نتایج جستجو برای: لومینی سنس luminescence

تعداد نتایج: 12695  

2006
Allison R. McCarn Erin M. Englert Gary A. Williams

In order to study the effect of viscosity on bubbles in a cavitating fluid, the properties of laser-induced bubbles and the resulting luminescence pulses are examined for various glycerol-water mixtures over 1-8 bars of pressure. Bubbles are generated by a Nd:YAG laser, with the bubble radius monitored by a laser-beam photodiode system and the luminescence structure measured by fast photomultip...

زندمقدم, حامد, باوی, هدا , محبوبی, اسدا... , موسوی حرمی, رضا ,

For identification and differentiation of different types of dolomites of the Padeha Formation, three stratigraphic sections in the northern and southern Tabas Block, with the maximum amount of dolomite, were selected and sampled. Based on petrographic evidence and geochemical data, three types of dolomite were identified, including primary (PD), replacement (RD) and vein and pore filling (VD) ...

2006
Youtarou Takahashi Tohru Suemoto Seiji Oguri Jun Takeda

The excited state dynamics of 1,3,5-trithia-2,4,6-triazapentalenyl TTTA was investigated by using femtosecond luminescence spectroscopy. The luminescence was measured in low and high temperature phases of TTTA between 1.42 and 1.2 eV. Only in the low temperature phase, we observed a broad luminescence band with a decay time constant of 1.6 ps in all energy range. This decay time constant sugges...

Journal: :Optics express 2009
V Passias N V Valappil Z Shi L Deych A A Lisyansky V M Menon

An active one-dimensional Fibonacci photonic quasi-crystal is realized via spin coating. Luminescence properties of an organic dye embedded in the quasi-crystal are studied experimentally and compared to theoretical simulations. The luminescence occurs via the pseudo-bandedge mode and follows the dispersion properties of the Fibonacci crystal. Time resolved luminescence measurement of the activ...

Journal: :Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 2008
Lyjo K Joseph K R Dayas Soniya Damodar Bindu Krishnan K Krishnankutty V P N Nampoori P Radhakrishnan

The laser-induced luminescence studies of the rare earth titanates (R2Ti2O7) (R=La, Nd and Gd) using 355 nm radiation from an Nd:YAG laser are presented. These samples with submicron or nanometer size are prepared by the self-propagating high temperature synthesis (SHS) method and there is no known fluorescence shown by these rare earths in the visible region. Hence, the luminescence transition...

Journal: :Dalton transactions 2015
Rik Van Deun Micheline D'hooge Aleksandar Savic Isabel Van Driessche Kristof Van Hecke Anna M Kaczmarek

Nano-sized particles of monoclinic-LaVO4 were prepared in a short reaction time of 30 minutes by employing a microwave assisted hydrothermal synthesis in the presence of glycerol, which was used both as a solvent and structure-directing agent. The tetragonal-LaVO4 is known to show strong luminescence properties when doped with Ln(3+), whereas the monoclinic-LaVO4 is usually considered not suita...

2018
Gustavo G. Parra Lucimara P. Ferreira Pablo J. Gonçalves Svetlana V. Sizova Vladimir A. Oleinikov Vladimir N. Morozov Vladimir A. Kuzmin Iouri E. Borissevitch

Interaction between porphyrins and quantum dots (QD) via energy and/or charge transfer is usually accompanied by reduction of the QD luminescence intensity and lifetime. However, for CdSe/ZnS-Cys QD water solutions, kept at 276 K during 3 months (aged QD), the significant increase in the luminescence intensity at the addition of meso-tetrakis (p-sulfonato-phenyl) porphyrin (TPPS4) has been obse...

2017
Yasushi Yumura Teppei Takeshima Takashi Kawahara Hiroyuki Sanjo Shin-No-Suke Kuroda Takuo Asai Kohei Mori Takuya Kondou Hiroji Uemura Akira Iwasaki

Purpose To determine whether reactive oxygen species (ROS) in semen samples could be measured with the Monolight™ 3010 Luminometer. Methods Using the Monolight™ 3010 Luminometer, the ROS was measured in the unprocessed semen samples of infertile male patients, as well as the luminescence of 190 semen samples. The samples were classified as "luminescence-detectable" (n = 89) and "luminescence-...

2015
B. S. Panigrahi Indira Gandhi

Lanthanide luminescence has wide applicability in both solid and solution state luminescence studies. The process of ligand sensitized luminescence has not only enhanced the lanthanide fluorescence but also found wider applicability in the field of immunoassay and drug delivery apart from probing the site of binding or complexation. The lanthanide fluorescence enhancement not only depends on th...

In this article, organic light emitting diode with the two structures of ITO / PEDOT: PSS /PVK/Alq3/PBD/Al and ITO/PEDOT: PSS/PVK: Alq3: PBD/Alwith different concentrations were fabricated. The effects of concentration of Alq3 complex on the characteristics of diodes, which were made, were studied. Layers with the same weight percentages PVK, PBD and different wt. %Alq3 by spin coating on PEDOT...

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