Kinetic Processes in Vapor Phase Epitaxy

Newman, Nathan; Vahidi, M.

doi:10.1016/b978-0-444-63304-0.00020-2

Cited by 2 publications

(1 citation statement)

References 108 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The different reconstruction techniques also produce dissimilar Au particle morphologies; indeed, Luo et al [34] reported globular, closely packed, Au particles following water vapour-assisted reconstruction, whereas in the present work the islands appear crystallographically facetted for those reconstructed in air, and globular but well-spaced for those reconstructed in vacuo. Such faceting reflects the exposure of specific crystallographic planes, and hence the islands achieving a more stable, low energy state, in a comparable manner to island growth during thin film deposition processes [49]. With respect to imaging of the speckle, the bimodal distribution of pixel intensities achieved is characteristic of successful speckle patterns identified elsewhere [38].…”

Section: Discussion Advances and Benefits Of The Gold Reconstruction mentioning

confidence: 99%

Stable Speckle Patterns for Nano-scale Strain Mapping up to 700 °C

et al. 2017

View full text Add to dashboard Cite

The digital image correlation (DIC) of speckle patterns obtained by vapour-assisted gold remodelling at 200 -350°C has already been used to map plastic strains with submicron resolution. However, it has not so far proved possible to use such patterns for testing at high temperatures. Here we demonstrate how a gold speckle pattern can be made that is stable at 700°C, to study deformation in a commercial TiAl alloy (Ti-45Al-2Nb-2Mn(at%)-0.8 vol% TiB 2 ). The pattern is made up of a uniformly sized random array of Au islands as small as 15 nm in diameter, depending on reconstruction parameters, with a sufficiently small spacing to be suitable for nano-scale, nDIC, strain mapping at a subset size of 60 × 60 nm 2 . It can be used at temperatures up to 700°C for many hours, for high cycle fatigue testing for instance. There is good particle attachment to the substrate. It can withstand ultra-sound cleaning, is thermally stable and has a high atomic number contrast for topography-free backscatter electron imaging.

show abstract

Section: Discussion Advances and Benefits Of The Gold Reconstruction mentioning

confidence: 99%

Stable Speckle Patterns for Nano-scale Strain Mapping up to 700 °C

et al. 2017

View full text Add to dashboard Cite

show abstract

Atomic Layer Deposition of γ‐Al₂O₃ on Hexagonal Boron Nitride: A Hybrid Support for Metallocene Catalysts

Mazhar,

Shehzad,

Al‐harthi

2024

ChemistrySelect

View full text Add to dashboard Cite

Hexagonal boron nitride (hBN), also known as white graphene, has recently gained larger attention due to its unique physical and chemical properties. Owing to its excellent thermal conductivity and stability, hBN has been reported as an effective filler in many polymers. This study explores the potential of hBN as a catalyst support and filler for olefin polymerization. We report the atomic layer deposition (ALD) of γ‐Al2O3 on hydroxyl‐functionalized hBN. The alumina precursor, methylaluminoxane, showed high selectivity, depositing Al species only on the B‐OH sites, while B−O‐O−B sites remained unreacted. The hBN/γ‐Al2O3 hybrid was characterized by Fourier transform infrared (FTIR) spectroscopy, X‐Ray diffraction and transmission electron microscopy (TEM). The deposition of the aluminum over the hBN sheets was confirmed. The hBN/γ‐Al2O3 was used as a support for metallocene catalysts. The supported catalyst complex was highly active and produced ethylene‐propylene polymers with molecular weights up to 10 times higher, as demonstrated by gel permeation chromatography (GPC)

show abstract

Kinetic Processes in Vapor Phase Epitaxy

Cited by 2 publications

References 108 publications

Stable Speckle Patterns for Nano-scale Strain Mapping up to 700 °C

Stable Speckle Patterns for Nano-scale Strain Mapping up to 700 °C

Atomic Layer Deposition of γ‐Al₂O₃ on Hexagonal Boron Nitride: A Hybrid Support for Metallocene Catalysts

Contact Info

Product

Resources

About

Kinetic Processes in Vapor Phase Epitaxy

Cited by 2 publications

References 108 publications

Stable Speckle Patterns for Nano-scale Strain Mapping up to 700 °C

Stable Speckle Patterns for Nano-scale Strain Mapping up to 700 °C

Atomic Layer Deposition of γ‐Al2O3 on Hexagonal Boron Nitride: A Hybrid Support for Metallocene Catalysts

Contact Info

Product

Resources

About

Atomic Layer Deposition of γ‐Al₂O₃ on Hexagonal Boron Nitride: A Hybrid Support for Metallocene Catalysts