Publikationen

Borgmann, L. M.; Johnsen, S.; Oliveira, C., Santos de; Martins de Souza e Silva, J.; Li, J.; Kirchlechner, C.; Gomard, G.; Wiegand, G.; Hölscher, H. (2023). Porous polymeric microparticles foamed with supercritical CO₂ as scattering white pigments. Bioinspiration & Biomimetics, 18 (2), Art.-Nr. 026011. doi:10.1088/1748-3190/acb899

Yu, S.; Guo, B.; Johnsen, S.; Wiegand, G.; Lemmer, U.; Guo, X.; Zhang, M.; Li, Y.; Sprau, C.; Hölscher, H.; Colsmann, A.; Gomard, G. (2022). Nanoporous Polymer Reflectors for Organic Solar Cells. Energy technology, 10 (2), Art.-Nr. 2100676. doi:10.1002/ente.202100676

Yu, S.; Fritz, B.; Johnsen, S.; Busko, D.; Richards, B. S.; Hippler, M.; Wiegand, G.; Tang, Y.; Li, Z.; Lemmer, U.; Hölscher, H.; Gomard, G. (2019). Enhanced Photoluminescence in Quantum Dots–Porous Polymer Hybrid Films Fabricated by Microcellular Foaming. Advanced optical materials, 7 (12), Article no: 1900223. doi:10.1002/adom.201900223

Yu, S.; Fritz, B.; Theobald, D.; Wu, K.; Johnsen, S.; Busko, D.; Richards, B. S.; Wiegand, G.; Tang, Y.; Li, Z.; Lemmer, U.; Holscher, H.; Gomard, G. (2019). Enhanced color conversion of quantum dots - polymer hybrid films in light emitting diodes. 20th International Conference on Electronic Packaging Technology (ICEPT 2019), 1–4, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/ICEPT47577.2019.245231

Kaminske, V.; Wiegand, G. (2018). 50 Jahre Plattentektonik: Offene Fragen und mögliche Antworten. Naturwissenschaftliche Rundschau, 71 (3).

Wiegand, G.; Böse, A.-S.; Hölscher, H.; Johnsen, S.; Schneider, M.; Syurik, J.; Worgull, M. (2018). Creation of microstructured polymers with defined micro and nano pores for different applications using hot embossing and CO₂. 12th International Symposium on Supercritical Fluids, Antibes-Juan-les-Pins, F, April 22-25, 2018, Paper OA09, ISASF.

Wiegand, G.; Hölscher, H.; Johnsen, S.; Schneider, M.; Syurik, J.; Worgull, M. (2018). Creation of microstructured polymers with defined micro and nano pores for different applications using hot embossing and CO₂ [in press]. 12th International Symposium on Supercritical Fluids (ISSF 2018), Antibes-Juan-les-Pins, F, April 22-25, 2018.

Syurik, J.; Schwaiger, R.; Sudera, P.; Weyand, S.; Johnsen, S.; Wiegand, G.; Hölscher, H. (2017). Bio-inspired micro-to-nanoporous polymers with tunable stiffness. Beilstein journal of nanotechnology, 8, 906–914. doi:10.3762/bjnano.8.92

Syurik, J.; Siddique, R. H.; Dollmann, A.; Gomard, G.; Schneider, M.; Worgull, M.; Wiegand, G.; Hölscher, H. (2017). Bio-inspired, large scale, highly-scattering films for nanoparticle-alternative white surfaces. Scientific reports, 7, Art. Nr.: 46637. doi:10.1038/srep46637

Kaczowka, E.; Wiegand, G.; Sauer, J. (2017). Investigation of saline hydrothermal phases in geothermal brines - modelling and experimental approaches. Proceedings of the 2nd RESRB 2017 Conference, Wroclaw, PL, June 19-21, 2017. Ed. W. Budzianowski, 45, bp bepress.

Böhm, D.; Grau, T.; Johnsen, S.; Kaczowka, E.; Klotz, A.; Türk, M.; Wiegand, G.; Zehnder, B. (2013). NIR-inline-Monitoring für Mikronisierungsprozesse in überkritischem CO₂. Chancen der Energiewende : wissenschaftliche Beiträge des KIT zur 1. Jahrestagung des KIT-Zentrums Energie, 19.06.2012. Hrsg.: W. Breh, 53–58, KIT Scientific Publishing.

Huth, M.; Johnsen, S.; Michel, S.; Wiegand, G. (2013). Hochdruckuntersuchungen für Geothermie und CCS. Chancen der Energiewende : wissenschaftliche Beiträge des KIT zur 1. Jahrestagung des KIT-Zentrums Energie, 19.06.2012. Hrsg.: W. Breh, 41–46, KIT Scientific Publishing.

Igl-Schmid, N.; Johnsen, S.; Schulmeyr, J.; Wiegand, G.; Wuzik, A.; Zehnder, B. (2013). NIR-inline-Monitoring für Hopfenextraktion in überkritischem CO₂. Chancen der Energiewende : wissenschaftliche Beiträge des KIT zur 1. Jahrestagung des KIT-Zentrums Energie, 19.06.2012. Hrsg.: W. Breh, 47–52, KIT Scientific Publishing.

Dahmen, N.; Kruse, A.; Wiegand, G.; Dinjus, E. (2011). Synthese von Hexansäure in überkritischem CO₂. Chemie Ingenieur Technik, 83, 1399–1404. doi:10.1002/cite.201100031

Wiegand, G.; Johnsen, S.; Zehnder, B. (2009). Maßgeschneidertes NIR-inline-Monitoring-Modul. Einsparung bei der Naturstoffextraktion und Teilereinigung mit CO₂. CITplus, (2009) -8, (7), 41–43.

Seredynska, D.; Ullrich, G.; Wiegand, G.; Dahmen, N.; Dinjus, E. (2007). High-Pressure Vapor-Liquid Equilibria for CO₂ + Hexanal at (323.15, 353.15, and 383.15) K. Journal of Chemical and Engineering Data, 52, 2284–87. doi:10.1021/je700303v

Bürck, J.; Wiegand, G.; Roth, S.; Mathieu, H.; Krämer, K. (2006). Monitoring of technical oils in supercritical CO₂ under continuous flow conditions by NIR spectroscopy and multivariate calibration. Talanta, 68, 1497–1504. doi:10.1016/j.talanta.2005.08.009

Wiegand, G.; Bürck, J.; Roth, S.; Mathieu, H.; Krämer, K. (2003). Development of an in-line NIR monitoring method for supercritical carbon dioxide-based extraction processes. Proc.of the 6th Internat.Symp.on Supercritical Fluids, Versailles, F, April 28-30, 2003 Tome 1: Natural Products - Process and Equipment Development Internat.Soc.for the Advancement of Supercritical Fluids, 2003, 599–604.

Wiegand, G.; Bürck, J.; Roth, S.; Mathieu, H.; Krämer, K. (2002). Combination of phase equilibria and NIR measurements in supercritical carbon dioxide for on-line process analysis. Chemical Engineering Transactions, Proc.of the 4th Internat.Symp.on High Pressure Process Technology and Chemical Engineering, Venezia, I, September 22-25, 2002, 2, 579–84.

Franck, E. U.; Wiegand, G.; Gerhardt, R. (1999). The density of hydrogen fluoride at high pressures to 973 K and 200 MPa. Journal of Supercritical Fluids, J. of supercrit. fluids 15 (1999) S. 127-133., 15, 127–34.

Franck, E. U.; Kerschbaum, S.; Wiegand, G. (1998). The density of toluene at high pressures to 673 K and 300 MPa. Berichte der Bunsengesellschaft für Physikalische Chemie, Ber. d. Bunsenges. f. Phys. Chem. 102 (1998) S. 1794-1797., 102 (12), 1794–97. doi:10.1002/bbpc.19981021208

Franck, E. U.; Wiegand, G.; Dahmen, N. (1996). Water at high pressure and temperature. Ullmann’s Encyclopedia of Industrial Chemistry 5th Completely Rev.Ed. Weinheim [u.a.] : VCH Vol. A. Alphabetically Arranged Articles 28. Water to Zirconium and Zirconium Compounds 1996, 12–21.

Goldacker, H.; Abeln, J.; Kluth, M.; Kruse, A.; Schmieder, H.; Wiegand, G. (1996). Oxidation of organic material in supercritical water and carbon dioxide. Rohr, Rudolf von [Hrsg.] High Pressure Chemical Engineering : Proc.of the 3rd Internat.Symp., Zürich, CH, October 7-9, 1996 Amsterdam [u.a.] : Elsevier, 1996 (Process Technology Proceedings ; 12), 61–66.

Wiegand, G.; Franck, E. U. (1994). Interfacial tension between water and non-polar fluids up to 473 K and 2800 bar. Berichte der Bunsengesellschaft, für Physikalische Chemie, 98, 809–17.