Yu.A.Nastishin,PhD,
Institute of Physical Optics

Yu.A.Nastishin

.

Scientific interests Defects in liquid crystals.  Experimental study of TGBA phase. Optical characterization of distorted liquid crystals. Optical measurements of nematic polar anchoring. Rheological properties of chiral LC. Phase diagrams and physical properties of lyotropic LC. Computer simulation of optical conoscopy for distorted LC and gyrotropic birefringent solid crystals.

Selected Journal Articles :

4. O.D.Lavrentovich and Yu.A.Nastishin, Quasicrystalline intermediate structure between cholesteric and smectic A phases.- Ukrainian Fiz. Zhurn., v.35, p.221-223 (1990), in Russian 

5. Vlokh O.G., Nastishin Yu.A, Polovinko I.I., Sveleba S.A., The manifestation of the incommensuration in optical properties of blue liquid crystal phases.- Pis'ma Zhurn Techn. Fiz., v.16, 17, p.22-33 (1990), in Russian 

6. O.D.Lavrentovich, Yu.A.Nastishin, Defects in degenerate hybrid aligned nematic liquid crystals.- Europhys.Lett., v.13, p.135-141 (1990) 

7. O.D.Lavrentovich, Yu.A.Nastishin, V.I.Kulishov, Yu.S.Narkevich, A.S.Tolochko, S.V.Shianovskii, Helical smectic A.- Europhys.Lett., v.13, p.313-318 (1990) 

8. Vlokh O.G., Yu.Nastishin, T.M.Sosnowskii, New features of physical properties of blue liquid crystal phases.- Pis'ma Zhurn. Techn. Fiz., v.18, 9, p. 43-48 (1992), in Russian 

9. O.D.Lavrentovich and Yu.A.Nastishin, Optical Bragg diffraction of the helical smectic A liquid crystal.- Mol.Cryst.Liq.Cryst., v.221, p.57-60 (1992) 

10.O.G.Vlokh, Yu.A.Nastishin and T.M.Sosnowskii, Effect of defects on the physical properties of the blue phase of liquid crystals.- Sov.Phys.- Crystallogr. Rep., v.36, 6,, p.860-861 (1993) 

11.Yu.A.Nastishin, E.Lambert, Ph.Boltenhagen. Temperature-induced structural transitions of the quasiternary system cetylpyridinium chloride-hexanol-brine. C.R.Acad.Sci.Paris, t.321, Serie IIb, p.205-210 (1995) 

12.Yu.A.Nastishin. Brine-rich corner of the phase diagram of the ternary system cetylpyridinium cloride-hexanol-brine. Langmuir, 12, 21, p. 5011-5015 (1996) 

13.Yu.A.Nastishin. Temperature investigations of the system cetylpyridinium chlorid-hexanol-brine. Ukrainian Fiz. Zhurn., 41, 2, p.185-189 (1996), in Ukrainian 

14.Gotra Z.Yu., Nastishin Yu.A., Smalyukh I.I., Senyuk B.I. Visnyk (Lviv State University "Lviv Politekhnik", Serie "Automation, Measurement, Operation", 305, p.91-98 (1996), in Ukrainian

15.Yu.A.Nastishin. Pretransitional electroconductivity of the L alppha phase. Ukrainian Fiz. Zhurn., 42,1, pp.168-172 (1997), in Ukrainian 

16.Yu.A.Nastishin, O.B.Dovgyi.Surface induced L alpha layer in the sponge phase of the lyotropic system. Ukrainian Fiz. Zhurn, 42, 4, pp.430-432 (1997), in Ukrainian 

17. Yu.A.Nastishin. The exchange of the cosurfactant  between surfactant aggregates and solvent in the lyotropic system. //Abstracts of the European Conference on liquit Crystals, Koscelisko Centre, Zakopane, Poland March 3-8, 1997, p.349. 

18. Yu.A.Nastishin. Pretransitional phenomena in the lamellar L? phase. //Abstracts of the European Liquid Crystals Conference, Koscelisko Centre, Zakopane, Poland March 3-8, 1997, p.350. 

19. Yu.A.Nastishin, O.Dovgyi. Correlation between surface and bulk orientation of the L? phase observed with the thickness dependence of the electroconductivity. //Abstracts of the European Liquid Crystals Conference on, Koscelisko Centre, Zakopane, Poland March 3-8, 1997, p. 351. 

20. Yu.A.Nastishin, O.Dovgyi. Thickness dependence of the electroconductivity in the lyotropic L3 (sponge) phase. //Abstracts of the European Liquid Crystals Conference, Koscelisko Centre, Zakopane, Poland March 3-8, 1997, p.352. 

21. Yu. A. Nastishin, I. I. Smalyukh. Pretransitional optical activity in the isotropic phase of cholesteric liquid crystal.//Abstracts of the European Liquid Crystals Conference, Koscelisko Centre, Zakopane, Poland March 3-8, 1997, p.226. 

22. Z. Yu. Gotra, Yu. A. Nastishin, I. I. Smalyukh, T. M. Sosnovskyi. Optical rotation in the supercooled blue phase.//Abstracts of the European Liquid Crystals Conference , Koscelisko Centre, Zakopane, Poland March 3-8, 1997, p.293. 

23. Z.Yu.Gotra, Yu.Nastishin, I.Smalyukh, B.Senyuk. Simulation of the anomalous light polarization rotation in the pretransitional isotropic phase region of the cholesteric liquid crystal. Materials of 1-st International modelling school- Crimea Autumn' 96, Alushta (Ukraine), September 12-17, pp. 101-103 (1996). 

24.Yu. A. Nastishin, I. I. Smalyukh, Surface influence on the properties of the isotropic phase of a chiral liquid crystal, SPIE Proceedings, Vol. 3488, 142-149 (1997). 

25.Yu. A. Nastishin, I. I. Smalyukh, Z. Yu. Gotra, Observation of magneto-optical effect in the supercooled blue phase. SPIE Proceedings, Vol.3488, 149-157(1997). 

26.Yu. A. Nastishin, O. B. Dovgyi, A. Kostruba, The studies of the interface between the L3 (sponge) phase and a solid substrate, SPIE Proceedings, Vol. 3488, 20-28 (1997) 

27. V.G.Nazarenko, A.K.St.Clair, Klouda, R.D.Polak, Yu. A Nastishin, O.D.Lavrentovich, Chemically imidized polyimide as an alignment material for LCDs. SID 98 DIGEST, 11.3, pp. 135-138. 

28. Yu.A.Nastishin, T.Shneider, O.D.Lavrentovich, Developable domains as nuclei of columnar lyotropic mesophases. Book of abstracts. Site visit for the NSF & ALCOM. Liquid Crystal Institute, Kent, OH, June 25-27, 1997, p.12 

29. Yu.A. Nastishin, I.I.Smalyukh. Pretransitional rotation of the light polarization plane in the isotropic phase of cholesteric liquid crystal. Optics and Spectroscopy v.85, No3, pp. 465-468 translated from  Optics and Spectroscopy, v.85, No3, pp507-511, (1998). 

30. Yu. A. Nastishin, I.I.Smalyukh. Influence of the magnetic field on the rotation of light polarisation plane in the cholesteric liquid crystal. Journal of Physical Studies, v.2, No 3 (1998) pp.335-338. 

31.Yu.A.Nastishin, O.B.Dovgyi. Thickness dependence of electroconductivity for lyotropic L alpha phase. Ukrainian Fiz. Zhurn, 43, 2, pp.233-237 (1998), in Ukrainian. 

32.D.Shenoy, K.Gruenberg, J.Naciri , R. Shashidhar, Yu.Nastishin, R.Polak and O.D.Lavrentovich. Device Properties and Polar Anchoring of Nematic molecules at photodimerized Surfaces. SPIE Preceedings, v.3635, p. 24-30 

33. Yu.A.Nastishin, R.D.Polak, S.V. Shiyanovskii and O.D.Lavrentovich. Determination of nematic polar anchoring from retardation versus voltage measurements. Appl.Phys.Lett., v.75, No 2, pp.202-204. 

34. Yu.A.Nastishin, R.D.Polak, S.V. Shiyanovskii, V.H.Bodnar and O.D.Lavrentovich. Nematic polar anchoring strength measured by electric field techniques. J.Appl.Phys., v.86, No 8, pp.4199-4213. 

35. I.I.Smalyukh, Yu.A.Nastishin. Optical polarization investigations of cholesteric blue phases. Ukrainian Fiz. Journal, v.45, No 8, pp.941-947 (2000)
36. Yu.A.Nastishin, O.B.Dovgyi, A.M.Kostruba. Optical study of the interface between the thermotropic L3 (sponge) phase and solid substrate. Ukrainian Journal of Physical Optics, 1, No2, pp. 96-102 (2000) 

37. Yu.A.Nastishin, M.Kleman, J.Malthete, T.N.Nguyen. Identification of a TGB A phase via its defects, Eur.Phys.J E., 5, 353-357 (2001) 

38. Yu.A.Nastishin, O.B.Dovgyi. Optical conoscopy of distorted uniaxial liquid crystals., Ukrainian Journal of Physical Optics, 2, N2, 98-106 (2001). 

39. Yu.A.Nastishin, O.G.Vlokh, O.B.Dovgyi, Computer simulation of conoscopic patterns for gyrotropic birefringent crystals. Ukrainian Journal of Physical Optics, 2, N3, 133-140 (2001).

40. Yu.A.Nastishin, M.Kleman, O.B.Dovgyi. Textural and conoscopic studies of chiral liquid crystals possessing cholesteric √ smectic A or cholesteric √ TGBA √smectic A phase transitions. Ukrainian Journal of Physical Optics. Vol.3.  ╧1. pp. 1 √ 11(2002).

41. Nastishin Yu.A., Achard M.F., Nguyen H.T., Kleman M. Textural analysis of a mesophase with banana shaped molecules // Eur.Phys. J. E. √ 2003. √ 12. - P.581-591.

42. Asnacios S., Meyer C., Nastishin Yu. A., Kleman M. and Malthete J. Rheological properties of chiral liquid crystals possessing a cholesteric-smectic A transition // Liquid Crystals. √ 2004. - 31, 4. -  P.593-599.

43. Pishnyak O.P., Nastishin Yu.A. and Lavrentovich O.D., Comment on "Self-organized periodic photonic structure in a nonchiral liquid crystal" // Phys. Rev. Lett. √ 2004. √ 93, 10. - P.109401-1.

44. Kleman M., Lavrentovich O.D. and Nastishin Yu.A. Dislocation and disclination in mesomorphic phases. In Dislocations in Solids. v.12. Ed. by F.R.N. Nabarro and J.P. Hirth. √Elsevier, 2004. - P. 147-271.

45. O.P.Pishnyak, Yu.A. Nastishin, O.B.Dovgyi, S.V.Shiyanovskii and O.D.Lavrentovich. Conoscopic Magnetic Null to measure the pretilt angle // Great Lakes Photonics Symposium, Cleveland, Ohio, USA, 7-11 June, 2004. - Programme and Book of Presentations (on CD).

46. Nastishin Yu.A., Liu H., Shiyanovskii S.V., Lavrentovich O.D. and Kostko A., Anisimov M. Pretransitional fluctuations in the isotropic phase of a lyotropic chromonic liquid crystal // Phys.Rev.E. √ 2004. - 70. - P.051706:1-9.

47. Pansu B., Nastishin Y., Imperor-Clerc M., Veber M., Nguyen H. T. New Investigations on the tetragonal liquid crystalline phase or SmQ // Eur.Phys.J.E. √ 2004. - 15. -  P.225-230 .

48. Achard M.-F., Kleman M., Nastishin Yu.A., Nguyen H.-T. Liquid crystall helical ribbons as isometric textures // Eur. Phys. J.E. √ 2005. √ 16. √ P.37-47.

49.  M. Kleman, C.Meyer, Yu.A. Nastishin . Imperfections in Focal Conic Domains: The Role of Dislocations // ArXiv:cond-mat/0507024, v1, 1Jul 2005.

50. C.Meyer, Yu.A. Nastishin, M. Kleman. Transformations des domaines a coniques focales au voisinage de la transition Smectique A-Nematique // 12eme Colloque Francophone sur Cristaux Liquides,  13-16 Septembre, 2005. √ Montpellier. France. Abstracts. √ P.9 (O3).

51. O.Pishnyak, Yu. Nastishin, and O. D. Lavrentovich. Applications of SmA liquid crystals for light deflection. // Great Lakes Photonics Symposium, Cleveland, Ohio, USA, 7-11 June, 2004; Liquid Crystals in Optics & Photonics conference, Fall 2005 Meetting of the Great Lakes SPIE Regional Chapter, October 27-28, 2005. - Kent, Ohio, USA. Abstracts and Programme

52. Nastishin Yu. A., Liu H., Schneider T., Nazarenko V., Vasyuta R., Shiyanovskii S.V. and Lavrentovich O.D. Optical characterization of the nematic lyotropic chromonic liquid crystals: light absorption, birefringence, and scalar order parameter // Phys.Rev. E. √ 2005. √ 72, N4. √ P.041711:1-14

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