Search Results - "Römer, G.R.B.E."

Effect of surface roughness on the ultrashort pulsed laser ablation fluence threshold of zinc and steel by Mustafa, H., Mezera, M., Matthews, D.T.A., Römer, G.R.B.E.

“…The single and multiple pulse laser ablation threshold of zinc and steel at picosecond laser pulse duration is studied as a function of initial surface…”
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Investigation of the ultrashort pulsed laser processing of zinc at 515 nm: Morphology, crystallography and ablation threshold by Mustafa, H., Matthews, D.T.A., Römer, G.R.B.E.

“…Bulk polycrystalline pure zinc is ablated in air using a picosecond laser source to perform single pulse and multi-pulse processing at a wavelength of 515 nm…”
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Determination of irradiation parameters for laser-induced periodic surface structures by Eichstädt, J., Römer, G.R.B.E., Huis in ‘t Veld, A.J.

“…► We present an approach for the determination of irradiation parameters for laser-induced periodic surface structures. ► The approach is based on accumulated…”
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Robust precision alignment algorithm for micro tube laser forming by Folkersma, K.G.P., Brouwer, D.M., Römer, G.R.B.E., Herder, J.L.

“…•Tube laser forming shows a high scattering of the bending angle and direction.•Tube laser forming can be used for high precision component alignment.•An…”
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On the formation of laser induced self-organizing nanostructures by Römer, G.R.B.E., Huis in’t Veld, A.J., Meijer, J., Groenendijk, M.N.W.

“…Laser induced self-organizing rippled nanostructures on steel are formed by femtosecond laser pulses. They are applied as hydrophobic surfaces. A low fluence…”
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On the surface topography of ultrashort laser pulse treated steel surfaces by Vincenc Obona, J., Ocelík, V., Skolski, J.Z.P., Mitko, V.S., Römer, G.R.B.E., Huis in’t Veld, A.J., De Hosson, J.Th.M.

“…► Influence of ultrashort pulsed laser–matter interaction on formation of small and big ripples is discussed. ► Small ripples lying between big ones are formed…”
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Data on laser induced preferential crystal (re)orientation by picosecond laser ablation of zinc in air by Mustafa, H., Aarnts, M.P., Capuano, L., Matthews, D.T.A., Römer, G.R.B.E.

“…Laser ablation of zinc is performed with a 6.7 ps pulsed laser source to investigate the ablation mechanism and resulting morphology of the irradiated surface…”
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Picosecond pulsed underwater laser ablation of silicon and stainless steel: Comparing crater analysis methods and analysing dependence of crater characteristics on water layer thickness by van der Linden, S., Hagmeijer, R., Römer, G.R.B.E.

“…[Display omitted] •Crater data is objectively defined based on characteristics of unablated material.•Results show two distinct ablation regimes different for…”
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Wear characterization of multilayer laser cladded high speed steels by Ur Rahman, N., de Rooij, M.B., Matthews, D.T.A., Walmag, G., Sinnaeve, M., Römer, G.R.B.E.

“…The wear behavior of three laser clad high speed steel (HSS) alloys and one conventional spun cast HSS alloy was investigated by using a pin on disc tribometer…”
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Fabrication of millimeter-long structures in sapphire using femtosecond infrared laser pulses and selective etching by Capuano, L., Tiggelaar, R.M., Berenschot, J.W., Gardeniers, J.G.E., Römer, G.R.B.E.

“…•If sapphire is irradiated along the direction perpendicular to the polarization of the light, the irradiated lines do not show a smooth single amorphized…”
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The role of pulse repetition rate on picosecond pulsed laser processing of Zn and Zn-coated steel by Mustafa, H., Matthews, D.T.A., Römer, G.R.B.E.

“…•MRR is defined by pulse energy and number of pulses than average power.•MRR increases for heat accumulation and ablated depth decreases for particle…”
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Laser metal deposition of vanadium-rich high speed steel: Microstructural and high temperature wear characterization by Rahman, N. Ur, Capuano, L., Rooij, M.B. de, Matthews, D.T.A., Garcia-Junceda, A., Mekicha, M.A., Cordova, L., Walmag, G., Sinnaeve, M., Römer, G.R.B.E.

“…A comparative high temperature wear study was conducted between two alloys: laser metal deposited vanadium-rich (V-rich) high speed steel (HSS) and spun cast…”
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Directed energy deposition and characterization of high-carbon high speed steels by Ur Rahman, N., Capuano, L., Cabeza, S., Feinaeugle, M., Garcia-Junceda, A., de Rooij, M.B., Matthews, D.T.A., Walmag, G., Gibson, I., Römer, G.R.B.E.

“…[Display omitted] •Two new high-carbon high speed steel alloys; Febal-C-Cr-Mo-V and Febal−x-C-Cr-Mo-V-Wx were additively manufactured by directed energy…”
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Modification of Cu surface with picosecond laser pulses by VINCENC OBONA, J, OCELIK, V, RAO, J. C, SKOLSKI, J. Z. P, RÖMER, G. R. B. E, HUIS IN 'T VELD, A. J, DE HOSSON, J. Th. M

“…High purity, mirror-polished polycrystalline Cu surface was treated with single picosecond laser pulses at fluence levels close to the single-pulse…”
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Development and characterization of multilayer laser cladded high speed steels by Ur Rahman, N., Capuano, L., van der Meer, A., de Rooij, M.B., Matthews, D.T.A., Walmag, G., Sinnaeve, M., Garcia-Junceda, A., Castillo, M., Römer, G.R.B.E.

“…•Multilayer HSS alloys have been produced by laser cladding and characterized in terms of their microstructural evolution, hardness, stress state and tensile…”
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Annealing of SnO_2 thin films by ultra-short laser pulses by Scorticati, D., Illiberi, A., Bor, T., Eijt, S.W.H., Schut, H., Römer, G.R.B.E., de Lange, D.F., in t Veld, A.J. Huis

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Thermal annealing using ultra-short laser pulses to improve the electrical properties of Al:ZnO thin films by Scorticati, D., Illiberi, A., Bor, T.C., Eijt, S.W.H., Schut, H., Römer, G.R.B.E., Klein Gunnewiek, M., Lenferink, A.T.M., Kniknie, B.J., Mary Joy, R., Dorenkamper, M.S., de Lange, D.F., Otto, C., Borsa, D., Soppe, W.J., Huis in ’t Veld, A.J.

“…Industrial-grade Al:ZnO thin films, were annealed by UV picosecond laser irradiation in argon atmosphere. A remarkable increase of both the carrier density and…”
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Inverse Calculation of Power Density for Laser Surface Treatment by Römer, G.R.B.E., Meijer, J.

“…Laser beam surface treatment requires a well-defined temperature profile. In this paper an analytic method is presented to solve the inverse problem of heat…”
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Cost-savings and economic benefits due to the assistive robotic manipulator (ARM) by Romer, G.R.B.E., Stuyt, H.J.A., Peters, A.

“…Besides the social and personal benefits of a rehabilitation robot, the direct cost-savings and other (indirect) economic benefits, or effectiveness, are of…”
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