A new thermophoretic precipitator for collection of nanometer-sized aerosol particles

David Gonzalez, Albert G. Nasibulin, Anatoli M. Baklanov, Sergei D. Shandakov, David P. Brown, Paula Queipo, Esko I. Kauppinen

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

A new thermophoretic precipitator (TP) has been designed and used for the collection of nanosized aerosol particles. NaCl and Fe particles, with mean diameters of 55 nm and 3.6 nm, respectively, were used to determine the thermophoretic deposition efficiency as well as the uniformity of the deposition. When the average temperature gradients applied were 2200 K/cm and 2400 K/cm, a high thermophoretic deposition efficiency, close to 100%, was attained at aerosol flow rates below 15 sccm. A gradual decay in the efficiency was observed as the flow rate was increased. Theoretical calculations of particle deposition efficiency were in good agreement with experimental data. The deposition along the TP was shown to be homogenous on a millimeter scale for both NaCl and Fe particles collected on thin foil substrates and microscope grids, respectively. Finally, the thermophoretic precipitator was used to efficiently deposit Fe nanoparticles on a substrate for the subsequent growth of carbon nanotubes.
Original languageEnglish
Pages (from-to)1064-1071
JournalAerosol Science and Technology
Volume39
Issue number11
DOIs
Publication statusPublished - 2005
MoE publication typeA1 Journal article-refereed

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Aerosols
Particles (particulate matter)
aerosol
Flow rate
substrate
Carbon Nanotubes
Substrates
Thermal gradients
temperature gradient
Metal foil
Carbon nanotubes
Microscopes
Deposits
Nanoparticles
particle
rate

Cite this

Gonzalez, D., Nasibulin, A. G., Baklanov, A. M., Shandakov, S. D., Brown, D. P., Queipo, P., & Kauppinen, E. I. (2005). A new thermophoretic precipitator for collection of nanometer-sized aerosol particles. Aerosol Science and Technology, 39(11), 1064-1071. https://doi.org/10.1080/02786820500385569
Gonzalez, David ; Nasibulin, Albert G. ; Baklanov, Anatoli M. ; Shandakov, Sergei D. ; Brown, David P. ; Queipo, Paula ; Kauppinen, Esko I. / A new thermophoretic precipitator for collection of nanometer-sized aerosol particles. In: Aerosol Science and Technology. 2005 ; Vol. 39, No. 11. pp. 1064-1071.
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abstract = "A new thermophoretic precipitator (TP) has been designed and used for the collection of nanosized aerosol particles. NaCl and Fe particles, with mean diameters of 55 nm and 3.6 nm, respectively, were used to determine the thermophoretic deposition efficiency as well as the uniformity of the deposition. When the average temperature gradients applied were 2200 K/cm and 2400 K/cm, a high thermophoretic deposition efficiency, close to 100{\%}, was attained at aerosol flow rates below 15 sccm. A gradual decay in the efficiency was observed as the flow rate was increased. Theoretical calculations of particle deposition efficiency were in good agreement with experimental data. The deposition along the TP was shown to be homogenous on a millimeter scale for both NaCl and Fe particles collected on thin foil substrates and microscope grids, respectively. Finally, the thermophoretic precipitator was used to efficiently deposit Fe nanoparticles on a substrate for the subsequent growth of carbon nanotubes.",
author = "David Gonzalez and Nasibulin, {Albert G.} and Baklanov, {Anatoli M.} and Shandakov, {Sergei D.} and Brown, {David P.} and Paula Queipo and Kauppinen, {Esko I.}",
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Gonzalez, D, Nasibulin, AG, Baklanov, AM, Shandakov, SD, Brown, DP, Queipo, P & Kauppinen, EI 2005, 'A new thermophoretic precipitator for collection of nanometer-sized aerosol particles', Aerosol Science and Technology, vol. 39, no. 11, pp. 1064-1071. https://doi.org/10.1080/02786820500385569

A new thermophoretic precipitator for collection of nanometer-sized aerosol particles. / Gonzalez, David; Nasibulin, Albert G.; Baklanov, Anatoli M.; Shandakov, Sergei D.; Brown, David P.; Queipo, Paula; Kauppinen, Esko I.

In: Aerosol Science and Technology, Vol. 39, No. 11, 2005, p. 1064-1071.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - A new thermophoretic precipitator for collection of nanometer-sized aerosol particles

AU - Gonzalez, David

AU - Nasibulin, Albert G.

AU - Baklanov, Anatoli M.

AU - Shandakov, Sergei D.

AU - Brown, David P.

AU - Queipo, Paula

AU - Kauppinen, Esko I.

PY - 2005

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N2 - A new thermophoretic precipitator (TP) has been designed and used for the collection of nanosized aerosol particles. NaCl and Fe particles, with mean diameters of 55 nm and 3.6 nm, respectively, were used to determine the thermophoretic deposition efficiency as well as the uniformity of the deposition. When the average temperature gradients applied were 2200 K/cm and 2400 K/cm, a high thermophoretic deposition efficiency, close to 100%, was attained at aerosol flow rates below 15 sccm. A gradual decay in the efficiency was observed as the flow rate was increased. Theoretical calculations of particle deposition efficiency were in good agreement with experimental data. The deposition along the TP was shown to be homogenous on a millimeter scale for both NaCl and Fe particles collected on thin foil substrates and microscope grids, respectively. Finally, the thermophoretic precipitator was used to efficiently deposit Fe nanoparticles on a substrate for the subsequent growth of carbon nanotubes.

AB - A new thermophoretic precipitator (TP) has been designed and used for the collection of nanosized aerosol particles. NaCl and Fe particles, with mean diameters of 55 nm and 3.6 nm, respectively, were used to determine the thermophoretic deposition efficiency as well as the uniformity of the deposition. When the average temperature gradients applied were 2200 K/cm and 2400 K/cm, a high thermophoretic deposition efficiency, close to 100%, was attained at aerosol flow rates below 15 sccm. A gradual decay in the efficiency was observed as the flow rate was increased. Theoretical calculations of particle deposition efficiency were in good agreement with experimental data. The deposition along the TP was shown to be homogenous on a millimeter scale for both NaCl and Fe particles collected on thin foil substrates and microscope grids, respectively. Finally, the thermophoretic precipitator was used to efficiently deposit Fe nanoparticles on a substrate for the subsequent growth of carbon nanotubes.

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Gonzalez D, Nasibulin AG, Baklanov AM, Shandakov SD, Brown DP, Queipo P et al. A new thermophoretic precipitator for collection of nanometer-sized aerosol particles. Aerosol Science and Technology. 2005;39(11):1064-1071. https://doi.org/10.1080/02786820500385569