Direct laser interference patterning
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Direct Laser Interference Patterning (DLIP) - a new method of creating repetitive patterns on the surface of materials by using the interference phenomenon of two or more laser beams[1]. In order to obtain interference, the beam should be split in one of the interference systems. In such an arrangement, the beam is divided, for example, by a beam splitter, special prisms[2] or other element. Then the beams are folded together and form an interference pattern. Sufficiently high power of the laser beam can thus result in the removal of material at the interference maximums thanks to ablation phenomenon, leaving the material intact at the minimums. This way, a repeatable pattern is obtained permanently fixed on the surface of a given material[3].
Advantages of the method
- It is possible to create microstructures directly on the material on a scale much larger than in the case of direct laser writing (DLW). The image created as a result of interference has dimensions of even the order of single centimeters, which enables the creation of a large surface structure in one technological step.
- Another important advantage is that the number of elements in the experimental setup is reduced due to the interference phenomenon.
- The dimensions of the microstructure are in the order of 100 nm, which is not achievable with direct laser writing.
References
- ^ Czyż, Krzysztof; Marczak, Jan; Major, Roman; Mzyk, Aldona; Rycyk, Antoni; Sarzyński, Antoni; Strzelec, Marek (2016-08). "Selected laser methods for surface structuring of biocompatible diamond-like carbon layers". Diamond and Related Materials. 67: 26–40. doi:10.1016/j.diamond.2016.01.013.
{{cite journal}}: Check date values in:|date=(help) - ^ Czyż, Krzysztof (2016-08-05). "The influence of surface topography elaborated by prism optics based laser interference modification on cell differentiation". INŻYNIERIA MATERIAŁOWA. 1 (4): 10–16. doi:10.15199/28.2016.4.2. ISSN 0208-6247.
- ^ Marczak, Jan; Kusiński, Jan; Major, Roman; Rycyk, Antoni; Sarzyński, Antoni; Strzelec, Marek; Czyż, Krzysztof (2014). "Laser interference patterning of diamond-like carbon layers for directed migration and growth of smooth muscle cell depositions" (PDF). OPTICA APPLICATA; 4/2014; ISSN 1429-7507. doi:10.5277/OA140408.