scholarly journals Debunking the essential effect of temperature and voltage on the current curve and the nanotube morphology

RSC Advances ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 429-436
Author(s):  
Tianle Gong ◽  
Jieda Chen ◽  
Pengjin Fang ◽  
Lin Liu ◽  
Chengyuan Li ◽  
...  
Keyword(s):  
Effect Of Temperature ◽  
Time Curve ◽  
Current Time ◽  
Current Curve

In this paper, the change of nanotubes and the current–time curve under different temperature are explained clearly. Also, ginseng shaped nanotubes were found in experiments, which proved the irrationality of field assisted dissolution theory.

Research on the Electro-Exploding Mechanism of Semiconductor Bridge

2013 ◽  
Vol 683 ◽  
pp. 326-332
Author(s):  
Yong Li ◽  
Bin Zhou ◽  
Zhi Chun Qin ◽  
Xin Jia ◽  
Lei Ming Wen
Keyword(s):  
Optical Signal ◽  
Constant Current ◽  
Performance Parameters ◽  
Experimental Basis ◽  
Time Curve ◽  
Current Time ◽  
Plasma Generation ◽  
Current Curve ◽  
Flow Through ◽  
Function Time

In an effort to elucidate the electro-exploding mechanism of semiconductor bridge (SCB), constant current was forced to flow through polysilicon bridge with a resistance about 1 Ω, while the response of voltage and current was measured to obtain its electro-exploding performances. The rise platform and subsequent peak in the current-time curve were observed. It is inferred from the optical signal that the first peak in the current curve results from the plasma generation of the bridge material. The entire electro-exploding process includes Joule heating, melting, vaporizing and plasma generating stage. The laws between performance parameters and the size or shape of bridge area were analyzed; it demonstrated that V-type angles on both ends of bridge were helpful for function time reducing, which provided an experimental basis for SCB design.

scholarly journals Non-enzymatic sensor for determination of glucose based on PtNi nanoparticles decorated graphene

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Risheng Li ◽  
Xu Deng ◽  
Longfei Xia
Keyword(s):  
Limit Of Detection ◽  
High Sensitivity ◽  
Glucose Detection ◽  
Serum Samples ◽  
Time Curve ◽  
Current Time ◽  
Glass Carbon ◽  
Graphene Glass ◽  
Ptni Alloy

Abstract Diabetes has become a universal epidemic in recent years. Herein, the monitoring of glucose in blood is of importance in clinical applications. In this work, PtNi alloy nanoparticles homogeneously dispersed on graphene (PtNi alloy-graphene) was synthesized as a highly effective electrode material for glucose detection. Based on the modified PtNi alloy-graphene/glass carbon (PtNi alloy-graphene/GC) electrode, it is found that the PtNi alloy-graphene/GC electrode exhibited excellent electrocatalytic performance on glucose oxidation. Furthermore, the results from amperometric current–time curve show a good linear range of 0.5–15 mM with the limit of detection of 16 uM (S/N = 3) and a high sensitivity of 24.03 uAmM−1 cm−2. On account of the good selectivity and durability, the modified electrode was successfully applied on glucose detection in blood serum samples.

The Charge-Discharge Properties of the Non-Linear Dielectric Capacitor

2013 ◽  
Vol 547 ◽  
pp. 115-123 ◽  
Author(s):  
Yang Xi Yan ◽  
Yu Jun Feng
Keyword(s):  
Electric Field ◽  
Discharge Current ◽  
Hysteresis Loops ◽  
Ferroelectric Ceramics ◽  
Time Curve ◽  
Charge Voltage ◽  
Current Time ◽  
Electric Field Increase ◽  
Load Discharge ◽  
Charge Discharge

The Charge-discharge Properties of Two Different Non-liner Dielectric Capacitors which Were Made by the La-modified PZST Anti-ferroelectric Ceramics (AFE) Capacitors Were Investigated by Measuring the Hysteresis Loops, None-load Discharge Current-time Curves under Different Charge Voltage, and with 100ohm Discharge Current-time Curve. through Compared these Properties with the Liner Capacitors, it Is Evidence to Summarize the No-liner Properties of the AFE Ceramics. it Was Found that, the AFE Capacitors Imax Is Increasing in No-linear with the Charge Electric Field Increase, but to the Linear Capacitor, the Imax-E Curves is a Beeline. and the AFE Imax-E Curve is Similar to the P-E Curve, and this Paper Explained these.

Research on Short-Circuit Current of Marine AC Power System Based on Combined Programming

2012 ◽  
Vol 433-440 ◽  
pp. 2270-2275
Author(s):  
Chun Lai Zhang ◽  
Hao Liang Wang ◽  
Dian Li Zhao
Keyword(s):  
Power System ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Time Curve ◽  
Current Time ◽  
Ac Power

Based on the combined programming for VB, Excel and MATLAB, the paper makes research on short-circuit current of marine AC power system. This method can not only draw precise calculations, but also has the function of making short-circuit current time curve. And it opens up a new way to study the short-circuit current.

Electrostatic Attachment of Ferrocene Monolayer to a Gold Electrode for Use as Ascorbic Acid Sensor

2012 ◽  
Vol 503-504 ◽  
pp. 1208-1211
Author(s):  
Su Xia Zhang
Keyword(s):  
Ascorbic Acid ◽  
Cyclic Voltammetry ◽  
Gold Electrode ◽  
Fast Response ◽  
Electrochemical Characteristics ◽  
Time Curve ◽  
Current Time ◽  
Electrostatic Assembly ◽  
Simple Preparation ◽  
Ascorbic Acid Sensor

A new ascorbic acid electrochemical sensor was made by electrostatic assembly of ferrocene polymer monolayer on the surface of gold electrode which modified with negatively charged alkanethiol. Cyclic voltammetry and current-time curve were employed to investigate the electrochemical characteristics of the sensor. The ferrocene monolayer modified electrode exhibit excellent electrocatalytic response to the oxidation of ascorbic acid. The anodic overpotential was reduced by about 180 mV compared with that obtained at a bare gold electrode in cyclic voltammetry. Under the optimal conditions, the linear range of the sensor response to ascorbic acid was from 0.05 to 1 mM and the detection limit was 2.710-5 M. The sensor possesses simple preparation, fast response and good electrochemical stability.

Preparation and Electro-Catalytic Performance of Pt-Ag/C as Electro-Reduction Catalysts for H2O2

2012 ◽  
Vol 608-609 ◽  
pp. 870-874
Author(s):  
Zhang Fei Guo ◽  
Dan Zheng
Keyword(s):  
Cyclic Voltammetry ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Catalytic Performance ◽  
Chemical Reduction Method ◽  
Time Curve ◽  
Current Time ◽  
Catalytic Stability ◽  
Nano Catalysts ◽  
Reduction Catalysts

Using impregnation-chemical reduction method, we prepared Pt/C and Pt-Ag/C nano-catalysts. Both of them are with the same platinum content. The composition of the two catalysts was analyzed by XRD technique. The electrochemical performance was studied by cyclic voltammetry and current-time curve. The results show that: the existence of Ag in the Pt-Ag/C catalyst makes Pt crystallinity decreased; compared with Pt/C, Pt-Ag/C has a higher reductive peak current. In addition, both catalysts show the excellent catalytic stability.

scholarly journals The flow in metals under large constant stresses

1914 ◽  
Vol 90 (619) ◽  
pp. 329-342 ◽  
Keyword(s):  
High Temperature ◽  
Viscous Flow ◽  
Low Temperatures ◽  
Effect Of Temperature ◽  
Initial Part ◽  
Time Curve ◽  
Permanent Set ◽  
Pure Metals ◽  
Metallic Wires

§1. The object of this research was to examine the general laws of flow in metallic wires when extended in the region of large permanent set by stresses kept constant throughout the flow. Previously I have investigated in detail the flow for one metal, lead, and put forward some empirical laws; it was desired to see if these laws could be extended to other metals, and especially to investigate the effect of temperature on the nature of the flow. For lead, rise of temperature causes a very rapid increase in the rate of the viscous part of the flow ( loc. cit. ); hence it seemed likely that at very low temperatures the viscous part of the flow would case altogether, although large permanent extensions might be obtainable, and thus lead might behave in this respect as iron behaves at atmospheric temperatures. Similarly iron at a high temperature might behave like lead at atmospheric temperatures. It was also desired to see if very pure metals behaved in the same way as commercial metals, for it has been supposed that the nonviscous character of the initial part of the extension-time curve is due to impurities. Further, the properties of the viscous flow itself were to be investigated in greater detail. Investigation on these points are described in this paper; a summary of the results will be found in §10. Incidentally, in the case of alloys, a type of flow not hitherto observed has been found.

A comparative study of two-step anodization with one-step anodization at constant voltage

2021 ◽  
Author(s):  
Huipeng Zeng ◽  
Chengyuan Li ◽  
Yuxin Dan ◽  
Yishan Lu ◽  
Weidong Sun ◽  
...  
Keyword(s):  
Tio2 Nanotubes ◽  
Ionic Current ◽  
Time Curve ◽  
Average Growth ◽  
Current Time ◽  
Self Organized ◽  
Electronic Current ◽  
Oxygen Bubble ◽  
One Step ◽  
First Time

Abstract Two-step anodization has been widely used because it can produce highly self-organized anodic TiO2 nanotubes, but the differences in morphology and current-time curve of one-step anodization and two-step anodization are rarely reported. Here, one-step anodization and two-step anodization were conducted at different voltages. By comparing the FESEM image of anodic TiO2 nanotubes fabricated by one-step anodization and two-step anodization, it was found that the variation of morphology characteristics is same with voltage. The distinction of morphology and current-time curve between one-step anodization and two-step anodization at the same voltage were analyzed: the nanotube average growth rate and porosity of two-step anodization are greater than that of one-step anodization. In the current-time curve, the duration of stage I and stage II in two-step anodization are significantly shorter than one-step anodization. The traditional field-assisted dissolution theory cannot explain the three stages of the current-time curves and their physics meaning under different voltages in the same fluoride electrolyte. Here, for the first time, the distinction between one-step anodization and two-step anodization was clarified successfully by the theories of ionic current and electronic current and oxygen bubble mould.

Synthesis and Characterization of Zinc Oxide Nanostructured by Electrochemical Deposition Method

2012 ◽  
Vol 576 ◽  
pp. 573-576
Author(s):  
A.S. Rodzi ◽  
M.N. Berhan ◽  
M. Rusop
Keyword(s):  
Zinc Oxide ◽  
Ultrasonic Wave ◽  
Electrochemical Deposition ◽  
Uv Light ◽  
Zno Nanorods ◽  
Driving Frequency ◽  
Deposition Method ◽  
Time Curve ◽  
Current Time ◽  
Electrochemical Deposition Method

Zinc Oxide (ZnO) nanostructured was successfully synthesis by electrochemical deposition method. In this paper present the ZnO nanorods growth in a zinc nitrate/hexamethylenetetramine solution at 90°C with different potential applied. The effect of the growth process was investigated by the cyclic voltametric curve and the current-time curve. The structural of ZnO nanorods evidence that it has single crystalline, a wurtzite crystal structure with markedly preferential orientation along (001) direction was measured x-ray diffraction. The observation of ZnO nanorods was measured on field emission scanning electron microscopy that diameter of ZnO rods were below than 100 nm sizes. Uv-Vis spectrophotometer used to determine the transparency of ZnO nanorods through the UV light. The ZnO nanorods show the average transmittance (<90%) for all potential applied. The piezoelectric property of ZnO nanorods were measuring connected with two electrodes to the metal contact on the film that was driven by an ultrasonic wave. The piezoelectric output current was gained and characteristics curve have been illustrated for different voltage with constant driving frequency of ultrasonic wave at 40 kHz.

Sign in / Sign up

Export Citation Format

Share Document