Texturing using ultra short laser pulses (TULP)
Prof.dr.ir. A.J. Huis in ‘t Veld
Dr.ir. G.R.B.E. Römer
MSc V.S. Mitko (contact person)
MSc. J. Skolski
June 2009 – June 2013
texturing, ultra short laser pulses
This project aims at developing processes for fabrication of surface structures on micro- and nano scale by the use of ultra short laser pulses. Surface structures will generate special contact surfaces in metal or ceramic for friction control in precision equipment. Laser textured surfaces can also generate hydrophobic-hydrophilic patterns that can be replicated in polymer surfaces. Furthermore, research will be conducted into the physical aspects of the interaction of ultra short laser pulses with materials.
The future of manufacturing is being determined by the opportunities offered by micro and nano engineering. Many new products are exploiting the increased functionality that is realizable using micro and nano features. Medical and health care, industrial, optics and photonics, organic electronics and consumer product sectors will all benefit.
Previous research carried out within the IOP Precision Technology Programme on the ‘Lotus Texture’, developed a technique to generate super hydrophobic surfaces by designed surface structures. Femto second laser pulses were used to generate a structure with a roughness on two different length scales in metal molds: a coarse structure in the order of 10 μm and a superimposed fine structure in the order of 500 nm. This fine structure is the result of so called self organized ripple patterns. Worldwide a few research groups address this phenomenon, which however is explained only partially up till now and industrial applications are not published in literature. The proposed research is needed to understand the background and further extent the scope of the processes.
The task of the first PhD student is to develop new textures for surface performance using wetting and optical effects. The second PhD student addresses textured surfaces for replication processes. The PhD students are working in the micro-laboratory. In this laboratory two laser systems are available: a Coherent laser with 240 femto second laser pulses and a Trumpf system with pico second laser pulses. A Post Doc working at Materials Science group of the University of Groningen strengthens the physical approach of laser material interaction on very short time scales. The researchers have a strong interaction with several industrial partners: ASML, FEI, Lightmotif, Philips and TNO.
This research project is sponsored by the Materials Innovation Institute (M2i)