Authors: Dongbo Wang, , Harindra Kumar Kannojia, Pierre Jouy, Etienne Giraud, Kaspar Suter, Richard Maulini, David Gachet, Léo Hetier, Geert Van Steenberge and Bart Kuyken For the first time, we demonstrate the hybrid integration of dual distributed feedback (DFB) quantum cascade lasers (QCLs) on a silicon photonics platform using an innovative 3D self-aligned flip-chip assembly process....Read More
Authors: Thorsten Jonach, Christian Jordan, Bahram Haddadi, and Michael Harasek The operation and efficiency of 3-phase separators were investigated in this work using various simulation techniques. An overall model of a commercial 3-phase separation unit is established utilizing black-box modelling approaches and the open-source software DWSim. A gravity settling model based on the inlet conditions of...Read More
Authors: Dragana Dimitrijević, Markus Bösenhofer, and Michael Harasek The separation of immiscible liquids is critical in many industrial processes, such as water treatment, different extraction processes, the petroleum industry, food production, and medicine. This work provides an overview of present research on the separation of liquid mixtures. A brief summary of the thermodynamic basis is...Read More
Authors: Thorsten Jonach, Bahram Haddadi, Christian Jordan, and Michael Harasek Gas and oil separation plants are the first main step in the production of hydrocarbon products. Depending on the properties of the recovered components from the well heads, and the physical properties in the underground rock reservoir, the plant design can vary in different ways....Read More
Authors: Felix Frank, Bettina Baumgartner, and Bernhard Lendl. Detecting traces of phosphates in water is critical for monitoring water quality in aquatic ecosystems. Mid-infrared techniques are effective for label-free and quick measurements in at-line or in-line applications, but sensitivity is limited due to high water absorption. To combat this, preconcentration schemes combined with evanescent field...Read More
Authors: Dominik Wacht, Mauro David, Hermann Detz, Bettina Baumgartner, and Bernhard Lendl. Mid-infrared attenuated total reflection (ATR) spectroscopy is a powerful tool for in situ monitoring of various processes. Mesoporous silica, an extensively studied material, has already been applied in sensing schemes due to its high surface area and tunable surface chemistry. However, its poor...Read More
Authors: Stephan Freitag, Matthias Baer, Laura Buntzoll, Georg Ramer, Andreas Schwaighofer, Bernhard Schmauss, and Bernhard Lendl. In this work, we introduce polarimetric balanced detection as a new attenuated total reflection (ATR) infrared (IR) sensing scheme, leveraging unequal effective thicknesses achieved with laser light of different polarizations. We combined a monolithic widely tunable Vernier quantum cascade...Read More
