An Investigation of Au-Ag Interface Formed by Cold Welding Using Focused Ion Beam/Transmission Electron Microscopy

2006 ◽  
Vol 965 ◽  
Author(s):  
Yifang Cao ◽  
Nan Yao ◽  
Kevin McIlwrath ◽  
Jikou Zhou ◽  
Gabriel Osinkolu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Dust Particles ◽  
Cold Welding ◽  
Transmission Electron ◽  
Beam Transmission

ABSTRACTThis paper reports the recent results of a transmission electron microscopy study of cold-welded and e-beam deposited Au-Ag interfaces. Dust particles were observed to be embedded between the cold-welded interfaces. These are shown to amplify the defect regions caused by surface asperities. Electron energy loss spectroscopy (EELS) analysis revealed that there was no significant diffusion zone across the cold welding interface. However, sub-micron mechanical twining structures were revealed by transmission electron microscopy (TEM) analyses. These were found to penetrate through both the cold-welded and control Au-Ag interfaces, but with different orientations.

scholarly journals Transmission Electron Microscopy Study on the Crystallization of Ion Beam Assisted Deposited CoFeB/MgO/CoFeB Magnetic Tunnel Junctions with Tantalum Capping Layer

2011 ◽  
Vol 17 (S2) ◽  
pp. 1860-1861
Author(s):  
R Petrova ◽  
R Ferreira ◽  
S Cardoso ◽  
P Freitas ◽  
S McVitie ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Tunnel Junctions ◽  
Ion Beam ◽  
Magnetic Tunnel Junctions ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Transmission Electron Microscopy Study ◽  
Capping Layer ◽  
Transmission Electron

Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.

Optimal Sample Preparation to Characterize Corrosion in Historical Photographs with Analytical TEM

2014 ◽  
Vol 20 (5) ◽  
pp. 1585-1590
Author(s):  
Eva Grieten ◽  
Joost Caen ◽  
Dominique Schryvers
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Metallic Nanoparticles ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Soft Matrix ◽  
Transmission Electron ◽  
Traditional Preparation ◽  
Beam Transmission ◽  
Historical Photographs

AbstractAn alternative focused ion beam preparation method is used for sampling historical photographs containing metallic nanoparticles in a polymer matrix. We use the preparation steps of classical ultra-microtomy with an alternative final sectioning with a focused ion beam. Transmission electron microscopy techniques show that the lamella has a uniform thickness, which is an important factor for analytical transmission electron microscopy. Furthermore, the method maintains the spatial distribution of nanoparticles in the soft matrix. The results are compared with traditional preparation techniques such as ultra-microtomy and classical focused ion beam milling.

scholarly journals Internal Structure of Asian Dust Particles over the Western North Pacific: Analyses Using Focused Ion Beam and Transmission Electron Microscopy

Atmosphere ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 78 ◽  
Author(s):  
Sayako Ueda ◽  
Yusuke Miki ◽  
Hiroki Kato ◽  
Kazuhiko Miura ◽  
Hiroyasu Nakayama ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
North Pacific ◽  
Western North Pacific ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Asian Dust ◽  
Dust Particles ◽  
Elemental Distribution ◽  
Transmission Electron

Mineral dust aerosols, which comprise multiple mineral species, are transported far from their source desert areas to the open ocean. After an Asian dust outflow event was observed over a marine boundary layer in the western North Pacific on February 29, 2012 on research vessel (R/V) Hakuho Maru, two dust particles of about 6 μm diameter were analyzed. First, they were sliced by using a focused ion beam (FIB). Their mineralogical structures and the elemental distribution of their cross-sections were subsequently analyzed with the use of transmission electron microscopy (TEM) and energy-dispersive X ray spectrometry (EDS). These analyses revealed that the dust particles consisted mainly of calcite and silica. Furthermore, Fe-containing domains were found in the submicrometer area surrounded by calcite and silica. A sulfur-containing domain that co-exists with calcium was found in a small domain near the particle surface, but no clear sign of atmospheric aging was found in most of the calcite domain. The inhomogeneous particle structure implies that the dissolution of iron and calcite in dust particles after ocean deposition depends on the physical structures of particles and their degree of aging according to atmospheric conditions during transport. Those factors must be adequately treated when estimating Asian dust effects on marine primary production.

Sign in / Sign up

Export Citation Format

Share Document