An organically templated yttrium fluoride with a ‘Super-Diamond’ structure

2007 ◽  
Vol 180 (1) ◽  
pp. 260-264 ◽  
Author(s):  
Nicholas F. Stephens ◽  
Philip Lightfoot
Keyword(s):  
Diamond Structure ◽  
Yttrium Fluoride

An Organically Templated Yttrium Fluoride with a “Super-Diamond” Structure.

ChemInform ◽  
2007 ◽  
Vol 38 (21) ◽  
Author(s):  
Nicholas F. Stephens ◽  
Philip Lightfoot
Keyword(s):  
Diamond Structure ◽  
Yttrium Fluoride

scholarly journals Barium yttrium fluoride based upconversion nanoparticles as dual mode image contrast agents

2021 ◽  
pp. 111937
Author(s):  
Padmaja Parameswaran Nampi ◽  
Alexander Vakurov ◽  
Hema Viswambharan ◽  
Jürgen E. Schneider ◽  
Rik Drummond-Brydson ◽  
...  
Keyword(s):  
Contrast Agents ◽  
Image Contrast ◽  
Upconversion Nanoparticles ◽  
Dual Mode ◽  
Yttrium Fluoride ◽  
Barium Yttrium ◽  
Barium Yttrium Fluoride

Formation of Graphene-on-Diamond Structure by Graphitization of Atomically Flat Diamond (111) Surface

2013 ◽  
Vol 52 (11R) ◽  
pp. 110121 ◽  
Author(s):  
Norio Tokuda ◽  
Makoto Fukui ◽  
Toshiharu Makino ◽  
Daisuke Takeuchi ◽  
Satoshi Yamsaki ◽  
...  
Keyword(s):  
Diamond Structure ◽  
Atomically Flat

Fabrication of GaN/SiC/diamond structure for efficient thermal management of power device

2021 ◽  
Author(s):  
Ryo Kagawa ◽  
Keisuke Kawamura ◽  
Yoshiki Sakaida ◽  
Sumito Ouchi ◽  
Hiroki Uratani ◽  
...  
Keyword(s):  
Thermal Management ◽  
Power Device ◽  
Diamond Structure

The Ordered Bicontinuous Double Diamond Structure in Binary Blends of Diblock Copolymer and Homopolymer.

1989 ◽  
Vol 171 ◽  
Author(s):  
Karen I. Winey ◽  
Edwin L. Thomas
Keyword(s):  
Molecular Weight ◽  
Diblock Copolymer ◽  
Diblock Copolymers ◽  
Composition Range ◽  
Volume Fraction ◽  
Diamond Structure ◽  
Binary Blends ◽  
Resultant Effect ◽  
Strong Segregation ◽  
Double Diamond

ABSTRACTWe report the observation of the ordered bicontinuous double diamond (OBDD) structure in binary blends of poly(styrene-isoprene) diblock copolymer and homopolystyrene. The overall polystyrene volume fraction range is 64 - 67 PSvol% for the OBDD structure in binary blends of a lamellar diblock (SI 27/22) and a homopolymer (14.0 hPS). This composition range is approximately within the polystyrene volume fraction range established for pure diblock copolymers in the strong segregation regime having the OBDD structure. Ordered lamellae are observed at approximately 65 PSvol% when the homopolystyrene molecular weight is greater than the molecular weight of the polystyrene block of the copolymer. This observation is discussed in terms of the decreased degree of mixing between the homopolymer and the corresponding block and the resultant effect on the interfacial curvature.

Heat resistance of the interface in the silicon-on-diamond structure at a temperature of 80 K

2010 ◽  
Vol 37 (5) ◽  
pp. 152-156 ◽  
Author(s):  
D. F. Aminev ◽  
A. Yu. Klokov ◽  
T. I. Galkina ◽  
A. I. Sharkov ◽  
V. G. Ral’chenko
Keyword(s):  
Heat Resistance ◽  
Diamond Structure

scholarly journals Multi-Step Crystallization and Chemical Evolution of Sodium Yttrium Fluoride

2021 ◽  
Author(s):  
Peter Pauzauskie ◽  
Alexander Bard ◽  
R. Greg Felsted ◽  
Abbie Ganas ◽  
Anupum Pant ◽  
...  
Keyword(s):  
Solid Phase ◽  
Nucleation And Growth ◽  
Intermediate Step ◽  
Gradual Change ◽  
Fluoride Ions ◽  
Aqueous Synthesis ◽  
Yttrium Fluoride ◽  
New Perspective ◽  
Step Mechanism ◽  
Step Crystallization

Abstract Two-step crystallization mechanisms based on spinodal decomposition followed by nucleation are commonly observed both in the laboratory and in nature. While this pathway may require chemical reactions, subsequent nucleation and growth are often considered as separate, discrete events from the reaction itself. Recent work has also shown a distinct intermediate step involving the formation of an amorphous aggregate. Here we report a novel four-step mechanism in the aqueous synthesis of sodium yttrium fluoride involving 1) the segregation of aqueous ions into a dense liquid phase, 2) the formation of an amorphous aggregate, 3) nucleation of a cubic YF3 phase, and 4) subsequent solid-state diffusion of sodium and fluoride ions to form a final NaYF4 phase. The final step involves a continuous, gradual change of the solid phase’s chemical stoichiometry from YF3 toward NaYF4. Unlike previously studied nucleation and growth mechanisms, the stoichiometry of the final solid phase evolves throughout the crystallization process rather than being determined at nucleation. This novel four-step mechanism provides a new perspective into the nucleation and growth of many other crystalline materials given the ubiquity of nonstoichiometric compounds in nature.

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