نتایج جستجو برای: electrical conductivity measurement

تعداد نتایج: 657288  

2016
Liang

One of the major challenges towards controlling the transfer of electrical and mechanical properties of nanotubes into nanocomposites is the lack of adequate measurement systems to quantify the variations in bulk properties while the nanotubes were used as the reinforcement material. In this study, we conducted one-way analysis of variance (ANOVA) on thickness and conductivity measurements. By ...

2012
Yao Yao Xiangdong Chen Jinfeng Zhu Baoqing Zeng Zuquan Wu Xiaoyu Li

We investigate the effect of water adsorption on the electrical properties of graphene oxide (GO) films using the direct current (DC) measurement and alternating current (AC) complex impedance spectroscopy. GO suspension synthesized by a modified Hummer's method is deposited on Au interdigitated electrodes. The strong electrical interaction of water molecules with GO films was observed through ...

A. Afsari M.A. Ranaei

In this article, commercially pure copper samples were severely deformed by equal channel angular pressing (ECAP) up to eight passes at room temperature. The effects of severe plastic deformation on the microstructure, mechanical properties, and electrical conductivity of the copper were investigated. The microstructure evolution was followed by optical microscope and field emission scanning el...

Journal: :International Journal of Molecular Sciences 2008

Journal: :international journal of nanoscience and nanotechnology 2014
a. afsari m.a. ranaei

in this article, commercially pure copper samples were severely deformed by equal channel angular pressing (ecap) up to eight passes at room temperature. the effects of severe plastic deformation on the microstructure, mechanical properties, and electrical conductivity of the copper were investigated. the microstructure evolution was followed by optical microscope and field emission scanning el...

Journal: :روش های عددی در مهندسی (استقلال) 0
احمد نصیر احمدی a. nasirahmadi لیلا استحقاری و علی اکبر سودی l. estehghari and a. a. soudi

the compounds, lanthanium chromite, lanthanium magnetite and lanthanium ferric oxide were prepared through sol-gel methods in powdered form, then calcinated, peletized, and sintered at various temperatures. electrical conductivity of these compounds was measured at various temperatures. the effectiveness of strontium as a dopant on electrical conductivity was also investigated. electrical condu...

2002
Yang Ju Kojiro Inoue Masumi Saka Hiroyuki Abé

We present a method for quantitative measurement of electrical conductivity of semiconductor wafers in a contactless fashion by using millimeter waves. A focusing sensor was developed to focus a 110 GHz millimeter wave beam on the surface of a silicon wafer. The amplitude and the phase of the reflection coefficient of the millimeter wave signal were measured by which electrical conductivity of ...

2008
Urka Kropf Mojca Jamnik Jasna Bertoncelj Terezija Golob

Mass fraction of ash is a quality criterion for determining the botanical origin of honey. At present, this parameter is generally being replaced by the measurement of electrical conductivity (k). The value k depends on the ash and acid content of honey; the higher their content, the higher the resulting conductivity. A linear regression model for the relationship between ash and electrical con...

2001
D. Kovačić A. Šantić

In Electrical Impedance Tomography (EIT) measurement sinusoidal currents are applied on a surface of the human body and voltage response is measured in order to reconstruct conductivity distribution in a body cross-section. We have constructed an experimental system for EIT measurement based on voltage response to short current pulses. In this case resistive components of body impedance are mea...

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