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Determination of the Crystal Structure of Gamma-Alumina by Electron Diffraction and Electron Energy-Loss Spectroscopy
Henry O. Ayoola, Cecile S. Bonifacio, Matthew T. Curnan, Stephen D. House, Meng Li, Joshua Kas, John J. Rehr, Eric A. Stach, Wissam A. Saidi, Judith C. Yang
Journal: Microscopy and Microanalysis / Volume 25 / Issue S2 / August 2019
Published online by Cambridge University Press: 05 August 2019, pp. 2036-2037
Print publication: August 2019
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Correlative Structure-Bonding and Stability Studies of Pt/γ-Al2O3 Catalysts
Henry O. Ayoola, Qing Zhu, Cecile S. Bonifacio, Matthew P. McCann, Matthew T. Curnan, Stephen D. House, Joshua Kas, John J. Rehr, Eric A. Stach, Wissam A. Saidi, Judith C. Yang
Journal: Microscopy and Microanalysis / Volume 24 / Issue S1 / August 2018
Published online by Cambridge University Press: 01 August 2018, pp. 1644-1645
Print publication: August 2018
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Computationally Assisted STEM and EXAFS Characterization of Tunable Rh/Au and Rh/Ag Bimetallic Nanoparticle Catalysts
Stephen D. House, Cecile S. Bonifacio, Janis Timoshenko, Pranaw Kunal, Haiqin Wan, Zhiyao Duan, Hao Li, Judith C. Yang, Anatoly I. Frenkel, Simon M. Humphrey, Richard M. Crooks, Graeme A. Henkelman
Journal: Microscopy and Microanalysis / Volume 23 / Issue S1 / July 2017
Published online by Cambridge University Press: 04 August 2017, pp. 2030-2031
Print publication: July 2017
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Comparison of Spinel and Monoclinic Crystal Structures of γ-Al2O3 for Simulation of Electron Energy Loss Spectra
Henry O. Ayoola, Cecile S. Bonifacio, Qing Zhu, Dong Su, Joshua Kas, John J. Rehr, Eric A. Stach, Wissam A. Saidi, Judith C. Yang
Journal: Microscopy and Microanalysis / Volume 23 / Issue S1 / July 2017
Published online by Cambridge University Press: 04 August 2017, pp. 2020-2021
Print publication: July 2017
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EBSD and TEM Microstructural Studies of New Fuel Cladding in Generation IV Sodium-cooled Fast Nuclear Reactors
Pawel Nowakowski, Cecile S. Bonifacio, Michael J. Campin, Mary L. Ray, Paul E. Fischione, Stéphane Mathieu
Journal: Microscopy and Microanalysis / Volume 23 / Issue S1 / July 2017
Published online by Cambridge University Press: 04 August 2017, pp. 2224-2225
Print publication: July 2017
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Structural Change of a Cu/ZnO Catalyst under Methanol Observed by ETEM
Hao Chi, Cecile S. Bonifacio, Christopher M. Andolina, Eric A. Stach, Gotz Veser, Judith C. Yang
Journal: Microscopy and Microanalysis / Volume 23 / Issue S1 / July 2017
Published online by Cambridge University Press: 04 August 2017, pp. 2100-2101
Print publication: July 2017
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A Small Spot, Inert Gas, Ion Milling Process as a Complementary Technique to Focused Ion Beam Specimen Preparation
Paul E. Fischione, Robert E.A. Williams, Arda Genç, Hamish L. Fraser, Rafal E. Dunin-Borkowski, Martina Luysberg, Cecile S. Bonifacio, András Kovács
Journal: Microscopy and Microanalysis / Volume 23 / Issue 4 / August 2017
Published online by Cambridge University Press: 19 June 2017, pp. 782-793
Print publication: August 2017
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This paper reports on the substantial improvement of specimen quality by use of a low voltage (0.05 to ~1 keV), small diameter (~1 μm), argon ion beam following initial preparation using conventional broad-beam ion milling or focused ion beam. The specimens show significant reductions in the amorphous layer thickness and implanted artifacts. The targeted ion milling controls the specimen thickness according to the needs of advanced aberration-corrected and/or analytical transmission electron microscopy applications.

Environmental TEM Studies of CoMn nanoalloys as Model Fischer-Tropsch Catalysts
Cecile S. Bonifacio, Nikos Liakakos, Miquel Salmeron, Judith C. Yang
Journal: Microscopy and Microanalysis / Volume 22 / Issue S3 / July 2016
Published online by Cambridge University Press: 25 July 2016, pp. 728-729
Print publication: July 2016
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Thermal Stability Study of Classically Immiscible Rh-Ag Alloy Nanoparticles byin situTEM
Cecile S. Bonifacio, Pranaw Kunal, Haiqin Wan, Simon M. Humphrey, Judith C. Yang
Journal: Microscopy and Microanalysis / Volume 22 / Issue S3 / July 2016
Published online by Cambridge University Press: 25 July 2016, pp. 820-821
Print publication: July 2016
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In situ Studies of the Reaction-Driven Restructuring of Ni-Co Core-Shell Nanoparticles
Cecile S. Bonifacio, Huolin L. Xin, Sophie Carenco, Miquel Salmeron, Eric A. Stach, Judith C. Yang
Journal: Microscopy and Microanalysis / Volume 21 / Issue S3 / August 2015
Published online by Cambridge University Press: 23 September 2015, pp. 637-638
Print publication: August 2015
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Investigation of the Structural and Electronic Properties of Pt/γ-Al2O3, a Model Catalyst System
Cecile S. Bonifacio, Qing Zhu, Dong Su, Fernando Vila, Henry O. Ayoola, Stephen D. House, Josh Kas, John J. Rehr, Eric A. Stach, Wissam A. Saidi, Judith C. Yang
Journal: Microscopy and Microanalysis / Volume 21 / Issue S3 / August 2015
Published online by Cambridge University Press: 23 September 2015, pp. 1655-1656
Print publication: August 2015
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Atomic-scale Characterization of Restructured PtCu Nanocubes
Cecile S. Bonifacio, Junjun Shan, Franklin(Feng) Tao, Judith C. Yang
Journal: Microscopy and Microanalysis / Volume 21 / Issue S3 / August 2015
Published online by Cambridge University Press: 23 September 2015, pp. 1067-1068
Print publication: August 2015
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In-situ TEM Investigation of Reduction-Oxidation Reactions during Densification of Iron Oxide Nanoparticles
Cecile S. Bonifacio, K. Das Gautom, Ian M. Kennedy, Klaus van Benthem
Journal: Microscopy and Microanalysis / Volume 20 / Issue S3 / August 2014
Published online by Cambridge University Press: 27 August 2014, pp. 1558-1559
Print publication: August 2014
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Thermal Stability Study of Ni-Co Core-Shell Nanoparticles by in situ TEM
Cecile S. Bonifacio, Sophie Carenco, Miquel Salmeron, Judith C. Yang
Journal: Microscopy and Microanalysis / Volume 20 / Issue S3 / August 2014
Published online by Cambridge University Press: 27 August 2014, pp. 616-617
Print publication: August 2014
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In situ transmission electron microscopic investigations of reduction-oxidation reactions during densification of nickel nanoparticles
Misa Matsuno, Cecile S. Bonifacio, Jorgen F. Rufner, Andrew M. Thron, Troy B. Holland, Amiya K. Mukherjee, Klaus van Benthem
Journal: Journal of Materials Research / Volume 27 / Issue 18 / 28 September 2012
Published online by Cambridge University Press: 16 August 2012, pp. 2431-2440
Print publication: 28 September 2012
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The consolidation of crystalline powders to obtain dense microstructures is typically achieved through a combination of volume and grain boundary diffusion. In situ transmission electron microscopy was utilized to study neck formation between adjacent nickel particles during the early stages of sintering. It was found that the presence of carbon during consolidation of Ni lowers the reduction temperature of nickel oxides on the particle surface and therefore has the potential to accelerate consolidation. In the absence of carbon, the surface oxides remain present during the early stage of sintering and neck formation between particles is limited by self-diffusion of nickel through the oxide layer. This study provides direct experimental evidence that corroborates related earlier hypotheses of self-cleaning on the surface of the nanoparticles that precedes neck formation and growth.

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Determination of the Crystal Structure of Gamma-Alumina by Electron Diffraction and Electron Energy-Loss Spectroscopy

Correlative Structure-Bonding and Stability Studies of Pt/γ-Al2O3 Catalysts

Computationally Assisted STEM and EXAFS Characterization of Tunable Rh/Au and Rh/Ag Bimetallic Nanoparticle Catalysts

Comparison of Spinel and Monoclinic Crystal Structures of γ-Al2O3 for Simulation of Electron Energy Loss Spectra

EBSD and TEM Microstructural Studies of New Fuel Cladding in Generation IV Sodium-cooled Fast Nuclear Reactors

Structural Change of a Cu/ZnO Catalyst under Methanol Observed by ETEM

A Small Spot, Inert Gas, Ion Milling Process as a Complementary Technique to Focused Ion Beam Specimen Preparation

Environmental TEM Studies of CoMn nanoalloys as Model Fischer-Tropsch Catalysts

Thermal Stability Study of Classically Immiscible Rh-Ag Alloy Nanoparticles byin situTEM

In situ Studies of the Reaction-Driven Restructuring of Ni-Co Core-Shell Nanoparticles

Investigation of the Structural and Electronic Properties of Pt/γ-Al2O3, a Model Catalyst System

Atomic-scale Characterization of Restructured PtCu Nanocubes

In-situ TEM Investigation of Reduction-Oxidation Reactions during Densification of Iron Oxide Nanoparticles

Thermal Stability Study of Ni-Co Core-Shell Nanoparticles by in situ TEM

In situ transmission electron microscopic investigations of reduction-oxidation reactions during densification of nickel nanoparticles

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15 results