Výsledky vyhledávání - "Sergey Klimentov"

Akademický článek

Laser surface cleaning of simulated radioactive contaminants in various technological environments

Autor: Maxim Cheban, Serafima Filatova, Yaroslav Kravchenko, Konstantin Scherbakov, Dmitry Mamonov, Sergey Klimentov, Maxim Savinov, Maxim Chichkov

Publikováno v: Nuclear Engineering and Technology, Vol 56, Iss 7, Pp 2775-2780 (2024)

Special methods for cleaning surfaces of stainless steel with a coating simulating radioactive contamination have been developed and studied. The removal of simulated surface contamination was performed using lasers in the micron spectral range with

Externí odkaz: https://doaj.org/article/c0f1764dd26243ad922011fff82e8954

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Akademický článek

Laser-Ablative Synthesis of Isotope-Enriched Samarium Oxide Nanoparticles for Nuclear Nanomedicine

Autor: Elena Popova-Kuznetsova, Gleb Tikhonowski, Anton A. Popov, Vladimir Duflot, Sergey Deyev, Sergey Klimentov, Irina Zavestovskaya, Paras N. Prasad, Andrei V. Kabashin

Publikováno v: Nanomaterials, Vol 10, Iss 1, p 69 (2019)

Nuclear nanomedicine is an emerging field, which utilizes nanoformulations of nuclear agents to increase their local concentration at targeted sites for a more effective nuclear therapy at a considerably reduced radiation dosage. This field needs the

Externí odkaz: https://doaj.org/article/0da863a5b805499fb46b9ed259394aeb

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Pulsed laser deposition in He-N2 gaseous mixtures for the synthesis of photoluminescent Si and Ge nanoparticles for bioimaging

Autor: Anastasiya Fronya, Sergey Antonenko, Nikita Karpov, Nikolay Pokryshkin, Anna Eremina, Alexander Kharin, V. G. Yakunin, V. P. Savinov, Alexander Garmash, Nikolay Kargin, Sergey Klimentov, Victor Timoshenko, Andrei V. Kabashin

Publikováno v: Nanoscale and Quantum Materials: From Synthesis and Laser Processing to Applications 2023.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4990d1da1891b63e778a2f9642d540a1
https://doi.org/10.1117/12.2655137

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Ultrafast Breakdown of dielectrics: Energy absorption mechanisms investigated by double pulse experiments

Autor: Stéphane Guizard, Gautier Vilmart, G. Geoffroy, Nikita Fedorov, Alexandros Mouskeftaras, Sergey Klimentov

Publikováno v: Applied Surface Science. 336:206-211

We investigate the mechanisms involved in the modification of dielectric materials by ultrashort laser pulses. We show that the use of a double pulse (fundamental and second harmonic of a Ti–Sa laser) excitation allows getting new insight in the fu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3a44a57101c0f4290447148437788a79
https://doi.org/10.1016/j.apsusc.2014.11.036

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Optical Breakdown in Ambient Gas and Its Role in Material Processing by Short-Pulsed Lasers

Autor: Vitaly I. Konov, Sergey Klimentov

Publikováno v: Fundamentals of Laser-Assisted Micro-and Nanotechnologies ISBN: 9783319059860

Formation of gas breakdown plasma, staying apart from the surface of materials exposed to pulsed laser radiation, is shown to have a strong impact to productivity and accuracy of micromachining. Origin and effect of two types of such plasmas are desc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5c7d473980fc543d9d08a5845c4a3d23
https://doi.org/10.1007/978-3-319-05987-7_4

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Laser ablation of metals and ceramics in picosecond–nanosecond pulsewidth in the presence of different ambient atmospheres

Autor: Taras V. Kononenko, E.N. Loubnin, C Taut, Armin Raiber, Sergei V Garnov, Friedrich Dausinger, Vitali I. Konov, Sergey Klimentov

Publikováno v: Applied Surface Science. :48-51

Ablation tests of AlN, Si3N4, SiC, Al2O3 ceramics, steel and aluminum have been carried out in vacuum, air and argon atmospheres using UV (270 nm), visible (539 nm) and IR (1078 nm) picosecond (100÷150 ps) and nanosecond (6÷9 ns) laser pulses. Abla

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e2ed1b563f4f7756820508540d1135c9
https://doi.org/10.1016/s0169-4332(96)00905-1

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Mechanisms of femtosecond laser ablation of dielectrics revealed by double pump-probe experiment

Autor: Alexandros Mouskeftaras, Sergey Klimentov, Nikita Fedorov, Stéphane Guizard

Publikováno v: Applied physics. A, Materials science & processing
Applied physics. A, Materials science & processing, Springer Verlag, 2013, 110, pp.709-715. ⟨10.1007/s00339-012-7217-7⟩
Applied physics. A, Materials science & processing, 2013, 110, pp.709-715. ⟨10.1007/s00339-012-7217-7⟩

International audience; We study experimentally the electronic excitation mechanisms involved in the breakdown and ablation of wide band gap dielectrics. A femtosecond pump-probe interferometry technique, with 100 fs temporal resolution, allows measu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::85b042e4da99be0d946d6abbf022f7a5
https://hal-polytechnique.archives-ouvertes.fr/hal-01068505

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Femtosecond laser ablation of dielectrics: Experimental studies of fundamental processes

Autor: Stéphane Guizard, Nikita Fedorov, Alexandros Mouskeftraras, Sergey Klimentov

Publikováno v: 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC).

In the field of laser ablation of wide band gap materials by ultrashort laser pulses, there has been a long debate regarding the excitation and energy deposition mechanism. This is due to the lack of direct experimental investigations, which have bee

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::36588163ce856eba07bf8be839df7860
https://doi.org/10.1109/cleoe.2011.5943334

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Femtosecond Time Resolved Studies of Carrier Excitation and Relaxation Dynamics in Various Dielectrics

Autor: Alexandros Mouskeftaras, Stéphane Guizard, Sergey Klimentov, Nikita Fedorov

Publikováno v: Scopus-Elsevier

We study the different processes of electronic excitation and relaxation occurring when an intense short laser pulse impinges a transparent dielectric. We show that they are strongly material dependent, and strongly influence optical breakdown.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7402cc0f9d3bf58645607ad61d30193c
https://doi.org/10.1364/bgpp.2010.bwc2

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Femtosecond Laser Ablation of Dielectrics: Experimental Studies of Fundamental Processes

Autor: Stéphane Guizard, Nikita Fedorov, Alexandros Mouskeftaras, Sergey Klimentov, Claude Phipps

Publikováno v: AIP Conference Proceedings.

We study experimentally the electronic excitation mechanisms involved in the breakdown and ablation of wide band gap dielectric materials. We use a femtosecond pump‐probe interferometry technique to measure the density of carriers which is excited

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::be0d06d7e73a5a5032ca8143e427c70e
https://doi.org/10.1063/1.3507119

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