scholarly journals Surface functionalization by laser-induced periodic surface structures

2020 ◽  
Vol 32 (2) ◽  
pp. 022063 ◽  
Author(s):  
Camilo Florian ◽  
Sabrina V. Kirner ◽  
Jörg Krüger ◽  
Jörn Bonse
Keyword(s):  
Surface Functionalization ◽  
Surface Structures ◽  
Periodic Surface

Inline LIPSS Monitoring Method Employing Light Diffraction

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Aleksandra Michalek ◽  
Tahseen Jwad ◽  
Pavel Penchev ◽  
Tian Long See ◽  
Stefan Dimov
Keyword(s):  
Surface Functionalization ◽  
Incident Angle ◽  
Optical Response ◽  
Surface Structures ◽  
Monitoring Method ◽  
Periodic Surface ◽  
Geometrical Characteristics ◽  
Reflected Light ◽  
Spatial Periodicity ◽  
Diffraction Angle

Abstract Laser-induced ripples that are also known as laser-induced periodic surface structures (LIPSS) have gained a considerable attention by researchers and industry due to their surface functionalization applications. However, texturing large areas or batch manufacture of parts that incorporate LIPSS surfaces require the development of tools for monitoring the LIPSS generation and potentially for controlling their main geometrical characteristics, i.e., spatial periodicity, orientation, and amplitude. In this context, the focus of the research reported in this paper is on developing process monitoring and inspection methods for identifying shifts and changes in these characteristics. One of the well-known and widely used by industry method for characterizing and inspecting surfaces is light scattering, and this research investigates the capabilities of this method for inline monitoring of LIPSS optical response. A simple setup was designed and implemented for measuring the diffraction angle and intensity of the reflected light from LIPSS surfaces. The capabilities of this concept for determining relative shifts in the optical response on surfaces processed with known disturbances, such as incident angle deviations and focus offset, were investigated. Sensitivity of the method proved to be sufficient to detect shifts/deviations from LIPSS reference and thus potentially to monitor their generation in line with a simple sensor, e.g., the LIPSS treatment of larger tool surfaces or serial manufacture of holograms.

Formation of laser-induced periodic surface structures on different materials: fundamentals, properties and applications

2020 ◽  
Vol 9 (1-2) ◽  
pp. 11-39 ◽  
Author(s):  
Stephan Gräf
Keyword(s):  
Friction And Wear ◽  
Review Paper ◽  
Laser Wavelength ◽  
Single Step ◽  
Surface Structures ◽  
Direct Writing ◽  
Periodic Surface ◽  
Experimental Approaches ◽  
Ordered Nanostructures ◽  
Physical Background

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.

scholarly journals Generation of Multiple Vector Optical Bottle Beams

Photonics ◽  
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.

Laser-Induced Periodic Surface Structures Nanofabricated on Poly(trimethylene terephthalate) Spin-Coated Films

Langmuir ◽  
2012 ◽  
Vol 28 (20) ◽  
pp. 7938-7945 ◽  
Author(s):  
I. Martín-Fabiani ◽  
E. Rebollar ◽  
S. Pérez ◽  
D. R. Rueda ◽  
M. C. García-Gutiérrez ◽  
...  
Keyword(s):  
Surface Structures ◽  
Periodic Surface ◽  
Trimethylene Terephthalate

scholarly journals High-speed manufacturing of highly regular femtosecond laser-induced periodic surface structures: physical origin of regularity

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Iaroslav Gnilitskyi ◽  
Thibault J.-Y. Derrien ◽  
Yoann Levy ◽  
Nadezhda M. Bulgakova ◽  
Tomáš Mocek ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
High Speed ◽  
Surface Structures ◽  
Physical Origin ◽  
Periodic Surface
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