نتایج جستجو برای: nanoparticle shape

تعداد نتایج: 219621  

This investigation evaluates the first and second laws of thermodynamics for a flat plate sheet and tube based solar collector located in Abu-Musa Island (in Persian Gulf) in Hormozgan province, Iran where a suspension of molybdenum disulfide (MoS2) nanoparticles with different shapes in water is the working fluid. The main aim of this study is to analyze morphology effects of MoS2 nanoparticle...

Journal: :Journal of Chemical Theory and Computation 2021

Understanding the size- and shape-dependent properties of platinum nanoparticles is critical for enabling design nanoparticle-based applications with optimal potentially tunable functionality. Toward this goal, we evaluated nine different empirical potentials purpose accurately modeling faceted using molecular dynamics simulation. First, were by computing bulk surface properties—surface energy,...

2016
Randall Toy Krishnendu Roy

Advances in immunotherapy have led to the development of a variety of promising therapeutics, including small molecules, proteins and peptides, monoclonal antibodies, and cellular therapies. Despite this wealth of new therapeutics, the efficacy of immunotherapy has been limited by challenges in targeted delivery and controlled release, that is, spatial and temporal control on delivery. Particul...

2014
Robert Boyd Rickard Gunnarsson Iris Pilch Ulf Helmersson Robert D. Boyd

Whilst the use of microscopic techniques to determine the size distributions of nanoparticle samples is now well established, their characterisation challenges extend well beyond this. Here it is shown how high resolution electron microscopy can help meet these challenges. One of the key parameters is the determination of particle shape and structure in three dimensions. Here two approaches to ...

Journal: :Epj Web of Conferences 2022

Coherent Fourier Scatterometry (CFS) is a scatterometry technique that has been applied for grating and nanoparticle detection. Here, it challenged to verify the detectability of so-called killer defects on SiC samples power electronic applications. It shown CFS able precisely recognize these regardless their shape or size. could be considered as possible alternative this purpose.

Journal: :Nanoscale 2012
Y Chen Y Zhang D J S Birch A S Barnard

Fluorescent metal nanoparticles have attracted great interest in recent years for their unique properties and potential applications. Their optical behaviour depends not only on size but also on shape, and will only be useful if the morphology is stable. In this work, we produce stable size-selected gold nanorods (aspect ratio 1-2) using a size-selected cluster source and correlate their lumine...

2011
Jhillu S Yadav Pragna P Das T Lakshminarayan Reddy Indira Bag Priyadarshini M Lavanya Bulusu Jagannadh Debendra K Mohapatra Manika Pal Bhadra Utpal Bhadra

BACKGROUND Organic nanomaterials having specific biological properties play important roles in in vivo delivery and clearance from the live cells. To develop orally deliverable nanomaterials for different biological applications, we have synthesized several fluorescently labelled, self-assembled PABA nanoparticles using possible acid side chain combinations and tested against insect and human c...

2008
M. Ridgway P. Kluth R. Giulian D. Sprouster L. Araujo C. Schnohr D. Llewellyn A. Byrne G. Foran D. Cookson M. C. Ridgway

Changes in the shape and size of Co, Pt and Au nanoparticles induced by swift heavy-ion irradiation (SHII) have been characterized using a combination of transmission electron microscopy, small-angle x-ray scattering and x-ray absorption near-edge structure. Elemental nanoparticles of diameters 2-15 nm were first formed in amorphous SiO 2 by ion implantation and thermal annealing and then irrad...

2011
Grégory Guisbiers Gulmira Abudukelimu Djamila Hourlier

While nanocatalysis is a very active field, there have been very few studies in the size/shape-dependent catalytic properties of transition metals from a thermodynamical approach. Transition metal nanoparticles are very attractive due their high surface to volume ratio and their high surface energy. In particular, in this paper we focus on the Pt-Pd catalyst which is an important system in cata...

2012
Haiyan Ma Poul Martin Bendix Lene Broeng Oddershede Niels Bohr

When irradiated at its resonance frequency, a metallic nanoparticle efficiently converts the absorbed energy into heat which is locally dissipated. This effect can be used in photothermal treatments, e.g., of cancer cells. However, to fully exploit the functionality of metallic nanoparticles as nanoscopic heat transducers, it is essential to know how the photothermal efficiency depends on param...

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