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  • Your search results: "Hadjichristov, Georgi B"
Showing 1 - 20 results of 38 for search '"Hadjichristov, Georgi B"', query time: 1.25s Narrow search
  • 1
    Cover Image Journal Article
    Optical diffraction by using electrically-controlled spatially patterned nematic pentylcyanobiphenyl films under static electric field
    by Hadjichristov, Georgi B   Marinov, Yordan G Published in Molecular crystals and liquid crystals (Philadelphia, Pa. : 2003) (12.06.2016)
    “...Diffractive electro-optics of electrically-induced spatially periodic texture patterns (namely, wide-formed stationary parallel stripes) in planarly-aligned...”
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  • 2
    Cover Image Journal Article
    Orientation of sp2 carbon nanoclusters in ion‐implanted polymethylmethacrylate as revealed by polarized Raman spectroscopy
    by Ivanov, Victor G   Hadjichristov, Georgi B Published in Journal of Raman spectroscopy (01.06.2011)
    “...Raman spectroscopy is widely used for the characterization of bonding type in carbon‐based materials, including carbonized surface layer in ion‐implanted...”
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  • 3
    Cover Image Journal Article
    Electro-optically responsive composites of gold nanospheres in 5CB liquid crystal under direct current and alternating current joint action
    by Hadjichristov, Georgi B   Marinov, Yordan G   Petrov, Alexander G   Bruno, Emanuela   Marino, Lucia   Scaramuzza, Nicola Published in Journal of applied physics (28.02.2014)
    “...Direct current (DC) electro-optical (EO) control of transmitted laser beam intensity based on EO controlled coherent light scattering and diffraction by...”
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  • 4
    Cover Image Journal Article
    Electro-Optics of Nematic/Gold Nanoparticles Composites: The Effect from Dopants
    by Hadjichristov, Georgi B   Marinov, Yordan G   Petrov, Alexander G   Bruno, Emanuela   Marino, Lucia   Scaramuzza, Nicola Published in Molecular crystals and liquid crystals (Philadelphia, Pa. : 2003) (24.03.2015)
    “...We studied the change of electro-optic properties of room-temperature nematic pentylcyanobiphenyl (5CB) when this liquid crystal is mixed with a small amount...”
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  • 5
    Cover Image Journal Article
    Single-Layered PDLC for Diffractive Optics
    by Hadjichristov, Georgi B   Marinov, Yordan G   Petrov, Alexander G Published in Molecular crystals and liquid crystals (Philadelphia, Pa. : 2003) (20.07.2010)
    “...The electrically and spatially controllable coherent light diffraction by single-layered polymer-dispersed liquid crystal (PDLC) films is studied...”
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  • 6
    Cover Image Journal Article
    PEO‐PVP‐NaIO4 Ion‐Conducting Polymer Electrolyte: Inspection for Ionic Space Charge Polarization and Charge Trapping
    by Hadjichristov, Georgi B   Ivanov, Tzvetan E   Marinov, Yordan G   Koduru, Hari Krishna   Scaramuzza, Nicola Published in Physica status solidi. A, Applications and materials science (10.07.2019)
    “...Ion‐conductive solid polymer electrolytes composed from blends of poly(ethylene oxide) (PEO) and poly(vinylpyrrolidone) (PVP), as complexed with the ionic...”
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  • 7
    Cover Image Journal Article
    Interferometric pump-probe characterization of the nonlocal response of optically transparent ion implanted polymers
    by Stefanov, Ivan L   Hadjichristov, Georgi B Published in Applied surface science (01.03.2012)
    “...[Display omitted] ► The non-local response of Si ion implanted PMMA is interferometrically characterized. ► The light-absorbing ion-implanted surface layer is...”
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  • 8
    Cover Image Journal Article
    Gradient polymer-disposed liquid crystal single layer of large nematic droplets for modulation of laser light
    by Hadjichristov, Georgi B   Marinov, Yordan G   Petrov, Alexander G Published in Applied optics. Optical technology and biomedical optics (01.06.2011)
    “...The light modulating ability of gradient polymer-disposed liquid crystal (PDLC) single layer of large droplets formed by nematic E7 in UV-cured polymer NOA65...”
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  • 9
    Cover Image Journal Article
    Ion electrolytic flexible composite from poly(ethylene oxide) and E8 nematic liquid crystals
    by Hadjichristov, Georgi B   Marinov, Yordan G   Petrov, Alexander G   Koduru, Hari Krishna   Scaramuzza, Nicola
    edited by Mishonov, Todor M Varonov, Albert M
    Published in AIP conference proceedings (26.02.2019)
    “...We report an experimental study on structural, electrical and dielectric properties of electrolytic system composed of polymer poly(ethylene oxide) (PEO) and...”
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  • 10
    Cover Image Journal Article
    Graphene-nematic liquid crystal E7 nanocomposite: The effect from nanodopants
    by Hadjichristov, Georgi B   Marinov, Yordan G   Vlakhov, Todor E   Petrov, Alexander G
    edited by Mishonov, Todor M Varonov, Albert M
    Published in AIP conference proceedings (26.02.2019)
    “...We studied the change in optical, electro-optical and electrical response of liquid crystal (LC) E7 when this room-temperature nematic is mixed with a very...”
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  • 11
    Cover Image Journal Article
    Thermal properties and structure of nematic liquid crystalline polymer nanocomposite with single wall carbon nanotubes
    by Exner, Ginka K   Marinov, Yordan G   Hadjichristov, Georgi B   Shumanov, Vlado K   Prasad, S. Krishna
    edited by Mishonov, Todor M Varonov, Albert M
    Published in AIP conference proceedings (26.02.2019)
    “...Nanocomposite of single-wall carbon nanotubes and thermotropic main-chain polyester poly(2,2′-dimethyl-4,4′-dioxyazoxybenzene) was successfully designed by...”
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  • 12
    Cover Image Journal Article
    UV light enhanced confined Fréedericksz transition in photoisomerizable nematic nanocomposite with photoactive molecules of azobenzene nematic liquid crystal
    by Marinov, Yordan G   Hadjichristov, Georgi B   Petrov, Alexander G   Prasad, S. K
    edited by Mishonov, Todor M Varonov, Albert M
    Published in AIP conference proceedings (26.02.2019)
    “...Based on experimental results, we consider an important feature of the electro-optical (EO) response of nematic liquid crystal (NLC) nanocomposite doped with a...”
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  • 13
    Cover Image Journal Article
    Electrically and spatially controllable PDLC phase gratings for diffraction and modulation of laser beams
    by Hadjichristov, Georgi B   Marinov, Yordan G   Petrov, Alexander G
    edited by Öktem, Yeşim Doğan, Gülfem Süsoy Akkuş, Baki Yalçin, Latife Şahin Mutlu, R. Burcu Çakirli
    Published in AIP conference proceedings (25.03.2016)
    “...We present a study on electrically- and spatially-controllable laser beam diffraction, electrooptic (EO) phase modulation, as well as amplitude-frequency EO...”
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  • 14
    Cover Image Journal Article
    Light-stimulated electro-optics by azo-doped aerosil/7CB nanocomposites
    by Hadjichristov, Georgi B   Marinov, Yordan G   Petrov, Alexander G   Prasad, Subbarao Krishna Published in Opto-electronics review (01.05.2018)
    “...[Display omitted] •New photoactive aerosil-nematic nanocomposite for photo-controllable electrooptics.•Photo-reversible electro-optic response by trans-cis...”
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  • 15
    Cover Image Journal Article
    Ion-implanted polymethyl methacrylate beam splitter/coupler for 1.55 [micro]m applications
    by Hadjichristov, Georgi B   Stefanov, Ivan L Published in Applied optics (2004) (01.04.2010)
    “...The applicability of layers of ion-implanted polymethyl methacrylate (PMMA) for beam splitting of laser light at the telecommunications wavelength of 1.55...”
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  • 16
    Cover Image Journal Article
    Orientation of sp2 carbon nanoclusters in ion-implanted polymethylmethacrylate as revealed by polarized Raman spectroscopy: Orientation of sp2 carbon nanoclusters in ion-implanted...
    by Ivanov, Victor G   Hadjichristov, Georgi B Published in Journal of Raman spectroscopy (01.06.2011)
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  • 17
    Cover Image Journal Article
    Linear size gradient single layers of polymer-dispersed liquid crystal micrometer-sized droplets for diffractive optics
    by Hadjichristov, Georgi B   Marinov, Yordan G   Petrov, Alexander G Published in Optical materials (2009)
    “...An experimental study of coherent light diffraction by wedge-formed single layers composed of liquid crystal (LC) micro-sized droplets dispersed in a...”
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  • 18
    Cover Image Journal Article
    Ellipsometrical characterization of complex refractive index depth profile of 50 keV silicon ion implanted PMMA
    by Russev, Stoyan C   Tsutsumanova, Gichka G   Stefanov, Ivan L   Hadjichristov, Georgi B Published in Vacuum (01.08.2013)
    “...Multiangle reflection ellipsometry is applied to characterize the refractive index change of the material in the subsurface layer produced by ion implantation...”
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  • 19
    Cover Image Journal Article
    Reflectivity modification of polymethylmethacrylate by silicon ion implantation
    by Hadjichristov, Georgi B   Ivanov, Victor   Faulques, Eric Published in Applied surface science (2008)
    “...The effect of silicon ion implantation on the optical reflection of bulk polymethylmethacrylate (PMMA) was examined in the visible and near UV. A low-energy...”
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  • 20
    Cover Image Journal Article
    Single-layered PDLC films for electrically variable laser light reflection application
    by Marinov, Yordan G   Hadjichristov, Georgi B   Petrov, Alexander G Published in Optics and lasers in engineering (2010)
    “...Electrically controllable two-beam reflection of coherent light double-passed through the microscale polymer-dispersed liquid crystal (PDLC) single layer is...”
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