scholarly journals Influence of Monomer Concentration on the Morphologies and Electrochemical Properties of PEDOT, PANI, and PPy Prepared from Aqueous Solution

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Shalini Kulandaivalu ◽  
Zulkarnain Zainal ◽  
Yusran Sulaiman
Keyword(s):  
Electron Microscopy ◽  
Electrochemical Properties ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Electrochemical Impedance ◽  
Monomer Concentration ◽  
Lithium Perchlorate ◽  
Sem Images ◽  
Eis Measurements ◽  
Scanning Electron

Poly(3,4-ethylenedioxyhiophene) (PEDOT), polyaniline (PANI), and polypyrrole (PPy) were prepared on indium tin oxide (ITO) substrate via potentiostatic from aqueous solutions containing monomer and lithium perchlorate. The concentration of monomers was varied between 1 and 10 mM. The effects of monomer concentration on the polymers formation were investigated and compared by using Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, scanning electron microscopy (SEM), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS) measurements. FTIR and Raman spectra showed no changes in the peaks upon the increment of the concentration. Based on the SEM images, the increment in monomer concentration gives significant effect on morphologies and eventually affects the electrochemical properties. PEDOT electrodeposited from 10 mM solution showed excellent electrochemical properties with the highest specific capacitance value of 12.8 mF/cm2.

Scanning Electron Microscopy Observation of Interface Between Single Neurons and Conductive Surfaces

2016 ◽  
Vol 16 (4) ◽  
pp. 3383-3387 ◽  
Author(s):  
Toichiro Goto ◽  
Nahoko Kasai ◽  
Rick Lu ◽  
Roxana Filip ◽  
Koji Sumitomo
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Indium Tin Oxide ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Single Neurons ◽  
Sem Images ◽  
Cross Sectional ◽  
Integrated Devices ◽  
Scanning Electron

Interfaces between single neurons and conductive substrates were investigated using focused ion beam (FIB) milling and subsequent scanning electron microscopy (SEM) observation. The interfaces play an important role in controlling neuronal growth when we fabricate neuron-nanostructure integrated devices. Cross sectional images of cultivated neurons obtained with an FIB/SEM dual system show the clear affinity of the neurons for the substrates. Very few neurons attached themselves to indium tin oxide (ITO) and this repulsion yielded a wide interspace at the neuron-ITO interface. A neuron-gold interface exhibited partial adhesion. On the other hand, a neuron-titanium interface showed good adhesion and small interspaces were observed. These results are consistent with an assessment made using fluorescence microscopy. We expect the much higher spatial resolution of SEM images to provide us with more detailed information. Our study shows that the interface between a single neuron and a substrate offers useful information as regards improving surface properties and establishing neuron-nanostructure integrated devices.

scholarly journals The influence of green modification of lignin on the electrochemical properties of biocomposites for industrial applications

2014 ◽  
Vol 10 (5) ◽  
pp. 2683-2693
Author(s):  
Rasha A. Ahmed ◽  
Amal H. Abdel Kader ◽  
Amany M. Fekry
Keyword(s):  
Electron Microscopy ◽  
Electrical Resistivity ◽  
Electrochemical Properties ◽  
Acidic Medium ◽  
Electrochemical Impedance ◽  
Industrial Applications ◽  
Lignin Modification ◽  
Novel Approach ◽  
Modified Lignin ◽  
Scanning Electron

It’s a report on a novel approach; preparation and electrochemical properties of modified lignin. Wax and starch were used as natural, green adhesives for enhancing the electrical resistivity of lignin in acidic medium, forming eco-friendly high insulator biocomposite. Scanning electron microscopy (SEM) was used to characterize the fabricated biocomposite. The modified lignin was characterized using Fourier transform infrared (FTIR), while the electrochemical behavior was examined by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The innovative approach described in this work provides a promising eco- friendly method for lignin modification with highly electrical resistivity and stability with time. 

Preparation and Performance of Polypyrrole Film with Micro-Antennal Morphology for Medical Biology

2009 ◽  
Vol 610-613 ◽  
pp. 1096-1103
Author(s):  
Cheng Lin ◽  
Man Fang Mai ◽  
Zhao Xian Xiong ◽  
Hao Xue ◽  
Hong Qiu
Keyword(s):  
Electron Microscopy ◽  
Electrochemical Properties ◽  
Electrochemical Impedance ◽  
Static Method ◽  
Iron Platinum ◽  
Potential Value ◽  
Polypyrrole Film ◽  
Bioactive Substance ◽  
And Performance ◽  
Scanning Electron

PPy film with micro-antennal morphology was prepared by potentio-static method without any templates directly onto the surfaces of iron, platinum and gold-plated plastic sheets, respectively. Morphology of PPy film was observed with scanning electron microscopy, and its electrochemical properties were determined by means of cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Attention was paid to the influence of reaction time, potential value, types of substrates, types and conconcentrations of electrolyte on the morphology and electrochemical properties of PPy film. Stable PPy film with thriftily long antennae was obtained on different substrates with good electrochemical properties. The film was applied for a prototype of biosensor, in which bioactive substance of glucose oxidase was immobilized.

scholarly journals Indium-Tin-Oxide (ITO) as Stable and Effective Coating Material for Correlative Confocal and Immuno-Scanning Electron Microscopy Studies

2015 ◽  
Vol 21 (S3) ◽  
pp. 1501-1502 ◽  
Author(s):  
Andrea Falqui ◽  
Simona Rodighiero ◽  
Elisa Sogne ◽  
Bruno Torre ◽  
Roberta Ruffilli ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Coating Material ◽  
Scanning Electron

scholarly journals ELECTROCHEMICAL PERFORMANCES AND CORROSION INHIBITION OF AA6061 IN TROPICAL SEAWATER

2017 ◽  
Vol 25 (2) ◽  
pp. 251-259
Author(s):  
R. Rosliza ◽  
H.B. Senin ◽  
W.B. Wan Nik
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Electrochemical Impedance ◽  
Corrosion Current ◽  
Electrochemical Performances ◽  
Double Layer Capacitance ◽  
Sem Images ◽  
Corrosion Rates ◽  
Current Densities ◽  
Scanning Electron

The corrosion performances of AA6061 aluminum alloy in tropical seawater was investigated using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and their morphology was characterized by the scanning electron microscopy (SEM). The results showed that the presence of sodium benzoate as an inhibitor significantly decrease the corrosion current densities (i corr ), corrosion rates and double layer capacitance (C dl ), whilst increasing the polarization resistance (R p ). The scanning electron microscopy (SEM) images indicated that the mechanism of charge transfer and the formation of thin film have been taken place on the specimens. 

scholarly journals Microscopy Methods for Biofilm Imaging: Focus on SEM and VP-SEM Pros and Cons

Biology ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 51
Author(s):  
Michela Relucenti ◽  
Giuseppe Familiari ◽  
Orlando Donfrancesco ◽  
Maurizio Taurino ◽  
Xiaobo Li ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Ion Beam ◽  
Ruthenium Red ◽  
Variable Pressure ◽  
Sem Images ◽  
Advantages And Disadvantages ◽  
Pros And Cons ◽  
Microscopy Techniques ◽  
Scanning Electron

Several imaging methodologies have been used in biofilm studies, contributing to deepening the knowledge on their structure. This review illustrates the most widely used microscopy techniques in biofilm investigations, focusing on traditional and innovative scanning electron microscopy techniques such as scanning electron microscopy (SEM), variable pressure SEM (VP-SEM), environmental SEM (ESEM), and the more recent ambiental SEM (ASEM), ending with the cutting edge Cryo-SEM and focused ion beam SEM (FIB SEM), highlighting the pros and cons of several methods with particular emphasis on conventional SEM and VP-SEM. As each technique has its own advantages and disadvantages, the choice of the most appropriate method must be done carefully, based on the specific aim of the study. The evaluation of the drug effects on biofilm requires imaging methods that show the most detailed ultrastructural features of the biofilm. In this kind of research, the use of scanning electron microscopy with customized protocols such as osmium tetroxide (OsO4), ruthenium red (RR), tannic acid (TA) staining, and ionic liquid (IL) treatment is unrivalled for its image quality, magnification, resolution, minimal sample loss, and actual sample structure preservation. The combined use of innovative SEM protocols and 3-D image analysis software will allow for quantitative data from SEM images to be extracted; in this way, data from images of samples that have undergone different antibiofilm treatments can be compared.

Surface Composition and Electrical and Electrochemical Properties of Freshly Deposited and Acid-Etched Indium Tin Oxide Electrodes

Langmuir ◽  
2007 ◽  
Vol 23 (22) ◽  
pp. 11089-11099 ◽  
Author(s):  
Michael Brumbach ◽  
P. Alex Veneman ◽  
F. Saneeha Marrikar ◽  
Thomas Schulmeyer ◽  
Adam Simmonds ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Surface Composition ◽  
Oxide Electrodes
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