The Centrifugal Differential Mobility Analyser – concept and initial validation of a new device for measuring 2D property distributions
<p>Usually for the characterization of nanoparticles, an equivalent property is measured, e.g. the mobility-equivalent diameter. In the case of non-spherical, complex-shaped nanoparticles, one equivalent particle size is not sufficient for a complete characterization. Most of the methods utili...
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| Language: | English |
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Copernicus Publications
2025-01-01
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| Series: | Aerosol Research |
| Online Access: | https://ar.copernicus.org/articles/3/65/2025/ar-3-65-2025.pdf |
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| author | T. N. Rüther D. B. Rasche D. B. Rasche H.-J. Schmid |
| author_facet | T. N. Rüther D. B. Rasche D. B. Rasche H.-J. Schmid |
| author_sort | T. N. Rüther |
| collection | DOAJ |
| description | <p>Usually for the characterization of nanoparticles, an equivalent property is measured, e.g. the mobility-equivalent diameter. In the case of non-spherical, complex-shaped nanoparticles, one equivalent particle size is not sufficient for a complete characterization. Most of the methods utilized to gain deeper insight into the morphology of nanoparticles are very time-consuming and costly or have bad statistics (such as tandem setups or TEM (transmission electron microscopy)/SEM (scanning electron microscopy) images). To overcome these disadvantages, a prototype of a new compact device, the Centrifugal Differential Mobility Analyser (CDMA), was built, which can measure the full 2D distribution of mobility-equivalent and Stokes equivalent diameters by classification in a cylinder gap through electrical and centrifugal forces. An evaluation method to determine the transfer probabilities is developed and used in this work to compare the measurement results with the theory for the pure rotational behaviour (like the Aerodynamic Aerosol Classifier) and the pure electrical behaviour (like the Dynamic Mobility Analyser). In addition, the ideal 2D transfer function was derived using a particle trajectory approach. This 2D transfer function is a prerequisite for obtaining the full 2D particle size distribution from measurements by inversion.</p> |
| format | Article |
| id | doaj-art-8928e5f4786a4decaf0087089a192291 |
| institution | Kabale University |
| issn | 2940-3391 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Aerosol Research |
| spelling | doaj-art-8928e5f4786a4decaf0087089a1922912025-01-29T08:12:14ZengCopernicus PublicationsAerosol Research2940-33912025-01-013657910.5194/ar-3-65-2025The Centrifugal Differential Mobility Analyser – concept and initial validation of a new device for measuring 2D property distributionsT. N. Rüther0D. B. Rasche1D. B. Rasche2H.-J. Schmid3Particle Technology Group, Mechanical Engineering, Paderborn University, Paderborn 33098, GermanyParticle Technology Group, Mechanical Engineering, Paderborn University, Paderborn 33098, GermanyREMBE GmbH Safety+Control, Brilon 59929, GermanyParticle Technology Group, Mechanical Engineering, Paderborn University, Paderborn 33098, Germany<p>Usually for the characterization of nanoparticles, an equivalent property is measured, e.g. the mobility-equivalent diameter. In the case of non-spherical, complex-shaped nanoparticles, one equivalent particle size is not sufficient for a complete characterization. Most of the methods utilized to gain deeper insight into the morphology of nanoparticles are very time-consuming and costly or have bad statistics (such as tandem setups or TEM (transmission electron microscopy)/SEM (scanning electron microscopy) images). To overcome these disadvantages, a prototype of a new compact device, the Centrifugal Differential Mobility Analyser (CDMA), was built, which can measure the full 2D distribution of mobility-equivalent and Stokes equivalent diameters by classification in a cylinder gap through electrical and centrifugal forces. An evaluation method to determine the transfer probabilities is developed and used in this work to compare the measurement results with the theory for the pure rotational behaviour (like the Aerodynamic Aerosol Classifier) and the pure electrical behaviour (like the Dynamic Mobility Analyser). In addition, the ideal 2D transfer function was derived using a particle trajectory approach. This 2D transfer function is a prerequisite for obtaining the full 2D particle size distribution from measurements by inversion.</p>https://ar.copernicus.org/articles/3/65/2025/ar-3-65-2025.pdf |
| spellingShingle | T. N. Rüther D. B. Rasche D. B. Rasche H.-J. Schmid The Centrifugal Differential Mobility Analyser – concept and initial validation of a new device for measuring 2D property distributions Aerosol Research |
| title | The Centrifugal Differential Mobility Analyser – concept and initial validation of a new device for measuring 2D property distributions |
| title_full | The Centrifugal Differential Mobility Analyser – concept and initial validation of a new device for measuring 2D property distributions |
| title_fullStr | The Centrifugal Differential Mobility Analyser – concept and initial validation of a new device for measuring 2D property distributions |
| title_full_unstemmed | The Centrifugal Differential Mobility Analyser – concept and initial validation of a new device for measuring 2D property distributions |
| title_short | The Centrifugal Differential Mobility Analyser – concept and initial validation of a new device for measuring 2D property distributions |
| title_sort | centrifugal differential mobility analyser concept and initial validation of a new device for measuring 2d property distributions |
| url | https://ar.copernicus.org/articles/3/65/2025/ar-3-65-2025.pdf |
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