The research activities of Prof. Ostendorf are based on micro- and nanosystems and structures. Using ultrafast lasers opens the window for generating structures beyond the diffraction limit. Also, micro- and nanoparticles are investigated with respect to their optical properties (e.g. scattering, resonances, manipulation by optical tweezers). Exploring the resonances in microparticles can lead to completly new types of sensors. Finally, nanoparticles are generated by laser ablation and their material properties are investigated.
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In the present work, we report an effortless fabrication method to generate structural coloration based on microand nano-structures using 3d-laser writing technique. The uniform micro- and nano-structures were produced in a thin polymer film with an refractive index of 1.51. The single structures are aligned in an array to create a blue color field. The identification of the influence of the structures on the artificial color formation was performed using scanning electron microscopy. The optical properties of the blue color was analyzed via an angle-resolved spectrometer.
Array sensor: plasmonic improved optical resonance methods and instrument for biomedical diagnostics
The influence of physical characteristics on ablation effects in UV laser assisted micro engineering
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