نتایج جستجو برای: dynamic light scattering

تعداد نتایج: 879955  

In the present research, the D-(+)-Glucose–confined water nanodroplets with mean size in the range of 6-11 nm were synthesized at D-(+)-Glucose different concentrations by AOT reverse micelles (RMs) method as a function of mass fraction of droplet (MFD) at the constant water-to-surfactant molar ratio ( W=40). The dynamic light scattering of the nano-sized water droplets containing the D-(+)-Glu...

Journal: :international journal of nano dimension 0
p. khalid department of biotechnology, p a college of engineering, vtu. mangalore, karnataka, india. v.b. suman department of physiology, manipal university. kasturba medical college. mangalore, karnataka, india. s. shameema department of physiology, manipal university. kasturba medical college. mangalore, karnataka, india. n. a. vinodini department of physiology, manipal university. kasturba medical college. mangalore, karnataka, india. r. pai. shela department of physiology, manipal university. kasturba medical college. mangalore, karnataka, india. pratik k. chattergee department of physiology, manipal university. kasturba medical college. mangalore, karnataka, india.

in recent years, it has become evident that it is necessary to systematically and accurately define particle characteristics in order to understand the potential toxicity of nanoparticles to biological systems. the properties that need to be emphasized are size, shape, dispersion, doping, aggregation, functionalization, physical and chemical properties, surface area, and surface chemistry. rout...

Journal: :international journal of nano dimension 0
m. seyed sadjadi department of chemistry, science and research branch, islamic azad university, tehran 14778 92855, iran. s. e. babaei department of chemistry, science and research branch, islamic azad university, tehran 14778 92855, iran. n. farhadyar department of chemistry, varamin –pishva branch, islamic azad university, varamin, iran.

in this work, we report synthesis of surface modified superparamagnetic iron oxide nanoparticles (spion) by co-precipitation method using feso4.7h2o and fe2(so4)3.5h2o as precursors and trisodium citrate dihydrate as surfactant. surface modification of the as prepared samples was performed in pot by sol-gel precipitation method using tetraethoxysilane (teos). the structure, morphology, and magn...

Green nano pigments of Cr2O3 and CoCr2O4 were successfully prepared by polyol method followed by calcination at 770°C. The Cr2O3 and CoCr2O4 samples were characterized by X-ray diffraction XRD, scanning electron microscopy SEM, diffuse reflectance spectroscopy DRS, dynamic light scattering DLS, UV–Vis spectroscopy and CIE-Lab colorimetry methods. Dynamic light scattering analysis confirmed the f...

2012
Daniel T. Gillespie

A HeNe laser beam incident on a sample of micron-sized spheres suspended in water scatters into a random pattern of spots of varying size, shape, and intensity. The pattern results from the coherent superposition of the outgoing waves scattered from the spheres. Because the spheres are in constant Brownian motion, the pattern randomly changes in time. A photodetector is placed in the pattern an...

1999
W. I. Goldburg

By scattering light from small particles, their geometrical structure and their state of motion can be measured. An experiment is described for measuring the diffusivity of small particles undergoing Brownian motion using the technique called photon correlation spectroscopy or dynamic light scattering. The necessary experimental apparatus and the related theory are discussed. Photon correlation...

2010
Marisol Chang

A dynamic light scattering apparatus was built with a HeNe laser; the beam incident on a sample of particles(microspheres of one or multiple diameters or casein undigested and digested) suspended in water scatters into a random pattern product of the coherent superposition of the outgoing waves scattered from the spheres. Because the spheres are in constant Brownian motion, the pattern randomly...

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