Structural and Electrosurface Properties of Iron-Containing Porous Glasses in NaCl Solutions. II. Surface Charge and Electrokinetic Potential of Porous Glasses

2019 ◽  
Vol 81 (3) ◽  
pp. 235-244 ◽  
Author(s):  
L. E. Ermakova ◽  
E. A. Grinkevich ◽  
A. V. Volkova ◽  
A. S. Kuznetsova ◽  
L. N. Kurilenko ◽  
...  
Keyword(s):  
Surface Charge ◽  
Electrokinetic Potential ◽  
Porous Glasses

Structural Characteristics and Electrokinetic Potential of Silicate Porous Glasses Doped with Silver Iodide

2021 ◽  
Vol 47 (4) ◽  
pp. 390-393
Author(s):  
A. S. Kuznetsova ◽  
L. E. Ermakova ◽  
M. A. Girsova ◽  
T. V. Antropova
Keyword(s):  
Silver Iodide ◽  
Electrokinetic Potential ◽  
Structural Characteristics ◽  
Porous Glasses

INFLUENCE OF LOW DOSE GAMMA-IRRADIATION ON THE ELECTROKINETIC POTENTIAL OF WHEAT SEEDLINGS CELLULAR NUCLEI

2020 ◽  
Vol 54 (2 (252)) ◽  
pp. 118-124
Author(s):  
L.A. Minasbekyan ◽  
A.V. Nerkararyan ◽  
M.S. Mikaelyan ◽  
R.R. Sadoyan
Keyword(s):  
Ionizing Radiation ◽  
Gamma Irradiation ◽  
Surface Charge ◽  
Low Dose ◽  
Electrokinetic Potential ◽  
Stress Factors ◽  
Wheat Seedlings ◽  
Isolated Nuclei ◽  
Chain Reactions ◽  
Living Organisms

During ontogenesis, plants are exposed to various stress factors of biotic and abiotic nature. The nucleus and mitochondria are the most sensitive to ionizing radiation cell elements of all living organisms. The effect of ionizing radiation on the electrokinetic potential of isolated nuclei of wheat seedlings was studied, which allows us to judge the changes in the magnitude of the surface charge and its role in the functioning of the cellular nuclei. Changes were obtained in the values of the electrokinetic potential in isolated seedlings of irradiated seeds in a electric field. As a result of chain reactions, ionizing radiation changes the content of nuclear fractions, which in turn leads to a decrease in the surface charge and a decrease in the electromobility of nuclei.

Imaging molecules adsorbed onto electrodes under potential control by scanning probe microscopy

1991 ◽  
Vol 49 ◽  
pp. 376-377 ◽  
Author(s):  
N.J. Tao ◽  
J.A. DeRose ◽  
P.I. Oden ◽  
S.M. Lindsay
Keyword(s):  
Surface Charge ◽  
Environmental Effects ◽  
Scanning Probe Microscopy ◽  
Statistical Significance ◽  
Electrochemical Methods ◽  
Surface Structures ◽  
Scanning Probe ◽  
Potential Control ◽  
Afm Imaging ◽  
Special Circumstances

Clemmer and Beebe have pointed out that surface structures on graphite substrates can be misinterpreted as biopolymer images in STM experiments. We have been using electrochemical methods to react DNA fragments onto gold electrodes for STM and AFM imaging. The adsorbates produced in this way are only homogeneous in special circumstances. Searching an inhomogeneous substrate for ‘desired’ images limits the value of the data. Here, we report on a reversible method for imaging adsorbates. The molecules can be lifted onto and off the substrate during imaging. This leaves no doubt about the validity or statistical significance of the images. Furthermore, environmental effects (such as changes in electrolyte or surface charge) can be investigated easily.

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