scholarly journals Three-dimensional Investigation of Ceramic/Metal Heterophase Interfaces by Atom-probe Microscopy

2000 ◽  
Vol 6 (5) ◽  
pp. 445-451 ◽  
Author(s):  
Järg Rüsing ◽  
Jason T. Sebastian ◽  
Olof C. Hellman ◽  
David N. Seidman
Keyword(s):  
Three Dimensional ◽  
Atom Probe ◽  
New Approach ◽  
Probe Microscopy

AbstractThe results of a three-dimensional atom probe (3DAP) analysis, on a subnanometer scale, of a ceramic/metal heterophase interface, MgO/Cu, are presented. Segregation of Ag, from the Cu (Ag) matrix, at MgO/Cu interfaces is investigated and the Gibbsian interfacial excess of silver is determined; the range is 2.33 × 1018 to 5.81 × 1018 m−2. Also, silver segregation at the same MgO/Cu interfaces is analyzed employing a new approach that utilizes a proximity histogram or proxigram.

Efficient sampling for three-dimensional atom probe microscopy data

2003 ◽  
Vol 95 ◽  
pp. 199-205 ◽  
Author(s):  
Olof C. Hellman ◽  
John Blatz du Rivage ◽  
David N. Seidman
Keyword(s):  
Three Dimensional ◽  
Atom Probe ◽  
Probe Microscopy ◽  
Efficient Sampling ◽  
Microscopy Data

Application software for data analysis for three-dimensional atom probe microscopy

2002 ◽  
Vol 327 (1) ◽  
pp. 29-33 ◽  
Author(s):  
Olof Hellman ◽  
Justin Vandenbroucke ◽  
John Blatz du Rivage ◽  
David N Seidman
Keyword(s):  
Data Analysis ◽  
Three Dimensional ◽  
Atom Probe ◽  
Application Software ◽  
Probe Microscopy

A New Approach to the Determination of Concentration Profiles in Atom Probe Tomography

2012 ◽  
Vol 18 (2) ◽  
pp. 359-364 ◽  
Author(s):  
Peter J. Felfer ◽  
Baptiste Gault ◽  
Gang Sha ◽  
Leigh Stephenson ◽  
Simon P. Ringer ◽  
...  
Keyword(s):  
Atom Probe Tomography ◽  
Three Dimensional ◽  
Atom Probe ◽  
Solute Concentration ◽  
Concentration Profiles ◽  
Field Evaporation ◽  
New Approach ◽  
Depth Direction ◽  
Spread Function

AbstractAtom probe tomography (APT) provides three-dimensional analytical imaging of materials with near-atomic resolution using pulsed field evaporation. The processes of field evaporation can cause atoms to be placed at positions in the APT reconstruction that can deviate slightly from their original site in the material. Here, we describe and model one such process—that of preferential retention of solute atoms in multicomponent systems. Based on relative field evaporation probabilities, we calculate the point spread function for the solute atom distribution in the “z,” or in-depth direction, and use this to extract more accurate solute concentration profiles.

Atom probe microscopy of three-dimensional distribution of silicon isotopes in Si28∕Si30 isotope superlattices with sub-nanometer spatial resolution

2009 ◽  
Vol 106 (7) ◽  
pp. 076102 ◽  
Author(s):  
Yasuo Shimizu ◽  
Yoko Kawamura ◽  
Masashi Uematsu ◽  
Kohei M. Itoh ◽  
Mitsuhiro Tomita ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Three Dimensional ◽  
Atom Probe ◽  
Probe Microscopy ◽  
Silicon Isotopes ◽  
Dimensional Distribution

EXTRACTING GEOLOGIC AGES FROM ISOTOPICALLY-DISTINCT NANOSCALE RESERVOIRS OF PB IN DISCORDANT ZIRCON BY ATOM PROBE MICROSCOPY

2016 ◽  
Author(s):  
Emily M. Peterman ◽  
◽  
Steven Reddy ◽  
David W. Saxey ◽  
David R. Snoeyenbos ◽  
...  
Keyword(s):  
Atom Probe ◽  
Probe Microscopy

scholarly journals Exploration of collagen cavitation based on peptide electrolysis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Rui Zhai ◽  
Hui Chen ◽  
Zhihua Shan
Keyword(s):  
Structural Changes ◽  
Preparation Method ◽  
Supporting Electrolyte ◽  
Three Dimensional ◽  
Anode Region ◽  
New Approach ◽  
New Material ◽  
Animal Skin ◽  
Exchange Membrane ◽  
Material Preparation

AbstractElectrochemical modification of animal skin is a new material preparation method and new direction of research exploration. In this study, under the action of the electric field using NaCl as the supporting electrolyte, the effect of electrolysis on Glycyl-glycine(GlyGl), gelatin(Gel) and Three-dimensional rawhide collagen(3DC) were determined. The amino group of GlyGl is quickly eliminated within the anode region by electrolysis isolated by an anion exchange membrane. Using the same method, it was found that the molecular weight of Gel and the isoelectric point of the Gel decreased, and the viscosity and transparency of the Gel solution obviously changed. The electrolytic dissolution and structural changes of 3DC were further investigated. The results of TOC and TN showed that the organic matter in 3DC was dissolved by electrolysis, and the tissue cavitation was obvious. A new approach for the preparation of collagen-based multi-pore biomaterials by electrochemical method was explored.

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