Browsing by Author "Yildiz, Nihat"
Now showing items 1-12 of 12
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Applied electric field effect on light-scattering birefringence of dye-doped liquid crystal molecule and consistent neural network empirical physical formula construction for scattering intensities
Polat, Omer; Yildiz, Nihat; San, Sait Eren (ELSEVIER SCIENCE BV, 2011)In this paper, we realized two objectives. Firstly, birefringence of azo and anthraquinone dye-doped nematic liquid crystal (NLC) molecules was investigated by applied electric field dependent laser scattering intensities. ... -
Consistent empirical physical formula construction for recoil energy distribution in HPGe detectors by using artificial neural networks
Akkoyun, Serkan; Yildiz, Nihat (PERGAMON-ELSEVIER SCIENCE LTD, 2012)The gamma-ray tracking technique is a highly efficient detection method in experimental nuclear structure physics. On the basis of this method, two gamma-ray tracking arrays, AGATA in Europe and GRETA in the USA, are ... -
Consistent neural network empirical physical formula constructions for nonlinear scattering intensities of dye-doped nematic liquid crystals with ultraviolet pump laser-driven Fredericksz threshold shifts
Polat, Omer; Yildiz, Nihat; Akkoyun, Serkan (ELSEVIER GMBH, URBAN & FISCHER VERLAG, 2018)Intrinsic high nonlinearity in experimentally measured laser scattering intensities poses significant difficulties in analyzing various molecular and optical properties of nematic liquid crystals (NLCs). In this respect, ... -
Construction of consistent neural network empirical physical formulas for detector counts in neutron exit channel selection
Akkoyun, Serkan; Yildiz, Nihat (ELSEVIER SCI LTD, 2013)Proper selection of neutron exit channels following heavy-ion reactions is important in nuclear structure physics. A knowledge of detector counts versus number of neutron interaction points per event can be useful in this ... -
Determination of structural, spectrometric and nonlinear optical features of 2-(4-hydroxyphenylazo)benzoic acid by experimental techniques and quantum chemical calculations
Cinar, Mehmet; Yildiz, Nihat; Karabacak, Mehmet; Kurt, Mustafa (PERGAMON-ELSEVIER SCIENCE LTD, 2013)The optimized geometrical structure, vibrational and electronic transitions, chemical shifts and nonlinear optical properties of 2-(4-hydroxyphenylazo)benzoic acid (HABA) compound were presented in this study. The ground ... -
Light-scattering determination of visco-elastic and electro-optic parameters of azo and anthraquinone dye-doped liquid crystal molecules and consistent neural network empirical physical formula construction for scattering intensities
Yildiz, Nihat; Polat, Omer; San, Sait Eren; Kaya, Nihan (ELSEVIER SCIENCE BV, 2011)In this paper, we achieved two aims. Firstly, laser light-scattering intensities in methyl red (MR) azo and disperse red (DR) anthraquinone dye-doped nematic liquid crystal (NLC) molecules were measured versus scattering ... -
Light-scattering experiments in dye-doped liquid crystals both to determine crystal parameters and to construct consistent neural network empirical physical formulas for scattering amplitudes
Yildiz, Nihat; San, Sait Eren; Polat, Omer (ELSEVIER SCIENCE BV, 2011)The aim of this paper is two-fold. Firstly, static laser light-scattering amplitude measurements in azo-dye doped nematic liquid crystals (NLCs) were made versus scattering angle, temperature and applied bias voltage. Three ... -
Neural network consistent empirical physical formula construction for density functional theory based nonlinear vibrational absorbance and intensity of 6-choloronicotinic acid molecule
Yildiz, Nihat; Karabacak, Mehmet; Kurt, Mustafa; Akkoyun, Serkan (PERGAMON-ELSEVIER SCIENCE LTD, 2012)Being directly related to the electric charge distributions in a molecule, the vibrational spectra intensities are both experimentally and theoretically important physical quantities. However, these intensities are inherently ... -
Neural network consistent empirical physical formula construction for DFT based nonlinear vibrational spectra intensities of N-(2-methylphenyl) and N-(3-methylphenyl) methanesulfonamides
Yildiz, Nihat; Karabacak, Mehmet; Kurt, Mustafa (ELSEVIER SCIENCE BV, 2011)Vibrational intensities are both experimentally measured and theoretically estimated important physical quantities which are directly related to distributions of the electric charges in a molecule. In this paper, as a novel ... -
Neural network consistent empirical physical formula construction for neutron-gamma discrimination in gamma ray tracking
Yildiz, Nihat; Akkoyun, Serkan (PERGAMON-ELSEVIER SCIENCE LTD, 2013)Gamma ray tracking is an efficient detection technique in studying exotic nuclei which lies far from beta stability line. To achieve very powerful and extraordinary resolution ability, new detectors based on gamma ray ... -
Nonlinear experimental dye-doped nematic liquid crystal optical transmission spectra estimated by neural network empirical physical formulas
Yildiz, Nihat; San, Sait Eren; Koysal, Oguz (ELSEVIER SCIENCE BV, 2010)In this paper, two complementary objectives related to optical transmission spectra of nematic liquid crystals (NLCs) were achieved. First, at room temperature, for both pure and dye (DR9) doped E7 NLCs, the 10-250W halogen ... -
A novel method to produce nonlinear empirical physical formulas for experimental nonlinear electro-optical responses of doped nematic liquid crystals: Feedforward neural network approach
Yildiz, Nihat; San, Sait Eren; Okutan, Mustafa; Kaya, Hueseyin (ELSEVIER SCIENCE BV, 2010)Among other significant obstacles, inherent nonlinearity in experimental physical response data poses severe difficulty in empirical physical formula (EPF) construction. In this paper, we applied a novel method (namely ...