behaviors of partly fluorinated surfactants and their hydrogenated counterparts”,International Eurasian Conference on Biological and Chemical Sciences, 26-27 April 2018, Ankara, TURKEY.
28. A. G. Oliveira, Erol Akpinar, D. Reis, A. M. F. Neto. “A survey on the phase diagram of the system sodium dodecylsulfate/1-decanol/D2O concerning an eventual coexistence of nematic uniaxial phases”, Optics of Liquid Crystals, 24-29 September 2017, Guaruja, BRAZIL.
29. Erol Akpinar, D. Reis, A. M. F. Neto. “Stabilization of the biaxial nematic phase in lyotropic liquid crystals”,Optics of Liquid Crystals, 24-29 September 2017, Guaruja, BRAZIL.
30. Erol Akpinar, Cihan Canioz, Meric Turkmen, D. Reis, A. M. F. Neto. “Effect of the surfactant alkyl chain length on the stabilization of lyotropic nematic phases”, International Conference on Advances in Science and Arts”, 29-31 March 2017, Istanbul, TURKEY.
31. Erol Akpinar, Meric Turkmen,CihanCanioz, A. M. F. Neto. “Effect of interactions between ionic species at micelle surfaces on the formation of lyotropic nematic phases”,International Conference on Advances in Science and Arts”, 29-31 March 2017, Istanbul, TURKEY.
32. Erol Akpinar, Kemal Otluoglu, Meric Turkmen, CihanCanioz, D. Reis, A. M. F. Neto. “Effect of dopant localization at micelle surfaces on the formation of lyotropic nematic phases”,International Conference on Advances in Science and Arts”, 29-31 March 2017, Istanbul, TURKEY.
33. Erol Akpinar, Kemal Otluoglu, Meric Turkmen, CihanCanioz, A. M. F. Neto. “Effect of the presence of strong and weak electrolytes on the existence of the uniaxial and biaxial nematic phases in lyotropic mixtures”, 26th International Liquid Crystal Conference, 31 July-5 August 2016, Kent, OH, USA.
34. A. M. F. Neto, Erol Akpinar, D. Reis. “Crossover positive biaxial nematic to negative biaxial nematic phase in lyotropic liquid crystals”, Emerging Liquid Crystal Technologies XI, 16 February 2016, San Francisco, California, USA.
35. Erol Akpinar, D. Reis, A. M. F. Neto. “Crossover between optically positive and negative biaxial nematic phase in lyotropic liquid crystals”, 16th Topical Meeting on the Optics of Liquid Crystals, 13-18 September 2015, Sopot, POLAND.
36. A. M. F. Neto, Erol Akpinar, Kemal Otluoglu, Meric Turkmen, Cihan Canioz. “Effect of the presence of strong and weak electrolytes on the existence of the uniaxial and biaxial nematic phases in lyotropic mixtures”, International Conference on Applied Chemistry, 17-18 October 2016, Houston, USA.
37. Erol Akpinar. “Effect of kosmotrope and chaotrope interactions at the micelle surfaces on the formation of lyotropic biaxial nematic phases: Intrinsically Biaxial Micelle Model”, Energy Materials Nanotechnology Meeting, 8-11 June 2015, Cancun, MEXICO.
38. Erol Akpinar, D. Reis, A. M. F. Neto. “Anomalous behavior in the crossover between the negative and positive biaxial nematic mesophases in a lyotropic liquid crystal”, 25th International Liquid Crystal Conference, 29 June-4 July 2014, Dublin, IRELAND.
39. D. Reis, Erol Akpinar, A. M. F. Neto. “Effect of alkyl chain length of alcohols on cholesteric uniaxial to cholesteric biaxial phase transitions: Evidence of a first-order phase transition”,25th International Liquid Crystal Conference, 29 June-4 July 2014, Dublin, IRELAND.
40. Erol Akpinar. “Recent studies on lyotropic biaxial nematic and cholesteric phases: Intrinsically Biaxial Micelles Model”, 37th National Meeting on Condensed Matter Physics, 12-16 May 2014, Saupie, Bahia, BRAZIL.
41. D. Reis, Erol Akpinar, A. M. F. Neto. “Effect of alkyl chain length of alcohols on the cholesteric phase transitions in lyotropic liquid crystals”, 2nd Italian-Brazilian Workshop on Liquid Crystals, 14-18 October 2013, Maceio, BRAZIL.
42. C. S. Risi, A. M. F. Neto, Erol Akpinar, M. B. L. Santos. “Dynamic light scattering and viscosity measurements in a ternary and quaternary discotic lyotropic nematic liquid crystal: tuning the backflow with salt”, 2nd Italian-Brazilian Workshop on Liquid Crystals, 14-18 October 2013, Maceio, BRAZIL.
43. A. M. F. Neto, Erol Akpinar, D. Reis. “New lyotropic nematic and cholesteric biaxial mesophases”,2nd Italian-Brazilian Workshop on Liquid Crystals, 14-18 October 2013, Maceio, BRAZIL.
44. D. Reis, Erol Akpinar, A. M. F. Neto. “Cholesterization of uniaxial and biaxial nematic lyotropic phases”, 15th Topical Meeting on the Optics of Liquid Crystals, 29 September-4 October 2013, Honolulu, Hawai, USA.
45. Erol Akpinar, F. Giesselmann, M. Yildirim, M. Acimis. “Investigation of the effects of intermicellar distance and screw angle on the temperature dependence of the helical pitches in the intrinsic lyotropic chiral nematic phases”, 44th World Chemistry Congress, 11-16 August 2013, Istanbul, TURKEY.
46. A. M. F. Neto, Erol Akpinar, D. Reis. “New lyotropic mixtures presenting the biaxial nematic liquid crystalline phase”,Emerging Liquid Crystal Technologies VIII,2-7 February 2013, San Francisco, California, USA.
47. Erol Akpinar, D. Reis, A. M. F. Neto. “Investigation of the effect of different long-chain alcohols on the nematic uniaxial-to-biaxial phase transitions of anew mixture of potassium laurate/1-alcohol/K2SO4/water via laser conoscopy”, 24th International Liquid Crystal Conference, 19-24 August 2012, Mainz, GERMANY.
48. Erol Akpinar, M. Acimis, F. Giesselmann. “A study on some lyotropic racemic nematic and intrinsically chiral nematic phases by laser diffraction, small-angle x-ray scattering and viscosity measurements”,23rd International Liquid Crystal Conference, 11-16July 2010, Krakow, POLAND.
49. E. B. Olutas, Erol Akpinar, M. Acimis. “Determination of micellar properties of enantiomeric/racemic dodecylesters and dodecylamides of alanine in aqueous medium”, 23rd Conference of the European Colloid and Interface Society, 6-11 September 2009, Antalya, TURKEY.