Characterization of Gd loaded chitosan-TPP nanohydrogels by a multi-technique approach combining dynamic light scattering (DLS), asymetrical flow-field-flow-fractionation (AF4) and atomic force microscopy (AFM) and design of positive contrast agents for molecular resonance imaging (MRI)

2016 ◽  
Vol 28 (5) ◽  
pp. 055705 ◽  
Author(s):  
G Rigaux ◽  
C V Gheran ◽  
M Callewaert ◽  
C Cadiou ◽  
S N Voicu ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Positive Contrast ◽  
Field Flow Fractionation ◽  
Resonance Imaging ◽  
Force Microscopy ◽  
Atomic Force ◽  
Molecular Resonance

Characterization of Polymeric Particles with Electron Microscopy, Dynamic Light Scattering, and Atomic Force Microscopy

2010 ◽  
Vol 28 (5) ◽  
pp. 472-484 ◽  
Author(s):  
Betina Giehl Zanetti-Ramos ◽  
Mauricia Beddin Fritzen-Garcia ◽  
Tânia Beatriz Creczynski-Pasa ◽  
Cristian Schweitzer De Oliveira ◽  
André Avelino Pasa ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Atomic Force Microscopy ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Force Microscopy ◽  
Atomic Force ◽  
Polymeric Particles

scholarly journals Detection Limits of DLS and UV-Vis Spectroscopy in Characterization of Polydisperse Nanoparticles Colloids

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Emilia Tomaszewska ◽  
Katarzyna Soliwoda ◽  
Kinga Kadziola ◽  
Beata Tkacz-Szczesna ◽  
Grzegorz Celichowski ◽  
...  
Keyword(s):  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Point Of View ◽  
Spectroscopy Analysis ◽  
Force Microscopy ◽  
Atomic Force ◽  
Transmission Electron ◽  
Vis Spectroscopy ◽  
The One

Dynamic light scattering is a method that depends on the interaction of light with particles. This method can be used for measurements of narrow particle size distributions especially in the range of 2–500 nm. Sample polydispersity can distort the results, and we could not see the real populations of particles because big particles presented in the sample can screen smaller ones. Although the theory and mathematical basics of DLS technique are already well known, little has been done to determine its limits experimentally. The size and size distribution of artificially prepared polydisperse silver nanoparticles (NPs) colloids were studied using dynamic light scattering (DLS) and ultraviolet-visible (UV-Vis) spectroscopy. Polydisperse colloids were prepared based on the mixture of chemically synthesized monodisperse colloids well characterized by atomic force microscopy (AFM), transmission electron microscopy (TEM), DLS, and UV-Vis spectroscopy. Analysis of the DLS results obtained for polydisperse colloids reveals that several percent of the volume content of bigger NPs could screen completely the presence of smaller ones. The presented results could be extremely important from nanoparticles metrology point of view and should help to understand experimental data especially for the one who works with DLS and/or UV-Vis only.

Dynamic light scattering and atomic force microscopy techniques for size determination of polyurethane nanoparticles

2009 ◽  
Vol 29 (2) ◽  
pp. 638-640 ◽  
Author(s):  
Betina Giehl Zanetti-Ramos ◽  
Mauricia Beddin Fritzen-Garcia ◽  
Cristian Schweitzer de Oliveira ◽  
André Avelino Pasa ◽  
Valdir Soldi ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Size Determination ◽  
Force Microscopy ◽  
Atomic Force ◽  
Microscopy Techniques

Growth of β-Amyloid(1−40) Protofibrils by Monomer Elongation and Lateral Association. Characterization of Distinct Products by Light Scattering and Atomic Force Microscopy†

Biochemistry ◽  
2002 ◽  
Vol 41 (19) ◽  
pp. 6115-6127 ◽  
Author(s):  
Michael R. Nichols ◽  
Melissa A. Moss ◽  
Dana Kim Reed ◽  
Wen-Lang Lin ◽  
Rajendrani Mukhopadhyay ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Light Scattering ◽  
Force Microscopy ◽  
Lateral Association ◽  
Atomic Force ◽  
Β Amyloid
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