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相关论文: The Transient Growth of Ammonium Chloride Dendrite…

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We report the results of a new method of measuring the capillary length for the dendritic crystal growth of non-faceted materials. This method uses a nearly spherical crystal held near unstable equilibrium in an oscillating temperature…

材料科学 · 物理学 2018-12-19 Andrew Dougherty

We report measurements for the initial stages of sidebranching during the dendritic growth of ammonium chloride from supersaturated aqueous solution. The earliest sidebranches are approximately periodic; they are first evident about $36…

斑图形成与孤子 · 物理学 2019-08-27 Andrew Dougherty

We report detailed shape measurements of the tips of three-dimensional ammonium chloride dendrites grown from supersaturated aqueous solution. For growth at small supersaturation, we compare two different models: parabolic with a…

材料科学 · 物理学 2009-11-10 Andrew Dougherty , Mayank Lahiri

We report a study on the kinetics of drying of a droplet of aqueous gelatin containing sodium chloride. The process of drying recorded on video, clearly shows different regimes of growth leading to a variety of crystalline patterns. Large…

软凝聚态物质 · 物理学 2015-06-23 Moutushi Dutta Choudhury , Tapati Dutta , Sujata Tarafdar

The growth kinetics is studied of free-growing helium crystals within the temperature range 0.5-0.83 K and supersaturations to 10 mbar. For the pressure supersaturations above 0.5 mbar, numerous drastic changes are observed in the growth…

其他凝聚态物理 · 物理学 2022-04-14 V. L. Tsymbalenko

Crystallization represents the prime example of a disorder order transition. In realistic situations, however, container walls and impurities are frequently present and hence crystallization is heterogeneously seeded. Rarely the seeds are…

软凝聚态物质 · 物理学 2019-05-28 Elshad Allahyarov , Kirill Sandomirski , Stefan U. Egelhaaf , Hartmut Löwen

Monte Carlo methods are used to study the phase transition in ammonium chloride from the orientationally ordered $\delta$ phase to the orientationally disordered $\gamma$ phase. An effective pair potential is used to model the interaction…

chem-ph · 物理学 2008-02-03 Robert Q. Topper , David L. Freeman

I describe a new approach to the classification of snow crystal morphologies that focuses on the most common growth behaviors that appear in normal air under conditions of constant applied temperature and water-vapor supersaturation. The…

材料科学 · 物理学 2021-09-02 Kenneth G. Libbrecht

This study investigates the influence of various growth parameters on normal-state resistivity and superconducting transition temperature Tc of granular aluminum films. Specifically, we focus on the effects of oxygen flow and aluminum…

We report a scheme for very significantly accelerating growth of dendritic patterns in diverse liquids, making use of only a few hundred microwatts of laser power in the presence of an efficient absorber like carbon nanotubes (CNTs). The…

We study the transient response of an electrolytic cell subject to a small, suddenly applied temperature increase at one of its two bounding electrode surfaces. An inhomogeneous temperature profile then develops, causing, via the Soret…

化学物理 · 物理学 2019-05-01 Mathijs Janssen , Markus Bier

Metastable vaterite crystals were synthesized by increasing the pH and consequently the saturation states of Ca and CO3 containing solutions using an ammonia diffusion method. SEM and TEM analyses indicate that vaterite grains produced by…

材料科学 · 物理学 2012-10-31 Qiaona Hu , Jiaming Zhang , Henry Teng , Udo Becker

Kinetics of crystal-growth is investigated along the solid-liquid coexistence line for the (100), (110) and (111) orientations of the Lennard-Jones and Weeks-Chandler-Andersen fcc crystal-liquid interface, using non-equilibrium molecular…

统计力学 · 物理学 2015-04-29 Ronald Benjamin , Jürgen Horbach

Polyhydrides have been shown to form novel structures at high pressure, which may be found in the interiors of giant planets. With density functional molecular dynamics simulations we studied the behavior of ammonium polyhydride compounds…

材料科学 · 物理学 2025-12-01 Kyla de Villa , Xiaoyu Wang , Eva Zurek , Burkkhard Militzer

Ice crystals growing in highly supersaturated air at temperatures near -5 C exhibit a distinctive, nonplanar dendritic morphology that has not been previously documented or explained. We examine this structure and identify its most…

材料科学 · 物理学 2009-12-15 Kenneth G. Libbrecht

The growth of quasicrystals, i.e., aperiodic structures with long-range order, seeded from the melt is investigated using a dynamical phase field crystal model. Depending on the thermodynamic conditions, two different growth modes are…

软凝聚态物质 · 物理学 2014-07-31 C. V. Achim , M. Schmiedeberg , H. Löwen

We present a series of experiments investigating the growth of ice crystals from water vapor in the presence of a background gas. We measured growth dynamics at temperatures ranging from -2 C to -25 C, at supersaturations between 0.5 and 30…

材料科学 · 物理学 2008-11-19 Kenneth G. Libbrecht , Helen C. Morrison , Benjamin Faber

Actin growth is a fundamental biophysical process and it is, at the same time, a prototypical example of diffusion-mediated surface growth. We formulate a coupled chemo-mechanical, one-dimensional growth model encompassing both material…

软凝聚态物质 · 物理学 2020-01-03 Rohan Abeyaratne , Eric Puntel , Giuseppe Tomassetti

We have performed numerical simulations of dendritic growth at very low undercoolings in two spatial dimension using a phase-field model. In this regime of growth, the dendrites present sharp corners in the tip region while the trailing…

凝聚态物理 · 物理学 2009-10-28 Jose-Luis Mozos , Hong Guo

We present measurements of the diffusion-limited growth of ice crystals from water vapor at different supersaturation levels in air at a temperature of -15 C. Starting with thin, c-axis ice needle crystals, the subsequent growth…

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