University of Bayreuth View Institution's Website 2 articles published in JoVE Chemistry Inkjet Printing All Inorganic Halide Perovskite Inks for Photovoltaic Applications Dylan Richmond1, Mason McCormick2, Thilini K. Ekanayaka3, Jacob D. Teeter2, Benjamin L. Swanson1, Nicole Benker3, Guanhua Hao3, Sharmin Sikich4, Axel Enders5, Alexander Sinitskii2, Carolina C. Ilie1, Peter A. Dowben3, Andrew J. Yost3 1Department of Physics, State University of New York-Oswego, 2Department of Chemistry, University of Nebraska-Lincoln, 3Department of Physics, University of Nebraska-Lincoln, 4Department of Chemistry, Doane University, 5Physikalisches Institut, Universität Bayreuth A protocol for synthesizing inorganic-lead-halide hybrid perovskite quantum dot inks for inkjet printing and the protocol for preparing and printing the quantum dot inks in an inkjet printer with post characterization techniques are presented. Bioengineering Air Filter Devices Including Nonwoven Meshes of Electrospun Recombinant Spider Silk Proteins Gregor Lang1, Stephan Jokisch1, Thomas Scheibel1 1Biomaterials Research Group, University of Bayreuth Spider silk fibers display extraordinary mechanical properties. Engineered Araneus diadematus Fibroin 4 (eADF4) can be processed into nonwoven meshes using electrospinning. Here, the eADF4 nonwoven meshes are used to improve the performance of air filtering devices.