Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Chandra S.R. Nathala"'
Autor:
Paraskevi Kavatzikidou, Anthi Ranella, Robert Szoszkiewicz, Wolfgang Husinsky, Chandra S.R. Nathala, Costas Fotakis, A. Daskalova
Publikováno v:
Applied Surface Science. 382:178-191
The use of ultra-short pulses for nanoengineering of biomaterials opens up possibilities for biological, medical and tissue engineering applications. Structuring the surface of a biomaterial into arrays with micro- and nanoscale features and architec
Publikováno v:
Radiation Effects and Defects in Solids. 170:414-428
The effect of fluence and pulse duration on the growth of nanostructures on chromium (Cr) surfaces has been investigated upon irradiation of femtosecond (fs) laser pulses in a liquid confined environment of ethanol. In order to explore the effect of
Autor:
I. Buchvarov, A. Daskalova, I. Bliznakova, Chandra S.R. Nathala, A. Trifonov, Wolfgang Husinsky
Publikováno v:
SPIE Proceedings.
The creation of microporous surface modification of chitosan thin films irradiated by ultrashort laser pulses are studied. For this purpose, chitosan substrates were treated by using an amplified Ti:sapphire laser system at 800 nm central wavelength
Autor:
E. Stoyanova, A. Daskalova, I. Bliznakova, Thomas Ganz, S. Lueftenegger, A. Zhelyazkova, Chandra S.R. Nathala, Wolfgang Husinsky
Publikováno v:
Applied Surface Science. 292:367-377
We report on the structural investigation of self-organized micropores generated in thin gelatin, collagen, and collagen–elastin films after single and multishot irradiation with pulse durations ranging from 30 – 100 fs at 800 nm. We systematical
Autor:
Thomas Ganz, Andrey A. Ionin, Sergey V. Makarov, Andreas Assion, Ali Ajami, Wolfgang Husinsky, Chandra S.R. Nathala, Sergey I. Kudryashov
Publikováno v:
Optics express. 23(5)
In this work the formation of laser-induced periodic surface structures (LIPSS) on a titanium surface upon irradiation by linearly polarized femtosecond (fs) laser pulses with a repetition rate of 1 kHz in air environment was studied experimentally.
Autor:
Sergey V. Makarov, D. V. Sinitsyn, Ilya V. Treshin, A. A. Ionin, Wolfgang Husinsky, M. A. Gubko, Chandra S.R. Nathala, Andrey A. Rudenko, Leonid V. Seleznev, Sergey I. Kudryashov
Publikováno v:
2014 International Conference Laser Optics.
We have demonstrated for the first time that an array of nanoantennas on an aluminum surface, fabricated using a double-pulse femtosecond laser irradiation scheme, results in a 28-fold enhancement of electron photoemission yield, driven by a third fe
Autor:
Stefan Lueftenegger, I. Bliznakova, Seres Enikoe, A. Daskalova, Chandra S.R. Nathala, Thomas Ganz, Wolfgang Husinsky, Alexandra Zhelyazkova
Publikováno v:
MATEC Web of Conferences, Vol 8, p 03009 (2013)
We compare the morphological modifications in gelatin films, induced with an 800nm femtosecond amplifier, in subject of the number of input pulses and the input pulse duration. Foam is formed in all cases, but only under certain conditions the desira
Autor:
Wolfgang Husinsky, Reza Massudi, Atoosa Sadat Arabanian, Aliasghar Ajami, Chandra S.R. Nathala, Somayeh Najafi
Publikováno v:
Journal of Applied Physics. 120:153102
Stress induced birefringence due to asymmetry in axial and radial directions that is generated because of the interaction of ultrashort laser pulses with a transparent material is numerically studied. The coupled equations of nonlinear Schrodinger an
Autor:
Chandra S.R. Nathala, Shazia Bashir, Nisar Ali, Wolfgang Husinsky, Umm-i-Kalsoom, M. Shahid Rafique, Sergey V. Makarov, Narjis Begum
Publikováno v:
Chinese Physics B. 25:018101
Under certain conditions, ultrafast pulsed laser interaction with matter leads to the formation of self-organized conical as well as periodic surface structures (commonly reffered to as, laser induced periodic surface structures, LIPSS). The purpose
Autor:
Wolfgang Husinsky, Irina N. Saraeva, A. O. Levchenko, D. A. Zayarny, Andrey A. Rudenko, Andrey A. Ionin, Chandra S.R. Nathala, Sergey V. Makarov, Sergey I. Kudryashov
Publikováno v:
Laser Physics Letters. 13:025603
The sub and near-threshold topographic signatures of the spallation of nanometer-thick melt layers during single-shot femtosecond laser ablation of bulk aluminum and gold were experimentally observed for the first time, using scanning electron micros