Structural, optical and dielectric studies of Ag nanoparticles decorated by herceptin

Jafarzadeh, Naser; Nadafan, Marzieh; Malekfar, Rasoul; Shakeri‐Zadeh, Ali; Meidanchi, Alireza; Eynali, Samira

doi:10.1016/j.physe.2019.113562

Cited by 24 publications

(9 citation statements)

References 45 publications

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“…The linear response function of the (5, 5) SWBNNT and SWCNT structures to electromagnetic radiation can be explained in terms of the dielectric function [23]:…”

Section: Dielectric Constantmentioning

confidence: 99%

Computational Studies of the Excitonic and Optical Properties of Armchair SWCNT and SWBNNT for Optoelectronics Applications

Itas

Suleiman²,

Ndikilar³

et al. 2022

Crystals

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In this study, the optical refractive constants of the (5, 5) SWBNNT and (5, 5) SWCNT systems were calculated in both parallel and perpendicular directions of the tube axis by using Quantum ESPRESSO and YAMBO code. It also extended the optical behaviors of (5, 5) SWCNT and (5, 5) SWBNNT to both perpendicular and parallel directions instead of the parallel directions reported in the literature. It also looked at the effects of the diameter of the nanotube on the optical properties instead of chiral angles. From our results, the best optical reflection was found for (5, 5) SWBNNT, while the best optical refraction was found with (5, 5) SWCNT. It was observed that the SWCNT demonstrates refraction in both parallel and perpendicular directions, while (5, 5) SWBNNT shows perfect absorption in perpendicular direction. These new features that appeared for both nanotubes in perpendicular directions were due to new optical band gaps, which appear in the perpendicular directions to both nanotubes’ axis. The electron energy loss (EEL) spectrum of SWBNNT revealed the prominent π- and π + δ- Plasmon peaks, which demonstrates themselves in the reflectivity spectrum. Furthermore, little effect of diameter was observed for the perpendicular direction to both nanotubes’ axis; as such, the combined properties of (5, 5) SWBNNT and (5, 5) SWCNT materials/systems for transmitting light offer great potential for applications in mobile phone touch screens and mobile network antennas. In addition, the studies of optical properties in the perpendicular axis will help bring ultra-small nanotubes such as SWCNT and SWBNNT to the applications of next-generation nanotechnology.

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“…The linear response function of the (5, 5) SWBNNT and SWCNT structures to electromagnetic radiation can be explained in terms of the dielectric function [23]:…”

Section: Dielectric Constantmentioning

confidence: 99%

Computational Studies of the Excitonic and Optical Properties of Armchair SWCNT and SWBNNT for Optoelectronics Applications

Itas

Suleiman²,

Ndikilar³

et al. 2022

Crystals

View full text Add to dashboard Cite

show abstract

“…For further analysis, based on the application of Mie's theory, determines the particle sizes from the values of UV-vis absorption spectra [37] , because the absorption of light depends on particles' size, shape, aggregation, and so on. The particle size of the AgNPs is larger, the position of the absorption peak will have a redshift, on the contrary, the absorption peak will have a blue shift [38] , and the half-height of the absorption peak is narrower, the distribution of the nanoparticles is more concentrated [39] . Fig.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of silver nanoparticles using Eucommia ulmoides extract and their potential biological function in cosmetics

Kan

Zhu

et al. 2022

Heliyon

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“…In the previous study, in brief, suspensions were synthesized and characterized by UV–Vis spectrophotometer to show the surface plasmon absorption at 520 and 705 nm to confirm NPs. The size and morphology of NPs were confirmed by TEM [ 19 ]. The mean diameter of AuNPs and FA‐Cys‐AuNPs was 13 and 15 nm, respectively.…”

Section: Resultsmentioning

confidence: 99%

Observation of targeted gold nanoparticles in nasopharyngeal tumour nude mice model through dual‐energy computed tomography

Khademi

Shakeri‐Zadeh

Solgi

et al. 2021

IET Nanobiotechnology

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This study was performed to specify the efficiency of imaging nanoparticle concentration as contrast media in dual-energy computed tomography (DECT). Gold nanoparticles (AuNPs) and gold nanoparticles-conjugated folic acid through cysteamine (FA-Cya-AuNPs) were both considered as contrast agents. Characterization of NPs was performed using Dynamic Light Scattering (DLS) and zeta potential. The hemocompatibility of NPs was confirmed by different blood parameters such as white blood cell, red cell distribution width, hemoglobin, lymphocytes counts and haemolysis assay. DECT algorithm was confirmed using calibration phantom at different concentrations of NPs and tube potentials (80 and 140 kVp). Then, DECT was used to quantify the concentration of both AuNPs and FA-Cys-AuNPs in human nasopharyngeal cancer cells. Mice were injected with non-targeted AuNPs and targeted AuNps at a concentration of 3 � 10 3 μg/ml. Then, they were scanned with different tube potentials. The concentration of nanoparticles in the various organs of nude mice was measured through DECT imaging and inductively coupled plasma mass spectrometry (ICP-MS) analysis. The results of DECT images were compared with ICP-MS analysis and indicated that they were approximately similar. In sum, FA-Cys-AuNPs can be a proper candidate for targeted contrast media in DECT molecular scanning of human nasopharyngeal tumours. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Structural, optical and dielectric studies of Ag nanoparticles decorated by herceptin

Cited by 24 publications

References 45 publications

Computational Studies of the Excitonic and Optical Properties of Armchair SWCNT and SWBNNT for Optoelectronics Applications

Computational Studies of the Excitonic and Optical Properties of Armchair SWCNT and SWBNNT for Optoelectronics Applications

Synthesis of silver nanoparticles using Eucommia ulmoides extract and their potential biological function in cosmetics

Observation of targeted gold nanoparticles in nasopharyngeal tumour nude mice model through dual‐energy computed tomography

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