Plasmonic Effects in Noble Metal-liquid Metal Based Nanoparticles
Akanksha Bhardwaj,
Suram Singh Verma
Issue:
Volume 5, Issue 3, September 2019
Pages:
27-33
Received:
26 September 2019
Accepted:
21 October 2019
Published:
25 October 2019
Abstract: In the era of flexible and foldable devices, liquid metals emerge as a champion because they are being liquid at or near room temperature in addition to having high electrical and thermal conductivities. Plasmonic resonance occurs when conduction band electrons on metal nanoparticle surface collectively oscillates with same frequency as that irradiated light. This plasmonic resonance has attracted great attention because of large electromagnetic field enhancements near metal nanoparticle and the regulating resonance wavelength with change in material, size, shape and surrounding medium of metallic nanoparticle. Incorporation of liquid metal nanoparticles in plasmonics provides unique properties towards sensing (heart rate monitors etc.) which can become wearable. So, developing liquid metal based low-cost and large-scale plasmonic nanostructures may provide more optical efficiencies, fast kinetics, low temperature processing, versatility, easy embedding in structures and stretchy devices. Present work focuses on literature review highlighting the study of optical properties (absorption and scattering efficiencies, LSPR tunability, Figure of Merit (FOM) and Refractive Index Sensitivity (RIS)) of noble metal-liquid metal nanostructures and future scope of the field. Simulations can be performed on the basis of Mie Theory for spherical nanoparticles and by DDA/FDTD method for non-spherical particles or arrays. The results can help to optimize the plasmonic nanostructures of suitable material, size and shape according to the need of application in particular region of EM spectrum.
Abstract: In the era of flexible and foldable devices, liquid metals emerge as a champion because they are being liquid at or near room temperature in addition to having high electrical and thermal conductivities. Plasmonic resonance occurs when conduction band electrons on metal nanoparticle surface collectively oscillates with same frequency as that irradi...
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Anti-plasmodial Activity of a Non-protein Amino Acid Taurine
Thavamani Rajapandi,
Kazim Ackie,
Kavita Rajeev Hegde
Issue:
Volume 5, Issue 3, September 2019
Pages:
34-37
Received:
26 September 2019
Accepted:
15 October 2019
Published:
25 October 2019
Abstract: Human malaria is caused by a few selected species of the genus Plasmodium. Among these, Plasmodium falciparum causes almost 90% of malaria-related mortality. Novel anti-malarial compounds are hence required to fight the anti-malarial drug-resistant P. falciparum parasites. The objective of this study is to analyze the effectiveness of Taurine (2-aminoethane sulfonic acid), a non-protein amino acid, in preventing the growth and development of both asexual and sexual stages of in vitro cultured P. falciparum parasites. We found that 200 mM concentration of Taurine almost completely (>80%) inhibited the propagation of asexual stages of P. falciparum. In contrast, it did not have any inhibitory activity against the maturation of sexual or gametocyte stages. However, the gametocytogenesis or the conversion of asexual to stage I gametocyte was blocked partially by this compound. The results suggest that derivatives of Taurine /2-aminoethane sulfonic acid could be considered to further improve the effectiveness of Taurine as an antimalarial compound against both the asexual and early sexual stages of P. falciparum.
Abstract: Human malaria is caused by a few selected species of the genus Plasmodium. Among these, Plasmodium falciparum causes almost 90% of malaria-related mortality. Novel anti-malarial compounds are hence required to fight the anti-malarial drug-resistant P. falciparum parasites. The objective of this study is to analyze the effectiveness of Taurine (2-am...
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