scholarly journals Circuit Analysis of Ionizing Surface Potential Measurements of Electrolyte Solutions

2020 ◽  
Author(s):  
Tehseen Adel ◽  
Juan Velez-Alvarez ◽  
Anne C. Co ◽  
Heather Allen
Keyword(s):  
Surface Tension ◽  
Surface Potential ◽  
Alpha Decay ◽  
Electrolyte Solutions ◽  
Data Interpretation ◽  
Potential Method ◽  
Circuit Model ◽  
Potential Measurement ◽  
Surface Potential Measurements ◽  
Respective Surface

Surface potential measurement values of the gas-liquid interface can be ambiguous despite the numerous electrochemical approaches used for quantification of the reported values. Calibration and normalization methods can be undefined, which often undermines the robustness of the reported values. Surface potential instrumentation and data interpretation also varies significantly across literature. Here, we propose a circuit model for an ionizing surface potential method based on the alpha decay of a radioactive americium-241 electrode. We evaluate the robustness of the circuit model for quantifying the surface potential at the air-aqueous interface. We then show successful validation of our circuit model through determination of the surface tension of the air-electrolyte interface with comparison to respective surface tension literature values. This validation reveals the reliability of surface potential measurements using the americium-241 ionizing method.<br>

scholarly journals Circuit Analysis of Ionizing Surface Potential Measurements of Electrolyte Solutions

2020 ◽  
Author(s):  
Tehseen Adel ◽  
Juan Velez-Alvarez ◽  
Anne C. Co ◽  
Heather Allen
Keyword(s):  
Surface Tension ◽  
Surface Potential ◽  
Alpha Decay ◽  
Electrolyte Solutions ◽  
Data Interpretation ◽  
Potential Method ◽  
Circuit Model ◽  
Potential Measurement ◽  
Surface Potential Measurements ◽  
Respective Surface

Surface potential measurement values of the gas-liquid interface can be ambiguous despite the numerous electrochemical approaches used for quantification of the reported values. Calibration and normalization methods can be undefined, which often undermines the robustness of the reported values. Surface potential instrumentation and data interpretation also varies significantly across literature. Here, we propose a circuit model for an ionizing surface potential method based on the alpha decay of a radioactive americium-241 electrode. We evaluate the robustness of the circuit model for quantifying the surface potential at the air-aqueous interface. We then show successful validation of our circuit model through determination of the surface tension of the air-electrolyte interface with comparison to respective surface tension literature values. This validation reveals the reliability of surface potential measurements using the americium-241 ionizing method.<br>

Adsorption of linear aliphatic alcohols at the free surface of DMSO: surface tension and surface potential measurements

1997 ◽  
Vol 42 (19) ◽  
pp. 2899-2905 ◽  
Author(s):  
J. Dabkowski ◽  
M. Dabkowska ◽  
R. Pruszkowska-Drachal ◽  
Z. Koczorowski ◽  
S. Trasatti
Keyword(s):  
Surface Tension ◽  
Free Surface ◽  
Surface Potential ◽  
Aliphatic Alcohols ◽  
Surface Potential Measurements

Interfacial Energy Alignment at the ITO/Ultra-Thin Electron Selective Dielectric Layer Interface and Its Effect on the Efficiency of Bulk-Heterojunction Organic Solar Cells

2016 ◽  
Vol 16 (4) ◽  
pp. 3248-3253 ◽  
Author(s):  
Eiji Itoh ◽  
Yoshinori Goto ◽  
Yusuke Saka ◽  
Katsutoshi Fukuda
Keyword(s):  
Contact Resistance ◽  
Active Layer ◽  
Surface Potential ◽  
Organic Solar Cells ◽  
Indium Tin Oxide ◽  
Bulk Heterojunction ◽  
Electronic Charge ◽  
Photovoltaic Properties ◽  
Potential Measurement ◽  
Layer Interface

We have investigated the photovoltaic properties of an inverted bulk heterojunction (BHJ) cell in a device with an indium-tin-oxide (ITO)/electron selective layer (ESL)/P3HT:PCBM active layer/MoOx/Ag multilayered structure. The insertion of only single layer of poly(diallyl-dimethylammonium chloride) (PDDA) cationic polymer film (or poly(ethyleneimine) (PEI) polymeric interfacial dipole layer) and titanium oxide nanosheet (TN) films as an ESL effectively improved cell performance. Abnormal S-shaped curves were observed in the inverted BHJ cells owing to the contact resistance across the ITO/active layer interface and the ITO/PDDA/TN/active layer interface. The series resistance across the ITO/ESL interface in the inverted BHJ cell was successfully reduced using an interfacial layer with a positively charged surface potential with respect to ITO base electrode. The positive dipole in PEI and the electronic charge phenomena at the electrophoretic deposited TN (ED-TN) films on ITO contributed to the reduction of the contact resistance at the electrode interface. The surface potential measurement revealed that the energy alignment by the transfer of electronic charges from the ED-TN to the base electrodes. The insertion of the ESL with a large positive surface potential reduced the potential barrier for the electron injection at ITO/TN interface and it improved the photovoltaic properties of the inverted cell with an ITO/TN/active layer/MoOx/Ag structure.

Formation of Metal Silicide Nanodots on Ultrathin SiO2 for Floating Gate Application

2009 ◽  
Vol 154 ◽  
pp. 95-100 ◽  
Author(s):  
Seiichi Miyazaki ◽  
Mitsuhisa Ikeda ◽  
Katsunori Makihara ◽  
K. Shimanoe ◽  
R. Matsumoto
Keyword(s):  
Surface Potential ◽  
Room Temperature ◽  
Areal Density ◽  
Film Deposition ◽  
Floating Gate ◽  
Metal Silicide ◽  
Kelvin Probe ◽  
Measuring Surface ◽  
Surface Potential Measurements ◽  
Mis Capacitors

We demonstrated a new fabrication method of Pt- and Ni-silicide nanodots with an areal density of the order of ~1011 cm-2 on SiO2 through the process steps of ultrathin metal film deposition on pre-grown Si-QDs and subsequent remote H2 plasma treatments at room temperature. Verification of electrical separation among silicide nanodots was made by measuring surface potential changes due to electron injection and extraction using an AFM/Kelvin probe technique. Photoemission measurements confirm a deeper potential well of silicide nanodots than Si-QDs and a resultant superior charge retention was also verified by surface potential measurements after charging to and discharging. Also, the advantage in many electron storage per silicide nanodot was demonstrated in C-V characteristics of MIS capacitors with silicide nanodots FGs.

Understanding Calcite Wettability Alteration through Surface Potential Measurements and Molecular Simulations

2017 ◽  
Vol 121 (50) ◽  
pp. 28017-28030 ◽  
Author(s):  
Sarah M. Walker ◽  
Maria C. Marcano ◽  
Sooyeon Kim ◽  
Sandra D. Taylor ◽  
Udo Becker
Keyword(s):  
Surface Potential ◽  
Molecular Simulations ◽  
Wettability Alteration ◽  
Surface Potential Measurements

The inversion of surface potential measurements to determine crack size and shape

1988 ◽  
Vol 64 (5) ◽  
pp. 2638-2647 ◽  
Author(s):  
M. P. Connolly ◽  
D. H. Michael ◽  
R. Collins
Keyword(s):  
Surface Potential ◽  
Crack Size ◽  
Size And Shape ◽  
Surface Potential Measurements

scholarly journals Standardization of surface potential measurements of graphene domains

2013 ◽  
Vol 3 (1) ◽  
Author(s):  
Vishal Panchal ◽  
Ruth Pearce ◽  
Rositza Yakimova ◽  
Alexander Tzalenchuk ◽  
Olga Kazakova
Keyword(s):  
Surface Potential ◽  
Surface Potential Measurements
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