scholarly journals Using size-selected gold clusters on graphene oxide films to aid cryo-transmission electron tomography alignment

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Kenton P. Arkill ◽  
Judith M. Mantell ◽  
Simon R. Plant ◽  
Paul Verkade ◽  
Richard E. Palmer
Keyword(s):  
Graphene Oxide ◽  
Electron Tomography ◽  
Oxide Films ◽  
Gold Clusters ◽  
Transmission Electron

Automated electron tomography: from data collection to image processing

1995 ◽  
Vol 53 ◽  
pp. 26-27
Author(s):  
Weiping Liu ◽  
Jennifer Fung ◽  
W.J. de Ruijter ◽  
Hans Chen ◽  
John W. Sedat ◽  
...  
Keyword(s):  
Image Processing ◽  
Data Collection ◽  
Structural Information ◽  
Imaging Technique ◽  
Electron Tomography ◽  
Ccd Camera ◽  
Automated Data Collection ◽  
Full Control ◽  
Transmission Electron ◽  
Amorphous Structures

Electron tomography is a technique where many projections of an object are collected from the transmission electron microscope (TEM), and are then used to reconstruct the object in its entirety, allowing internal structure to be viewed. As vital as is the 3-D structural information and with no other 3-D imaging technique to compete in its resolution range, electron tomography of amorphous structures has been exercised only sporadically over the last ten years. Its general lack of popularity can be attributed to the tediousness of the entire process starting from the data collection, image processing for reconstruction, and extending to the 3-D image analysis. We have been investing effort to automate all aspects of electron tomography. Our systems of data collection and tomographic image processing will be briefly described.To date, we have developed a second generation automated data collection system based on an SGI workstation (Fig. 1) (The previous version used a micro VAX). The computer takes full control of the microscope operations with its graphical menu driven environment. This is made possible by the direct digital recording of images using the CCD camera.

Preparation of biaxially oriented polyamide 6/polyketone/graphene oxide films with enhanced barrier and mechanical behaviors

2021 ◽  
Vol 138 (21) ◽  
pp. 50501
Author(s):  
Fenglong Lin ◽  
Yuejun Liu ◽  
Lijun Song ◽  
Xihai Hao ◽  
Xiaochao Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxide Films ◽  
Polyamide 6 ◽  
Mechanical Behaviors

scholarly journals High-Tribological-Performance Polymer Nanocomposites: An Approach Based on the Superlubricity State of the Graphene Oxide Agglomerates

Polymers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 2237
Author(s):  
Eder H. C. Ferreira ◽  
Angela Aparecida Vieira ◽  
Lúcia Vieira ◽  
Guilhermino J. M. Fechine
Keyword(s):  
Graphene Oxide ◽  
High Viscosity ◽  
Tribological Performance ◽  
Multilayer Graphene ◽  
High Concentration ◽  
Scanning Calorimetry ◽  
Mechanical Reinforcement ◽  
Transmission Electron ◽  
Twin Screw ◽  
Mechanical Tensile

Here, nanocomposites of high-molecular-weight polyethylene (HMWPE) and HMWPE-UHMWPE (80/20 wt.%) containing a low amount of multilayer graphene oxide (mGO) (≤0.1 wt.%) were produced via twin-screw extrusion to produce materials with a higher tribological performance than UHMWPE. Due to the high viscosity of both polymers, the nanocomposites presented a significant concentration of agglomerates. However, the mechanical (tensile) and tribological (volumetric loss) performances of the nanocomposites were superior to those of UHMWPE. The morphology of the nanocomposites was investigated using differential scanning calorimetry (DSC), microtomography, and transmission electron microscopy (TEM). The explanation for these results is based on the superlubricity phenomenon of mGO agglomerates. It was also shown that the well-exfoliated mGO also contained in the nanocomposite was of fundamental importance as a mechanical reinforcement for the polymer. Even with a high concentration of agglomerates, the nanocomposites displayed tribological properties superior to UHMWPE’s (wear resistance up to 27% higher and friction coefficient up to 57% lower). Therefore, this manuscript brings a new exception to the rule, showing that agglomerates can act in a beneficial way to the mechanical properties of polymers, as long as the superlubricity phenomenon is present in the agglomerates contained in the polymer.

Photoinduced Terahertz Conductivity and Carrier Relaxation in Thermal-Reduced Multilayer Graphene Oxide Films

2017 ◽  
Vol 121 (4) ◽  
pp. 2451-2458 ◽  
Author(s):  
Xiao Xing ◽  
Litao Zhao ◽  
Zeyu Zhang ◽  
Liang Fang ◽  
Zhengfu Fan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxide Films ◽  
Multilayer Graphene ◽  
Carrier Relaxation ◽  
Terahertz Conductivity

Formation of uniform reduced graphene oxide films on modified PET substrates using drop-casting method

Particuology ◽  
2014 ◽  
Vol 17 ◽  
pp. 66-73 ◽  
Author(s):  
Chunlin Zhao ◽  
Li Xing ◽  
Junhui Xiang ◽  
Lijie Cui ◽  
Jianbin Jiao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Oxide Films ◽  
Casting Method ◽  
Reduced Graphene

Cryo-scanning transmission electron tomography of vitrified cells

2014 ◽  
Vol 11 (4) ◽  
pp. 423-428 ◽  
Author(s):  
Sharon Grayer Wolf ◽  
Lothar Houben ◽  
Michael Elbaum
Keyword(s):  
Electron Tomography ◽  
Scanning Transmission Electron ◽  
Transmission Electron ◽  
Scanning Transmission

Novel Poly(l-lactide)/graphene oxide films with improved mechanical flexibility and antibacterial activity

2017 ◽  
Vol 507 ◽  
pp. 344-352 ◽  
Author(s):  
Zhijun Yang ◽  
Chen Sun ◽  
Liang Wang ◽  
Huixin Chen ◽  
Ji He ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Oxide Films
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