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Timestamp: 2019-04-21 18:40:40+00:00

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Department of Chemical Engineering - Prof. Nikolai D. Denkov, Ph.D., D.Sc.
Prof. Nikolai D. Denkov, Ph.D., D.Sc.
4. Emergence of polygonal shapes in oil droplets and living cells: the potential role of tensegrity in the origin of life. R. Gordon, M. M. Hanczyc, N. D. Denkov, M. A. Tiffany, S. K. Smoukov, in Habitability of the Universe Before Earth, R. Gordon & A. Sharov eds., Academic Press, 2018, pp. 427-490.
8. Particle Detachment from Fluid Interfaces: Theory vs. Experiments. S.E. Anachkov, I. Lesov, M. Zanini, P.A. Kralchevsky, N.D. Denkov, L. Isa. Soft Matter 12 (2016) 7632–7643; doi: 10.1039/C6SM01716A.
8. In vitro study of triglyceride lipolysis and phase distribution of the reaction products and cholesterol: effects of calcium and bicarbonate. Z. Vinarov, L. Petrova, S. Tcholakova, N. Denkov, S. Stoyanov, A. Lips, Food & Function 3 (2012) 1206-1220.
1. Collection of Papers from the 8th EUFOAM Conference and the Meetings of COST Actions D43 and P21, Borovets, Bulgaria, 13-16 July 2010. N.D. Denkov, P.A. Kralchevsky, Colloids and Surfaces A, 382 (2011) 1-2.
2. Surface Rheology of Saponin Adsorption Layers. R. Stanimirova, K. Marinova, S. Tcholakova, N.D. Denkov, S. Stoyanov, E. Pelan, Langmuir 27 (2011) 12486-12498.
3. Efficient Emulsification of Viscous Oils at High Drop Volume Fraction. S. Tcholakova, I. Lesov, K. Golemanov, N. Denkov, S. Judat, R. Engel, T. Daner, Langmuir 27 (2011) 14783-14796.
4. Control of Ostwald Ripening by Using Surfactants with High Surface Modulus. S. Tcholakova, Z. Mitrinova, K. Golemanov, N. Denkov, M. Vethamuthu, K. P. Ananthapadmanabhan, Langmuir 27 (2011) 14807-14819.
1. Antibubble Lifetime: Influence of the Bulk Viscosity and of the Surface Modulus of the Mixture. S. Dorbolo, D. Terwagne, R. Delhalle, J. Dujardin, N. Huet, N. Vandewalle, N. Denkov, Colloids Surf. A 365 (2010) 43-45.
2. Emulsification and Emulsion Stability of Silica-charged Silicone Oils. S. Tcholakova, N. D. Denkov, D. Hristova, M. Deruelle, In The Proceedings of 5th World Congress on Emulsions, Lyon, France, 2010; Paper No. 4.1-50.
3. Drop Size in Concentrated Emulsions, Obtained by Rotor-Stator Homogenization. S. Tcholakova, I. Lesov, K. Golemanov, N. D. Denkov, S. Judat, In The Proceedings of 5th World Congress on Emulsions, Lyon, France, 2010; Paper No. 1.1-53.
4. Viscous Ffriction in Sheared Concentrated Emulsions and Foams. N. D. Denkov, S. Tcholakova, K. Golemanov, A. Lips, In The Proceedings of 5th World Congress on Emulsions, Lyon, France, 2010; Paper No. 1.3-69.
2. The Role of Surfactant Type and Bubble Surface Mobility in Foam Rheology. N. D. Denkov, S. Tcholakova, K. Golemanov, K. P. Ananthpadmanabhan, A. Lips, Soft Matter 5 (2009) 3389-3408.
3. Jamming in Sheared Foams and Emulsions, Explained by Critical Instability of the Films between Neighboring Bubbles and Drops. N. D. Denkov, S. Tcholakova, K. Golemanov, A. Lips, Phys. Rev. Lett. 103 (2009) 118302.
5. Instrument and Methods for Surface Dilatational Rheology Measurements. S. C. Russev, N. Alexandrov, K. G. Marinova, K. D. Danov, N. D. Denkov, L. Lyutov, V. Vulchev, and C. Bilke-Krause, Review of Scientific Instruments 79 (2008) 104102.
6. Chemical Physics of Colloid Systems and Interfaces. P. A. Kralchevsky, K. D. Danov and N. D. Denkov, Chapter 7 in Handbook of Surface and Colloid Chemistry (3rd Updated Edition; K. S. Birdi, Ed.). CRC Press, Boca Raton, FL, 2008.
7. Breakup of Bubbles and Drops in Steadily Sheared Foams and Concentrated Emulsions. K. Golemanov, S. Tcholakova, N. D. Denkov, K. P. Ananthapadmanabhan and A. Lips, Physical Review E 78 (2008) 051405.
8. Theoretical model of viscous friction inside steadily sheared foams and concentrated emulsions. N. D. Denkov, S. Tcholakova, K. Golemanov, T. Hu, and A. Lips, Amer. Inst. Physics Conference Proceedings, 2008, 1027, 902-904 .
3. Selection of Surfactants for Stable Paraffin-in-Water Dispersions, undergoing Solid-Liquid Transition of the Dispersed Particles. K. Golemanov, S. Tcholakova, N D. Denkov, and T. D. Gurkov, Langmuir 22 (2006) 3560-3569.
4. Ivan B. Ivanov: Remarkable Figure in Colloid Science. P. A. Kralchevsky, and N. D. Denkov, Colloids Surf. A, 282-283 (2006) 1-7.
5. Foam-Wall Friction: Effect of Air Volume Fraction for Tangentially Immobile Bubble Surface. N. D. Denkov, S. Tcholakova, K. Golemanov, V. Subramanian, and A. Lips, Colloids Surf. A, 282-283 (2006) 329-347.
6. Effect of Thermal Treatment, Ionic Strength, and pH on the Short-Term and Long-Term Coalescence Stability of Beta-Lactoglobulin Emulsions. S. Tcholakova, N.D. Denkov, D. Sidzhakova, B. Campbell, Langmuir 22 (2006) 6042-6052.
7. Numerical Simulation and Experimental Study of Emulsification in a Narrow-Gap Homogenizer. H. Steiner, R. Teppner, G. Brenn, N. Vankova, S. Tcholakova, N.D. Denkov, Chemical Engineering Science 61 (2006) 5841-5855.
8. Antifoam Effects of Solid Particles, Oil Drops and Oil-Solid Compounds in Aqueous Foams. N.D. Denkov, K.G. Marinova, Chapter 10 in the book "Colloidal Particles at Liquid Interfaces" (B.P. Binks & T.S. Horozov, Eds.), Cambridge University Press, Cambridge, UK, 2006; pp. 383-444.
9. Globular Proteins as Emulsion Stabilizers: Similarities and Differences with Surfactants and Solid Particles. N.D. Denkov, S. Tcholakova, I.B. Ivanov, In the Proceedings of the 4th World Congress on Emulsions, Lyon, France, 2006; Plenary Lecture.
10. Kinetics of Drop Breakup During Emulsification in Turbulent Flow. S. Tcholakova, N. Vankova, N.D. Denkov, I.B. Ivanov, T. Danner, In the Proceedings of the 4th World Congress on Emulsions, Lyon, France, 2006; Paper No. 2.2-304.
11. Dynamics of Adsorption from Micellar Surfactant Solutions at Expanding Fluid Interfaces in Relation to the Emulsification Process. K.D. Danov, P.A. Kralchevsky, N.D. Denkov, K.P. Ananthapadmanabhan, A. Lips, In the Proceedings of the 4th World Congress on Emulsions, Lyon, France, 2006; Paper No. 2.1-376.
12. Coalescence Stability of Emulsions Containing Globular Milk Proteins, S. Tcholakova, N.D. Denkov, I.B. Ivanov, B. Campbell, Advances in Colloid & Interface Science 123-126 (2006) 259-293.
1. Triblock Copolymers as Promoters of Solubilization of Oils in Aqueous Surfactant Solutions, P. A. Kralchevsky and N. D. Denkov, Chapter 15 in "Molecular Interfacial Phenomena of Polymers and Biopolymers" (Pu Chen, Editor), Woodhead Publishing, Cambridge, UK, 2005; pp. 538-579.
2. Effects of Electrolyte Concentration and pH on the Coalescence Stability of Beta-Lactoglobulin Emulsions: Experiment and Interpretation, S. Tcholakova, N. D. Denkov, D. Sidzhakova, I. B. Ivanov, B. Campbell, Langmuir 21 (2005) 4842-4855.
3. Role of Surfactant Type and Concentration for the Mean Drop Size during Emulsification in Turbulent Flow. S. Tcholakova, N. D. Denkov, and T. Danner, Langmuir 20 (2004) 7444-7458.
5. Evaluation of the Precision of Drop-Size Determination in Oil/Water Emulsions by Low-Resolution NMR Spectroscopy. P.S. Denkova, S. Tcholakova, N.D. Denkov, K. D. Danov, B. Campbell, C. Shawl, D. Kim, Langmuir 20 (2004) 11402-11413.
3. Application of the Model-Free Approach to Low Molecular Weight Systems with Hindered Internal Rotation: Cinnamoylmesitylene. P.S. Denkova, V.S. Dimitrov, S.M. Bakalova, J. Kaneti, K.D. Danov, Magnetic Resonance in Chemistry 41 (2003) 989-995.
2. Capillary Mechanisms in Membrane Emulsification: Oil-in-Water Emulsions Stabilized by Tween 20 and Milk Proteins. N. C. Christov, D. N. Ganchev, N. D. Vassileva, N. D. Denkov, K. D. Danov, and P. A. Kralchevsky, Colloids and Surfaces A 209 (2002) 83-104.
6. Optimal Hydrophobicity of Silica in Mixed Oil-Silica Antifoams. K.G. Marinova, N.D. Denkov, P. Branlard, Y. Giraud, M. Deruelle, Langmuir 18 (2002) 3399-3403.
7. Role of Oil Spreading for the Efficiency of Mixed Oil-Solid Antifoams. N.D. Denkov, S. Tcholakova, K.G. Marinova, A. Hadjiiski, Langmuir 18 (2002) 5810-5817.
8. Model Studies of the Effect of Silica Hydrophobicity on the Efficiency of Mixed Oil-Silica Antifoams. N.D. Denkov, K.G. Marinova, S. Tcholakova, M. Deruelle, Langmuir 18 (2002) 8761-8769.
9. Role of Entry Barriers in Foam Destruction by Oil Drops. A. Hadjiiski, N. D. Denkov, S. Tcholakova, I. B. Ivanov, In: "Adsorption and Aggregation of Surfactants in Solution", K. L. Mittal and D. O. Shah (Eds.), Marcel Dekker, New York, 2002, pp. 465-500.
10. Coalescence in Beta-Lactoglobulin-Stabilized Emulsions: Effects of Protein Adsorption and Drop Size. S. Tcholakova, N. D. Denkov, I. B. Ivanov, B. Campbell, Langmuir 18 (2002) 8960-8971.
11. Methods for Evaluation of Emulsion Stability at a Single Drop Level. N. D. Denkov, S. Tcholakova, I. B. Ivanov, B. Campbell, Proceedings of Third World Congress on Emulsions, September, 2002, Lyon, France.
12. Mechanism of Foam Destruction by Emulsions of PDMS-silica Mixtures. N. D. Denkov, K. Marinova, S. Tcholakova, M. Deruelle, Proceedings of Third World Congress on Emulsions, September, 2002, Lyon, France.
13. Coalescence in Protein Stabilized Emulsions. S. Tcholakova, N. D. Denkov, I. B. Ivanov, B. Campbell, Proceedings of Third World Congress on Emulsions, September, 2002, Lyon, France.
14. Chemical Physics of Colloid Systems and Interfaces: 1. Introduction; 2. Surface Tension of Surfactant Solutions; 3. Capillary Hydrostatics and Thermodynamics; 4. Surface Forces. P. A. Kralchevsky, K. D. Danov and N. D. Denkov, Chapter 5 in "Handbook of Surface and Colloid Chemistry", Second Edition (K. S. Birdi, Ed.), CRC Press, New York, 2002.
15. Chemical Physics of Colloid Systems and Interfaces: 5. Hydrodynamic Interactions in Dispersions; 6. Kinetics of Coagulation. P. A. Kralchevsky, K. D. Danov and N. D. Denkov, Chapter 5 in "Handbook of Surface and Colloid Chemistry", Second Edition (K. S. Birdi, Ed.), CRC Press, New York, 2002.
16. Chemical Physics of Colloid Systems and Interfaces: 7. Mechanisms of Antifoaming; 8. Electrokinetic Phenomena in Colloids; 9. Optical Properties of Dispersions and Micellar Solutions. P. A. Kralchevsky, K. D. Danov and N. D. Denkov, Chapter 5 in "Handbook of Surface and Colloid Chemistry", Second Edition (K. S. Birdi, Ed.), CRC Press, New York, 2002.
1. Capillary Forces and Structuring in Layers of Colloid Particles. P.A. Kralchevsky and N.D. Denkov, Current Opinion in Colloid & Interface Sci. 6 (2001) 383-401.
2. Particles with an Undulated Contact Line at a Fluid Interface: Interaction between Capillary Quadrupoles and Rheology of Particulate Monolayers. P. A. Kralchevsky, N. D. Denkov, and K. D. Danov, Langmuir 17 (2001) 7694-7705.
3. Foam Destruction by Solid-Liquid Antifoams in Solutions of a Nonionic Surfactant: Electrostatic Interactions and Dynamic Effects. K.G. Marinova, N.D. Denkov, Langmuir 17 (2001) 2426-2436.
4. Van der Waals Interaction between Two Truncated Spheres Covered by a Uniform Layer (Deformed Drops, Vesicles, or Bubbles). S. Tcholakova, N. D. Denkov, R. Borwankar, B. Campbell, Langmuir 17 (2001) 2357-2362.
5. Effect of Oily Additives on Foamability and Foam Stability. 2. Entry Barriers. A. Hadjiiski, S. Tcholakova, N. D. Denkov, P. Durbut, G. Broze, A. Mehreteab, Langmuir 17 (2001) 7011-7021.
6. Effect of Oily Additives on Foamability and Foam Stability. 1. Role of Interfacial Properties. L. Arnaudov, N. D. Denkov, I. Surcheva, P. Durbut, G. Broze, A. Mehreteab, Langmuir 17 (2001) 6999-7010.
7. Foam Boosting by Amphiphilic Molecules in the Presence of Silicone Oil. E. S. Basheva, S. Stoyanov, N. D. Denkov, K. Kasuga, N. Satoh, K. Tsujii, Langmuir 17 (2001) 969-979.
8. Role of Betaine as Foam Booster in the Presence of Silicone Oil Drops. E. S. Basheva, D. Ganchev, N. D. Denkov, K. Kasuga, N. Satoh, K. Tsujii, Langmuir, 16(3) (2000) 1000-1013.
9. Role of Surface Diffusion for the Drainage and Hydrodynamic Stability of Thin Liquid Films. S. D. Stoyanov, N. D. Denkov, Langmuir 17 (2001) 1150-1156.
10. Dynamics of Particles on Interfaces and in Thin Liquid Films. J. T. Petkov, N. D. Denkov, In "Encyclopedia of Surface and Colloid Science", A. Hubbard, Ed.; Marcel Dekker, New York, 2001.
1. Mechanisms of Action of Mixed Solid-Liquid Antifoams: 3. Exhaustion and Reactivation. N.D. Denkov, K.G. Marinova, C. Christova, A. Hadjiiski, Ph. Cooper, Langmuir 16 (2000) 2515-2528.
2. Antifoam Action of Oils. N.D. Denkov, K.G. Marinova, Proceedings of 3rd Eurofoam Conference, June, 2000, Delft, The Netherlands; Verlag MIT Publishing, Bremen, 2000, p. 199.
1. Mechanisms of Action of Mixed Solid-Liquid Antifoams. 1. Dynamics of Foam Film Rupture. N. D. Denkov, P. Cooper, J.-Y. Martin, Langmuir 15 (1999) 8514-8529.
2. Mechanisms of Action of Mixed Solid-Liquid Antifoams. 2. Stability of Oil Bridges in Foam Films. N. D. Denkov, Langmuir 15 (1999) 8530-8542.
2. Modification of Ultrafiltration Membranes by Deposition of Colloid Particles. R. G. Alargova, J. T. Petkov, N. D. Denkov, D. N. Petsev and I. B. Ivanov, Colloids Surf. A 134 (1998) 331-342.
3. Electron Cryomicroscopy of Bacteriorhodopsin Vesicles: Mechanism of Vesicle Formation. N. D. Denkov, H. Yoshimura, T. Kouyama, J. Walz and K. Nagayama, Biophysical Journal 74 (1998) 1409-1420.
1. DLVO and Non-DLVO Surface Forces and Interactions in Colloidal Dispersions. D. N. Petsev, N. D. Denkov, and P.A. Kralchevsky, J. Disp. Sci. Technol. 18 (1997) 647-659.
2. Effect of Droplet Deformability and Surface Forces on Flocculation. P. A. Kralchevsky, N. D. Denkov, K. D. Danov and D. N. Petsev, In: Proceedings of the 2nd World Congress on Emulsions (Paper 2-2-150), Bordeaux, September 1997.
3. Charge of Emulsion Droplets Covered with Nonionic Surfactants. I. B. Ivanov, K. G. Marinova, R. G. Alargova, N. D. Denkov, R. P. Borwankar, In: Proceedings of the 2nd World Congress on Emulsions, Paper 2-2-149 (1997).
4. Lateral Capillary Forces and Two-dimensional Arrays of Colloid Particles and Protein Molecules. N. D. Denkov, P. A. Kralchevsky, and I. B. Ivanov, J. Dispersion Sci. Technology 18 (1997) 577-591.
1. Charging of Oil-Water Interfaces Due to Spontaneous Adsorption of Hydroxyl Ions. K.G. Marinova, R.G. Alargova, N.D. Denkov, O.D. Velev, D.N. Petsev, I.B. Ivanov, R.P. Borwankar, Langmuir 12 (1996) 2045-2051.
2. Film Trapping Technique: Precise Method for Three-Phase Contact Angle Determination of Solid and Fluid Particles of Micrometer Size. A. Hadjiiski, R. Dimova, N. D. Denkov, I. B. Ivanov, and R. Borwankar, Langmuir 12 (1996) 6665-6675.
3. Precise Method for Measuring the Shear Surface Viscosity of Surfactant Monolayers. J. T. Petkov, K. D. Danov, N. D. Denkov, R. Aust and F. Durst, Langmuir 12 (1996) 2650-2653.
4. Method for Controlled Formation of Vitrified Films for Cryo-Electron Microscopy. N. D. Denkov, H. Yoshimura and K. Nagayama, Ultramicroscopy 65 (1996) 147-158.
5. Nanoparticle Arrays in Freely Suspended Vitrified Films. N. D. Denkov, H. Yoshimura, K. Nagayama, T. Kouyama, Physical Review Letters 76 (1996) 2354-2357.
2. Flocculation of Deformable Emulsion Droplets. I. Droplet Shape and Line Tension Effects. N. D. Denkov, D. N. Petsev, K. D. Danov, J. Colloid Interface Sci. 176 (1995) 189-200.
3. Measurement of the Drag Coefficient of Spherical Particles Attached to Fluid Interfaces. J. T. Petkov, N. D. Denkov, K. D. Danov, O. D. Velev, R. Aust, F. Durst, J. Colloid Interface Sci. 172 (1995) 147-154.
6. Lateral Capillary Forces between colloidal Particles Incorporated in Liquid Films or Lipid Bilayers. P. A. Kralchevsky, C. D. Dushkin, V. N. Paunov, N. D. Denkov, K. Nagayama, Progr. Colloid Polymer Sci. 98 (1995) 12-17.
3. Formation of Two-dimensional Structures from Colloidal Particles on Fluorinated Oil Substrate. G. S. Lazarov, N. D. Denkov, O. D. Velev, P. A. Kralchevsky and Kuniaki Nagayama, J. Chem. Soc. Faraday Trans. 90 (1994) 2077-2083.
4. Formation of Two-dimensional Colloid Crystals in Liquid Films under the Action of Capillary Forces. P. A. Kralchevsky, N. D. Denkov, V. N. Paunov, O. D. Velev, I. B. Ivanov, H. Yoshimura, K. Nagayama, J. Phys.: Condens. Matter, 6 (1994) A395-A402.
3. Adsorption from Surfactant Solutions under Diffusion Control. P. A. Kralchevsky, Y. S. Radkov and N. D. Denkov, J. Colloid Interface Sci. 161 (1993) 361-365.
4. Coalescence Dynamics of Deformable Brownian Emulsion Droplets. K. D. Danov, N. D. Denkov, D. N. Petsev, I. B. Ivanov and R. Borwankar, Langmuir 9 (1993) 1731-1740.
5. Interaction between Deformable Brownian Droplets. N. D. Denkov, D. N. Petsev, K. D. Danov, Phys. Rev. Lett. 71 (1993) 3226-3229.
6. Pair Interaction Energy between Deformable Drops and Bubbles. K. D. Danov, D. N. Petsev, N. D. Denkov, R. Borwankar, J. Chem. Phys. 99 (1993) 7179-7189.
7. Direct Measurement of Lateral Capillary Forces. O. D. Velev, N. D. Denkov, V. N. Paunov, P. A. Kralchevsky and K. Nagayama, Langmuir 9 (1993) 3702-3709.
8. Diffusion and Light Scattering in Dispersions of Charged Particles with Thin Electrical Double Layers. D. N Petsev, N. D. Denkov, K. Nagayama, Chemical Physics 175 (1993) 265-270.
10. Investigation on the Mechanisms of Stabilization of Food Emulsions by Vegetable Proteins. O. D. Velev, A. D. Nikolov, N. D. Denkov, G. Doxastakis, V. Kiosseoglu, G. Stalidis, Food Hydrocolloids, 7 (1993) 55-71.
11. Droplet Interactions and Coalescence in Emulsions. K.D. Danov, N.D. Denkov, D.N. Petsev, I.B. Ivanov and R.P. Borwankar, Proc. First World Congress on Emulsions, Paris, 1993.
3. Interfacial Properties and Emulsion Stability in Fluorinated Oil - Non-Fluorinated Oil - Surfactant(s) Systems. M. Morita, M. Matsumoto, S. Usui, T. Abe, N. Denkov, O. Velev, I. B. Ivanov, Colloids and Surfaces 67 (1992) 81-93.
4. Contact Angle, Film and Line Tension of Foam Films. I. Stationary and Dynamic Contact Angle Measurements. I.B. Ivanov, A.S. Dimitrov, A.D. Nikolov, N.D. Denkov and P.A. Kralchevsky, J. Colloid Interface Sci. 151 (1992) 446-461.
5. A Possible Mechanism of Stabilization of Emulsions with Solid Particles. N.D. Denkov, I. B. Ivanov, P.A. Kralchevsky, D.T. Wasan, J. Colloid Interface Sci. 150 (1992) 589-593.
6. Diffusion and Light Scattering in Suspension of Strongly Charged Particles. N. D. Denkov, D. N. Petsev, Physica A 183 (1992) 462.
7. Diffusion of Charged Colloidal Particles at Low Volume Fraction: Theoretical Model and Light Scattering Experiments. D. N. Petsev, N. D. Denkov, J. Colloid Interface Sci. 149 (1992) 329.
1. Effect of Droplet Deformation on the Interactions in Microemulsions. N.D. Denkov, P.A. Kralchevsky, I.B. Ivanov, C.S. Vassilieff, J. Colloid Interface Sci. 143 (1991) 157-173.
1. Attraction between Brownian Particles of Identical Charge in Colloid Crystals. P. A. Kralchevsky, N. D. Denkov, I. B. Ivanov and A. D. Nikolov, Chem. Phys. Letters 166 (1990) 452-458.
3. Reply to the letter by Derjaguin and Churaev. I.B. Ivanov, A.D. Nikolov, P.A. Kralchevsky, N.D. Denkov, J. Colloid and Interface Sci. 134 (1990) 294-296.

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