Publication:
Pulse duration and wavelength effects of laser ablation on the oxidation, hydrolysis, and aging of aluminum nanoparticles in water

Файлы
W2945546116.pdf(5.08 MB)
Дата
2019
Авторы
Zhang, K.
Ganeev, R. A.
Boltaev, G. S.
Krishnendu, P. S.
Ivanov, D. S.
Zavestovskaya, I. N.
Иванов, Дмитрий Сергеевич
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Научные группы
Организационные подразделения
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Организационная единица
Инженерно-физический институт биомедицины
Цель ИФИБ и стратегия развития – это подготовка высококвалифицированных кадров на базе передовых исследований и разработок новых перспективных методов и материалов в области инженерно-физической биомедицины. Занятие лидерских позиций в биомедицинских технологиях XXI века и внедрение их в образовательный процесс, что отвечает решению практикоориентированной задачи мирового уровня – диагностике и терапии на клеточном уровне социально-значимых заболеваний человека.
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Аннотация
© 2019 by the authors. Licensee MDPI, Basel, Switzerland.We analyzed the formation of the aluminum (Al) nanoparticles (NPs) with triangular shape obtained by ablating Al bulk in liquid using pulses with different durations (5 ns, 200 ps, and 30 fs) and wavelengths (355 nm, 800 nm, and 1064 nm). We report three stages of synthesis and aging of Al NPs: Formation, transformation, and stable stage. The NPs prepared by different pulses are almost identical at the initial stage. The effects of duration and wavelength of the ablation pulses on the aging of NPs are revealed. Pulse duration is determined to be essential for morphological transformation of NPs, while pulse wavelength strongly influences particle sizes. NPs produced by ultra-short pulses have smaller sizes and narrow size distribution. We demonstrate that oxidation and hydrolysis of Al in water are the results of ablation for all pulse durations and wavelengths, which also strongly modify the preferable reaction path of NPs in water, thus affecting the composition and morphology of triangle NPs. The results of modeling of the NPs generation in water due to a 50 ps laser pulse interacting with a thick Al target are presented. Water-based effects in the formation of NPs, their evolution, and solidification are considered from the mechanical and thermophysical points of view. The detailed analysis of the modeling results allowed for determination of the main mechanism responsible for the ablation process followed by the NPs formation.
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Pulse duration and wavelength effects of laser ablation on the oxidation, hydrolysis, and aging of aluminum nanoparticles in water / Zhang, K. [et al.] // Nanomaterials. - 2019. - 9. - № 5. - 10.3390/nano9050767
URI
https://www.doi.org/10.3390/nano9050767
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85067239216&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000479007900109
 https://openrepository.mephi.ru/handle/123456789/18256
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