نتایج جستجو برای: scanning impedance microscopy

تعداد نتایج: 325471  

Journal: :ACS nano 2017
Wonsik Choi Eric Seabron Parsian K Mohseni Jeong Dong Kim Tobias Gokus Adrian Cernescu Pascal Pochet Harley T Johnson William L Wilson Xiuling Li

Selective lateral epitaxial (SLE) semiconductor nanowires (NWs), with their perfect in-plane epitaxial alignment, ability to form lateral complex p-n junctions in situ, and compatibility with planar processing, are a distinctive platform for next-generation device development. However, the incorporation and distribution of impurity dopants in these planar NWs via the vapor-liquid-solid growth m...

2017
Emily K. Brooks Mark T. Ehrensberger

Three Mg alloys, Mg-1.34% Ca-3% Zn (MCZ), Mg-1.34% Ca-3% Zn-0.2% Sr (MCZS), and Mg-2% Sr (MS), were examined to understand their bio-corrosion behavior. Electrochemical impedance spectroscopy and polarization scans were performed after 6 days of immersion in cell culture medium, and ion release and changes in media pH were tracked over a 28 day time period. Scanning electron microscopy (SEM) of...

2011
A. Chen J. R. Smith K. L. Duncan R. T. DeHoff K. S. Jones E. D. Wachsman

The impact of La2Zr2O7 !LZO" on interfacial resistance !Rp" at the La0.78Sr0.20MnO3−!/yttria-stabilized zirconia interface was studied upon isothermal sintering at 1200°C for 2–25 h. Quantification of triple phase boundary length was performed by applying focused ion beam/scanning electron microscopy !FIB/SEM" serial-sectioning techniques and classical stereology. Electrochemical impedance spec...

Journal: :Journal of nanoscience and nanotechnology 2009
X Li C Wang L J Li Y Y Zhao H Y Wang Y Yang

The ferrocene/Poly(vinyl pyrrolidone) (PVP) composite membranes have been successfully prepared by using electrospinning and polarization coating techniques, respectively. The composite membranes were characterized by means of SEM (scanning electron microscopy), UV-vis absorption spectra, FT-IR (Fourier transform infrared), XRD (X-ray diffraction) and a radio frequency (RF) impedance/capacitanc...

2006
Haiming Xiao Thomas Reitz

In order to reduce the operating temperature of solid oxide fuel cells (SOFCs), anodesupported cells incorporating thin film (~10 μm) electrolytes in conjunction with anode/electrolyte and cathode/electrolyte interlayers were studied. Anode supported button cells were prepared through a conventional approach and were analyzed via Scanning Electron Microscopy (SEM), Polarization, and Electrochem...

2014
Kamel HADDADI Tuami LASRI

A broadband microwave interferometric technique for scanning near-field microscopy applications is proposed. The method is based on the association of a vector network analyzer, a hybrid coupler, an evanescent microwave coaxial probe and a precise impedance tuner built up with a high precision programmable delay line and a variable motor-driven attenuator. Advantages such as simplicity of opera...

2014
P. Chakraborty Banerjee Ren Ping Woo Sam Matthew Grayson Amrita Majumder R. K. Singh Raman

The protective performance of zeolite coating on AZ91D magnesium alloy was evaluated using potentiodynamic polarisation and electrochemical impedance spectroscopy (EIS) in 0.1 M sodium chloride solution (NaCl). Electrical equivalent circuit (EEC) was developed based upon hypothetical corrosion mechanisms and simulated to correspond to the experimental data. The morphology and the chemical natur...

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