Nadia Ebralidze

Academic Doctor of Science

Vladimer Chavchanidze Institute of Cybernetics of the Georgian Technical University

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THE SELF-INDUCED ENSEMBLE OF PARTICLES AND ANISOTROPY PHOTOINDUCTION IN ORGANIC COMPOUNDSTariel Ebralidze, Nadia Ebralidze, Giorgi MumladzearticleJomard Publishing / Journal of Modern Technology & Engineering, August 2018 / ტ.3, N2, 2018, გვ.113-116 ISSN 2519-4836 http://jomardpublishing.com/UploadFiles/Files/journals/JTME/V3N2/EbralidzeT.pdfEnglishState Targeted Program
Molecular Aggregations and Induction of Anisotropy by Light in Azodyes"Tariel Ebralidze, Nadia Ebralidze, Giorgi Mumladze"articleScience PG / Optics, Jule 2015 / ტ.4, N 2, გვ. 13–16 ISSN 2328-7780 10.11648/j.optics.20150402.11EnglishState Targeted Program
Molecular Aggregations and Anisotropy Photoinduction in Organic CompoundsTariel Ebralidze, Nadia Ebralidze, Giorgi MumladzearticleScience PG / Optics, Jule 2014 / ტ.3, N 4, გვ. 33–36 ISSN 2328-7780 doi: 10.11648/j.optics.20140304.12EnglishState Targeted Program
Anisotropy Photoinduction during the Mass Associations of Dye Molecules in Gelatin FilmsTariel Ebralidze, Nadia Ebralidze, Giorgi Mumladzearticle Hindawi Publishing / Journal of Materials, Jan 2013 / v. 2013, Article ID 507938 https://doi.org/10.1155/2013/507938EnglishState Targeted Program
Light-controlled mass formation of aggregates of molecules in organic compoundsTariel D. Ebralidze, Nadia A. Ebralidze, Giorgi A. Mumladze, Enriko A. KitsmarishviliarticleOPTICA Publishing Group / CHINESE OPTICS LETTERS, Sep 2009, / VOL.7, N9, pp. 823-825IF 2.448 Scopus SJR 0.617 ISSN 16717694 10.3788/COL20090709.0823EnglishGrant Project
Photo-induced reorientation of molecules in dye micro crystalsTariel Ebralidze, Nadia EbralidzearticleOPTICA Publishing Group / CHINESE OPTICS LETTERS, Sep 2006, / VOL.4, N1, pp. 43-44IF 2.448 Scopus SJR 0.617 ISSN 16717694 https://opg.optica.org/col/abstract.cfm?URI=col-4-1-43EnglishState Targeted Program
Weigert’s effect observed in dyeTariel Ebralidze, Nadia EbralidzearticleTransworld Research Network, Kerala, India / Recent Res. Devel. Optics / Special Issue 2003 EnglishState Targeted Program
Weigert’s effect mechanism observed in dyesTariel D. Ebralidze, Nadia A. Ebralidze, Murad A. BazadzearticleOPTICA Publishing Group / Applied Optics, Jan 2002 / VOL.41, N1, pp. 1819-1821IF 1.980 Scopus SJR 0.668 ISSN 1559-128X https://doi.org/10.1364/AO.41.000078EnglishState Targeted Program
Photocrystallization observed in organic compoundsTariel Ebralidze, Nadia Ebralidze, Enriko KitsmarishviliarticleOPTICA Publishing Group / Applied Optics, Apr 2001 / VOL.40, N11, pp. 1819-1821IF 1.980 Scopus SJR 0.668 ISSN 1559-128X https://doi.org/10.1364/AO.40.001819EnglishState Targeted Program

15th European Conference on Liquid CrystalsWrocław, Poland201930 ივნისი–5 ივლისიPolish Academy of SciencesOptical image formation in organic films in the case of different kinds of dye molecules associatesposter

In this work are studied the aspects of optical image formation in gelatin films in the presence of Chrisophenine and Acridine dye molecules associates. It is shown that by mixing the saturated water solutions consisting of Chrisophenine and Acridine Yellow and Chrisophenine and Acridine Orange in gelatin films, massive self-induced luminescence particles possessing polarization sensitivity are obtained. The particles are induced during film preparation and drying. The anisotropic particles are induced in the solvent forming an anisotropic polarization sensitive liquid. After the drying process, a film possessing optical properties of a polymer liquid crystal structure is formed. Here are presented the microstructure of such a film, which was observed in crossed polarizers, and the sequence scheme of the optical image formation in the film as well. Herewith, the film transmits light in any positions between crossed polarizers. When irradiating with active non-polarized light, the film is darkened in the crossed polarizers. By secondary exposure of the darkened area with the active, but linearly polarized in this case light, anisotropy photoinduction in the form of “grains” takes place. All the presented pictures are snapshots taken in the crossed polarizers. The difference between the particles located in the central part and in the outer ring is that the particles in the center have uniformly oriented optical axes. This can be confirmed by turning that film by certain angle, when all the particles in the small central circle will be darkened. If we continue 

https://www.ilcsoc.org/news/files/3b432b5e0b46c48033cfa5f6aefe7b6e-77.html
The International Scientific Conference Dedicated to the 90th Anniversary of Georgian Technical University — "Basic Paradigms in Science and Technology Development for the 21th Century"Tbilisi, Georgia201219 სექ–21 სექGeorgian Technical UniversityANISOTROPY PHOTO-INDUCTION DURING THE MASS ASSOCIATIONS OF DYE MOLECULES IN GELATIN FILMSoral

In order to define the mechanisms of Optical image Anisotropy Photoinduction formation, we studied the dependence of microstructure on the active light exposition. We used the polyvinyl and gelatin films stained by the azodyes “Mordant Pure Yellow" and Chrisophenine. Transparency of film with the photoinduced anisotropy in the crossed polarizers, according to the active light exposition, mostly is modulated on the basis of microstructure modulation.

http://gesj.internet-academy.org.ge/conf_gtu90/ge/index_ge.php

Web of Science: ციტირების ინდექსი-47, H ინდექსი-3
Scopus: ციტირების ინდექსი-48, H ინდექსი-3
Google Scholar: ციტირების ინდექსი-67, H ინდექსი-4

Doctoral Thesis Referee

Master Theses Supervisor

Doctoral Thesis Supervisor/Co-supervisor

Scientific editor of monographs in foreign languages

Scientific editor of a monograph in Georgian

Editor-in-Chief of a peer-reviewed or professional journal / proceedings

Review of a scientific professional journal / proceedings

Member of the editorial board of a peer-reviewed scientific or professional journal / proceedings

Participation in a project / grant funded by an international organization

Participation in a project / grant funded from the state budget


Optical information Recording during polarized light-controlled phase transitions in organic compounds, GNSF/ST08/1-365SHOTA RUSTAVELI NATIONAL SCIENCE FOUNDATION OF GEORGIA 02.03.2009 – 01.03.2011Main Staff Member

Patent authorship

Membership of the Georgian National Academy of Science or Georgian Academy of Agricultural Sciences

Membership of an international professional organization

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National Award / Sectoral Award, Order, Medal, etc.

Honorary title

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Research articles in high impact factor and local Scientific Journals


Photocrystallization observed in organic compounds, Applied Optics, Vol. 40, Issue 11, 2001, Optica Publishing GroupState Target Program

Consideration is given to the action of azo-dye temperature on Weigert’s effect. Azo-dye-colored gelatin emulsions, on heating, have been found to show an increase both in the anisotropy photoinduction rate and in the magnitude of saturation anisotropy.

https://doi.org/10.1364/AO.40.001819
Weigert’s effect mechanism observed in dyes, Applied Optics, Vol. 41, Issue 1, 2002, Optica Publishing GroupState Target Program

Anisotropic grains have been shown to be spontaneously induced in films that have been oversaturated and overcooled with dye in which Weigert’s effect can be observed. Some of the grains exposed to active linearly polarized light are destroyed with the result that the film becomes anisotropic.

https://doi.org/10.1364/AO.41.000078
Hartley’s fractional crystallization and Weigert’s effect, Applied Optics, Vol. 43, Issue 5, 2004, Optica Publishing GroupState Target Program

In the course of slow evaporation of an azo-dye chrysophenine-saturated gelatin-water solution, dye crystals that developed two different interference colors were observed in the gelatin; the colors were yellow and blue. The crystals that produce a blue interference color undergo disintegration on exposure to non-polarized light from a mercury lamp.

https://doi.org/10.1364/AO.43.001147
Photo-induced reorientation of molecules in dye micro crystals, Chinese Optics Letters, Vol. 4, Issue 1, 2005, Optica Publishing GroupState Target Program

Upon massive generation of anisotropic grains of azo dye methyl orange in a gelatin film exposed to active polarized light, a cluster of micro crystals with optical axes of similar orientations has been produced. The anisotropy observed has been found to disappear under exposure to active natural light.

https://opg.optica.org/col/abstract.cfm?uri=col-4-1-43&origin=search
Anisotropic photoinduction in Rhodamine 6G dye-painted gelatin film, Applied Optics 46(33), 2007, Optica Publishing GroupState Target Program

A series of tests have been performed involving anisotropy photoinduction in Rhodamine 6G-dyed gelatin film. A film with photoinduced anisotropy has been shown to be characterized by photochromism. The dichroism of the dye molecule aggregates has been investigated.

https://doi.org/10.1364/AO.46.007993
Light-controlled mass formation of aggregates of molecules in organic compounds, CHINESE OPTICS LETTERS, VOL.7, N9, 2009, Optica Publishing GroupGrant Project

During the mass formation of aggregates of molecules in a gelatin film dyed with the mixture of chrysophenine and acridine yellow dyes, photo-reorientation, photo-disorientation, and photo-orientation of the molecules are observed. Based on these observations, the photo-induction of granular aniso tropy may be realized.

https://www.researching.cn/ArticlePdf/m00005/2009/7/9/COL07090823.pdf
Anisotropy Photoinduction during the Mass Associations of Dye Molecules in Gelatin Films, Journal of Materials, Hindawi Publishing, Volume 2013 (2013), Article ID 507938, 2013State Target Program

By using the video microscopy, the picture of the formation of anisotropy photoinduction in the form of grains in time is shown, when anisotropy in the film is induced in individual micrograins and the concentration and sizes of the grains are modulated depending on the light exposition. This phenomenon was observed in the gelatin film dyed with the mixture prepared with the saturated solutions of Chrysophenine and Acridine Yellow mixed with 1 : 1 proportion.

https://doi.org/10.1155/2013/507938

Publication in Scientific Conference Proceedings Indexed in Web of Science and Scopus