Izabela Naydenova PhD
Post Doc. Researcher

Tel: +353-1-4027925

Fax: +353-1-4024988

Email: izabela.naydenova@dit.ie

Brief Biography
Educated at the University of Sofia "St. Kliment Ochridski", graduated in 1993 with M.Sc. in physics (applied optics). Worked as a teacher in physics at the Secondary School "M. Gorky", Sofia (1993-1995). Spent four years as a Ph.D. student at the Central Laboratory of Optical Storage and Processing of Information, Bulgarian Academy of Sciences (1995-1999), obtaining Ph.D. degree with a thesis entitled "Polarimetric and holographic investigations of the photoinduced optical anisotropy and surface relief gratings in azodye-containig polymers".
Worked as a postdoctoral research fellow in the group of Priv. Doz. Dr. Alexander Ogrodnik at the Institute for Physical and Theoretical Chemistry, Technical University of Munich, (1999-2002). Joined DIT as an Arnold F. Graves postdoctoral research fellow in October 2002.

Research Interests
Research interests are in holographic recording materials (currently - self processing photopolymers) and optical data storage of information. Other research interests are: polarization holography; photoinduced optical anisotropy in polymers containing azodye molecules; photoinduced charge transfer in modified DNA and charge transfer dynamic in dye sensitized TiO2 nanoparticles and its application for solar energy conversion.

Publications in scientific journals:

16. K. Pavani , I. Naydenova , S. Martin, J. Raghavendra, R. Howard and V.Toal , Electro-optical switching of liquid crystal diffraction gratings by using surface relief effect in the photopolymer accepted for publication in Optics Communications.

15. K Pavani, I Naydenova, S Martin and V Toal, Photoinduced surface relief studies in an acrylamide-based photopolymer, J. Opt. A: Pure Appl. Opt. 9 (2007) 43–48.

14. R. Jallapuram, I. Naydenova, S. Martin, R. Howard, V. Toal, Sven Frohmann, Susanna Orlic, Hans J Eichler, Acrylamide based photopolymer for micro-holographic data storage, Optical Materials, 28 (12) , 329-1333, 2006.

13. E. Mihaylova, I. Naydenova, Barry Duignan, S. Martin, V. Toal, Photopolymer Diffractive Optical Elements in Electronic Speckle Pattern Shearing Interferometry, Optics and Laser in Engineering, 44, 965-974, 2006.

12. H. Sherif, I. Naydenova, S. Martin, C. McGinn, and V. Toal, Characterisation of an acrylamide-based photopolymer for data storage utilizing holographic angular multiplexing, J. Opt. A: Pure Appl. Opt, 7, 255-260, 2005.

11. I. Naydenova, E. Mihaylova, S. Martin, V. Toal, Holographic patterning of acrylamide–based photopolymer surface Optics Express, V. 13 (13), pp. 4878-4889, 2005.

10. I. Naydenova, S. Martin, R. Jallapuram, R. Howard, V. Toal, Investigations of the diffusion processes in self-processing acrylamide-based photopolymer system, Applied Optics, 43 (14), 2900, 2004.

9. E. Mihaylova, I. Naydenova, S. Martin, V. Toal, Electronic spackle pattern shearing interferometer with a photopolymer holographic grating, Applied Optics, 43 (12), 2439, 2004

8. Davis WB, Hess S, Naydenova I, Haselsberger R, Ogrodnik A., Michel-Beyerle M.E., Marschal N., “Distance-dependent activation energies for hole injection from protonated 9-amino-6-chloro-2-methoxyacridine into duplex DNA”, J Am. Chem. Soc. 124 (11), 2422-2423, MAR 20 2002.

7. Davis WB, Naydenova I, Haselsberger R, Ogrodnik A., Michel-Beyerle M.E., “Dynamics of hole trapping by G, GG, and GGG in DNA”, ANGEW CHEM INT EDIT 39 (20), 3649-3652, 2000.

6. M. Ivanov, I. Naydenova, L. Nikolova, T. Todorov, Tz. Petrova, N. Tomova, V. Dragostinova, ”Light -induced optical activity in optically ordered amorphous side-chain azobenzene containing polymer”, J. Mod. Opt., 47 (5), 861-867, APR 15 2000.

5. I. Naydenova, L. Nikolova, P. S. Ramanujam, S. Hvilsted, “Light-induced circular birefringence in cyanoazobenzene side-chain liquid-crystalline polyester films”, J. Opt. A: Pure Appl. Opt., 1, 438-441, 1999.

4. I. Naydenova, Tz. Petrova, N. Tomova, V. Dragostinova, L. Nikolova, T. Todorov, “Polarization holographic gratings with surface relief in amorphous azobenzene containing methacrylic copolymers”, Pure Appl. Opt., 7, 723-731, 1998.

3. I. Naydenova, L. Nikolova, T. Todorov, N. C. R. Holme, P.S. Ramanujam, S. Hvilsted, ”Diffraction from polarization holographic gratings in side – chain azobenzene polyesters”, J. Opt. Soc. Am. B, 15, p. 1257, 1998.

2. I. Naydenova, L. Nikolova, T. Todorov, F. Andruzzi, S. Hvilsted, P. S. Ramanujam, “Polarimetric investigation of materials with both linear and circular anisotropy”, J. Mod. Opt., 44 (9), 1643-1650, 1997.

1. Tz. Petrova, N. Tomova, V. Dragostinova, I. Naydenova, T. Todorov, L. Nikolova, ”Side – chain azobenzene polymers with strong photoinduced birefringence”, Bulgarian Chemical Communications, 29 (2), 266-273, 1996/97.

Patent applications:

2. S. Martin, I. Naydenova, V. Toal, V. Farrelly "A holographic method and product" UK patent application, filed July 2006.

1. I. Naydenova, H. Sherif, S. Martin, R. Jallapuram and V. Toal, " ‘A device’ (sensor device comprising a holographic element)" Irish patent application, no. 2005/0784 filed Nov 25th 2005.

Publications in proceedings of scientific conferences:

21. K. Pavani, I. Naydenova, S. Martin, V. Toal, “Characterization of an acrylamide based photopolymer for fabrication of liquid crystal devices.” Proceeding of International conference on Materials Energy and Design, DIT, 2006, 369-379.

20. I. Naydenova, H. Sherif, S. Mintova, S. Martin, V. Toal, “Holographic recording in nanoparticle-doped photopolymer”, SPIE proceedings of the International Conference on Holography, Optical Recording and Processing of Information, V 6252, 45-50, 2006.

19. S. Martin, I. Naydenova, V. Toal, R. Jallapuram, R. G. Howard, “Two way diffusion model for the recording mechanism in a self developing dry acrylamide photopolymer”, SPIE proceedings of the International Conference on Holography, Optical Recording and Processing of Information, V. 6252, 37-44, 2006.

18. E. Mihaylova, I. Naydenova, S. Martin, V. Toal, “Comparison of three electronic speckle pattern shearing interferometers using photopolymer holographic optical elements”, SPIE proceedings of the International Conference on Holography, Optical Recording and Processing of Information, V. 6252, 466-471, 2006.

17. V. Toal, M. Whelan, A. Volcan, I. Naydenova and S. Martin, Replay at optical communications wavelengths of holographic gratings recorded in the visible, SPIE proceedings of the International Conference on Holography, Optical Recording and Processing of Information, V 6252, 31-37, 2006.

16. Sridhar Reddy Guntaka, J.Raghavendra, Vincent Toal, Izabela Naydenova, Suzanne Martin, S. Mintova, A compact electronic speckle pattern interferometry system using a photopolymer reflection holographic optical element, SPIE proceedings of 17th International Conference on Photonics in Europe, V.5856, 157, 2005.

15. E. Mihaylova, I. Naydenova, S. Martin, V. Toal, Simple electronic speckle pattern shearing interferometer with a holographic grating as a shearing element, to be published in the SPIE proceedings of the International conference Optical systems design, Vol. 5962, 596226, 2005.

14. I. Naydenova, K. Pavani, E. Mihaylova, K. Loudmer, S. Martin, V. Toal “Holographic recording of patterns in thin film acrylamide-based photopolymer “," SPIE proceedings of OPTO-IRELAND, V. 5827, 163-172, 2005.

13. H. Sherif, I. Naydenova, S. Martin, C. McGinn V. Toal, G. Berger, C. Denz "Study of an acrylamide-based photopolymer for use as a holographic data storage medium" SPIE proceedings of OPTO-IRELAND, V.5827, 305-313, 2005.

12. R. Jallapuram, I. Naydenova, H. J. Byrne, S. Martin, R. G. Howard, V. Toal, “Investigation of polymerization rate in acrylamide-based photopolymer for holographic recording”, SPIE proceedings of Opto-Ireland conference, V.5826, 75-82, 2005.

11. I. Naydenova, E. Mihaylova, S. Martin, V. Toal, “Investigation of the photoinduced surface relief modulation in acrylamide-based photopolymer”, Proceedings of MATRIB’04, Vela Luka, Croatia, p. 36, 2004.

10. E. Mihaylova, I. Naydenova, S. Martin, V. Toal, Proceedings of 6-th international conference on Vibration Measurements by Laser Techniques: Advance Applications, Ancona, Italy, pp.73-78, 2004.

9. R. Jallapuram, I. Naydenova , V. Toal, Suzanne Martin, Robert Howard, Spatial frequency response of acrylamide holographic photopolymer, Proceedings of International Conference on Laser Applications and Optical Metrology, Editors: C. Shakher, D. S. Mehta, Anamaya Publishers, New Delchi, 275-279, 2003.

8. E. Mihaylova, I. Naydenova, H. Sherif, S. Martin, V. Toal, Application of photopolymer holographic gratings in electronic spackle pattern shearing interferometry, Proceedings of SPIE -- Volume 5249
Optical Design and Engineering, Laurent Mazuray, Philip J. Rogers, Rolf Wartmann, Editors, February 2004, pp. 318-326.

7. E. Mihaylova, I. Naydenova, S. Martin, V. Toal, Application of a photopolymer material in speckle pattern shearing interferometry, Proceedings of Ninth International Conference on Photorefractive Effects, Materials and Devices, La Colle sur Loup, France, June 17-21, PD7, 2003.

6. I. Naydenova, Tz. Petrova, N. Tomova, V. Dragostinova, L. Nikolova, T. Todorov, “Holographic investigations on side-chain azobenzene copolymers of acrylic type”, POLYM. PREPR. , 39, p.342, 1998.

5. Tz. Petrova, N. Tomova, I. Naydenova, L. Nikolova, T. Todorov, B. Mednikarov, “Holographic gratings with birefringence and surface relief in thin films of side-chain azobenzene copolymers of acrylic type”, Proceedings of Tenth ISCMP, Varna’98, Editors: J. M. Marshall, N. Kirov, A. Vavrek, J.M. Maud, Word Scientific, 513-516, 1998.

4. I. Naydenova, T.Todorov, Tz. Petrova N. Tomova, and V. Dragostinova, "Phase polarization holographic gratings in thin azodoped gelatine films", Proceedings of Tenth ISCMP, Varna’98, Editors: J. M. Marshall, N. Kirov, A. Vavrek, J. M. Maud, Word Scientific, 509-512, 1998.

3. L. Nikolova, I. Naydenova, P. S. Ramanujam, S. Hvilsted, “Light-induced optical activity in liquid-crystalline side-chain azobenzene polyester films”, Proceedings of Tenth ISCMP, Varna'98, Editors: J. M. Marshall, N. Kirov, A. Vavrek, J. M. Maud, Word Scientific, 321-324, 1998.

2. Tz. Petrova, N. Tomova, V. Dragostinova, I. Naydenova, L. Nikolova, T. Todorov , ”Thin films of acrylic – type copolymers with side – chain azobenzene chromophores for polarization optical recording” in “Future directions in thin film science and technology”, Ed. J. M. Marshall, N. Kirov, A. Vavrek, J.M. Maud, World Scientific Singapore, New Jersey, London, Hong Kong, 421-424, 1997.

1. I. Naydenova, N. Tomova, V. Dragostinova, Tz. Petrova, M. Ivanov, “Dye –
polymer systems with nonlinear optical properties, sensitive in the red spectral region” in “Future directions in thin film science and technology”, Ed. J. M. Marshall, N. Kirov, A. Vavrek, J.M. Maud, World Scientific Singapore, New Jersey, London, Hong Kong, 425-429, 1997.

recent presentation

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Holographic photopatterning in acrylamide-based photopolymer, I. Naydenova, E. Mihaylova, S. Martin and V. Toal, COST P8, Paris, September 2004