抄録
Submicrometer spherical particles (SMSPs) are reported to be fabricated by pulsed laser irradiation with a frequency of 10 or 30 Hz onto raw nanoparticles dispersed in liquid. Here, the effect of the pulse frequency on particles obtained by laser irradiation onto the suspension in a vessel, especially at higher pulse frequencies up to 800 Hz, is investigated. At 200 Hz or lower, SMSPs of similar size can be fabricated, as at 10 or 30 Hz, by the same number of pulses. This indicates that the time required for particle fabrication can be greatly reduced and production efficiency can be improved using a high-frequency laser. In contrast, at 400 Hz or above, nanospherical particles (NSPs) are formed in addition to SMSPs, and the mass fraction of SMSPs is drastically decreased. This result suggests that consecutive laser pulse irradiation induces heat accumulation in particles and suspensions, resulting in a temperature increase and partial evaporation of the particles at 400 Hz or above. From the temperature increase of the suspension, the local temperature of the liquid surrounding the particles is believed to be increased by heat dissipation from the heated particles. Calculations suggest that an increase in the local liquid temperature would cause further heating of the particles.
| 元の言語 | 英語 |
|---|---|
| ページ（範囲） | 529-534 |
| ページ数 | 6 |
| ジャーナル | Applied Surface Science |
| 巻 | 435 |
| DOI | |
| 出版物ステータス | 出版済み - 3 30 2018 |
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All Science Journal Classification (ASJC) codes
- Surfaces, Coatings and Films
これを引用
Influence of pulse frequency on synthesis of nano and submicrometer spherical particles by pulsed laser melting in liquid. / Sakaki, Shota; Ikenoue, Hiroshi; Tsuji, Takeshi; Ishikawa, Yoshie; Koshizaki, Naoto.
：: Applied Surface Science, 巻 435, 30.03.2018, p. 529-534.研究成果: ジャーナルへの寄稿 › 記事
}
TY - JOUR
T1 - Influence of pulse frequency on synthesis of nano and submicrometer spherical particles by pulsed laser melting in liquid
AU - Sakaki, Shota
AU - Ikenoue, Hiroshi
AU - Tsuji, Takeshi
AU - Ishikawa, Yoshie
AU - Koshizaki, Naoto
PY - 2018/3/30
Y1 - 2018/3/30
N2 - Submicrometer spherical particles (SMSPs) are reported to be fabricated by pulsed laser irradiation with a frequency of 10 or 30 Hz onto raw nanoparticles dispersed in liquid. Here, the effect of the pulse frequency on particles obtained by laser irradiation onto the suspension in a vessel, especially at higher pulse frequencies up to 800 Hz, is investigated. At 200 Hz or lower, SMSPs of similar size can be fabricated, as at 10 or 30 Hz, by the same number of pulses. This indicates that the time required for particle fabrication can be greatly reduced and production efficiency can be improved using a high-frequency laser. In contrast, at 400 Hz or above, nanospherical particles (NSPs) are formed in addition to SMSPs, and the mass fraction of SMSPs is drastically decreased. This result suggests that consecutive laser pulse irradiation induces heat accumulation in particles and suspensions, resulting in a temperature increase and partial evaporation of the particles at 400 Hz or above. From the temperature increase of the suspension, the local temperature of the liquid surrounding the particles is believed to be increased by heat dissipation from the heated particles. Calculations suggest that an increase in the local liquid temperature would cause further heating of the particles.
AB - Submicrometer spherical particles (SMSPs) are reported to be fabricated by pulsed laser irradiation with a frequency of 10 or 30 Hz onto raw nanoparticles dispersed in liquid. Here, the effect of the pulse frequency on particles obtained by laser irradiation onto the suspension in a vessel, especially at higher pulse frequencies up to 800 Hz, is investigated. At 200 Hz or lower, SMSPs of similar size can be fabricated, as at 10 or 30 Hz, by the same number of pulses. This indicates that the time required for particle fabrication can be greatly reduced and production efficiency can be improved using a high-frequency laser. In contrast, at 400 Hz or above, nanospherical particles (NSPs) are formed in addition to SMSPs, and the mass fraction of SMSPs is drastically decreased. This result suggests that consecutive laser pulse irradiation induces heat accumulation in particles and suspensions, resulting in a temperature increase and partial evaporation of the particles at 400 Hz or above. From the temperature increase of the suspension, the local temperature of the liquid surrounding the particles is believed to be increased by heat dissipation from the heated particles. Calculations suggest that an increase in the local liquid temperature would cause further heating of the particles.
UR - http://www.scopus.com/inward/record.url?scp=85034626355&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85034626355&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2017.10.235
DO - 10.1016/j.apsusc.2017.10.235
M3 - Article
AN - SCOPUS:85034626355
VL - 435
SP - 529
EP - 534
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
ER -