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- Garufo, A. (author), Sberna, P.M. (author), Carluccio, G. (author), Freeman, J.R. (author), Bacon, D.R. (author), Li, L. (author), Bueno, J. (author), Baselmans, J.J.A. (author), Linfield, E.H. (author), Davies, A.G. (author), Llombart, N. (author), Neto, A. (author) article 2019
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Miksys, J. (author), Arutinov, G. (author), Römer, G.R.B.E. (author)Silver nanoparticle inks are among the key functional materials used in printed electronics. Depositing it by laser-induced forward transfer remains a challenging task because the non-linear rheological nature of these inks narrows the range of the laser processing parameters. Understanding, therefore, the influence of the laser parameters on...article 2019
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Scorticati, D. (author), Illiberi, A. (author), Bor, T. (author), Eijt, S.W.H. (author), Schut, H. (author), Römer, G.R.B.E. (author), de Lange, D.F. (author), Huis In't Veld, A.J. (author)Post-deposition annealing by ultra-short laser pulses can modify the optical properties of SnO2 thin films by means of thermal processing. Industrial grade SnO2 films exhibited improved optical properties after picosecond laser irradiation, at the expense of a slightly increased sheet resistance [Proc. SPIE 8826, 88260I (2013)]. The figure of...article 2014
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Vincenc Oboňa, J. (author), Ocelík, V. (author), Rao, J.C. (author), Skolski, J.Z.P. (author), Römer, G.R.B.E. (author), Huis In 'T Veld, A.J. (author), Hosson, J.T.M.D. (author)High purity, mirror-polished polycrystalline Cu surface was treated with single picosecond laser pulses at fluence levels close to the single-pulse modification threshold. The induced surface topography and sub-surface changes were examined with scanning and transmission electron microscopy, respectively. The analysis showed an increased...article 2014
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Sedao, X. (author), Derrien, T.J.Y. (author), Romer, G.R.B.E. (author), Pathiraj, B. (author), Huis in 't veld, A.J. (author)Laser surface micro/nanopatterning by particle lens arrays is a well-known technique. Enhanced optical fields can be achieved on a substrate when a laser beam passes through a self-assembled monolayer of silica microspheres placed on the substrate. This enhanced optical field is responsible for ablative material removal from the substrate...article 2013
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Scorticati, D. (author), Illiberi, A. (author), Römer, G.R.B.E. (author), Bor, T. (author), Ogieglo, W. (author), Klein Gunnewiek, M. (author), Lenferink, A. (author), Otto, C. (author), Skolski, J.Z.P. (author), Grob, F.T.J. (author), de Lange, D.F. (author), Huis in 't Veld, A.J. (author)Ultra-short pulsed laser sources, with pulse durations in the ps and fs regime, are commonly exploited for cold ablation. However, operating ultra-short pulsed laser sources at fluence levels well below the ablation threshold allows for fast and selective thermal processing. The latter is especially advantageous for the processing of thin films....conference paper 2013
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- Römer, G.R.B.E. (author), Del Cerro, D.A. (author), Jorritsma, M.M.J. (author), Phl, R. (author), Chang, B. (author), Liimatainen, V. (author), Zhou, Q. (author), Huis in 't Veld, A.J. (author) conference paper 2012
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Scorticati, D. (author), Römer, G.W. (author), de Lange, D.F. (author), Huis In 't Veld, B. (author)Large areas of regular diffraction nanogratings were produced consisting of so-called laser-induced periodic surface structures (LIPSS) on thin molybdenum layers (<400 nm) deposited on a borosilicate glass substrate. The aim was to produce these structures without ablating nor cracking the molybdenum layer. Ultra short laser pulses were applied...article 2012
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Scorticati, D. (author), Skolski, J.Z.P. (author), Römer, G.R.B.E. (author), Huis in 't Veld, A.J. (author), Workum, M. (author), Theelen, M.J. (author), Zeman, M. (author)In this work, we studied the feasibility of surface texturing of thin molybdenum layers on a borosilicate glass substrate with Ultra-Short Laser Pulses (USLP). Large areas of regular diffraction gratings were produced consisting of Laserinduced periodic surface structures (LIPSS). A short pulsed laser source (230 fs-10 ps) was applied using a...conference paper 2012
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Römer, G.R.B.E. (author), Jorritsma, M.M.J. (author), Del Cerro, D.A. (author), Chang, B. (author), Liimatainen, V. (author), Zhou, Q. (author), Huis in 't Veld, A.J. (author)Fluid driven self-alignment is a low cost alternative to fast but relatively inaccurate robotic pickand- place assembly of micro-fabricated components. This fluidic self-alignment technique relies on a hydrophobic-hydrophilic pattern on the surface of the receiving substrate, which confines a fluid to a receptor site. When a micro-component is...conference paper 2011
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Huis in 't veld, A.J. (author)Ultra short laser pulses in the femto and pico second regime are the most important driver of new laser processes. 3D - Laser micro machining in a direct write mode is already available on an industrial scale whereas in the coming years laser nano machining will be further developed. The key for process innovation is a better understanding of...article 2011
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Vincenc Obona, J. (author), Ocelík, V. (author), Skolski, J.Z.P. (author), Mitko, V.S. (author), Römer, G.R.B.E. (author), Huis In't Veld, A.J. (author), de Hosson, J.T.M. (author)This paper concentrates on observations of the surface topography by scanning electron microscopy (SEM) on alloyed and stainless steels samples treated by ultrashort laser pulses with duration of 210 fs and 6.7 ps. Globular-like and jet-like objects were found depending on the various levels of the fluence applied. It is shown that these...article 2011
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Oboňa, J.V. (author), Ocelík, V. (author), de Hosson, J.T.M. (author), Skolski, J.Z.P. (author), Mitko, V.S. (author), Römer, G.R.B.E. (author), Huis in 't Veld, A.J. (author)The main advantage of ultrashort laser pulses in manufacturing technology is their very high removal rate of material and high quality of microstructures with the smallest dimensions at 1 μm level. The accuracy is mainly due to an almost absence of thermal diffusion into bulk material. In this paper we report the investigation on polycrystalline...conference paper 2011
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Del Cerro, D.A. (author), Römer, G.R.B.E. (author), Huis in't Veld, A.J. (author), TNO Industrie en Techniek (author)Wetting properties of a wide range of materials can be modified by accurate laser micromachining with ultra short laser pulses. Controlling the surface topography in a micro and sub-micrometer scale allows the generation of water-repellent surfaces, which remain dry and prevent ice accumulation under certain conditions. The use of ultra short...conference paper 2010
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Fraanje, P.R. (author), Massioni, P. (author), Verhaegen, M. (author), TNO Industrie en Techniek (author)Deformable mirrors with spatially invariant dynamic response can be considered as part of the class of decomposable systems. Such systems can be thought of as the interconnection of a number of identical subsystems, and they can be used to model certain classes of large scale systems. We show in this article that the technique allows the design...article 2010
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Del Cerro, D.A. (author), Römer, G.R.B.E. (author), Huis in 't Veld, A.J. (author), TNO Industrie en Techniek (author)Micromachining using ultra short laser pulses (USLP) has evolved over the past years as a versatile tool for introducing functional features in surfaces at a micrometric and even at a sub wavelength scale. Being able to control the surface topography at this level provides a method to change the wetting behavior of a great number of materials....conference paper 2010
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Huis in 't Veld, B. (author), van der Veer, H. (author), TNO Industrie en Techniek (author)The physics of ablation has been studied experimentally with ultrashort laser pulses of 210 fs with a wavelength of 800 nm. A specimen of highly alloyed steel (alloy 800H) has been used. After the laser ablation experiments the surface has been inspected using SEM, AFM and scanning helium ion microscopy (SHIM). At the lowest fluence spherical...article 2010
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Skolski, J.Z.P. (author), Römer, G.R.B.E. (author), Huis in 't Veld, A.J. (author), Mitko, V.S. (author), Obona, J.V. (author), Ocelik, V. (author), de Hosson, J.T.M. (author), TNO Industrie en Techniek (author)In surfaces irradiated by short laser pulses, Laser Induced Periodic Surface Structures (LIPSS) have been observed on all kind of materials for over forty years. These LIPSS, also referred to as ripples, consist of wavy surfaces with periodicity equal or smaller than the wavelength of the laser radiation. Unfortunately, the physical phenomena...conference paper 2010
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TNO Industrie en Techniek (author), Hamelinck, R. (author), Rosielle, N. (author), Steinbuch, M. (author), Doelman, N.J. (author)New deformable mirror technology is developed by the Technische Universiteit Eindhoven, Delft University of Technology and TNO Science and Industry. Several prototype adaptive deformable mirrors are realized mirrors, up to 427 actuators and ∅150mm diameter, with characteristics suitable for future AO systems. The prototypes consist of a 100µm...conference paper 2010
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Römer, G.W. (author), Del Cerro, D.A. (author), Sipkema, R.C.J. (author), Groenendijk, M.N.W. (author), Huis in 't Veld, A.J. (author), TNO Industrie en Techniek (author)By laser ablation with ultra short laser pulses in the pico- and femto-second range, well controlled dual scaled micro- and nano-scaled surface textures can be obtained. The micro-scale of the texture is mainly determined by the dimensions of the laser spot, whereas the superimposed nano-structure is the result of so-called laser induced "self...conference paper 2009
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