Selective Plasmonic Sensing and Highly Ordered Metallodielectrics via Encapsulation of Plasmonic Metal Nanoparticles with Metal Oxides

2018 ◽  
Vol 1 (11) ◽  
pp. 6514-6524 ◽  
Author(s):  
Nicole Cathcart ◽  
Nimer Murshid ◽  
Patrick Campbell ◽  
Vladimir Kitaev
Keyword(s):  
Metal Oxides ◽  
Metal Nanoparticles ◽  
Plasmonic Sensing

scholarly journals Analysis of the Exposure of Organisms to the Action of Nanomaterials

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 349 ◽  
Author(s):  
Anita Staroń ◽  
Olga Długosz ◽  
Jolanta Pulit-Prociak ◽  
Marcin Banach
Keyword(s):  
Metal Oxides ◽  
Metal Nanoparticles ◽  
Public Awareness ◽  
Rapid Development ◽  
Careful Analysis ◽  
In Vitro Tests ◽  
Nanoparticle Interactions ◽  
The Impact

The rapid development of the production of materials containing metal nanoparticles and metal oxides is a potential risk to the environment. The degree of exposure of organisms to nanoparticles increases from year to year, and its effects are not fully known. This is due to the fact that the range of nanoparticle interactions on cells, tissues and the environment requires careful analysis. It is necessary to develop methods for testing the properties of nanomaterials and the mechanisms of their impact on individual cells as well as on entire organisms. The particular need to raise public awareness of the main sources of exposure to nanoparticles should also be highlighted. This paper presents the main sources and possible routes of exposure to metal nanoparticles and metal oxides. Key elements of research on the impact of nanoparticles on organisms, that is, in vitro tests, in vivo tests and methods of detection of nanoparticles in organisms, are presented.

scholarly journals Biocompatible Metal-Oxide Nanoparticles: Nanotechnology Improvement of Conventional Prosthetic Acrylic Resins

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Laura S. Acosta-Torres ◽  
Luz M. López-Marín ◽  
R. Elvira Núñez-Anita ◽  
Genoveva Hernández-Padrón ◽  
Victor M. Castaño
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Metal Nanoparticles ◽  
Suspension Polymerization ◽  
Metal Oxide Nanoparticles ◽  
Physicochemical Characterization ◽  
Dental Restoration ◽  
Oxide Nanoparticles ◽  
Dental Resins ◽  
Acrylic Resins

Nowadays, most products for dental restoration are produced from acrylic resins based on heat-cured Poly(Methyl MethAcrylate) (PMMA). The addition of metal nanoparticles to organic materials is known to increase the surface hydrophobicity and to reduce adherence to biomolecules. This paper describes the use of nanostructured materials, TiO2and Fe2O3, for simultaneously coloring and/or improving the antimicrobial properties of PMMA resins. Nanoparticles of metal oxides were included during suspension polymerization to produce hybrid metal oxides-alginate-containing PMMA. Metal oxide nanoparticles were characterized by dynamic light scattering, and X-ray diffraction. Physicochemical characterization of synthesized resins was assessed by a combination of spectroscopy, scanning electron microscopy, viscometry, porosity, and mechanical tests. Adherence ofCandida albicanscells and cellular compatibility assays were performed to explore biocompatibility and microbial adhesion of standard and novel materials. Our results show that introduction of biocompatible metal nanoparticles is a suitable means for the improvement of conventional acrylic dental resins.

scholarly journals Nanoparticles as Potential Antivirals in Agriculture

Agriculture ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 444
Author(s):  
Marcela Vargas-Hernandez ◽  
Israel Macias-Bobadilla ◽  
Ramon Gerardo Guevara-Gonzalez ◽  
Enrique Rico-Garcia ◽  
Rosalia Virginia Ocampo-Velazquez ◽  
...  
Keyword(s):  
Beneficial Effect ◽  
Physicochemical Properties ◽  
Metal Oxides ◽  
Metal Nanoparticles ◽  
Mechanisms Of Action ◽  
Plant Diseases ◽  
Antiviral Property ◽  
Interaction Processes ◽  
Antiviral Effects ◽  
Wide Range

Viruses are estimated to be responsible for approximately 50% of the emerging plant diseases, which are difficult to control, and in some cases, there is no cure. It is essential to develop therapy practices to strengthen the management of these diseases caused by viruses in economically important crops. Metal nanoparticles (MeNPs) possess diverse physicochemical properties that allow for them to have a wide range of applications in industry, including nanomedicine and nano-agriculture. Currently, there are reports of favorable effects of the use of nanoparticles, such as antibacterial, antifungal, and antiviral effects, in animals and plants. The potential antiviral property of MeNPs makes them a powerful option for controlling these histological agents. It is crucial to determine the dosage of NPs, the application intervals, their effect as a biostimulant, and the clarification of the mechanisms of action, which are not fully understood. Therefore, this review focuses on discussing the ability of metal nanoparticles and metal oxides to control viruses that affect agriculture through an exhaustive analysis of the characteristics of the particles and their interaction processes for a possibly beneficial effect on plants.

A general synthesis of mesoporous metal oxides with well-dispersed metal nanoparticles via a versatile sol–gel process

2013 ◽  
Vol 1 (12) ◽  
pp. 4038 ◽  
Author(s):  
Juanjuan Liu ◽  
Shihui Zou ◽  
Sha Li ◽  
Xiaofeng Liao ◽  
Yejiang Hong ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Metal Nanoparticles ◽  
Sol Gel ◽  
Mesoporous Metal Oxides ◽  
Sol Gel Process ◽  
Mesoporous Metal ◽  
General Synthesis

Recent developments of nanoenzyme-based colorimetric sensors for heavy metal detection and the interaction mechanism

The Analyst ◽  
2020 ◽  
Vol 145 (9) ◽  
pp. 3173-3187 ◽  
Author(s):  
Zhengquan Yan ◽  
Hua Yuan ◽  
Qi Zhao ◽  
Lin Xing ◽  
Xiaoyu Zheng ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Oxides ◽  
Metal Nanoparticles ◽  
Interaction Mechanism ◽  
Metal Sulfides ◽  
Heavy Metal Detection ◽  
G Quadruplex ◽  
Metal Detection ◽  
Recent Developments ◽  
Colorimetric Sensors

This work highlights the application and interaction mechanism of metal nanoparticles, metal oxides, metal sulfides, graphene-based nanomaterials and G-quadruplex, etc. in nanoenzyme-based colorimetric sensors.

scholarly journals Study of formation process of metal nanoparticles on metal oxides by in-situ XAFS technique

2013 ◽  
Vol 430 ◽  
pp. 012060 ◽  
Author(s):  
T Shishido ◽  
H Nasu ◽  
L Deng ◽  
K Teramrua ◽  
T Tanaka
Keyword(s):  
Metal Oxides ◽  
Metal Nanoparticles ◽  
Formation Process ◽  
In Situ Xafs
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