نتایج جستجو برای: au nano dendrites

تعداد نتایج: 138680  

2007
A. S. EL - SAID W. MEISSL M. C. SIMON J. R. CRESPO LÓPEZ - URRUTIA I. C. GEBESHUBER J. LAIMER H. P. WINTER J. ULLRICH F. AUMAYR

It has recently been demonstrated that slow (v << 1 a.u.) highly charged ions (HCIs) are able to generate nano-sized hillocks on cleaved CaF2(1 1 1) surfaces. The aim of the present study was to explore whether surface nanostructures can also be formed on other target materials by the impact of slow HCIs. To this purpose, we have irradiated LiF(0 0 1), diamond-like carbon (DLC) and Au(1 1 1) wi...

Journal: :physiology and pharmacology 0
hamid sepehry 1. department of physiology, faculty of medicine, golestan university of medical sciences farzaneh ganji department of biology, faculty of sciences, golestan university, gorgan

introduction: appropriate thyroid hormone (th) levels are essential during the critical period of brain development, which is associated with the growth of axons and dendrites and synapse formation. in rats, oral motor circuits begin to reach to their adult pattern around 3 weeks after birth, the period in which alteration from sucking to biting and chewing occurs (weaning time). trigeminal mot...

Journal: :journal of herbal drugs (an international journal on medicinal herbs) 2011
mohammad hosseini-sharifabad ebrahim esfandiari

background &amp; aim: in traditional medicine, boswellia species gum resin known as frankincense or olibanum, has been administrated in elderly for enhancement of memory and also in pregnant women to increase memory and intelligence of progeny. however, it has been rarely scientifically documented so far. we have previously reported that maternal administration of frankincense during lactation ...

2003
Z. R. Dai J. P. Bradley D. E. Brownlee D. J. Joswiak

Introduction: At least some meteoritic nano-diamonds are likely of presolar origin because of their association with anomalous Xe-HL and Te isotopic components indicative of a supernova (SN) origin [1,2]. But the abundance of Xe is such that only ~1 in 10 6 nano-diamonds contains a Xe atom, and the bulk 13 C/ 12 C composition of nano-diamond acid residues is chondritic (solar) [3]. Therefore, i...

Journal: :Journal of the American Chemical Society 2012
Ran Liu Ayusman Sen

We describe a new synthetic approach to heterogeneous metal-TiO(2) nanomaterials based on conversion of Ti(3+) to hydrous TiO(2) occurring uniquely on the nanostructured metallic surfaces such as Pt, Au, and Ni nanowires and nanoparticles. The TiO(2) growth mechanism was studied by designing an electrochemical cell. A variety of heterogeneous metal-TiO(2) nanostructures, such as segmented meta...

2018
Thomas Hartman Bert M Weckhuysen

Raman spectroscopy is known as a powerful technique for solid catalyst characterization as it provides vibrational fingerprints of (metal) oxides, reactants, and products. It can even become a strong surface-sensitive technique by implementing shell-isolated surface-enhanced Raman spectroscopy (SHINERS). Au@TiO2 and Au@SiO2 shell-isolated nanoparticles (SHINs) of various sizes were therefore pr...

2014
Jane Y Howe Lawrence F Allard Wilbur C Bigelow Hendrix Demers Steven H Overbury

By coupling techniques of simultaneous secondary (SE) and transmitted electron (TE) imaging at high resolution in a modern scanning transmission electron microscope (STEM), with the ability to heat specimens using a highly stable MEMS-based heating platform, we obtained synergistic information to clarify the behavior of catalysts during in situ thermal treatments. Au/iron oxide catalyst 'leache...

2013
Qi Xu Fang Liu Yuxiang Liu Kaiyu Cui Xue Feng Wei Zhang Yidong Huang

In this paper, we present an investigation on the use of Au-Ag alloy popcorn-shaped nanoparticles (NPs) to realise the broadband optical absorption enhancement of dye-sensitized solar cells (DSCs). Both simulation and experimental results indicate that compared with regular plasmonic NPs, such as nano-spheres, irregular popcorn-shaped alloy NPs exhibit absorption enhancement over a broad wavele...

Journal: :Chemical science 2016
Dean H Barrett Michael S Scurrell Cristiane B Rodella Beatriz Diaz David G Billing Paul J Franklyn

When Au is subdivided to the nanoscale its reactivity changes from an inert nature to one of incredible reactivity which is not replicated by other catalysts. When dispersed onto metal oxides such as TiO2, nano-Au has shown high reactivities for a multitude of reduction and oxidation reactions of industrial importance with potential and current uses such as, CO oxidation, NO x reduction, purifi...

Journal: :Chinese Physics 2022

Unidirectional scattering of various plasmonic nanoantennas has been extensively studied, giving birth to applications such as in optical sensors, solar cells, spectroscopy and light-emitting devices. The directional magnetic nanoantenna is still unexplored, though it beneficial artificial magnetism including metamaterials, cloaking nonlinear resonance. In this work, we numerically investigate ...

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