Selected publications:

Full record of publications by years can be found in the ISSP Annual Research Reports

C. Minetti, V. Vitkova, I. Bivas, F. Dubois, Digital holographic miscroscopy as a tool to study the thermal shape fluctuations of lipid vesicles, Optics Letters 41(8): 1833 (2016)

R. Georgieva, K. Mircheva, V.Vitkova, K. Balashev, Tz. Ivanova, C. Tessier, K. Koumanov, P. Nuss, A. Momchilova, G. Staneva, Phospholipase A2 induced remodeling processes on liquid-ordered / liquid-disordered membranes containing docosahexaenoic or oleic acid: a comparison study, Langmuir 32, 1756−1770 (2016)

K. Antonova, V. Vitkova, C. Meyer, Membrane tubulation from giant lipid vesicles in alternating electric fields, Phys. Rev. E 93, 012413 (2016)

V. Vitkova, D. Mitkova, G. Staneva, Lyso- and omega-3-containing phosphatidylcholines alter the bending elasticity of lipid membranes, Colloids and Surfaces A: Physicochem. Eng. Aspects 460, pp. 191–195 (2014)

D. Mitkova, N. Marukovich, Y. A. Ermakov, V. Vitkova, Bending rigidity of phosphatidylserine-containing lipid bilayers in acidic aqueous solutions, Colloids and Surfaces A: Physicochem. Eng. Aspects 460, pp. 71–78 (2014)

J. Genova, V. Vitkova, I. Bivas, Registration and analysis of the shape fluctuations of nearly spherical lipid vesicles, Phys. Rev. E  88, 022707 (2013)

D. Mitkova, A. Stoyanova-Ivanova, St. Georgieva, P. Todorov, N. Kozarev, Yu. A. Ermakov, and V. Vitkova, Charged lipid bilayers in aqueous surroundings with low pH, in Edited by Aleš Iglič and Chandrashekhar V. Kulkarni editors: Advances in Planar Lipid Bilayers and Liposomes vol. 18, 2013, pp. 1-20

J. I. Pavlič, J. Genova, G. Popkirov, V. Kralj-Iglič, А. Iglič, M. D. Mitov, “Mechanoformation of neutral (SOPC) giant phospholipid vesicles in high ionic strength solution (PBS)”, Chem. Phys. Lipids 164 (2011) 727-731

V. Vitkova, C. Misbah, Dynamics of lipid vesicles – from thermal fluctuations to rheology, Advances in Planar Lipid Bilayers and Liposomes vol.14 (Ed. Ales Iglic), Elsevier, Amsterdam (2011) pp. 257 – 292

I. Bivas, Shape fluctuations of nearly spherical lipid vesicle and emulsion droplet, Phys. Rev. E, 81, 061911 (2010)

H. P. Hinov: “On the coexistence of the flexo-dielectric walls – flexoelectric domains for the nematic MBBA – A new estimation of the modulus of the difference between the flexoelectric coefficients of splay and bend Se1z – e3xS”, Mol. Cryst. Liq. Cryst. 524, pp 26-35 (2010)

K. Antonova, V.Vitkova, M. D. Mitov, “Deformation of giant vesicles in AC electric fields – dependence of the prolate-to-oblate transition frequency on vesicle radius”, Europhys. Lett. (EPL) 89: 38004 (2010)

I. Bivas and Yu. A. Ermakov, Elasticity and Electrostatics of Amphiphilic Layers, in "Advances in Planar Lipid Bilayers and Liposomes", edited by A. Leitmannova Liu, Elsevier, Amsterdam, 2007, Volume 5, Chapter 11, pp. 313-343 (invited)

V. Vitkova, M.-A. Mader, B. Polack, C. Misbah and T. Podgorski, “Micro-macro link in rheology of erythrocyte and vesicle suspensions”, Biophys. J. 95 (7) L33-L35 (2008)

J. Genova, A. Zheliaskova, M. D. Mitov, “Monosaccharides (fructose, glucose) and disaccharides (sucrose, trehalose) influence the elasticity of SOPC membranes”, J. Optoel. Adv. Mater. 9 (2) pp. 431-434 (2007)

V. Vitkova, V. Doltchinkova, M. D. Mitov and I. Bivas, “Membrane bending elasticity of human erythrocyte ghosts”, J. Optoel. Adv. Mater. 9 (2) pp. 431-434 (2007)

Y.Marinov, H.P.Hinov, and A.G.Petrov, “On a simple way for obtaining important material constants of a nematic liquid crystal: longitudinal flexoelectrin domains under the jointaction of dc and ac voltages”, Mol. Cryst. Liq. Cryst. 449, 33 (2006)

I. Bivas, Electrostatic and mechanical properties of a flat lipid bilayer containing ionic lipids, Colloids and Surfaces A: Physicochem. and Engineering Aspects, v. 282-283, pp. 423-434 (2006)

V. Vitkova, P. Meleard, T. Pott and I. Bivas, “Alamethicin influence on the membrane bending elasticity”, Eur. Biophys. J. 35, pp. 281-286 (2006)

V. Vitkova, J. Genova, M.D. Mitov, and I. Bivas, “Sugars in the aqueous phase change the mechanical properties of lipid mono- and bilayers”, Mol. Cryst. Liq. Cryst. 449, pp. 95–106 (2006)

V. Vitkova, M. Mader et T. Podgorski, „Micro-écoulements de vésicules : déformation et mobilité”, La Houille Blanche, N°2-2006, pp.65-70 (2006)

M.Mader, V. Vitkova, M. Abkarian, A. Viallat and T. Podgorski, “Dynamics of viscous vesicles in shear flow”, Eur. Phys. J. E 19, pp.389-397 (2006)

J. Genova, A. Zheliaskova, M. D. Mitov, “The influence of sucrose on the elasticity of SOPC lipid membrane studied by the analysis of thermally induced shape fluctuations”, Colloids and Surfaces A: Physicochemical and Engineering Aspects, v. 282-283, pp. 420-422 (2006)

Y. Marinov, H. P. Hinov, and A. G. Petrov “Longitudinal flexoelectric domains in BMAOB nematic layers under the joint action of dc and ac voltages” J. Optoelectr. Adv. Mat. 7, 277 (2005)

J. Genova, V. Vitkova, L. Aladgem, M. D. Mitov, “The stroboscopic illumination gives new opportunities and improves the precision of the bending elastic modulus measurement”, J. Optoel. Adv. Mater. 7 (1), pp. 257-260 (2005)

V. Vitkova, M. Mader, T. Biben, and T. Podgorski, “Tumbling of Deformable Lipid Vesicles, Enclosing a Viscous Fluid under a Shear Flow”, J. Optoel. Adv. Mater. 7 (1), pp. 261-264 (2005)

I. Bivas and C. Danelon, "Fields and forces acting on a planar membrane with a conducting channel", Phys. Rev. E, 69, 041901 (2004)

H. P. Hinov, “On the gradient flexoelectric effect in nematic thirty years later”, Bulg. J. Phys. 31, 55 (2004)

V. Vitkova, J. Genova, O. Finogenova, Y. Ermakov, M.D. Mitov, and I. Bivas, “Surface Charge Effect on the Lipid Bilayer Elasticity”, C. R. Acad. Bulg. Sci. 57 (11) (2004)

S. Tscholakova, N. Denkov, I. B. Ivanov and R. Marinov “Evaluation of short-term and long-term stability of emulsions by centrifugation and NMR”, Bulg. J. Phys. 31, 147 (2004)

K. Kolentsov, L. Yorukova, A. Zheliaskova, and A. Rachkova, “Some properties of doped SnO2 thin films used in EL and LC display structures “ Bulg. J. Phys. 31, 126 (2004)

L. Yorukova, K. Kolentsov, and A. Zheliaskova, “Colour characteristics of AC HEL structures with various protective layer" Bulg. J. Phys. 31, 139 (2004)

V. Vitkova, M. Mader, and T. Podgorski, “Deformation of vesicles flowing through a capillary”, Europhys. Lett. 68 (3), pp. 398-404 (2004)

V. Vitkova, J. Genova and I. Bivas, “Permeability and Hidden Area of Lipid Bilayers”, Eur. Biophys. J. 33 (8) pp 706-714 (2004)

V. Vitkova, J. Genova, M.D. Mitov, and I. Bivas, “Mechanical Properties of Lipid Mono- and Bilayers in the Presence of Small Carbohydrates in the Aqueous Phase”, C. R. Acad. Bulg. Sci. 57 (6) (2004)

V. Vitkova, J. Genova and P. Méléard, “Influence of alamethicin on the passive water permeability of model lipid membranes and on the morphology of giant lipid vesicles”, J. Mater. Sci.: Mater. El. 14 (10-12) pp 819-820 (2003)

I. Bivas, P. Meleard, "Bending Elasticity and Bending Fluctuations of Lipid Bilayers Containing an Additive", Phys. Rev. E  67, 012901 (2003)

V. Vitkova, J. Genova and I. Bivas, “Experimental and Theoretical Study of Lipid Bilayers Permeability and Hidden Area”, C. R. Acad. Bulg. Sci. 55 (10) pp 15-20 (2002)

I. Bivas, "Elasticity and shape equation of a liquid membrane", Eur. Phys. J. B 29, 317 (2002)

St. Panayotova, R. Marinov and A. Derzhanski, “The phase behavior of the system Triton X-114 – water and the hydrophile - lipophile balance theory”, Compt. rend. Acad. Bulg. Sci., 54, (2000)

I. Bivas, V. Vitkova, M. D. Mitov, M. Winterhalter, R. Alargova, P. Méléard, P. Bothorel, "Mechanical Properties of Lipid Bilayers, Containing Grafted Lipids", Perspectives in Supramolecular Chemistry, vol. 6, Giant Vesicles, Ed. P. L. Luisi and P. Walde, (John Willey & Sons Ltd., 2000) Chapter 14, pp 207 - 219

I. Bivas,"Free energy of a fluctuating vesicle. Influence of the fluctuations on the Laplace law", in Perspectives in Supramolecular Chemistry, vol. 6, Giant Vesicles, Ed. P. L. Luisi and P. Walde, (John Willey & Sons Ltd., 2000), P. Walde and P. L. Luisi eds., (John Wiley & Sons Ltd.2000) 95

I. Bivas, P. Meleard, I. Mitcheva, P. Bothorel, "Thermal shape fluctuations of a quasi spherical lipid vesicle when the mutual displacements of its monolayers are taken into account", Colloids and Surfaces A: Physicochem. and Engineering Aspects, 157, 33 (1999)

I. Bivas, M. Winterhalter, P. Meleard, P. Bothorel, Europhys. Lett. 41, 261(1998)

I. Bivas, M. Winterhalter, P. Meleard, P. Bothorel, "Elasticity of bilayers containing PEG lipids", Europhys. Lett., 41, 261 (1998)

P. Meleard, C. Gerbeaud, T. Pott, L. Fernandez-Puente, I. Bivas, M. D. Mitov, and J. Dufourcq, "Bending elasticities of modified membranes: Influences of temperature and sterol content", Biophys. J., 72, 2616 (1997)

R. Marinov, E. J. Dufourc, “Thermotropism and hydration properties of POPE and POPE-cholesterol systems as revealed by solid state 2H and 31P NMR”, Eur. Biophys. J., 24, 423 (1996)
R. Marinov, E. J. Dufourc, Cholesterol stabilizes the hexagonal type II phase of 1-palmitoyl-2-oleoyl-sn glycero-3-phosphethanolamine. A solid state 2H and 31P NMR study., J. Chim. Phys. (France), 92,1727 (1995)

L. Fernandez-Puente, I. Bivas, M. D. Mitov and P. Meleard, "Temperature and Chain Length Effects on Bending Elasticity of Phosphatidylcholine Bilayers", Europhys. Lett., 28, 181 (1994)

I. Bivas, L. Bivolarski, M. D. Mitov and A. Derzhanski, "Correlations between the form fluctuation modes of flaccid quasispherical lipid vesicles and their role in the calculation of the curvature elastic modulus of the vesicle membrane. Numerical results", J. Phys. II France, 2, 1423 (1992)

I. Bivas, "Molecular Theory of the Lifetime of Black Lipid Membranes", J. Colloid and Interface Sci., 144, 63 (1991)

J.-F. Faucon, M. D. Mitov, P. Meleard, I. Bivas, P. Bothorel, "Bending Elasticity and Thermal Fluctuations of Lipid Membranes. Theoretical and Experimental Requirements.", J. Physique, 50, 2389 (1989)

I. Bivas, P. Hanusse, P. Bothorel, J. Lalanne, O. Aguerre-Chariol, "An Application of the Optical Microscopy to the Determination of the Curvature Elastic Modulus of Biological and Model Membranes", J. Physique 48, 855 (1987)

A. G. Petrov and I. Bivas, "Elastic and Flexoelectric Aspects of Out-of-Plane Fluctuations in Biological and Model Membranes", Progr. Surf. Sci., 16(4), 389 (1984)

I. Bivas and A. Derzhanski, "Statistical Mechanical Theory for Hydrophobic Core of Lipid Bilayer", Mol. Cryst. Liquid Crystals,74, 1771 (1981)

I. Bivas and A. G. Petrov, "Flexoelectric and Steric Interactions between Two Bilayer Lipid Membranes
Resulting from their Curvature Fluctuations", J. Theor. Biol., 88, 459 (1980)

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