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Pebble accretion is a promising process for decreasing growth timescales of planetary cores, allowing gas giants to form at wide orbital separations. However, nebular turbulence can reduce the efficiency of this gas-assisted growth. We…

地球与行星天体物理 · 物理学 2018-07-18 M. M. Rosenthal , R. A. Murray-Clay , H. B. Perets , N. Wolansky

A model for gas bubble behavior in irradiated amorphous $U_3Si_2$ is generalized to take into account local influence of sinks for point defects and gas atoms as far as defect clustering resulting in growth of dislocation loops. A…

统计力学 · 物理学 2021-12-30 V. O. Kharchenko , D. O. Kharchenko , O. M. Shchokotova , V. V. Kupriienko , Lu Wu

In wet liquid foams, slow diffusion of gas through bubble walls changes bubble pressure, volume and wall curvature. Large bubbles grow at the expenses of smaller ones. The smaller the bubble, the faster it shrinks. As the number of bubbles…

The development of a bubble plume from a vertical gas-evolving electrode is driven by buoyancy and hydrodynamic bubble dispersion. This canonical fluid mechanics problem is relevant for both thermal and electrochemical processes. We adopt a…

流体动力学 · 物理学 2024-11-20 N. Valle , J. W. Haverkort

We report on the nucleation of bubbles on solids that are gently rubbed against each other in a liquid. The phenomenon is found to depend strongly on the material and roughness of the solid surfaces. For a given surface, temperature, and…

流体动力学 · 物理学 2016-04-18 Sander Wildeman , Henri Lhuissier , Chao Sun , Detlef Lohse , Andrea Prosperetti

Recent research has revealed several different techniques for nanoscopic gas nucleation on submerged surfaces, with findings seemingly in contradiction with each other. In response to this, we have systematically investigated the occurrence…

流体动力学 · 物理学 2011-09-09 James R. T. Seddon , E. Stefan Kooij , Bene Poelsema , Harold J. W. Zandvliet , Detlef Lohse

We consider two spatially flat Friedmann-Robertson-Walker spacetimes divided by a time-like thin shell in the nontrivial case in which the inner region of finite extension contains radiation and the outer region is filled with dust. We will…

广义相对论与量子宇宙学 · 物理学 2015-03-19 R. Casadio , A. Orlandi

A microscopic bubble of soluble gas always dissolves in finite time in an under-saturated fluid. This diffusive process is driven by the difference between the gas concentration near the bubble, whose value is governed by the internal…

流体动力学 · 物理学 2018-03-21 Sébastien Michelin , Etienne Guérin , Eric Lauga

The duality between deformations of elastic bodies and non-inertial flows in viscous liquids has been a guiding principle in decades of research. However, this duality is broken when a spheroidal or other doubly-curved liquid film is…

软凝聚态物质 · 物理学 2023-07-20 Benny Davidovitch , Avraham Klein

The growth of surface plasmonic microbubbles in binary water/ethanol solutions is experimentally studied. The microbubbles are generated by illuminating a gold nanoparticle array with a continuous wave laser. Plasmonic bubbles exhibit…

Under continuous laser irradiation, noble metal nanoparticles immersed in water can quickly heat up, leading to the nucleation of so-called plasmonic bubbles. In this work, we want to further understand the bubble nucleation and growth…

Motivated by the dynamics of microbubbles near catalytic surfaces in bubble-powered microrockets, we consider theoretically the growth of a free spherical bubble near a flat no-slip surface in a Stokes flow. The flow at the bubble surface…

流体动力学 · 物理学 2018-12-05 Sebastien Michelin , Giacomo Gallino , Francois Gallaire , Eric Lauga

In first-order cosmological phase transitions, the asymptotic velocity of expanding bubbles is of crucial relevance for predicting observables like the spectrum of stochastic gravitational waves, or for establishing the viability of…

高能物理 - 唯象学 · 物理学 2021-03-22 Shyam Balaji , Michael Spannowsky , Carlos Tamarit

We carry out a detailed orbit analysis of gravitational potentials selected at different times from an evolving self-consistent model galaxy consisting of a two-component disk (stars+gas) and a live halo. The results are compared with a…

天体物理学 · 物理学 2009-10-30 I. Berentzen , C. H. Heller , I. Shlosman , K. J. Fricke

Spatially resolved electron energy-loss spectroscopy (EELS) in a scanning transmission electron microscope (STEM) has been used to investigate as fluidic phase in nanoubbles embedded in a metallic Pd90Pt10 matrix. Using the 1s->2p…

材料科学 · 物理学 2016-08-14 D. Taverna , M. Kociak , O. Stéphan , A. Fabre , E. Finot , B. Décamps , C. Colliex

When two bubbles submerged in a liquid are brought closely together, the intermediate liquid film separating the bubbles begins to drain. Once the film ruptures, the bubbles coalesce and form a neck that expands with time. The dynamics of…

流体动力学 · 物理学 2023-05-03 Alexandros T. Oratis , Vincent Bertin , Jacco H. Snoeijer

Surface nanobubbles are stable gaseous phases in liquids that form on solid substrates. While their existence has been confirmed, there are many open questions related to their formation and dissolution processes along with their structures…

流体动力学 · 物理学 2022-04-20 Zhizhao Che , Panagiotis E. Theodorakis

Galactic winds are a common phenomenon in starburst galaxies in the local universe as well as at higher redshifts. Their sources are superbubbles driven by sequential supernova explosions in star forming regions, which carve out large holes…

星系天体物理 · 物理学 2014-02-04 Verena Baumgartner , Dieter Breitschwerdt

This work focuses on the dissolution of a train of unconfined bubbles in cylindrical microchannels. We investigate how the mass transfer is affected by the channel and bubble sizes, distance between bubbles, diffusivity, superficial…

流体动力学 · 物理学 2019-04-25 Javier Rivero-Rodriguez , Benoit Scheid

Bubble nucleation in water induced by boiling, gas supersaturation or cavitation usually originates from pre-existing gas cavities trapped into solid defects. Even though the destabilization of such gas pockets, called nuclei, has been…

流体动力学 · 物理学 2020-02-19 Adrien Bussonnière , Qingxia Liu , Peichun Amy Tsai