Charge States of Size-Selected Silver Nanoparticles Produced by Magnetron Sputtering

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Gas-phase aggregation of metal nanoparticles (nanoclusters), in particular, produced by magnetron sputtering, is a widely used method in research and industrial applications. Therefore, better understanding of the nucleation and growth processes as well as of nanoparticle dynamics in aggregation zone is required. One of the poorly understood issues is a charge state of nanocluster formed in magnetron-based sources. In the current work, an original
approach to study charge states of silver nanoclusters after mass (size) filtering is suggested. The study reveals that particles can carry both negative and positive charges; anionic nanoparticles dominate over the cationic ones under the conditions used in our experiment. It is also found that a
considerable fraction of nanoparticles has charges greater than unity, and this fraction increases with particle size. However,the tendency depends on polarity. For the cations, the doubly, triply and quadruply charged nanoclusters have very similar fractions for a given filtering condition, while for anions, an ability to carry higher than unity charges by individual particles gradually decreases. Thus, the study provides important insights on the formation of cationic and anionic nanoparticles in magnetron cluster sources as well as on the tendencies to carry multiple charges depending on particle size.
OriginalsprogEngelsk
Artikelnummer171
TidsskriftJournal of Nanoparticle Research
Vol/bind21
Udgave nummer8
ISSN1388-0764
DOI
StatusUdgivet - aug. 2019

Fingerprint

Silver Nanoparticles
Magnetron Sputtering
Nanoclusters
Silver
Magnetron sputtering
magnetron sputtering
nanoclusters
silver
Charge
Nanoparticles
nanoparticles
Agglomeration
Particle size
unity
Particle Size
tendencies
Metal nanoparticles
Aggregation
Filtering
Industrial applications

Citer dette

@article{12ae18bc08da443c8a758572100cd067,
title = "Charge States of Size-Selected Silver Nanoparticles Produced by Magnetron Sputtering",
abstract = "Gas-phase aggregation of metal nanoparticles (nanoclusters), in particular, produced by magnetron sputtering, is a widely used method in research and industrial applications. Therefore, better understanding of the nucleation and growth processes as well as of nanoparticle dynamics in aggregation zone is required. One of the poorly understood issues is a charge state of nanocluster formed in magnetron-based sources. In the current work, an originalapproach to study charge states of silver nanoclusters after mass (size) filtering is suggested. The study reveals that particles can carry both negative and positive charges; anionic nanoparticles dominate over the cationic ones under the conditions used in our experiment. It is also found that aconsiderable fraction of nanoparticles has charges greater than unity, and this fraction increases with particle size. However,the tendency depends on polarity. For the cations, the doubly, triply and quadruply charged nanoclusters have very similar fractions for a given filtering condition, while for anions, an ability to carry higher than unity charges by individual particles gradually decreases. Thus, the study provides important insights on the formation of cationic and anionic nanoparticles in magnetron cluster sources as well as on the tendencies to carry multiple charges depending on particle size.",
keywords = "Gas-aggregated metal nanoparticles, Cluster beam technique, Cluster size-selection, Charge state of nanoparticle",
author = "Vladimir Popok and Leonid Gurevich",
year = "2019",
month = "8",
doi = "10.1007/s11051-019-4615-1",
language = "English",
volume = "21",
journal = "Journal of Nanoparticle Research",
issn = "1388-0764",
publisher = "Springer",
number = "8",

}

Charge States of Size-Selected Silver Nanoparticles Produced by Magnetron Sputtering. / Popok, Vladimir; Gurevich, Leonid.

I: Journal of Nanoparticle Research, Bind 21, Nr. 8, 171, 08.2019.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Charge States of Size-Selected Silver Nanoparticles Produced by Magnetron Sputtering

AU - Popok, Vladimir

AU - Gurevich, Leonid

PY - 2019/8

Y1 - 2019/8

N2 - Gas-phase aggregation of metal nanoparticles (nanoclusters), in particular, produced by magnetron sputtering, is a widely used method in research and industrial applications. Therefore, better understanding of the nucleation and growth processes as well as of nanoparticle dynamics in aggregation zone is required. One of the poorly understood issues is a charge state of nanocluster formed in magnetron-based sources. In the current work, an originalapproach to study charge states of silver nanoclusters after mass (size) filtering is suggested. The study reveals that particles can carry both negative and positive charges; anionic nanoparticles dominate over the cationic ones under the conditions used in our experiment. It is also found that aconsiderable fraction of nanoparticles has charges greater than unity, and this fraction increases with particle size. However,the tendency depends on polarity. For the cations, the doubly, triply and quadruply charged nanoclusters have very similar fractions for a given filtering condition, while for anions, an ability to carry higher than unity charges by individual particles gradually decreases. Thus, the study provides important insights on the formation of cationic and anionic nanoparticles in magnetron cluster sources as well as on the tendencies to carry multiple charges depending on particle size.

AB - Gas-phase aggregation of metal nanoparticles (nanoclusters), in particular, produced by magnetron sputtering, is a widely used method in research and industrial applications. Therefore, better understanding of the nucleation and growth processes as well as of nanoparticle dynamics in aggregation zone is required. One of the poorly understood issues is a charge state of nanocluster formed in magnetron-based sources. In the current work, an originalapproach to study charge states of silver nanoclusters after mass (size) filtering is suggested. The study reveals that particles can carry both negative and positive charges; anionic nanoparticles dominate over the cationic ones under the conditions used in our experiment. It is also found that aconsiderable fraction of nanoparticles has charges greater than unity, and this fraction increases with particle size. However,the tendency depends on polarity. For the cations, the doubly, triply and quadruply charged nanoclusters have very similar fractions for a given filtering condition, while for anions, an ability to carry higher than unity charges by individual particles gradually decreases. Thus, the study provides important insights on the formation of cationic and anionic nanoparticles in magnetron cluster sources as well as on the tendencies to carry multiple charges depending on particle size.

KW - Gas-aggregated metal nanoparticles

KW - Cluster beam technique

KW - Cluster size-selection

KW - Charge state of nanoparticle

UR - http://www.scopus.com/inward/record.url?scp=85070194138&partnerID=8YFLogxK

U2 - 10.1007/s11051-019-4615-1

DO - 10.1007/s11051-019-4615-1

M3 - Journal article

VL - 21

JO - Journal of Nanoparticle Research

JF - Journal of Nanoparticle Research

SN - 1388-0764

IS - 8

M1 - 171

ER -