Effect of the surface energy of particle materials on the accommodation of gas molecules to the particle surfaces

Haesung Jung; Koohee Han; George W. Mulholland; David Y.H. Pui; Jung Hyeun Kim

doi:10.1016/j.jaerosci.2013.07.007

Effect of the surface energy of particle materials on the accommodation of gas molecules to the particle surfaces

Haesung Jung
, Koohee Han
, George W. Mulholland
, David Y.H. Pui
, Jung Hyeun Kim

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

In this study, the slip correction factor is assessed from the measurements of the electrical mobilities of PSL, SiO₂ and Au nanoparticles under reduced pressure conditions. The asymptotic value (α+β) of the slip correction factor, which is generally used for evaluating the particle drag force, are obtained for three different particle materials, and the values are used to assess the momentum accommodation function. Our experimental results show that the gas molecular slip is strongly dependent on the particle material characteristics. The higher the surface energy of the particle materials (PSL: 0.06J/m², SiO₂: 0.30J/m², and Au: 8.78J/m²), the more diffusive reflections observed in gas molecular collisions with nanoparticles (PSL: 87.3%, SiO₂: 89.2%, and Au: 99.6%).

Original language	English (US)
Pages (from-to)	42-48
Number of pages	7
Journal	Journal of Aerosol Science
Volume	65
DOIs	https://doi.org/10.1016/j.jaerosci.2013.07.007
State	Published - 2013

Bibliographical note

Funding Information:
This work was partly supported by the Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Knowledge Economy (No. 20124010203260 ). It was also partly supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 2012-0003933 ).

Keywords

Accommodation
Differential mobility analyzer
Drag force
Nanoparticles
Slip correction factor
Surface energy

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10.1016/j.jaerosci.2013.07.007

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@article{fd97283deed84498b87328f484c9bd46,

title = "Effect of the surface energy of particle materials on the accommodation of gas molecules to the particle surfaces",

abstract = "In this study, the slip correction factor is assessed from the measurements of the electrical mobilities of PSL, SiO2 and Au nanoparticles under reduced pressure conditions. The asymptotic value (α+β) of the slip correction factor, which is generally used for evaluating the particle drag force, are obtained for three different particle materials, and the values are used to assess the momentum accommodation function. Our experimental results show that the gas molecular slip is strongly dependent on the particle material characteristics. The higher the surface energy of the particle materials (PSL: 0.06J/m2, SiO2: 0.30J/m2, and Au: 8.78J/m2), the more diffusive reflections observed in gas molecular collisions with nanoparticles (PSL: 87.3\%, SiO2: 89.2\%, and Au: 99.6\%).",

keywords = "Accommodation, Differential mobility analyzer, Drag force, Nanoparticles, Slip correction factor, Surface energy",

author = "Haesung Jung and Koohee Han and Mulholland, \{George W.\} and Pui, \{David Y.H.\} and Kim, \{Jung Hyeun\}",

note = "Funding Information: This work was partly supported by the Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Knowledge Economy (No. 20124010203260 ). It was also partly supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 2012-0003933 ).",

year = "2013",

doi = "10.1016/j.jaerosci.2013.07.007",

language = "English (US)",

volume = "65",

pages = "42--48",

journal = "Journal of Aerosol Science",

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TY - JOUR

T1 - Effect of the surface energy of particle materials on the accommodation of gas molecules to the particle surfaces

AU - Jung, Haesung

AU - Han, Koohee

AU - Mulholland, George W.

AU - Pui, David Y.H.

AU - Kim, Jung Hyeun

N1 - Funding Information: This work was partly supported by the Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Knowledge Economy (No. 20124010203260 ). It was also partly supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 2012-0003933 ).

PY - 2013

Y1 - 2013

N2 - In this study, the slip correction factor is assessed from the measurements of the electrical mobilities of PSL, SiO2 and Au nanoparticles under reduced pressure conditions. The asymptotic value (α+β) of the slip correction factor, which is generally used for evaluating the particle drag force, are obtained for three different particle materials, and the values are used to assess the momentum accommodation function. Our experimental results show that the gas molecular slip is strongly dependent on the particle material characteristics. The higher the surface energy of the particle materials (PSL: 0.06J/m2, SiO2: 0.30J/m2, and Au: 8.78J/m2), the more diffusive reflections observed in gas molecular collisions with nanoparticles (PSL: 87.3%, SiO2: 89.2%, and Au: 99.6%).

AB - In this study, the slip correction factor is assessed from the measurements of the electrical mobilities of PSL, SiO2 and Au nanoparticles under reduced pressure conditions. The asymptotic value (α+β) of the slip correction factor, which is generally used for evaluating the particle drag force, are obtained for three different particle materials, and the values are used to assess the momentum accommodation function. Our experimental results show that the gas molecular slip is strongly dependent on the particle material characteristics. The higher the surface energy of the particle materials (PSL: 0.06J/m2, SiO2: 0.30J/m2, and Au: 8.78J/m2), the more diffusive reflections observed in gas molecular collisions with nanoparticles (PSL: 87.3%, SiO2: 89.2%, and Au: 99.6%).

KW - Accommodation

KW - Differential mobility analyzer

KW - Drag force

KW - Nanoparticles

KW - Slip correction factor

KW - Surface energy

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UR - https://www.scopus.com/pages/publications/84881519640#tab=citedBy

U2 - 10.1016/j.jaerosci.2013.07.007

DO - 10.1016/j.jaerosci.2013.07.007

M3 - Article

AN - SCOPUS:84881519640

SN - 0021-8502

VL - 65

SP - 42

EP - 48

JO - Journal of Aerosol Science

JF - Journal of Aerosol Science

ER -

Effect of the surface energy of particle materials on the accommodation of gas molecules to the particle surfaces

Abstract

Bibliographical note

Keywords

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