scholarly journals Detection of vasodilator drugs through microwave spectroscopy of Au NP colorimetric probes using a microwave metallic photonic crystal-inspired resonant probe

RSC Advances ◽  
2017 ◽  
Vol 7 (49) ◽  
pp. 30784-30791 ◽  
Author(s):  
Rahul Yadav ◽  
Piyush N. Patel ◽  
V. N. Lad
Keyword(s):  
Gold Nanoparticles ◽  
Photonic Crystal ◽  
Low Cost ◽  
Microwave Spectroscopy ◽  
Analytical Technique ◽  
Vasodilator Drugs ◽  
Metallic Photonic Crystal

A low-cost, time-effective and easy-to-use novel analytical technique incorporating microwave spectroscopy of unmodified gold nanoparticles for the detection of selected vasodilator drugs.

scholarly journals Thermal emission and design in 2D-periodic metallic photonic crystal slabs

2006 ◽  
Vol 14 (19) ◽  
pp. 8785 ◽  
Author(s):  
David L. C. Chan ◽  
Marin Soljačić ◽  
J. D. Joannopoulos
Keyword(s):  
Photonic Crystal ◽  
Thermal Emission ◽  
Photonic Crystal Slabs ◽  
Metallic Photonic Crystal

Application of nanomaterials in microbial-cell biosensor constructions

2015 ◽  
Vol 69 (1) ◽  
Author(s):  
Jana Šefčovičová ◽  
Jan Tkac
Keyword(s):  
Carbon Nanotubes ◽  
Gold Nanoparticles ◽  
Rapid Detection ◽  
Food Industry ◽  
Low Cost ◽  
Microbial Cell ◽  
Direct Connection ◽  
Qualitative Detection ◽  
Analytical Tools ◽  
Cell Biosensor

AbstractMicrobial cell biosensors, where cells are in direct connection with a transducer enabling quantitative and qualitative detection of an analyte, are very promising analytical tools applied mainly for assays in the environmental field, food industry or biomedicine. Microbial cell biosensors are an excellent alternative to conventional analytical methods due to their specificity, rapid detection and low cost of analysis. Nowadays, nanomaterials are often used in the construction of biosensors to improve their sensitivity and stability. In this review, the combination of microbial and other individual cells with different nanomaterials (carbon nanotubes, graphene, gold nanoparticles, etc.) for the construction of biosensors is described and their applications are provided as well.

Modal analysis of guiding structures patterned in a metallic photonic crystal

1998 ◽  
Vol 73 (19) ◽  
pp. 2712-2714 ◽  
Author(s):  
J. Danglot ◽  
J. Carbonell ◽  
M. Fernandez ◽  
O. Vanbésien ◽  
D. Lippens
Keyword(s):  
Photonic Crystal ◽  
Modal Analysis ◽  
Metallic Photonic Crystal

scholarly journals Green Synthesis of Silver and Gold Nanoparticles via Sargassum serratifolium Extract for Catalytic Reduction of Organic Dyes

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 347
Author(s):  
Beomjin Kim ◽  
Woo Chang Song ◽  
Sun Young Park ◽  
Geuntae Park
Keyword(s):  
Gold Nanoparticles ◽  
Green Synthesis ◽  
Catalytic Reduction ◽  
Organic Dyes ◽  
Low Cost ◽  
Inorganic Nanoparticles ◽  
X Ray ◽  
Selected Area Electron Diffraction ◽  
Transmission Electron ◽  
Sargassum Serratifolium

The green synthesis of inorganic nanoparticles (NPs) using bio-materials has attained enormous attention in recent years due to its simple, eco-friendly, low-cost and non-toxic nature. In this work, silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) were synthesized by the marine algae extract, Sargassum serratifolium (SS). The characteristic studies of bio-synthesized SS-AgNPs and SS-AuNPs were carried out by using ultraviolet–visible (UV–Vis) absorption spectroscopy, dynamic light scattering (DLS), high-resolution transmission electron microscope (HR-TEM), selected area electron diffraction (SAED), energy-dispersive X-ray spectroscopy (EDX), X-ray powder diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). Phytochemicals in the algae extract, such as meroterpenoids, acted as a capping agent for the NPs’ growth. The synthesized Ag and Au NPs were found to have important catalytic activity for the degradation of organic dyes, including methylene blue, rhodamine B and methyl orange. The reduction of dyes by SS-AgNPs and -AuNPs followed the pseudo-first order kinetics.

scholarly journals Phase-resolved pulse propagation through metallic photonic crystal slabs: plasmonic slow light

2017 ◽  
Vol 375 (2090) ◽  
pp. 20160065 ◽  
Author(s):  
Anja Schönhardt ◽  
Dietmar Nau ◽  
Christina Bauer ◽  
André Christ ◽  
Hedi Gräbeldinger ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Photonic Crystal ◽  
Slow Light ◽  
Filter Design ◽  
Dispersion Compensation ◽  
Transverse Magnetic ◽  
Spectral Phase ◽  
Group Delay Dispersion ◽  
Transmission Amplitude ◽  
Metallic Photonic Crystal

We characterized the electromagnetic field of ultra-short laser pulses after propagation through metallic photonic crystal structures featuring photonic and plasmonic resonances. The complete pulse information, i.e. the envelope and phase of the electromagnetic field, was measured using the technique of cross-correlation frequency resolved optical gating. In good agreement, measurements and scattering matrix simulations show a dispersive behaviour of the spectral phase at the position of the resonances. Asymmetric Fano-type resonances go along with asymmetric phase characteristics. Furthermore, the spectral phase is used to calculate the dispersion of the sample and possible applications in dispersion compensation are investigated. Group refractive indices of 700 and 70 and group delay dispersion values of 90 000 fs 2 and 5000 fs 2 are achieved in transverse electric and transverse magnetic polarization, respectively. The behaviour of extinction and spectral phase can be understood from an intuitive model using the complex transmission amplitude. An associated depiction in the complex plane is a useful approach in this context. This method promises to be valuable also in photonic crystal and filter design, for example, with regards to the symmetrization of the resonances. This article is part of the themed issue ‘New horizons for nanophotonics’.

scholarly journals Optical Properties Study in Qusai Three Dimensional Aluminum Metallic Photonic Crystal

2007 ◽  
Vol 61 ◽  
pp. 1256-1260
Author(s):  
S-C Wu ◽  
Y-J Lee ◽  
K-H Chang ◽  
S-Y Lin ◽  
A-T Cho ◽  
...  
Keyword(s):  
Optical Properties ◽  
Photonic Crystal ◽  
Three Dimensional ◽  
Metallic Photonic Crystal
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