Cell and Tissue Response to Modified by Laser-induced Periodic Surface Structures Biocompatible Materials for Dental Implants

AbstractThe use of ultra-short pulsed lasers enables the fabrication of laser-induced periodic surface structures (LIPSS) on various materials following a single-step, direct-writing technique. These specific, well-ordered nanostructures with periodicities in the order of the utilised laser wavelength facilitate the engineering of surfaces with functional properties. This review paper discusses the physical background of LIPSS formation on substrates with different material properties. Using the examples of structural colours, specific wetting states and the reduction of friction and wear, this work presents experimental approaches that allow to deliberately influence the LIPSS formation process and thus tailor the surface properties. Finally, the review concludes with some future developments and perspectives related to forthcoming applications of LIPSS-based surfaces are discussed.

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Formation of periodic surface structures in multilayer amorphous Ge2Sb2Te5 thin films irradiated by femtosecond laser pulses

Journal of Physics Conference Series ◽

10.1088/1742-6596/1686/1/012006 ◽

2020 ◽

Vol 1686 ◽

pp. 012006

Author(s):

A V Kolchin ◽

D V Shuleiko ◽

S V Zabotnov ◽

L A Golovan ◽

D E Presnov ◽

...

Keyword(s):

Thin Films ◽

Femtosecond Laser ◽

Laser Pulses ◽

Femtosecond Laser Pulses ◽

Surface Structures ◽

Periodic Surface

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Generation of Multiple Vector Optical Bottle Beams

Photonics ◽

10.3390/photonics8060218 ◽

2021 ◽

Vol 8 (6) ◽

pp. 218

Author(s):

Svetlana N. Khonina ◽

Alexey P. Porfirev ◽

Sergey G. Volotovskiy ◽

Andrey V. Ustinov ◽

Sergey A. Fomchenkov ◽

...

Keyword(s):

Intensity Distribution ◽

Polarization State ◽

Spatial Dynamics ◽

Surface Structures ◽

Optical Traps ◽

Spatial Transformation ◽

Optical Elements ◽

Periodic Surface ◽

Matter Interaction ◽

Different Types

We propose binary diffractive optical elements, combining several axicons of different types (axis-symmetrical and spiral), for the generation of a 3D intensity distribution in the form of multiple vector optical ‘bottle’ beams, which can be tailored by a change in the polarization state of the illumination radiation. The spatial dynamics of the obtained intensity distribution with different polarization states (circular and cylindrical of various orders) were investigated in paraxial mode numerically and experimentally. The designed binary axicons were manufactured using the e-beam lithography technique. The proposed combinations of optical elements can be used for the generation of vector optical traps in the field of laser trapping and manipulation, as well as for performing the spatial transformation of the polarization state of laser radiation, which is crucial in the field of laser-matter interaction for the generation of special morphologies of laser-induced periodic surface structures.

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