Relevant bibliographies by topics / Collisions between nanodroplets

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Academic literature on the topic 'Collisions between nanodroplets'

Author: Grafiati
Published: 21 September 2024
Last updated: 31 July 2025

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Journal articles on the topic "Collisions between nanodroplets"

1

Wang, Yi-Feng, Yi-Bo Wang, Cong-Lei Zhang, et al. "Retraction and bouncing dynamics of nanodroplets upon impact on superhydrophobic surfaces." Physics of Fluids 35, no. 3 (2023): 032012. http://dx.doi.org/10.1063/5.0140920.

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This work investigates the retraction and bouncing dynamics of an impacting low-viscosity nanodroplet on superhydrophobic surfaces via molecular dynamics simulations, aiming to reveal the scaling laws of retraction and bouncing velocities and to establish the relationship between them. The retraction velocity, Vre, is found to scale as Vre ∼ Dmax/ τc,n, where Dmax is the maximum spreading diameter, τc,n = ( D0/ V0) We1/2 Oh1/3 is the inertial-capillary-viscous time, and We and Oh are the Weber number and Ohnesorge number, respectively. The bouncing stems from the collision of the retracting ri
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2

Wang, Yi-Feng, Yi-Bo Wang, Zhi-Hui Cai, et al. "Binary collision dynamics of equal-sized nanodroplets." Journal of Fluid Mechanics 979 (January 11, 2024). http://dx.doi.org/10.1017/jfm.2023.1069.

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Binary nanodroplet collisions have received increasing attention, whilst the identification of collision outcomes and the viscous dissipation mechanism have remained poorly understood. Using molecular dynamics simulations, this study investigates binary nanodroplet collisions over wide ranges of Weber number (We), Ohnesorge number (Oh) and off-centre distances. Coalescence, stretching separation and shattering are identified; however, bouncing, reflexive separation and rotational separation reported for millimetre-sized collisions are not observed, which is attributed to the enhanced viscous e
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3

Chen, Yuxiang, Weizong Wang, Yufeng Cheng, and Guangchuan Zhang. "Deposition and splashing characteristics of ionic liquid nanodroplet impacting surfaces in electrospray." Physics of Fluids 37, no. 1 (2025). https://doi.org/10.1063/5.0246704.

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Nanodroplet collisions with solid surfaces can occur in various applications of electrospray technology. In electrospray propulsion, the deposition and splashing of droplets from the beam onto surfaces are critical to the performance and lifetime of the electrospray thrusters, but little is known about the underlying mechanisms. Therefore, this paper developed a detailed molecular dynamics model to simulate the collisions of an ionic liquid nanodroplet under varying electric fields and charges. The results show that under a 1000 V acceleration voltage, the droplet dissociates into cations and
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4

Tian, Y. Y., M. Y. Ma, Z. Y. Chen, et al. "Collision of nanoscale water droplets: A molecular dynamics study." Physics of Fluids 37, no. 1 (2025). https://doi.org/10.1063/5.0249875.

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Through molecular dynamics (MD) simulations, the collision of two unequal-size droplets with various diameter ratios (Δ) is elaborately scrutinized over a wide range of impact Weber numbers (We). The dynamic evolutions are carefully observed via visual software, which is found to be very different compared with equal-size collisions. The spreading hysteresis is observed over a full spectrum of We for unequal-size collisions because of the merged droplets experiencing wave-capillary propagation, which is commonly seen at the macro-scale. The merged droplet is always directionally moving toward
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5

Xie, Fangfang, Hongzeng Xin, Qianyi Liu, et al. "New insights into impact-induced removal of the deposited droplet." Physics of Fluids 36, no. 11 (2024). http://dx.doi.org/10.1063/5.0240101.

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This paper presents a comprehensive investigation into the collision dynamics of equal and unequal-sized nanodroplets on a flat surface using molecular dynamics simulations, revealing new insights into scaling laws and energy dissipation mechanisms. The simulations, conducted with the Large-Scale Atomic/Molecular Massively Parallel Simulator software, involved an initially stationary droplet on the surface and a suspended droplet with varying diameter ratios (λ) and impact velocities. The results show that at low Weber numbers (We < 24.15), the droplets tend to deposit after impact, whi
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6

Fixot, Brendan, Elsa Louaas, and David A. Bonhommeau. "Collision of rare-gas atoms on helium nanodroplets: Theoretical evidence for an efficient coagulation of heavy rare-gas atoms." Journal of Chemical Physics 161, no. 4 (2024). http://dx.doi.org/10.1063/5.0220027.

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The coagulation of rare-gas atoms (RG = Ne, Ar, Kr, Xe, and Rn) in helium nanodroplets (HNDs) composed of 1000 atoms is investigated by zero-point averaged dynamics where a He–He pseudopotential is used to make the droplet liquid with proper energies. This method reproduces the qualitative abundances of embedded Arn+1 structures obtained by Time-Dependent Density Functional Theory and Ring Polymer Molecular Dynamics for Ar + ArnHe1000 collisions at realistic projectile speeds and impact parameters. More generally, coagulation is found to be much more efficient for heavy rare-gases (Xe and Rn)
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7

Bonhommeau, David A. "Collision of cesium atoms on helium nanodroplets: Unraveling mechanisms for surface capture at experimental velocities." Journal of Chemical Physics 161, no. 18 (2024). http://dx.doi.org/10.1063/5.0231641.

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The collision of cesium atoms on the surface of helium nanodroplets (HNDs) containing 1000 atoms is described by the ZPAD-mPL approach, a zero-point averaged dynamics (ZPAD) method based on a He–He pseudopotential adjusted to better reproduce the total energy of He1000. Four types of collisional patterns were identified depending on the initial projectile speed v0 and impact parameter b. At the lowest speeds (v0 ≲ 250 m s−1), Cs atoms are softly captured by the HND surface, while at the highest ones (v0 ≳ 500–600 m s−1), Cs atoms can travel through the droplet and move away. In between these t
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Dissertations / Theses on the topic "Collisions between nanodroplets"

1

García, Alfonso Ernesto. "Etude théorique de la dynamique de nanogouttes d'hélium superfluide : formation d'agrégats, solvatation d'ions, explosion coulombienne, et nucléation et détection de vortex quantiques." Electronic Thesis or Diss., Université de Toulouse (2023-....), 2024. http://www.theses.fr/2024TLSES069.

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On étudie des processus dynamiques de nanogouttes d'hélium-4 (HND), en relation avec des expériences. Les HND sont des agrégats de centaines à des centaines de milliards d'atomes d'4He aux propriétés remarquables : très basse température (~0.4K), superfluidité, capacité à capturer n'importe quel dopant, interaction faible avec tout atome ou molécule. Les processus étudiés se rangent selon deux axes : caractérisation de propriétés superfluides dans un système de taille finie (nucléation et détection de vortex quantiques), et utilisation de HND comme environnement idéal pour étudier la spectrosc
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