Deposition of Polypyrrole Onto a Novel Polymer Electrode for Use in a Biomimetic Artificial Excitable Cell Membrane

2010 ◽  
Author(s):  
Christina V. Haden ◽  
Donald A. Jordan ◽  
Pamela M. Norris
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Cell Membrane ◽  
Surface Morphology ◽  
Polymer Membrane ◽  
Electroactive Polymer ◽  
Gating System ◽  
Excitable Cell ◽  
Semi Solid ◽  
Scanning Electron

A novel and inexpensive bucky gel electrode has been investigated for use as the electrode substrate for deposition of polypyrrole. The electroactive polymer membrane was successfully deposited and the surface morphology studied using scanning electron microscopy. Given the properties of the bucky gel electrode and its ability to conduct ions, this work establishes the first step towards a semi-solid ion-gating system to be used in further applications.

Deposition of Polypyrrole Onto Bucky Gel for Use in a Biomimetic Artificial Excitable Cell Membrane

2011 ◽  
Vol 2 (3) ◽  
Author(s):  
Christina V. Haden ◽  
Donald A. Jordan ◽  
Pamela M. Norris
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Cell Membrane ◽  
Surface Morphology ◽  
Electrochemical Cell ◽  
Saturated Calomel Electrode ◽  
Gating System ◽  
Excitable Cell ◽  
Potentiostatic Deposition ◽  
Scanning Electron

A novel and inexpensive bucky gel electrode was investigated for use as the electrode substrate for polypyrrole deposition. Potentiostatic deposition of polypyrrole onto gold and bucky gel electrodes was carried out at +1.2 V versus saturated calomel electrode for 1 h in a standard three-electrode electrochemical cell. The electroactive polypyrrole membrane was successfully deposited onto bucky gel, and its surface morphology studied using scanning electron microscopy. Given the bucky gel’s dual ability to both conduct electricity and ions, this work establishes the first step toward a semisolid ion-gating system to be used in further applications.

Isolasi Dan Karakterisasi Bentonit Alam Menjadi Nanopartikel Monmorillonit

2018 ◽  
Vol 3 (1) ◽  
pp. 12 ◽  
Author(s):  
Zaimahwati Zaimahwati ◽  
Yuniati Yuniati ◽  
Ramzi Jalal ◽  
Syahman Zhafiri ◽  
Yuli Yetri
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Particle Size ◽  
Surface Morphology ◽  
Average Diameter ◽  
Particle Size Analyzer ◽  
Ft Ir ◽  
Scanning Electron ◽  
Sedimentation Processes

<p>Pada penelitian ini telah dilakukan isolasi dan karakterisasi bentonit alam menjadi nanopartikel montmorillonit. Bentonit alam yang digunakan diambil dari desa Blangdalam, Kecamatan Nisam Kabupaten Aceh Utara.  Proses isolasi meliputi proses pelarutan dengan aquades, ultrasonic dan proses sedimentasi. Untuk mengetahui karakterisasi montmorillonit dilakukan uji FT-IR, X-RD dan uji morfologi permukaan dengan Scanning Electron Microscopy (SEM). Partikel size analyzer untuk menganalisis dan menentukan ukuran nanopartikel dari isolasi bentonit alam. Dari hasil penelitian didapat ukuran nanopartikel montmorillonit hasil isolasi dari bentonit alam diperoleh berdiameter rata-rata 82,15 nm.</p><p><em>In this research we have isolated and characterized natural bentonite into montmorillonite nanoparticles. Natural bentonite used was taken from Blangdalam village, Nisam sub-district, North Aceh district. The isolation process includes dissolving process with aquades, ultrasonic and sedimentation processes.  The characterization of montmorillonite, FT-IR, X-RD and surface morphology test by Scanning Electron Microscopy (SEM). Particle size analyzer to analyze and determine the size of nanoparticles from natural bentonite insulation. From the research results obtained the size of montmorillonite nanoparticles isolated from natural bentonite obtained an average diameter of 82.15 nm.</em></p>

Analyse of Indium Loss in Preparation of CuInSe2 Flims for Solar Cells

2011 ◽  
Vol 183-185 ◽  
pp. 1837-1841
Author(s):  
Lei Sha ◽  
Yan Lai Wang ◽  
Shi Liang Ban
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Scanning Electron Microscopy ◽  
Stainless Steel ◽  
Solar Cells ◽  
Surface Morphology ◽  
Energy Dispersive Spectroscopy ◽  
Titanium Substrates ◽  
Selenization Process ◽  
Scanning Electron

CuInSe2 thin films were obtained by selenization of the Cu-In precursors in the atmosphere of Se vapour, which were prepared on stainless steel and titanium substrates by electrodeposition. The films were characterized by XRD, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The respective influences of composition, phases and surface morphology of Cu-In precursors on indium loss were investigated. The results indicate that the indium loss occurs in selenization process because of volatile In2Se arising. The indium loss is less in selenization process of Cu-In precursors contained CuIn, Cu2In and In phases.

scholarly journals A new method of measuring the deformability of the red cell membrane

Blood ◽  
1975 ◽  
Vol 45 (4) ◽  
pp. 581-586 ◽  
Author(s):  
BS Bull ◽  
JD Brailsford
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Cell Membrane ◽  
Large Strains ◽  
Red Cell ◽  
Red Cell Membrane ◽  
Order Of Magnitude ◽  
Method Show ◽  
Elastic Strains ◽  
Scanning Electron

Abstract Red cells moving in a stream of fluid can be arrested by means of a network of fibrin threads. Those cells which fold over a fibrin thread present to view a flat strap-like portion of membrane in which the strain can be easily observed and accurately measured both optically and by scanning electron microscopy. Preliminary results obtained by this method show elastic strains of nearly 300% and indicate that the stress required to produce these large strains is an order of magnitude greater than that reported by other methods.

scholarly journals DESIGN, DEVELOPMENT AND EVALUATION OF DILTIAZEM HYDROCHLORIDE LOADED NANOSPONGES FOR ORAL DELIVERY

2020 ◽  
pp. 116-122
Author(s):  
B. NARASIMHA RAO ◽  
K. RAVINDRA REDDY ◽  
S. RAHATH FATHIMA ◽  
P. PREETHI
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Surface Morphology ◽  
Oral Delivery ◽  
Ethyl Cellulose ◽  
Design Development ◽  
Diltiazem Hydrochloride ◽  
Drug Content ◽  
Set Up ◽  
Scanning Electron

Objective: In the current investigation,nanosponges were set up by emulsion solvent diffusion technique utilizing ethyl cellulose and β-cyclodextrin as polymers. Methods: Diltiazem hydrochloride is taken as model medication for considering different nanosponge formulations. The similarity of different formulation segments was set up by Fourier Transform Infra-Red (FTIR) spectroscopy. Molecular size, surface morphology, entrapment efficiency and drug content of nanosponges were analyzed. Shape and surface morphology of the nanosponges were inspected utilizing scanning electron microscopy. Results: Molecule size of formulated nanosponges was seen in the scope of 186 to 476 nm. Scanning electron microscopy uncovered the permeable, round nature of the nanosponges. The drug content of nanosponges for ethyl cellulose containing formulations was seen as in the scope of 62.25 to 85.11% and for the β-cyclodextrin containing details were seen as in the scope of 65.18-89.67%. The percentage entrapment effectiveness of nanosponges for ethyl cellulose containing formulations were seen as in the scope of 54.18 to 79.49% and for the β-cyclodextrin containing details were seen as in the scope of 58.21-83.45%. In vitro drugreleasefindings demonstrated that at 12 h ethyl cellulose containing formulations discharged the drug in the scope of 57.27-89.09% and for the β-cyclodextrin containing formulations discharged in the scope of 73.94-93.26%. Conclusion: Sustained drugreleasefrom formulations is supported if there is an occurrence of ethyl cellulose in the formulations rather with plans containing β-cyclodextrin.

scholarly journals Dyeing of Polyester with Reactive Dyestuffs Using Nano-Chitosan

2018 ◽  
Vol 13 (2) ◽  
pp. 155892501801300
Author(s):  
Neda Najafzadeh ◽  
Sima Habibi ◽  
Mohammadreza A. Ghasri
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Surface Morphology ◽  
Reactive Dyes ◽  
Color Difference ◽  
Polyester Fabric ◽  
Surface Chemical ◽  
Bending Resistance ◽  
Bending Behavior ◽  
Scanning Electron

The main objective of this work is to investigate the effect of nano-chitosan on the dyeing of polyester fabric with reactive dyes. Polyester fabric was treated with alkali and coated with nano-chitosan. Afterwards all samples were dyed with reactive dyes. The water absorption and bending resistance of pristine polyester, alkaline and chitosan-treated polyester were measured. In order to investigate surface chemical bonding, FTIR/ATR was employed. Surface morphology of fabrics was observed using scanning electron microscopy (SEM). Wettability and bending behavior of the treated polyester increased compared to the untreated one. The color difference between the dyed blank and chitosan-treated samples was estimated using a spectrophotometer. The data obtained shows it is possible to use reactive dyes to dye polyester fabrics finished with nano-chitosan and the resulting fabrics will exhibit acceptable washing and rubbing fastness.

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