Experimental Evidence for the Anisotropic Ostwald Ripening of β-Silicon Nitride

A model for anisotropic Ostwald ripening was developed using a chemical potential (weighted mean curvature) difference as a driving force for mass-transport. Based on this model, grain growth simulations of silicon nitride during the phase transformation and Ostwald ripening were performed. Comparison with experimental results during the phase transformation suggests that grain growth be controlled by interfacial reaction. Simulations of Ostwald ripening predict that the growth exponent be 3 for the reaction-controlled case, and increases up to 5 as the growth kinetics shifts from reaction-controlled to diffusion-controlled. It was reported that the mean aspect ratio of silicon nitride crystals increased during the phase transformation, and decreased during Ostwald ripening. These behaviors were successfully simulated by this model. The concave depression at the tip of silicon nitride crystal that was experimentally observed. Simulations by the Ostwald ripening model demonstrated that it could be developed when the liquid phase was super-saturated, and further that the tip shape was a function of the liquid concentration.

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Experimental evidence of parasitic shunting in silicon nitride rear surface passivated solar cells

Progress in Photovoltaics Research and Applications ◽

10.1002/pip.420 ◽

2002 ◽

Vol 10 (4) ◽

pp. 271-278 ◽

Cited By ~ 174

Author(s):

Stefan Dauwe ◽

Lutz Mittelstädt ◽

Axel Metz ◽

Rudolf Hezel

Keyword(s):

Solar Cells ◽

Silicon Nitride ◽

Experimental Evidence ◽

Rear Surface

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Substrate colonization by an emulsion drop prior to spreading

Nature Communications ◽

10.1038/s41467-021-26015-2 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Suraj Borkar ◽

Arun Ramachandran

Keyword(s):

Experimental Evidence ◽

Contact Line ◽

Multiphase Flows ◽

Ostwald Ripening ◽

Froth Flotation ◽

Island Growth ◽

Present Experimental Evidence ◽

Drop Phase

AbstractIn classical wetting, the spreading of an emulsion drop on a surface is preceded by the formation of a bridge connecting the drop and the surface across the sandwiched film of the suspending medium. However, this widely accepted mechanism ignores the finite solubility of the drop phase in the medium. We present experimental evidence of a new wetting mechanism, whereby the drop dissolves in the medium, and nucleates on the surface as islands that grow with time. Island growth is predicated upon a reduction in solubility near the contact line due to attractive interactions between the drop and the surface, overcoming Ostwald ripening. Ultimately, wetting is manifested as a coalescence event between the parent drop and one of the islands, which can result in significantly large critical film heights and short hydrodynamic drainage times prior to wetting. This discovery has broad relevance in areas such as froth flotation, liquid-infused surfaces, multiphase flows and microfluidics.

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Experimental Evidence for Two-Dimensional Ostwald Ripening in Semiconductor Nanoplatelets

Chemistry of Materials ◽

10.1021/acs.chemmater.0c01238 ◽

2020 ◽

Vol 32 (7) ◽

pp. 3312-3319 ◽

Cited By ~ 1

Author(s):

Philippe N. Knüsel ◽

Andreas Riedinger ◽

Aurelio A. Rossinelli ◽

Florian D. Ott ◽

Aniket S. Mule ◽

...

Keyword(s):

Experimental Evidence ◽

Ostwald Ripening ◽

Two Dimensional

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How do memory modules differentially contribute to familiarity and recollection?

Behavioral and Brain Sciences ◽

10.1017/s0140525x19001833 ◽

2019 ◽

Vol 42 ◽

Author(s):

Olya Hakobyan ◽

Sen Cheng

Keyword(s):

Recognition Memory ◽

Experimental Evidence ◽

Subjective Experience ◽

Target Article ◽

Memory Modules ◽

Familiarity And Recollection ◽

Memory Contents

Abstract We fully support dissociating the subjective experience from the memory contents in recognition memory, as Bastin et al. posit in the target article. However, having two generic memory modules with qualitatively different functions is not mandatory and is in fact inconsistent with experimental evidence. We propose that quantitative differences in the properties of the memory modules can account for the apparent dissociation of recollection and familiarity along anatomical lines.

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Redox Reactions in Lipid Membranes as a Model for Primordial Energy-Conserving Systems

International Astronomical Union Colloquium ◽

10.1017/s0252921100014950 ◽

1997 ◽

Vol 161 ◽

pp. 437-442

Author(s):

Salvatore Di Bernardo ◽

Romana Fato ◽

Giorgio Lenaz

Keyword(s):

Experimental Evidence ◽

Lipid Membranes ◽

Energy Supply ◽

Redox Reactions ◽

Living Systems ◽

Asymmetric Distribution ◽

Conservation Of Energy ◽

Asymmetrical Distribution ◽

Energy Conserving ◽

Living Organisms

AbstractOne of the peculiar aspects of living systems is the production and conservation of energy. This aspect is provided by specialized organelles, such as the mitochondria and chloroplasts, in developed living organisms. In primordial systems lacking specialized enzymatic complexes the energy supply was probably bound to the generation and maintenance of an asymmetric distribution of charged molecules in compartmentalized systems. On the basis of experimental evidence, we suggest that lipophilic quinones were involved in the generation of this asymmetrical distribution of charges through vectorial redox reactions across lipid membranes.

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