Mr. Deyan D. Ivanov Profile

Deyan D. Ivanov

PhD Student at Lab de Physique des Interfaces et des Couches Minces

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Author

Publications (13)

Proceedings Article | 13 March 2024 Presentation

Polarimetric images of human brain histological sections: impact of nerve fiber bundles crossing

Deyan Ivanov, Lu Si, Leonard Felger, Theoni Maragkou, Philippe Schucht, Marie-Claire Schanne-Klein, Hui Ma, Razvigor Ossikovski, Tatiana Novikova

Proceedings Volume PC12845, PC1284506 (2024) https://doi.org/10.1117/12.3004218

KEYWORDS: Brain, Neuroimaging, Polarimetry, Nerve, Tumors, Tissue optics, Depolarization, White matter, Reflection, Cancer detection

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SPIE Journal Paper | 12 September 2023 Open Access

Impact of corpus callosum fiber tract crossing on polarimetric images of human brain histological sections: ex vivo studies in transmission configuration

Deyan Ivanov, Lu Si, Leonard Felger, Theoni Maragkou, Philippe Schucht, Marie-Claire Schanne-Klein, Hui Ma, Razvigor Ossikovski, Tatiana Novikova

JBO, Vol. 28, Issue 10, 102908, (September 2023) https://doi.org/10.1117/12.10.1117/1.JBO.28.10.102908

KEYWORDS: Brain, Polarimetry, Depolarization, Mueller matrices, Neuroimaging, Biological samples, Tumors, Nerve, Brain tissue, Polarization

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Proceedings Article | 11 August 2023 Paper

Characterization of different thawing mechanisms of fibroblast cell-containing tissue models by Mueller polarimetry and statistical analysis

Deyan Ivanov, Anika Hoeppel, Julian Schwebler, Christian Lotz, Sofia Dembski, Razvigor Ossikovski, Tatiana Novikova

Proceedings Volume 12629, 1262903 (2023) https://doi.org/10.1117/12.2669082

KEYWORDS: Tissues, 3D modeling, Polarimetry, Statistical analysis, Statistical modeling, Data modeling, Biological samples, Mueller matrices, Tissue optics, Image processing

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Proceedings Article | 11 August 2023 Paper

Differentiation of collagen-related skin diseases through polarimetry and fluorescence

Tsanislava Genova, Deyan Ivanov, Lidia Zaharieva, Victoria Mircheva, Tatiana Novikova, Razvigor Ossikovski, Petranka Troyanova

Proceedings Volume 12627, 126272G (2023) https://doi.org/10.1117/12.2670922

KEYWORDS: Tissues, Fluorescence, Skin, Polarimetry, Diseases and disorders, Depolarization, Collagen, Biological samples, Pathology, Fluorescence spectroscopy

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Proceedings Article | 7 March 2022 Presentation

Polarimentric differentiation of ex vivo colon samples complemented by machine-learning

Deyan Ivanov, Viktor Dremin, Tsanislava Genova, Alexander Bykov, Igor Meglinski, Tatiana Novikova, Razvigor Ossikovski

Proceedings Volume PC11963, PC1196307 (2022) https://doi.org/10.1117/12.2615297

KEYWORDS: Polarimetry, Colon, Tissue optics, Tumors, Tissues, Principal component analysis, Polarization, Optical spheres, Diagnostics

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Proceedings Article | 5 March 2021 Presentation + Paper

Symmetric decomposition of Mueller matrices reveals a new parametric space for polarimetric assistance in colon cancer histopathology

Deyan Ivanov, Viktor Dremin, Ekaterina Borisova, Alexander Bykov, Igor Meglinski, Tatiana Novikova, Razvigor Ossikovski

Proceedings Volume 11646, 1164614 (2021) https://doi.org/10.1117/12.2578090

KEYWORDS: Polarimetry, Colon, Tissues, Monte Carlo methods, Photon transport, Algorithm development, Tissue optics, Optical properties, Matrices, Gold

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Proceedings Article | 2 April 2020 Presentation + Paper

Autofluorescence spectroscopy of cutaneous neoplasia under ultraviolet, visible and near infrared excitation

Ekaterina Borisova, Deyan Ivanov, Boyko Kolev, Tsanislava Genova, Victoria Mircheva, Stoyan Ilyov, Lidia Zaharieva, Ilze Lihachova, Alexej Lihachovs, Janis Spigulis, Petranka Troyanova

Proceedings Volume 11363, 113630Z (2020) https://doi.org/10.1117/12.2555982

KEYWORDS: Skin, Luminescence, Diagnostics, Spectroscopy, Near infrared, Tissues, Melanoma, Pathology, Skin cancer, Ultraviolet radiation

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Proceedings Article | 17 February 2020 Paper

Towards combined multispectral, FLIM and Raman imaging for skin diagnostics

J. Spigulis, I. Kuzmina, V. Lukinsone, M. Tamošiūnas, I. Oshina, L. Ozolina, A. Maslobojeva, M. Kuzminskis, D. Ivanov, E. Borisova

Proceedings Volume 11232, 112320N (2020) https://doi.org/10.1117/12.2559107

KEYWORDS: Raman spectroscopy, Skin, Diagnostics, Multispectral imaging, Luminescence, Prototyping, Fluorescence lifetime imaging, Light emitting diodes, Cameras, RGB color model

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Proceedings Article | 22 July 2019 Paper

Tissue polarimetric study I: In search of reference parameters and depolarizing Mueller matrix model of ex vivo colon samples

Deyan Ivanov, Razvigor Ossikovski, Tatiana Novikova, Pengcheng Li, Ekaterina Borisova, Tsanislava Genova, Lian Nedelchev, Dimana Nazarova

Proceedings Volume 11075, 1107514 (2019) https://doi.org/10.1117/12.2526594

KEYWORDS: Tissues, Polarimetry, Tissue optics, Colon, Polarization, Tumors, Light scattering, Monte Carlo methods, Diagnostics, Scattering

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Proceedings Article | 29 January 2019 Paper

Comparative study on the bio-activity of hemoglobin and myoglobin as recognition materials in biosensors

G. Dyankov, Ch. Kisov, E. Belina, E. Pavlova, E. Borisova, A. Gisbrecht, D. Ivanov

Proceedings Volume 11047, 1104705 (2019) https://doi.org/10.1117/12.2516536

KEYWORDS: Carbon monoxide, Proteins, Coating, Transducers, Diffraction gratings, Biosensors, Iron, Gold, Particles, Sensors

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Apart from the huge physiological importance of hemo-, myo- globin and hemin, they play also an important role as robust and effective recognition agents in chemical and biological sensors. In this aspect the key factor in developing a reliable biosensor is the immobilization on the transducer. Usually immobilization can be produced by chemical methods, but there is frequently a need for homogeneous films of well-controlled thickness or films which can be deposited in a dry environment. The film thickness is of main importance for the optical transducer detected by Surface Plasmon Resonance (SPR) what is used in our study. Hundreds of immobilization protocols have been developed in an effort to ensure high performance sensing. All of them are focused on finding and deposition of appropriate matrices in which the recognition medium can be incorporated. However, the matrix always deteriorates the effectiveness of recognition. It seems that the best approach is to perform direct immobilization of the recognition medium. However, this is not always possible regarding the organic materials – the problem is whether the deposition retains the bioactivity of the recognition agent. On the other hand, the type of the transducer also imposes constrains. For example, the direct immobilization of the proteins is not possible for electrochemical sensors, because of the distance between the redox center and electrodes is too long. Evaluating the pros and cons of organic (protein) film deposition we have considered to study the possibility for direct immobilization of myoglobin, hemoglobin and hemin on SPR transducer. To best of our knowledge, SPR biochip with immobilized myoglobin, hemoglobin and hemin has never been constructed before. We have used spin coating, for direct immobilization and matrix-assisted pulsed-laser evaporation (MAPLE) for elaboration of the SPR biochip. The performance of both SPR chips – direct and MAPLE immobilized, was studied by SPR registration of the binding activity of myo- and hemo- globin ligands with carbon monoxide (CO), carbon dioxide (CO₂) and nitride oxide (NO).

Proceedings Article | 29 January 2019 Paper

Multiwavelength polarimetry of gastrointestinal ex vivo tissues for tumor diagnostic improvement

Deyan Ivanov, Tsanislava Genova-Hristova, Ekaterina Borisova, Lian Nedelchev, Dimana Nazarova

Proceedings Volume 11047, 1104707 (2019) https://doi.org/10.1117/12.2516645

KEYWORDS: Tissues, Tumors, Polarimetry, Polarization, Diagnostics, Tissue optics, Light scattering, Colon, Statistical analysis, Biomedical optics

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Proceedings Article | 5 January 2017 Paper

Laser induced optically and thermally reversible birefringence in azopolymers

D. Nazarova, L. Nedelchev, D. Ivanov, B. Blagoeva, N. Berberova, E. Stoykova, G. Mateev, D. Kostadinova

Proceedings Volume 10226, 1022608 (2017) https://doi.org/10.1117/12.2262357

KEYWORDS: Birefringence, Polymers, Polarization, Thermography, Laser optics, Anisotropy, Chromophores, Thin films, Holographic materials, Holography

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Proceedings Article | 5 January 2017 Paper

Time dependent spectral birefringence excited with laser light in azopolymers and azopolymers doped with ZnO

L. Nedelchev, D. Nazarova, B. Blagoeva, D. Ivanov, D. Daskalova, N. Berberova, G. Mateev, D. Kostadinova

Proceedings Volume 10226, 1022606 (2017) https://doi.org/10.1117/12.2262608

KEYWORDS: Birefringence, Zinc oxide, Absorbance, Nanoparticles, Nanocomposites, Polarization, Polarizers, Transmittance, Thin films, Spectroscopy

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Showing 5 of 13 publications

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