Design and performance of a new ophthalmic instrument for dynamic light‐scattering measurements in the human eye

1996 ◽  
Vol 67 (7) ◽  
pp. 2615-2620 ◽  
Author(s):  
L. Rovati ◽  
F. Fankhauser ◽  
J. Ricka
Keyword(s):  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Human Eye ◽  
Scattering Measurements ◽  
And Performance

scholarly journals Sulfonitric Treatment of Multiwalled Carbon Nanotubes and Their Dispersibility in Water

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2442 ◽  
Author(s):  
Hui Liu ◽  
Jianfeng Wang ◽  
Jiachen Wang ◽  
Suping Cui
Keyword(s):  
Carbon Nanotubes ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Multiwalled Carbon Nanotubes ◽  
Photoelectron Spectroscopy ◽  
Oxidation Degree ◽  
Multiwalled Carbon ◽  
X Ray ◽  
Scattering Measurements ◽  
Ft Ir

In this study, Multiwalled carbon nanotubes (MWCNTs) were oxidized by a mixture of sulfuric acid and nitric acid (V:V = 3:1) at 70 °C for 1, 2, and 4 h, respectively. The oxidized MWCNTs were characterized by N2 adsorption, Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), thermal gravimetric analysis (TGA), and Raman spectroscopy to determine the oxidation degree. The dispersion of the MWCNTs was investigated by UV-vis-NIR, SEM, and dynamic light scattering measurements. Results show that sulfonitric treatment increased the surface area and total pore volume and reduced the average pore diameter of MWCNTs. The treatment promoted the formation of oxidized species on the surface MWCNTs, as identified by FT-IR, TGA, and X-ray photoelectron spectroscopy measurements, and more oxygen-containing functional groups were generated when treatment time was extended. Moreover, a general relationship between oxidation degree and dispersibility of MWCNTs in water was established. UV-vis-NIR and dynamic light scattering measurements and SEM images revealed that MWCNTs with higher oxidation degree showed better dispersibility in water.

Dynamic light scattering measurements of polystyrene in semidilute theta solutions

Polymer ◽  
1984 ◽  
Vol 25 (5) ◽  
pp. 650-658 ◽  
Author(s):  
Eric J. Amis ◽  
Charles C. Han ◽  
Yushiu Matsushita
Keyword(s):  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Scattering Measurements
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