Search Results - "Nedelchev, Lian"

Hybrid Dispersion Model Characterization of PAZO Azopolymer Thin Films over the Entire Transmittance Spectrum Measured in the UV/VIS/NIR Spectral Region by Minkov, Dorian, Nedelchev, Lian, Angelov, George, Marquez, Emilio, Blagoeva, Blaga, Mateev, Georgi, Nazarova, Dimana

“…Notwithstanding the significant optical applicability of PAZO polymer films, there are no accurate data about their optical characteristics. To remedy this…”
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Density Functional Theory Prediction of Laser Dyes-Cucurbit[7]uril Binding Affinities by Petkova, Vladislava, Dobrev, Stefan, Kircheva, Nikoleta, Nazarova, Dimana, Nedelchev, Lian, Nikolova, Valya, Dudev, Todor, Angelova, Silvia

“…Among a variety of diverse host molecules distinguished by specific characteristics, the cucurbit[n]uril (CB) family stands out, being widely known for the…”
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Nanocomposite Photoanisotropic Materials for Applications in Polarization Holography and Photonics by Nazarova, Dimana, Nedelchev, Lian, Berberova-Buhova, Nataliya, Mateev, Georgi

“…Photoanisotropic materials, in particular azodyes and azopolymers, have attracted significant research interest in the last decades. This is due to their…”
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High photoinduced birefringence in thermally treated layers of the azopolymer PAZO with significantly changed absorbance spectrum by Mateev, Georgi, Dimov, Deyan, Nazarova, Dimana, Stoykova, Elena, Hong, Keehoon, Nedelchev, Lian

“…In this experimental work we present the effect of thermal treatment of azopolymer thin films on their absorbance spectra and how that influences the…”
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Tunable Polarization and Surface Relief Holographic Gratings in Azopolymer Nanocomposites with Incorporated Goethite (α-FeOOH) Nanorods by Nedelchev, Lian, Mateev, Georgi, Strijkova, Velichka, Salgueiriño, Verónica, Schmool, David S., Berberova-Buhova, Nataliya, Stoykova, Elena, Nazarova, Dimana

“…We employ two approaches to tune the properties of concurrently inscribed volume polarization and surface relief gratings in nanocomposite thin films…”
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Polarization Diffraction Gratings in PAZO Polymer Thin Films Recorded with Digital Polarization Holography: Polarization Properties and Surface Relief Formation by Berberova-Buhova, Nataliya, Nedelchev, Lian, Mateev, Georgi, Nikolova, Ludmila, Stoykova, Elena, Ivanov, Branimir, Strijkova, Velichka, Hong, Keehoon, Nazarova, Dimana

“…In this work, we study the polarization properties of diffraction gratings recorded in thin films of the azopolymer PAZO…”
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Two-Dimensional Polarization Holographic Gratings in Azopolymer Thin Films: Polarization Properties in the Presence or Absence of Surface Relief by Mateev, Georgi, Nedelchev, Lian, Nikolova, Ludmila, Ivanov, Branimir, Strijkova, Velichka, Stoykova, Elena, Choi, Kihong, Park, Joongki, Nazarova, Dimana

“…During polarization holographic recording in azopolymer thin films, usually together with the volume anisotropic grating, a surface relief grating (SRG) is…”
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Intensity-based dynamic speckle method using JPEG and JPEG2000 compression by Stoykova, Elena, Blagoeva, Blaga, Berberova-Buhova, Natalya, Levchenko, Mikhail, Nazarova, Dimana, Nedelchev, Lian, Park, Joongki

“…Applied Optics, 61(5), B287-B296 (2022) Statistical processing of speckle data enables observation of speed of processes. In intensity-based pointwise dynamic…”
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Optical anisotropy induced at five different wavelengths in azopolymer thin films: Kinetics and spectral dependence by Nedelchev, Lian, Ivanov, Deyan, Blagoeva, Blaga, Nazarova, Dimana

“…•Birefringence kinetics were obtained for five recording wavelengths (355, 442, 491, 514, 532 nm) in the azopolymer PAZO.•For each of these wavelengths,…”
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Structure-property relationship and photoinduced birefringence of the azo and azo-azomethine dyes thin films in PMMA matrix by Stoilova, Ani, Georgiev, Anton, Nedelchev, Lian, Nazarova, Dimana, Dimov, Deyan

“…Here, we present previously synthesized azo and azo-azomethine dyes as thin films in PMMA matrix in order to investigate their spectral and optical properties…”
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Density Functional Theory Prediction of Laser Dyes-Cucurbit7uril Binding Affinities by Petkova, Vladislava, Dobrev, Stefan, Kircheva, Nikoleta, Nazarova, Dimana, Nedelchev, Lian, Nikolova, Valya, Dudev, Todor, Angelova, Silvia

“…Among a variety of diverse host molecules distinguished by specific characteristics, the cucurbit[n]uril (CB) family stands out, being widely known for the…”
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Influence of the size of Au nanoparticles on the photoinduced birefringence and diffraction efficiency of polarization holographic gratings in thin films of azopolymer nanocomposites by Berberova-Buhova, Nataliya, Nedelchev, Lian, Mateev, Georgi, Stoykova, Elena, Strijkova, Velichka, Nazarova, Dimana

“…This study is aimed to determine the influence of the size of gold (Au) nanoparticles (NP) doped in azopolymer PAZO (poly[1-[4-(3-carboxy-4-hydroxyphenylazo)…”
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Synthesis, spectroscopic and TD-DFT quantum mechanical study of azo-azomethine dyes. A laser induced trans-cis-trans photoisomerization cycle by Georgiev, Anton, Kostadinov, Anton, Ivanov, Deyan, Dimov, Deyan, Stoyanov, Simeon, Nedelchev, Lian, Nazarova, Dimana, Yancheva, Denitsa

“…This paper describes the synthesis, spectroscopic characterization and quantum mechanical calculations of three azo-azomethine dyes. The dyes were synthesized…”
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Photoinduced chiral structures in case of polarization holography with orthogonally linearly polarized beams by Nedelchev, Lian, Stoykova, Elena, Mateev, Georgi, Blagoeva, Blaga, Otsetova, Anna, Nazarova, Dimana, Hong, Keehoon, Park, Joongki

“…Polarization holography offers the possibility to register not only the intensity and phase of light, but also its polarization. When the interfering beams are…”
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Probing of the mechanical properties and monitoring of the drying process of azopolymer thin films for optical recording by Harizanova, Ruzha, Gaydarov, Valentin, Zamfirova, Galina, Stoykova, Elena, Nazarova, Dimana, Blagoeva, Blaga, Nedelchev, Lian

“…Azopolymers prepared in the form of thin films are promising candidates as media for optical recording due to their photo-anisotropic properties. The…”
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Photosensitive organic/inorganic azopolymer based nanocomposite materials with enhanced photoinduced birefringence by Nedelchev, Lian, Nazarova, Dimana, Dragostinova, Violeta

“…•Synthesis of novel composite materials by doping ZnO nanoparticles in azopolymers.•Considerable improvement of the photoresponse in these composite…”
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Evaluation of activity from binary patterns in dynamic speckle analysis by Stoykova, Elena, Kang, Hoonjong, Kim, Youngmin, Nazarova, Dimana, Nedelchev, Lian, Ivanov, Branimir, Berberova, Natalia, Mateev, Georgi

“…•Intensity-based dynamic speckle analysis allows for pointwise activity evaluation.•Transforming the speckle patterns into binary patterns by using a threshold…”
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Polarization holographic gratings with enhanced parameters recorded in azopolymer based nanocomposite materials by Nazarova, Dimana, Mateev, Georgi, Nedelchev, Lian, Stoykova, Elena, Blagoeva, Blaga, Berberova, Nataliya, Hong, Keehoon, Park, Joongki

“…We present study of the parameters of polarization holographic gratings recorded in thin films of the azopolymer PAZO (Poly[1-[4-(3-carboxy-4-hydroxyphenylazo)…”
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Intensity-based dynamic speckle method for analysis of variable-rate dynamic events by Stoykova, Elena, Nedelchev, Lian, Blagoeva, Blaga, Ivanov, Branimir, Levchenko, Mikhail, Berberova-Buhova, Nataliya, Nazarova, Dimana

“…We study efficiency of intensity-based dynamic speckle method for characterization of dynamic events which occur at variable rate in time within the temporal…”
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Noise analysis in outdoor dynamic speckle measurement by Levchenko, Mikhail, Stoykova, Elena, Ivanov, Branimir, Nedelchev, Lian, Nazarova, Dimana, Choi, Kihong, Park, Joongki

“…Dynamic speckle method is an effective tool for estimation of speed of processes. Speed distribution is encoded in a map built by statistical pointwise…”
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