Search Results - "Petriashvili, G."

Reversible LED controlled optical activity of a cholesteric liquid crystal layer by Chanishvili, A., Petriashvili, G., Ponjavidze, N., Zurabishvili, Ts

“…A thin layer of the photosensitive cholesteric liquid crystal possessing a high value of the optical activity is studied. Reversible change in the optical…”
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Lasing in Dye-Doped Cholesteric Liquid Crystals: Two New Tuning Strategies by Chanishvili, A., Chilaya, G., Petriashvili, G., Barberi, R., Bartolino, R., Cipparrone, G., Mazzulla, A., Oriol, L.

“…Tuning of a dye‐doped cholesteric liquid crystal mirrorless laser in the violet– ultraviolet wavelength range is achieved using two different strategies for…”
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Wide band gap materials as a new tuning strategy for dye doped cholesteric liquid crystals laser by Petriashvili, G, Matranga, M A, De Santo, M P, Chilaya, G, Barberi, R

“…A new tuning strategy for mirror-less liquid crystals laser is presented. A three layer cell is prepared with two cholesteric layers sandwiching a layer…”
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Reversible Tuning of Lasing in Cholesteric Liquid Crystals Controlled by Light-Emitting Diodes by Chilaya, G., Chanishvili, A., Petriashvili, G., Barberi, R., Bartolino, R., Cipparrone, G., Mazzulla, A., Shibaev, P. V.

“…The lasing wavelength of dye‐doped cholesteric liquid‐crystal lasers is optically tuned by the reversible photoisomerization of the azo‐ or azoxy‐ nematic…”
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Possibility of using near infrared irradiation for early cancer diagnosis by Partsvania, B., Petriashvili, G., Fonjavidze, N.

“…Abstract Penetration of near infrared radiation (NIR) through biological tissues (human wrist, muscle and skin of hen, muscle of mollusk) was studied. The…”
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Electrically Controlled 1D and 2D Cholesteric Liquid Crystal Gratings by Hamdi, R., Petriashvili, G., De Santo, M. P., Lombardo, G., Barberi, R.

“…Electrically induced and controlled gratings in large pitch cholesteric liquid crystals were investigated. Specially selected surface anchoring conditions…”
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Lasing Stability Enhancement in Dye Doped Cholesteric Liquid Crystals by De Santo, M. P., Matranga, M. A., Ciuchi, F., Petriashvili, G., Barberi, R.

“…Lasing from dye doped cholesteric liquid crystal mixture was experimentally observed several years ago but in despite of all the efforts that have been done so…”
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Novel UV Sensor Based on a Liquid Crystalline Mixture Containing a Photoluminescent Dye by Petriashvili, G., Chanishvili, A., Chilaya, G., Matranga, M. A., De Santo, M. P., Barberi, R.

“…The Erythemal Response Spectrum is a scientific expression that describes the skin sensitivity to the ultraviolet radiation. A long exposure to UV radiation…”
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Frequency Tunable Lasing in a Three Layer Cholesteric Liquid Crystal Cell by Matranga, M. A., De Santo, M. P., Petriashvili, G., Chanishvili, A., Chilaya, G., Barberi, R.

“…Novel combinations of liquid crystalline materials for liquid crystals lasers tuning are presented. The cell is based on a three layer system, with two…”
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Chemical Synthesis of Cobalt Nanowires in an External Magnetic Field and Their Characterization by NMR by Mamniashvili, G. I., Gegechkori, T. O., Zedginidze, T. I., Petriashvili, T. G., Janjalia, M. V., Gavasheli, T. A., Kezerashvili, R. Ya

“…The possibility of measuring the degree of fixing (pinning force) of domain walls in cobalt nanowires by the NMR spin-echo method under the action of an…”
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Lasing in Three Layer Systems Consisting of Cholesteric Liquid Crystals and Dye Solution by Chilaya, G., Chanishvili, A., Petriashvili, G., Barberi, R., Cipparrone, G., Mazzulla, A., De Santo, M. P., Sellame, H., Matranga, M. A.

“…We have investigated defect mode lasing in a multilayer system consisting of a dye doped isotropic solvent sandwiched between two cholesteric liquid crystal…”
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Provitamin D 2 and Provitamin D 3 Photo Transformations in Cholesteric Liquid Crystal Mixtures Induced by UV Radiation by Chilaya, G., Petriashvili, G., Chanishvili, A., Terenetskaya, I., Kireeva, N., Lisetski, L.

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Investigation of the pinning and mobility of domain walls in cobalt micro- and nanowires by the nuclear spin echo method under the additional influence of a magnetic video pulse by Gavasheli, T.A., Mamniashvili, G.I., Shermadini, Z.G., Zedginidze, T.I., Petriashvili, T.G., Gegeckori, T.O., Janjalia, M.V.

“…The dynamics of domain walls in magnetic cobalt microwires synthesized using electroless technology was studied by the nuclear spin echo method of 59Co nuclei…”
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Color Change Effect Based on Provitamin D Phototransformation in Cholesteric Liquid Crystalline Mixtures by Aronishidze, M., Chanishvili, A., Chilaya, G., Petriashvili, G., Tavzarashvili, S., Lisetski, L., Gvozdovskyy, I., Terenetskaya, I.

“…It has been shown that UV radiation can produce observable color changes in induced cholesteric systems (nematic + optically active dopant) additionally doped…”
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Polarity sensitive bistable color effect in cholesteric liquid crystals with an asymmetric polymer network by Sikharulidze, D., Tchanishvili, A., Petriashvili, G., Scaramuzza, N., Barberi, R., Bartolino, R.

“…A polarity sensitive bistable color effect has been observed in cholesteric liquid crystal—polymer mixtures where a gradient of the polymer network density is…”
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Early repolarization as a predictor of premature ventricular beats by Matoshvili, Z T, Petriashvili, Sh G, Archadze, A T, Azaladze, I G

“…Early repolarization pattern (ERP) is a common ECG variant, characterized by J point elevation manifested either as terminal QRS slurring (the transition from…”
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Widely tunable ultraviolet-visible liquid crystal laser by Chanishvili, Andro, Chilaya, Guram, Petriashvili, Gia, Barberi, Riccardo, Bartolino, Roberto, Cipparrone, Gabriella, Mazzulla, Alfredo, Gimenez, Raquel, Oriol, Luis, Pinol, Milagros

“…Quasicontinuous tuning of a dye doped cholesteric liquid crystal (CLC) mirrorless laser in the ultraviolet-visible wavelength range is demonstrated using a…”
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Modeling of calmodulin-mediated processes in tissues using calmodulin-functionalized gold nanoparticles and fluorescent dyes by Chubinidze, K., Partsvania, B., Khuskivadze, A., Burnadze, P., Petriashvili, G., Dzidziguri, D., Mukbaniani, O.

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Phototunable lasing in dye-doped cholesteric liquid crystals by Chanishvili, Andro, Chilaya, Guram, Petriashvili, Gia, Barberi, Riccardo, Bartolino, Roberto, Cipparrone, Gabriella, Mazzulla, Alfredo, Oriol, Luis

“…In this letter, we report the results of phototunable lasing in dye-doped cholesteric liquid crystals (DD–CLC). Photoexcitation of DD–CLC films gives rise to…”
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Light Induced Effects In Cholesteric Mixtures With A Photosensitive Nematic Host by Chanishvili, A., Chilaya, G., Petriashvili, G., Sikharulidze, D.

“…For the first time the photooptic effect in induced cholesteric mixtures using photosensitive nematic host has been observed. The changes of the pitch (color)…”
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