scholarly journals The Relationship between Surface Charge Density and Dye Adsorption of Wool Fiber in Acid Dye Solution

1960 ◽  
Vol 63 (6) ◽  
pp. 1072-1075
Author(s):  
Toshiro Suzawa
Keyword(s):  
Charge Density ◽  
Surface Charge ◽  
Surface Charge Density ◽  
Dye Adsorption ◽  
Wool Fiber ◽  
Acid Dye ◽  
The Relationship

scholarly journals FORMATION OF THE TWO-DIMENSIONAL ELECTRON GAS (2DEG) IN THE STRUCTURE WITH TWO AlxGa1-xN/GaN/AlуGa1-уN BARRIER LAYERS

2020 ◽  
pp. 4-16
Author(s):  
A.N. Maksimov
Keyword(s):  
Charge Density ◽  
Surface Charge ◽  
Barrier Layer ◽  
Surface Charge Density ◽  
Surface Concentration ◽  
Barrier Layers ◽  
Noticeable Increase ◽  
Positive Side ◽  
Dimensional Electron Gas ◽  
The Relationship

This article is dedicated to the study of AlxGa1-xN/GaN/AlуGa1-уN heterostructures and spontaneous and piezoelectric polarizations, which induces 2DEG. In this research the surface charge density, the surface concentration of carriers in the channel and the relationship between the amount of Al molar fractions in upper and lower barrier layers and the surface charge density were determined. Change in the concentration of Al mole fractions in the upper barrier layer from 15 to 40, causes noticeable increase in the surface concentration of carriers ns(x). Change in the concentration of Al mole fractions in the lower barrier layer from 0.05 to 0.12, causes noticeable decrease in the surface concentration of ns carriers. The features of high-voltage HEMT with two barrier layers were considered. The introduction of the second barrier layer leads to a better electron confinement in the GaN channel, but at the same time, the maximum carrier density (2DEG) in the channel decreases and the voltage threshold shifts to the positive side.

scholarly journals ζ-POTENTIAL AND SURFACE CHARGE DENSITY OF TANNIC ACID-TREATED NYLON 6 FIBERS IN ACID DYE SOLUTIONS

1981 ◽  
Vol 37 (6) ◽  
pp. T241-T246 ◽  
Author(s):  
Shinji Ogasawara ◽  
Hiromasa Asami ◽  
Yoshifumi Kimura ◽  
Shigetaka Kuroiwa
Keyword(s):  
Charge Density ◽  
Surface Charge ◽  
Tannic Acid ◽  
Surface Charge Density ◽  
Nylon 6 ◽  
Acid Dye ◽  
Ζ Potential ◽  
Dye Solutions
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