Výsledky vyhledávání - "R. K. Swarnkar"

White light generation from HfO2 films co-doped with Eu3++ Tb3+ ions synthesized by pulsed laser ablation technique

Autor: R. K. Swarnkar, S. López-Romero, A. Aguilar-Castillo, Manuel García-Hipólito, C. Falcony, Rogelio Fragoso-Soriano, A Baez-Rodriguez, J R Aguilar-Hernandez

Publikováno v: Ceramics International. 43:355-362

In this work we investigate the luminescent properties of HfO2 films doped with Eu-3*, Tb3+ and Eu3+ + Tb3+ ions excited through photoluminescence and cathodoluminescence. These films were synthesized by the pulsed laser ablation technique and struct

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2dca20aa5ae16e36a4a70c9e8f3ea677
https://doi.org/10.1016/j.ceramint.2016.09.163

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Enhanced antibacterial activity of copper/copper oxide nanowires prepared by pulsed laser ablation in water medium

Autor: Shanthy Sundaram, Sanjay Prasad, Ram Gopal, Priyanka Dwivedi, J. K. Pandey, K. Soumya, R. K. Swarnkar

Publikováno v: Applied Physics A. 122

Copper/copper oxide nanowires (NWs) are well known for its antibacterial activity against various pathogens. In the present study, we have shown the enhanced antibacterial activity of the NWs against gram-negative bacterial strains (Escherichia coli,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2e16fe3e884c9fd778f502df50e82db7
https://doi.org/10.1007/s00339-016-0232-3

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Effect of aging on copper nanoparticles synthesized by pulsed laser ablation in water: structural and optical characterizations

Autor: R. K. Swarnkar, Ram Gopal, Subhash C. Singh

Publikováno v: Bulletin of Materials Science. 34:1363-1369

Effect of aging on copper nanoparticles synthesized by pulsed laser ablation of copper plate in water was studied. By characterization studies of the aged nanoparticles, it is found that copper nanoparticles converted into Cu@Cu2O nanostructure. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c7e3c4775dad4987712f990048e79b4d
https://doi.org/10.1007/s12034-011-0329-4

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Surfactant assisted surface studies of zinc sulfide nanoparticles

Autor: B. K. Pandey, R. K. Swarnkar, Ram Gopal, A. K. Shahi

Publikováno v: Applied Surface Science. 257:9846-9851

We report a simple soft chemical method for the synthesis of ZnS nanoparticles using varying concentration of cationic surfactant CTAB and examine its surface properties. Powder X-ray diffraction, UV–vis spectroscopy, photoluminescence spectroscopy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b5aff9bac6d6aa9991e941b019c575a6
https://doi.org/10.1016/j.apsusc.2011.06.046

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Zn/ZnO core/shell nanoparticles synthesized by laser ablation in aqueous environment: Optical and structural characterizations

Autor: R. K. Swarnkar, Subhash C. Singh, Ram Gopal

Publikováno v: Bulletin of Materials Science. 33:21-26

Zn/ZnO core/shell nanoparticles are synthesized by pulsed laser ablation (PLA) of Zn metal plate in the aqueous environment of sodium dodacyl sulfate (SDS). Solution of nanoparticles is found stable in the colloidal form for a long time, and is chara

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c2485334040c18a7ddd5673cb7a1506d
https://doi.org/10.1007/s12034-010-0003-2

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Laser ablative approach for the synthesis of cadmium hydroxide–oxide nanocomposite

Autor: R. K. Swarnkar, Ram Gopal, Subhash C. Singh

Publikováno v: Journal of Nanoparticle Research. 11:1831-1838

Cadmium hydroxide/oxide nanocomposite material is synthesized by pulsed laser ablation of cadmium metal in double distilled water. As-synthesized cadmium hydroxide/oxide particles transforms into pure oxide after annealing at 350 °C for 9 h. As-obta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d5755a77f3d13b53f0e856aae2d9b1e3
https://doi.org/10.1007/s11051-009-9696-9

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Silver nanoparticles synthesized by pulsed laser ablation: as a potent antibacterial agent for human enteropathogenic gram-positive and gram-negative bacterial strains

Autor: J. K. Pandey, Manish Kumar Singh, Priyanka Dwivedi, K. Soumya, Shanthy Sundaram, Ram Gopal, R. K. Swarnkar

Publikováno v: Applied biochemistry and biotechnology. 174(3)

Present investigation deals with the study, to quantify the antibacterial property of silver nanoparticles (SNPs), synthesized by pulsed laser ablation (PLA) in aqueous media, on some human enteropathogenic gram-positive and gram-negative bacterial s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2b572e7a18f8aaa96c6c4fe79f62f72
https://pubmed.ncbi.nlm.nih.gov/24801405

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