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Self-Healing Polymer Coatings Based on Crosslinked Metallosupramolecular Copolymers
Self-healing coating based on metallopolymers are prepared and fully characterized. The iron bisterpyridine complexes are incorporated into a polymer network based on methacyrlates, resulting in self-healing...
PublicationsPolycrystalline silicon thin-film solar cells prepared by layered laser crystallization with 540 mV open circuit voltage
Polycrystalline silicon thin film solar cells on a glass substrate are investigated. The solar cell layer structure was generated by a two-step process in which first a 100–600 nm thin seed layer is...
PublicationsH2 Sensing Based on a Pd-Coated Tapered-FBG Fabricated by DUV Femtosecond Laser Technique
An optical fiber sensor based on a tapered-FBG coated with 150 nm-thick Pd film is proposed for hydrogen detection. The FBG was written in a 50 µm-diameter tapered fiber by DUV femtosecond laser technology....
PublicationsInvestigation of Gas Exchange Processes in Peat Bog Ecosystems by Means of Innovative Raman Gas Spectroscopy
Highly sensitive Raman gas spectroscopy is introduced for simultaneous real time analysis of O2, CO2, CH4, and N2 in order to elucidate the dynamics of greenhouse gases evolving from climate-sensitive...
PublicationsMagnetic and magneto-optical quenching in (Mn2+, Sr2+) metaphosphate glasses
Transition metal ions such as Mn2+, Fe2+, or Co2+ provide an interesting alternative to rare earth dopants in optically active glasses. In terms of their magneto-optical properties, they are not yet very...
PublicationsIn situ FBG inscription during fiber laser operation
We demonstrate the inscription of a 266 nm UV femtosecond pulse-induced fiber Bragg grating (FBG) in an Yb-doped fiber during optical pumping at 976 nm and the initiation of lasing with increasing grating...
PublicationsOptical activity in sub-wavelength metallic grids and fishnet metamaterials in the conical mount
We report on measurements of optical activity in reflection from plasmonic crystals consisting of a sub-wavelength silver meshed grid and a fishnet metamaterial in the conical mount. The fishnet metamaterials,...
PublicationsHigh quality factor whispering gallery modes from self-assembled hexagonal GaN rods grown by metal-organic vapor phase epitaxy
Self-assembled GaN rods were grown on sapphire by metalorganic vapor phase epitaxy using a simple two-step method that relies first on a nitridation step followed by GaN epitaxy. The mask-free rods formed...
PublicationsProcessing and Oxygenation of YBaCuO Melted Textured Ceramics at High and Enhanced Pressures and Temperatures
It has been established that the oxygenation of the structure of YBa2Cu3O7–δ (Y123) textured ceramic materials under elevated pressure (up to 10–16 MPa) and high temperatures (700–900°C) for a...
PublicationsFabrications of Fiber Bragg Gratings Written inPhotonic Crystal Fibers
We report a two-beam interference method employing a femtosecond or excimer laser to write fiber Bragg gratings in the pure-silica and Ge-doped photonic crystal fibers (PCFs). The effects of the H2-loading...
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