All Blog Posts Tagged 'Gold' (5)


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Mutagenic effects of gold nanoparticles induce aberrant phenotypes in Drosophila melanogaster

Abstract

The peculiar physical/chemical characteristics of engineered nanomaterials have led to a rapid increase of nanotechnology-based applications in many fields. However, before exploiting their huge and wide potential, it is necessary to assess their effects upon interaction with living systems. In this context, the screening of nanomaterials to evaluate their possible toxicity and understand the underlying mechanisms currently…

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Added by Giuseppe Vecchio on April 30, 2013 at 8:37am — No Comments


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Concentration-Dependent, Size-Independent Toxicity of Citrate Capped AuNPs in Drosophila melanogaster

Abstract

The expected potential benefits promised by nanotechnology in various fields have led to a rapid increase of the presence of engineered nanomaterials in a high number of commercial goods. This is generating increasing questions about possible risks for human health and environment, due to the lack of an in-depth assessment of the physical/chemical factors responsible for their toxic effects. In this work, we evaluated the toxicity of monodisperse citrate-capped gold…

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Added by Giuseppe Vecchio on April 29, 2013 at 8:30am — No Comments


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Unexpected Electronic Properties of Micrometer-Thick Supracrystals of Au Nanocrystals

We investigated the electronic properties of highly ordered three-dimensional colloidal crystals of gold nanocrystals (7 ± 0.4 nm), called supracrystals. Two kinds of Au supracrystals with typical thicknesses of 300 nm and 5 μm, respectively, are probed for the first time with scanning tunneling microscopy/spectroscopy at 5 K revealing similar power law behavior and showing homogeneous conductance with the fingerprint of isolated nanocrystal. Potential applications evading the…

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Added by pengyang on March 27, 2012 at 4:10pm — 5 Comments


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Gold nanopowder/Silver nanoparticles colloidal suspension

Gold Nanoparticles

Colloidal solution in water, 0.05 mg/mL

Average particle size: 20±3 nm pH ca. 8,0



Available in : 10ml , 100ml Pack Sizes




Au - dry nanopowder, hydrophobic


Forms colloidal solutions in non-polar solvents. Monodisperse nanoparticles, can be used for 2-D and 3-D structures build-up.



Average particle size: ca. 2 nm.



Available in : 10mg , 50mg Pack… Continue

Added by Eishita Koley on September 16, 2011 at 11:53am — No Comments


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Nano Gold from Marine sponges

We are proud to report for the first time of

biosynthesis of gold nanoparticles using marine sponge
Acanthella elongata…
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Added by inbakandan on September 9, 2010 at 6:00am — 3 Comments

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Welcome - about us

Welcome! Nanopaprika was cooked up by Hungarian chemistry PhD student in 2007. The main idea was to create something more personal than the other nano networks already on the Internet. Community is open to everyone from post-doctorial researchers and professors to students everywhere.

There is only one important assumption: you have to be interested in nano!

Nanopaprika is always looking for new partners, if you have any idea, contact me at editor@nanopaprika.eu

Dr. András Paszternák, founder of Nanopaprika

Publications by A. Paszternák:

Smartphone-Based Extension of the Curcumin/Cellophane pH Sensing Method

Pd/Ni Synergestic Activity for Hydrogen Oxidation Reaction in Alkaline Conditions

The potential use of cellophane test strips for the quick determination of food colours

pH and CO2 Sensing by Curcumin-Coloured Cellophane Test Strip

Polymeric Honeycombs Decorated by Nickel Nanoparticles

Directed Deposition of Nickel Nanoparticles Using Self-Assembled Organic Template,

Organometallic deposition of ultrasmooth nanoscale Ni film,

Zigzag-shaped nickel nanowires via organometallic template-free route

Surface analytical characterization of passive iron surface modified by alkyl-phosphonic acid layers

Atomic Force Microscopy Studies of Alkyl-Phosphonate SAMs on Mica

Amorphous iron formation due to low energy heavy ion implantation in evaporated 57Fe thin films

Surface modification of passive iron by alkylphosphonic acid layers

Formation and structure of alkylphosphonic acid layers on passive iron

Structure of the nonionic surfactant triethoxy monooctylether C8E3 adsorbed at the free water surface, as seen from surface tension measurements and Monte Carlo simulations

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