scholarly journals Holographic characterization of colloidal particles in turbid media

2017 ◽  
Vol 111 (15) ◽  
pp. 153702 ◽  
Author(s):  
Fook Chiong Cheong ◽  
Priya Kasimbeg ◽  
David B. Ruffner ◽  
Ei Hnin Hlaing ◽  
Jaroslaw M. Blusewicz ◽  
...  
Keyword(s):  
Colloidal Particles ◽  
Turbid Media

scholarly journals Lifting degeneracy in holographic characterization of colloidal particles using multi-color imaging

2018 ◽  
Vol 26 (10) ◽  
pp. 13239 ◽  
Author(s):  
David B. Ruffner ◽  
Fook Chiong Cheong ◽  
Jaroslaw M. Blusewicz ◽  
Laura A. Philips
Keyword(s):  
Colloidal Particles ◽  
Color Imaging

Preparation and characterization of uniform submicrometer metal niobate particles: Part II. Magnesium niobate and potassium niobate

1992 ◽  
Vol 7 (4) ◽  
pp. 912-918 ◽  
Author(s):  
Myung Jin Kim ◽  
Egon Matijević
Keyword(s):  
Colloidal Particles ◽  
Spherical Particles ◽  
Potassium Niobate ◽  
Homogeneous Precipitation ◽  
Potassium Salts ◽  
Chemical Mechanisms ◽  
Magnesium Niobate

Amorphous spherical particles of magnesium and potassium niobates were produced by homogeneous precipitation in solutions of magnesium and potassium salts, respectively, in the presence of polymeric niobium oxo-hydroxide ions. At pH 9 solids of definitive compositions were achieved and converted to crystalline powders of MgNb2O6 and KNbO3 on calcination. Chemical mechanisms for the formation and transformation of such colloidal particles are offered.

scholarly journals Characterization of aqueous cellulose nanofiber dispersions from microscopy movie data of Brownian particles by trajectory analysis

2019 ◽  
Vol 1 (1) ◽  
pp. 421-429 ◽  
Author(s):  
Reiji Motohashi ◽  
Itsuo Hanasaki
Keyword(s):  
Rheological Properties ◽  
Trajectory Analysis ◽  
Colloidal Particles ◽  
Cellulose Nanofibers ◽  
Cellulose Nanofiber ◽  
Dynamical Characteristics ◽  
Brownian Particles

Cellulose nanofibers (CNFs) are not directly visible by microscopes when dispersed in water, but the dynamical characteristics of suspended colloidal particles tells us the texture as well as the rheological properties of CNF dispersions beyond the viscosity.

scholarly journals Optical Characterization of Homogeneous and Heterogeneous Intralipid-Based Samples

2020 ◽  
Vol 10 (18) ◽  
pp. 6234
Author(s):  
Ines Delfino ◽  
Maria Lepore ◽  
Rosario Esposito
Keyword(s):  
Optical Properties ◽  
Light Scattering ◽  
Scattered Light ◽  
Industrial Applications ◽  
Point Of View ◽  
Turbid Media ◽  
Time Resolved ◽  
Propagation Of Light ◽  
First Time

Different scattering processes take place when photons propagate inside turbid media. Many powerful experimental techniques exploiting these processes have been developed and applied over the years in a large variety of situations from fundamental and applied research to industrial applications. In the present paper, we intend to take advantage of Static Light Scattering (SLS), Dynamic Light Scattering (DLS), and Time-Resolved Transmittance (TRT) for investigating all the different scattering regimes by using scattering suspensions in a very large range of scatterer concentrations. The suspensions were prepared using Intralipid 20%, a material largely employed in studies of the optical properties of turbid media, with concentrations from 10−5% to 50%. By the analysis of the angular and temporal dependence of the scattered light, a more reliable description of the scattering process occurring in these samples can be obtained. TRT measurements allowed us to obtain information on the reduced scattering coefficient, an important parameter largely used in the description of the optical properties of turbid media. TRT was also employed for the detection of inclusions embedded in Intralipid suspensions, by using a properly designed data analysis. The present study allowed us to better elucidate the dependence of scattering properties of Intralipid suspensions in a very large concentration range and the occurrence of the different scattering processes involved in the propagation of light in turbid media for the first time to our knowledge. In so doing, the complementary contribution of SLS, DLS, and TRT in the characterization of turbid media from an optical and structural point of view is strongly evidenced.

White zein colloidal particles: synthesis and characterization of their optical properties on the single particle level and in concentrated suspensions

Soft Matter ◽  
2018 ◽  
Vol 14 (15) ◽  
pp. 2870-2878 ◽  
Author(s):  
F. Y. de Boer ◽  
R. N. U. Kok ◽  
A. Imhof ◽  
K. P. Velikov
Keyword(s):  
Optical Properties ◽  
Single Particle ◽  
Colloidal Particles ◽  
Plant Protein ◽  
Synthesis And Characterization ◽  
Concentrated Suspensions ◽  
Food And Beverages ◽  
Single Particle Level ◽  
Particle Level

Driven by the growing interest in using natural ingredients in food and beverages, novel plant protein-based particles are developed as all natural, edible white colorant and clouding agent.

scholarly journals Monte Carlo characterization of parallelized fluorescence confocal systems imaging in turbid media

2009 ◽  
Vol 14 (4) ◽  
pp. 044024 ◽  
Author(s):  
Anthony A. Tanbakuchi ◽  
Andrew R. Rouse ◽  
Arthur F. Gmitro
Keyword(s):  
Monte Carlo ◽  
Turbid Media

STM Investigations of Confined Transition Metal Chalcogenide Colloidal Particles

1996 ◽  
Vol 464 ◽  
Author(s):  
F. Kivuitu ◽  
S. P. Kelty
Keyword(s):  
Transition Metal ◽  
Colloidal Particles ◽  
Chemical Reactivity ◽  
Parent Material ◽  
Scanning Tunneling ◽  
Metal Chalcogenides ◽  
Tunneling Microscopy ◽  
Transition Metal Chalcogenides ◽  
Layered Transition Metal

ABSTRACTThe chemical reactivity of catalytic surfaces often arises from a unique crystal or electronic structure confined to the first few atomic layers. Scanning Tunneling Microscopy (STM) is particularly well suited to studying the spatially confined structural properties of such systems. In this paper, I report recent advances in the characterization of colloidal layered transition metal chalcogenides using STM. These particles mimic the surface (layer edge) properties of bulk catalytic materials. It is found that the materials adopt distinct equilibrium chemical and electronic structures as compared to the bulk. The possible significance of these novel structures in regard to the bulk catalytic functionality of the parent material will be briefly discussed.

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