نتایج جستجو برای: transmission electron microscope tem

تعداد نتایج: 567607  

2014
L. M. Gignac

High energy (100-400 keV) scanning electron microscope (SEM) imaging of samples can be performed in the transmission electron microscope (TEM)/scanning TEM (STEM) when the system has secondary electron (SE) and/or backscattered (BSE) electron detector(s) installed. Previously, very high resolution SE imaging has been demonstrated at 200 keV in a STEM with a spherical aberration corrected conden...

1997
P. J. F. HARRIS

High-resolution electron microscopy (HREM) has been widely used in studies of fullerene-related carbons, and in particular has been applied extensively to the study of carbon nanotubes (Iijima, 1991; Ebbesen & Ajayan, 1992) and carbon nanoparticles (Harris et al., 1993; Saito et al., 1993). The purpose of this Note is to draw the attention of workers in this field to the fact that carbon nanotu...

2012
S Löffler

The quantum mechanical scattering of fast electrons on crystals has a long history. Especially in the transmission electron microscope (TEM), electron energy loss spectrometry (EELS) has a wide field of applications [1]. All of these methods have in common that the interpretation of measurements requires a thorough understanding of the theoretical framework and – most often – computer simulatio...

2011
Bo Jiang Weiyan Liu Yongping Bai Yudong Huang Li Liu Jianping Han

Preparation of recording coating on inkjet printing (RC-IJP) media was proposed. The microstructure and roughness of RC-IJP was analyzed by scanning electron microscopy (SEM) and atomic force microscope (AFM). The surface infiltration process of RC-IJP was studied by a liquid infiltration instrument. The distribution of C, O and Si composites on recording coating surface is analyzed by energy d...

2014
Shujing Wu Huaping Sheng Chun Liu Fan Cao Yu Liu He Zheng Dongshan Zhao Jianbo Wang

Solid-state nanopores have been extensively investigated due to many biological engineering and scientific applications, such as for rapid electrical detection and analysis of biopolymers, powerful DNA detection and genome sequencing technology [1-2]. Herein, we demonstrate that faceted nanopores with various shapes can be successfully fabricated in magnesium via focused electron beam (e-beam) ...

2014
S. Yazdi A. Berg T. Kasama M. Beleggia M. T. Borgström

Semiconductor nanowires (NWs) are very promising building blocks for future electronic and optoelectronic devices. Realizing this, nevertheless, requires overcoming several important challenges, such as control and evaluation of doping levels in NWs. Due to the nanoscale nature of NWs, characterization techniques, such as Hall effect measurements and four-point probes, used conventionally for t...

Journal: :Chemical communications 2015
Raymond R Unocic Loïc Baggetto Gabriel M Veith Jeffery A Aguiar Kinga A Unocic Robert L Sacci Nancy J Dudney Karren L More

We demonstrate the ability to apply electron energy loss spectroscopy (EELS) to follow the chemistry and oxidation states of LiMn2O4 and Li4Ti5O12 battery electrodes within a battery solvent. This is significant as the use and importance of in situ electrochemical cells coupled with a scanning/transmission electron microscope (S/TEM) has expanded and been applied to follow changes in battery ch...

Journal: Journal of Nanoanalysis 2018
Mahdi Ranjeh Mehdi Mousavi-Kamazani,

First, crystalline NiFe2O4 powder was synthesized on a nanoscale dimension by a simple one-step coprecipitationchemical route, and then used to produce activated carbon/NiFe2O4 nanocomposite. Thestructure and morphology of the as-prepared composite was characterized by X-ray diffraction (XRD)pattern, transmission electron microscope (TEM) and Fourier transform infrared (FT-IR)...

2012
Domenico Fuoco

In order to study and develop an economical solution to environmental pollution in water, a wide variety of materials have been investigated. Natural zeolites emerge from that research as the best in class of this category. Zeolites are natural materials which are relatively abundant and non biodegradable, economical and serve to perform processes of environmental remediation. This paper contai...

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