Search Results - "Sardar, D K"

Stokes emission in GdF₃:Nd³⁺ nanoparticles for bioimaging probes by Pokhrel, M, Mimun, L C, Yust, B, Kumar, G A, Dhanale, A, Tang, L, Sardar, D K

“…There is increasing interest in rare earth (RE) doped nanoparticles (NPs) due to their sharp absorption and photoluminescence (PL) in the near infrared (NIR)…”
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Reverse microemulsion synthesis of mixed α and β phase NaYF4:Yb,Er nanoparticles: calcination induced phase formation, morphology, and upconversion emission by Gunaseelan, M., Yamini, S., Kumar, G. A., Sardar, D. K., Senthilselvan, J.

“…A novel “water-in-oil” type reverse microemulsion assisted synthesis detail on the formation of mixed cubic and hexagonal (α + β) phase NaYF 4 :Yb,Er…”
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Synthesis and spectroscopy of color tunable Y2O2S:Yb3+,Er3+ phosphors with intense emission by KUMAR, G. A, POKHREL, M, MARTINEZ, A, DENNIS, R. C, VILLEGAS, I. L, SARDAR, D. K

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Synthesis of Superparamagnetic Zinc Ferrite Encased Fluorapatite Nanoparticles and Its Cytotoxicity Effects on MG-63 Cells by Karthi, S., Vivek, P., Karthickraja, D., Kumar, G. A., Dannangoda, C., Martirosyan, K. S., Sardar, D. K., Girija, E. K.

“…Zinc ferrite (ZnFe 2 O 4 ) nanoparticles encased fluorapatite (FAP) nanorods was successfully synthesized through hydrothermal method for biomedical…”
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Performance evaluation of Laser Induced Breakdown Spectroscopy (LIBS) for quantitative analysis of rare earth elements in phosphate glasses by Devangad, Praveen, Unnikrishnan, V.K., Nayak, Rajesh, Tamboli, M.M., Muhammed Shameem, K.M., Santhosh, C., Kumar, G.A., Sardar, D.K.

“…•Rare earth (Sm, Tm and Yb) doped phosphate glasses are quantitatively analyzed by LIBS for the first time.•Regression coefficient (R2) of 0.99 is achieved for…”
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Calibration based laser-induced breakdown spectroscopy (LIBS) for quantitative analysis of doped rare earth elements in phosphors by Unnikrishnan, V.K., Nayak, Rajesh, Devangad, Praveen, Tamboli, M.M., Santhosh, C., Kumar, G.A., Sardar, D.K.

“…Using laser-induced breakdown spectroscopy (LIBS), quantitative analysis of doped rare earth elements (Lanthanum (La) and Neodymium (Nd)) in phosphors has been…”
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Optical characterization of melanin by Sardar, D K, Mayo, M L, Glickman, R D

“…The optical properties of melanin have been characterized for a number of laser wavelengths in the visible region. The index of refraction of melanin is…”
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Fluorapatite coated iron oxide nanostructure for biomedical applications by Karthi, S., Kumar, G.A., Sardar, D.K., Dannangoda, G.C., Martirosyan, K.S., Girija, E.K.

“…In the present work, surface modification of iron oxide (Fe3O4) nanoparticles with biocompatible fluorapatite (FAP) coating achieved by a simple method and…”
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Inter-Stark Energy Levels and Effects of Temperature on Sharp Emission Lines of Nd3+ in LiYF4 by Sardar, D. K., Yow, R. M.

“…The inter‐Stark components of the 4I9/2 and 4I11/2 manifolds have been characterized using the room‐temperature fluorescence spectra for the 4F3/2 → 4I9/2 and…”
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Fabrication of Nd3+ and Yb3+ doped NIR emitting nano fluorescent probe: A candidate for bioimaging applications by Karthickraja, D., Kumar, G.A., Sardar, D.K., Karthi, S., Dannangoda, G.C., Martirosyan, K.S., Prasath, M., Gowri, M., Girija, E.K.

“…The intentional design of rare earth doped luminescent architecture exhibits unique optical properties and it can be considered as a promising and potential…”
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Specific features of magneto-optical spectra of Tb3Ga5O12 by Valiev, U. V., Gruber, J. B., Sardar, D. K., Mukhammadiev, A. K., Rakhimov, Sh. A., Sokolov, V. Yu

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Spectroscopic characterizations of Er doped LaPO4 submicron phosphors prepared by homogeneous precipitation method by Saltmarsh, N., Kumar, G.A., Kailasnath, M., Shenoy, Vittal, Santhosh, C., Sardar, D.K.

“…•Trivalent Er doped LaPO4 submicron phosphors are successfully synthesized by homogeneous precipitation method.•Detailed spectroscopic characteristics were…”
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Zeeman effect and stark splitting of the electronic states of the rare-earth ion in the paramagnetic terbium garnets Tb3Ga5O12 and Tb3Al5O12 by Valiev, U. V., Gruber, J. B., Sardar, D. K., Zandi, B., Kachur, I. S., Mukhammadiev, A. K., Piryatinskaya, V. G., Sokolov, V. Yu, Edelman, I. S.

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Optical Properties of Whole Blood by Sardar, D.K., Levy, L.B.

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Synthesis and characterization of Nd3+: Yb3+ co-doped near infrared sensitive fluorapatite nanoparticles as a bioimaging probe by Karthi, S., Kumar, G.A., Sardar, D.K., Santhosh, C., Girija, E.K.

“…Trivalent Nd and Yb co-doped rod shaped hexagonal phase fluorapatite (FAP) nanoparticles of length and width about 32 and 13 nm, respectively were prepared by…”
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Absolute quantum yield measurements in Yb/Ho doped M2O2S (M=Y, Gd, La) upconversion phosphor by Kumar, G.A., Pokhrel, M., Sardar, D.K.

“…Using the integrating sphere technique the absolute quantum yield measurements of the visible emission bands at 550, 650 and 750nm in Yb/Ho doped M2O2S (M=Y,…”
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Optical absorption of untreated and laser-irradiated tissues by SARDAR, D. K, ZAPATA, B. M, HOWARD, C. H

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Microwave assisted synthesis and characterizations of near infrared emitting Yb/Er doped fluorapatite nanoparticles by Karthi, S., Kumar, G. Suresh, Kumar, G.A., Sardar, D.K., Santhosh, C., Girija, E.K.

“…Trivalent Yb and Er doped fluoroapatite nanoparticles were prepared by a microwave assisted wet precipitation method using calcium nitrate tetrahydrate,…”
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Comment on “structural and NIR to visible upconversion properties of Er3+-doped LaPO4 phosphors” by Saltmarsh, N., Kumar, G.A., Dannangoda, Chamath, Martirosyan, Karen S., Rightsell, C., Sardar, D.K.

“…Here we present a systematic investigation of the upconversion spectral properties of Er3+ doped in LaPO4, BaZrO3, Y2O3 and Yb3+/Er3+ doped in Gd2O2S, La2O2S,…”
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Ab initio, crystal field and experimental spectroscopic studies of pure and Ni2+-doped KZnF3 crystals by Brik, M.G., Kumar, G.A., Sardar, D.K.

“…Pure and Ni2+ doped KZnF3 single crystals were studied using the combination of the DFT-based ab initio methods, crystal field theory and experimental…”
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