EOARD technology assessment. Optical thin film coatings.
A Bacillus-strain was isolated from spoiled apple juice. This strain was acidophilic with a growth range between pH 2.5 and 5.5. Lipid analysis demonstrated the occurence of w-cyclohexane fatty acids and hopanoids. As these cell constituents have among bacilli been found only in Bacillus acidocaldarius strains, our isolated microorganism seems to b...
Two optical topographical methods for homogeneity control of GaAs wafers are presented. The first one (NIRtop) monitors the transmission of near infrared light, while the other one (PLtop) records the room temperature photoluminescence. The topograms are displayed as false colour pictures of high resolution. By comparison a remarkable resemblance f...
Aim of the SSP project (Silicon Sheets from Powder) is to grow large area silicon substrates for solar cells of high conversion efficiency. A silicon powder layer is converted into a polycrystalline sheet by a zone melting process using incoherent focussed light as heat source. The feasibility of the method had been demonstrated before by the growt...