A radial differential mobility analyzer for the size-classification of gas-phase synthesized nanoparticles at low pressures
Data(s) |
2014
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Resumo |
Differential mobility analyzers (DMAs) are commonly used to generate monodisperse nanoparticle aerosols. Commercial DMAs operate at quasi-atmospheric pressures and are therefore not designed to be vacuum-tight. In certain particle synthesis methods, the use of a vacuum-compatible DMA is a requirement as a process step for producing high-purity metallic particles. A vacuum-tight radial DMA (RDMA) has been developed and tested at low pressures. Its performance has been evaluated by using a commercial NANO-DMA as the reference. The performance of this low-pressure RDMA (LP-RDMA) in terms of the width of its transfer function is found to be comparable with that of other NANO-DMAs at atmospheric pressure and is almost independent of the pressure down to 30 mbar. It is shown that LP-RDMA can be used for the classification of nanometer-sized particles (5-20 nm) under low pressure condition (30 mbar) and has been successfully applied to nanoparticles produced by ablating FeNi at low pressures. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/49632/1/mea_sci_tec_25-7_2014.pdf Nanda, KK and Kruis, FE (2014) A radial differential mobility analyzer for the size-classification of gas-phase synthesized nanoparticles at low pressures. In: MEASUREMENT SCIENCE & TECHNOLOGY, 25 (7). |
Publicador |
IOP PUBLISHING LTD |
Relação |
http://dx.doi.org/ 10.1088/0957-0233/25/7/075605 http://eprints.iisc.ernet.in/49632/ |
Palavras-Chave | #Materials Engineering (formerly Metallurgy) |
Tipo |
Journal Article PeerReviewed |