Modelling of tribological scaling effects in deep drawing

Aim: Development of a friction function for deep drawing processes, which takes scaling effects into account.
Method: Deep drawing of cups and hat-profiles in macro- and micro-range as well as numerical identification of the friction function through algorithms of optimisation.
Funding: Deutsche Forschungsgemeinschaft (DFG)





Modified laser-assisted electrochemical jet-method for a 3D microstructuring of metals and alloys

Aim: Development of the scientific and technical fundamentals for a modified laser-assisted electrochemcial jet-method for a 3D microstructuring of metals and alloys.
Method: Chemical removal with high etch rates by combination of a laser beam with a reactive fluid beam (jet).
Funding: Deutsche Forschungsgemeinschaft (DFG)





Non-linear dynamics of the laser-assisted electrochemical jet-method for a ultra-precision microstructuring of metals for optical applications

Aim: Investigation of the non-linear dynamics of the thermochemical, hydrodynamical and electrochemical processes of the laser-assisted electrochemical jet-method.
Method: Chemical removal with high machining quality by combination of a laser beam with a reactive fluid beam (jet) and an external electrical field.
Funding: Volkswagen Stiftung





Bremen centre of applied gene sensorics
Subprojects: a) Surface structures of the fluidic system. b) Completion of the pipetting system and NTP-fabrication.

Aim: a) Realization of a flow cell leading to a uniform flow across DNA-sensor-arrays. b) Development of a micro-pipetting system for the fabrication of DNA-microarrays.
Method: a) Investigations of the design of microfluidic structures prepared by large-area laserstructuring of polymers. b) Integration of additional functions (e.g. air-conditioning) into the pipetting automate.
Funding: Bundesministerium für Bildung und Forschung.





Controlling the Spatial Energy Distribution by Active 3D-Beam Shaping for the Ablative Laser Micro Machining

Aim: Enhancing the process limitations of the ablative laser micro machining by active 3D-beam shaping for controlling the energy distribution.
Method: Investigating the scientific-technological basics to control the spatial thermal field of the zone of interaction by designing the 3D-shape of the laser beam with respect to temporal and energetic parameters.
Funding: Deutsche Forschungsgemeinschaft (DFG)





Development of optical measurement techniques for the evaluation of material parameters of components in the microtechnology for the determination of the longtime-stability

Aim: lasergestützte Herstellung und Erprobung von verschiedenartigen integriert-optischen Sensortypen (Bragg-Sensor, Gitterinterferometer) in der polymeren Oberfläche von Mikrobaukomponenten.
Method: lasergestützte maskenlithographische Verfahren zur Erzeugung von integriert-optischen Strukturen durch UV-Laserstrahlung.
Funding: Bundesministerium für Bildung und Forschung.





Neuartiges UV-lasergestütztes Verfahren zur Prozeßkettenverkürzung bei der Herstellung von integriert-optischen Lichtwellenleiter-Komponenten auf Polymerbasis

Aim: lasergestützte Herstellung und Erprobung von planaren integriert-optischen (dispersiven) Komponenten auf Polymerbasis für die optische Telekommunikationstechnik.
Method: photochemische Modifizierung der optischen Eigenschaften von polymeren Materialien durch UV-Laserstrahlung.
Funding: Deutsche Forschungsgemeinschaft (DFG)





New Photon - Plasma - CVD - Process for High Speed Synthesis of Diamond/Hard coatings

Aim: Validation and optimization of the process for application in tool industry, namely for coating of saw bands.
Method: Development of scientific, physical-technical, technological and economical fundamentals of the process on the basis of substrate materials, suitable for industrial application.
Funding: Bundesministerium für Bildung und Forschung.





Ecotissue by Gas Phase Surface Modification of Lignocellulosic Fibres

Aim: Conception, construction and validation of a pilot station for surface and volume treatment of cellulose by means of an atmospheric plasma to improve the mechanical and hydrodynamical properties of the substrates.
Method: Application-oriented basic research for the production and operation of Micro Hollow Cathodes (MHC) and MHC-Arrays.
Funding: EU





New process for Plasma-CVD-Systhesis of carbon containing hard films in air

Aim: Study of the so called "Photon-Plasmatron", conditions for excitation and maintenance of a special atmospheric plasma for CVD thin film sysnthesis for consolodation of the scientific and physical-technical fundamentals for the deposition of carbon containing hard coatings with controllable properties, e.g. structur and morphology.
Method: Basic investigations on an atmospheric plasma, ignited and maintained by means of a cw-CO2 laser with respect to the precursor gases and substrate materials used and considering thermal and apparative marginal conditions.
Funding: Deutsche Forschungsgemeinschaft (DFG)