Molecular dynamics simulation on the energy exchanges and adhesion probability of a nano-sized particle colliding with a weakly attractive static surface

Jung, Sung Eun; Suh, Donguk; Yoon, Woong

doi:10.1016/j.jaerosci.2010.05.001

Cited by 20 publications

(16 citation statements)

References 31 publications

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“…However, for nanometersized particles the coefficient of restitution may not be unity and the absolute value is unknown (Ayesh et al, 2010). Studies show that the coefficient of restitution is dependent on the impact velocity as well as the material and surface of a nanoparticle (Sato et al, 2007;Ayesh et al, 2010;Jung et al, 2010;Rennecke and Weber, 2013b). The coefficient of restitution is small for impact velocities close to the critical velocity (Rennecke and Weber, 2013b), which leads to small rebound velocities.…”

Section: Analytical Workmentioning

confidence: 99%

An Overview of Airborne Nanoparticle Filtration and Thermal Rebound Theory

Givehchi

Tan

2014

Aerosol Air Qual. Res.

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This paper provides an overview of recent studies on the filtration of airborne nanoparticles. Classical filtration theory assumes that the efficiency of nanoparticle adhesion is at unity when nanoparticles strike a filter with a Brownian motion. However, it has been pointed out that small nanoparticles may have a sufficiently high impact velocity to rebound from the surface upon collision, a mechanism called thermal rebound. According to thermal rebound theory, the adhesion efficiency of nanoparticles decreases if their size is reduced. However, this phenomenon has not yet been clearly observed in experimental studies; there are still a number of uncertainties associated with the concept of thermal rebound, which is yet to be either proven or disproven. This review paper discusses the findings in the current literature related to thermal rebound theory.

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Section: Analytical Workmentioning

confidence: 99%

An Overview of Airborne Nanoparticle Filtration and Thermal Rebound Theory

Givehchi

Tan

2014

Aerosol Air Qual. Res.

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“…According to the MDS study of Jung et al (2010), the collision process can be divided into two parts: loading phase and unloading phase. In the loading phase, the particle is compressed and deformed.…”

Section: Reasoning For the Choice Of A Soft Particle In Combination Wmentioning

confidence: 99%

“…The length of the loading phase is not much different from the unloading phase. Jung et al (2010) showed that the period of the unloading phase is about 0.5 ps for the 1055-molecule argon particle impacting with a velocity of 160 m/s. The period of atomic lattice vibration of argon is roughly t v ¼h/k B Y$0.6 ps, where h, k B , and Y are Plank constant, Boltzmann constant and Debye temperature, respectively.…”

Section: Reasoning For the Choice Of A Soft Particle In Combination Wmentioning

confidence: 99%

“…In their simulation, the cluster molecules interact via Embedded-atom method (EAM) potential, but the molecules within the target surface were not allowed to move to maintain rigidity. Jung et al (2010) studied the energy exchanges and adhesion probabilities of a nano-sized particle. The Lennard-Jones potential function was applied to the 1055-molecule particle, but the target surface was assumed rigid solid surface.…”

Section: Reasoning For the Choice Of A Soft Particle In Combination Wmentioning

confidence: 99%

“…Furthermore, the nano-sized particle is continuously accelerated before collision due to the attraction energy between the particle and the surface. The impact velocity is much higher than the incident velocity (Jung et al, 2010). In the worst case, the particle is broken into pieces due to high impact energy, even if the incident velocity is not much high.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Applicability of the macro-scale elastic contact theories for the prediction of nano-scaled particle collision with a rigid flat surface under non-adhesive and weakly-adhesive conditions

Jung

Bang

Yoon

2012

Journal of Aerosol Science

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Introduction of a New Technique to Measure the Coefficient of Restitution for Nanoparticles

Schöner

Rennecke

Weber

et al. 2014

Chemie Ingenieur Technik

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A modified single‐stage low pressure impactor is described to measure the coefficient of normal restitution en for nanoparticles. The device is analysed numerically using CFD, and the gas flow inside the structured impaction plate is studied. A formula for the calculation of en is derived and first measurements of en for spherical silver particles are presented together with numerical data obtained from force‐based molecular dynamics simulations. Furthermore, the simulation data for en and the sticking probability are investigated in detail for the elastic, and partly for the plastic impaction regime.

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Molecular dynamics simulation on the energy exchanges and adhesion probability of a nano-sized particle colliding with a weakly attractive static surface

Cited by 20 publications

References 31 publications

An Overview of Airborne Nanoparticle Filtration and Thermal Rebound Theory

An Overview of Airborne Nanoparticle Filtration and Thermal Rebound Theory

Applicability of the macro-scale elastic contact theories for the prediction of nano-scaled particle collision with a rigid flat surface under non-adhesive and weakly-adhesive conditions

Introduction of a New Technique to Measure the Coefficient of Restitution for Nanoparticles

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