Browsing by Subject "Feixos de làser"
Now showing items 1-7 of 7
Cost-effective microfabrication of sub-micron-depth channels by femto-laser anti-stiction texturing (2020-02-26)
Open AccessMicro Electro Mechanical Systems (MEMS) and microfluidic devices have found numerous applications in the industrial sector. However, they require a fast, cost-effective and reliable manufacturing process in order to compete ...
(Institute of Electrical and Electronics Engineers (IEEE), 2015)
Restricted access - publisher's policyWe present the flat focusing mirror - the dielectric mirrors capable to focus and image the narrow beams in reflections. The mirrors are flat, and transversally invariant, i.e. have no optical axis. We consider two different ...
Influence of laser beam power and scanning speed on the macrostructural characteristics of AISI 316L and AISI 431 stainless steel depositions produced by laser cladding process (2021-04-05)
Open AccessIn the laser cladding process, control of the process parameters and knowledge of the characteristics of the materials used are essential for obtaining depositions with excellent metallurgical union, satisfactory dilution ...
(Universitat Politècnica de Catalunya / Technische Universität Darmstadt, 2011)
Master thesis (pre-Bologna period)
Restricted access - author's decisionIn der Automobil- und Luftfahrtbranche werden Laserstrahlschweißverbindungen häufig benutzt. Die Technologie erlaubt eine effektive Verbindung dünnwandiger Leichtbaukonstruktionen. Bei schneller Fertigung ermöglicht sie ...
(Universitat Politècnica de Catalunya, 2016-07-22)
Open AccessDirect-write techniques appear as a versatile option in rapid-prototyping applications because they can directly transfer a custom pattern from a digital file. Lasers are a distinguished tool which allow to perform non-contact ...
Restricted access - publisher's policyThis work exploits the mirage effect to analyze multiple heat sources thermally interacting in an integrated circuit (IC) by means of a probe IR laser beam, which strikes on the die lateral walls and passes through the die ...
Restricted access - publisher's policyWe propose and demonstrate experimentally super-collimation of light beams by an axisymmetric diffractive metamirror—an axisymmetric concentric dielectric ring structure positioned in front of a mirror at a distance of ...