Browsing by Author "Yogesh, Gaurav Kumar"

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    Effect of Different Ablation Time of ns-pulsed Laser on the Synthesis of Silver Nanoparticles in Liquid
    (Springer Science and Business Media Deutschland GmbH, 2022-09-01T00:00:00) Paroha, Prahalad Prasad; Yogesh, Gaurav Kumar; Singh, Birendra; Yadav, Kamlesh; Tewari, Anurag
    In the present report, we have studied the effect of nanosecond pulsed laser irradiation time on the particle abundance, morphology, and optical properties of silver nanoparticles (Ag-NPs). High-resolution transmission electron microscopy, selected area diffraction pattern, and UV-visible absorption spectroscopy were used to characterize morphological, structural, and optical properties of the Ag-NPs. The prolonged laser irradiation above 60�min demonstrates the melting and diffusion-induced aggregation of Ag-NPs. The statistical evaluation of various particles under different irradiation durations reveals uniform and monodispersed particle distribution for only 60�min of ablation duration. � 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
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    Effects of Interfacial Interactions and Nanoparticle Agglomeration on the Structural, Thermal, Optical, and Dielectric Properties of Polyethylene/Cr2O3 and Polyethylene/Cr2O3/CNTs Nanocomposites
    (Springer, 2022-11-22T00:00:00) Gupta, Jaya; Kumar, Ajay; Roy, Ayan; Anu; Deeksha; Kour, Pawanpreet; Singh, Ravi Pratap; Yogesh, Gaurav Kumar; Yadav, Kamlesh
    In this report, we have synthesized the binary and ternary phase nanocomposites [(polyethylene (PE)1?X/(Cr2O3)x) and (PE)1?X/(Cr2O3)X/CNTs (where X = 0,�2%, 4%, 6%, 8%, and 10%)] using the melt mixing method and studied the structural, optical, thermal and dielectric properties with an increase in Cr2O3 nanofiller concentration. Our results show an increase in interfacial interactions between Cr2O3 nanofiller and PE matrix with an increase in nanofiller concentration up to X = 6%. After that, the interactions decreased with a further increase in X because of the increase in the size of the Cr2O3 nanoparticle aggregates. Incorporating 2% carbon nanotubes (CNTs) into (PE)1?X/(Cr2O3)X nanocomposites, further decreases the interactions between the Cr2O3 nanofiller and the PE matrix. � 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.