نتایج جستجو برای: gold nps

تعداد نتایج: 93507  

ameneh farnood, Hadi Salamati Mehdi Ranjbar,

Nowadays, hydrogen has attracted significant attention as a next generation clean energy source. Hydrogen is highly flammable, so detection of hydrogen gas is required. Gold nanoparticle based localized surface plasmon resonance (LSPR) is an advanced and powerful sensing technique, which is well known for its high sensitivity to surrounding refractive index change in the local environment. We p...

Journal: :Applied sciences 2021

Halloysite nanotubes (HNTs) with immobilized gold (Au) and silver (Ag) nanoparticles (NPs) belong to a class of nanocomposite materials whose physical properties applications depend on the geometry arrangements plasmonic HNT’ surfaces. We explore HNTs:(Au, Ag)-NPs as potential nano-templates for surface-enhanced Raman scattering (SERS). The structure nanocomposites based HNTs Au- Ag-NPs are stu...

Journal: :Nano select 2022

Abstract The formation of well‐defined, functional surfaces that incorporate the unique properties inorganic nanoparticles (NPs) requires robust and scalable fabrication strategies. Herein, we report a methodology for decoration polymer molds with plasmonic (gold) nanoparticle arrays. Wrinkled soft templates were used to assemble gold NPs (74 nm) into line These pre‐formed arrays transferred in...

Journal: :Nano select 2022

Introduction The objective of this literature review is to highlight both the recent promises Nanoparticles (NPs) for breast imaging and potential solutions challenges that arise with using different types NPs. Methods We searched key terms on PubMed including NPs, MRI, CT, contrast agent (CA). selected 57 articles published from 2012 2020 discussed NP such as nanocarriers, titanium oxide tubes...

2014
Sri Ramkumar Vijayan Prakash Santhiyagu Muthukkumarasamy Singamuthu Natarajan Kumari Ahila Ravindran Jayaraman Kannapiran Ethiraj

Silver and gold nanoparticles were synthesized using an aqueous extract of the seaweed Turbinaria conoides and their antibiofilm activity against marine biofilm forming bacteria is reported here. The UV-Vis spectra showed the characteristics SPR absorption band for Ag NPs at 421 and for Au NPs at 538 nm. Further, the synthesized nanoparticles were characterized using FT-IR, XRD, FESEM, EDX, and...

2012
Zoheb Karim Rohana Adnan Mohd Saquib Ansari

Chemical synthesis of Ag-NPs was carried out using reduction method. The reduction mechanistic approach of silver ions was found to be a basic clue for the formation of the Ag-NPs. The nanoparticles were characterized by UV-vis, FT-IR and TEM analysis. We had designed some experiments in support of our hypothesis, "low concentrations of novel nanoparticles (silver and gold) increases the activi...

2017
Ying Sun Qi Wang Jianhua Chen Lei Liu Li Ding Ming Shen Jin Li Baoshan Han Yourong Duan

Gold nanoparticle-coated Pluronic-b-poly(L-lysine) nanoparticles (Pluronic-PLL@Au NPs) were synthesized via an easy one-step method and employed as carriers for the delivery of paclitaxel (PTX) in chemo-photothermal therapy, in which Pluronic-PLL acts as the reductant for the formation of AuNPs without the need for an additional reducing agent. METHODS The deposition of AuNPs on the surface o...

Journal: :ACS nano 2008
Edward Jan Stephen J Byrne Meghan Cuddihy Anthony M Davies Yuri Volkov Yurii K Gun'ko Nicholas A Kotov

Recent advances and progress in nanobiotechnology have demonstrated many nanoparticles (NPs) as potential and novel drug delivery vehicles, therapeutic agents, and contrast agents and luminescent biological labels for bioimaging. The emergence of new biomedical applications based on NPs signifies the need to understand, compare, and manage their cytotoxicity. In this study, we demonstrated the ...

2016
Roberto Díez-Martínez Esther García-Fernández Miguel Manzano Ángel Martínez Mirian Domenech María Vallet-Regí Pedro García

Drug-loaded nanoparticles (NPs) can improve infection treatment by ensuring drug concentration at the right place within the therapeutic window. Poly(lactic-co-glycolic acid) (PLGA) NPs are able to enhance drug localization in target site and to sustainably release the entrapped molecule, reducing the secondary effects caused by systemic antibiotic administration. We have loaded auranofin, a go...

2011
Sujoy K. Das Enrico Marsili

This IRCSET-EMPOWER (Irish Research Council for Science, Engineering and Technology Postdoctoral Research Grant) project aims to improve current methodology for the synthesis of metal nanoparticles (NPs). The development of efficient methodology for metal nanomaterials synthesis is an economical and environmental challenge. While the current methods for NPs synthesis are often energy-intensive ...

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