• Untersuchung der Herstellung von mehreren exzentrischen, unrunden Querschnitten mittels Querkeilwalzen : Abschlußbericht DFG Projektnr. 413630938 

  Roe, Christopher (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2024)

  In diesem Bericht werden die Grundlagen zum Flachbackenwalzen unrunder Querschnitte beschrieben. Die Untersuchung der Machbarkeit erfolgte zunächst theoretisch mithilfe von FEM Simulationen und wurde anschließend experimentell ...
• Triple-junction perovskite-perovskite-silicon solar cells with power conversion efficiency of 24.4% 

  Hu, Hang; An, Sophie X.; Li, Yang; Orooji, Seyedamir; Singh, Roja; Schackmar, Fabian; Laufer, Felix; Jin, Qihao; Feeney, Thomas; Diercks, Alexander; Gota, Fabrizio; Moghadamzadeh, Somayeh; Pan, Ting; Rienäcker, Michael; Peibst, Robby; Nejand, Bahram Abdollahi; Paetzold, Ulrich W. (Cambridge : RSC Publ., 2024)

  The recent tremendous progress in monolithic perovskite-based double-junction solar cells is just the start of a new era of ultra-high-efficiency multi-junction photovoltaics. We report on triple-junction perovskite-pero ...
• The Impact of Measurement Conditions on Solar Cell Efficiency 

  Rauer, Michael; Fell, Andreas; Wöhler, Wilkin; Hinken, David; Reichel, Christian; Bothe, Karsten; Schubert, Martin C.; Hohl-Ebinger, Jochen (Weinheim : Wiley-VCH, 2023)

  Precise solar cell measurements become more and more challenging due to the increasing complexity of metallization patterns and the sensitivity to rear side illumination for bifacial cell concepts. In this context, the ...
• Large-scale spatiotemporal calculation of photovoltaic capacity factors using ray tracing: A case study in urban environments 

  Bredemeier, Dennis; Schinke, Carsten; Niepelt, Raphael; Brendel, Rolf (Chichester : Wiley, 2023)

  Photovoltaics (PVs) on building facades, either building-integrated or building-attached, offer a large energy yield potential especially in densely populated urban areas. Targeting this potential requires the availability ...
• Influence of specific characteristics of subjects and environmental conditions on comfort level during showering 

  Albrecht, K; Keuler, J; Pärisch, P (Bristol : IOP Publ., 2023)

  In systems that do not store domestic hot water (DHW), temperature fluctuations occur in the hot water temperature at the outlet when the DHW load changes. If these temperature fluctuations arrive at the tapping point, ...
• Multi-criteria comparison of various drinking water installations for low-temperature supply systems in apartments 

  Pärisch, Peter; Distelhoff, Mark; Keuler, Jonas; Lampe, Carsten; Graf, Christopher; Cadenbach, Anna (Bristol : IOP Publ., 2023)

  Rules to prevent from legionnaires disease gain importance as the building sector, esp. multi-family houses, needs to be decarbonized with temperature sensitive heat pumps. As legionella grow often in the peripheries of ...
• Solar cell efficiency tables (Version 63) 

  Green, Martin A.; Dunlop, Ewan D.; Yoshita, Masahiro; Kopidakis, Nikos; Bothe, Karsten; Siefer, Gerald; Hao, Xiaojing (Chichester : Wiley, 2023)

  Consolidated tables showing an extensive listing of the highest independently confirmed efficiencies for solar cells and modules are presented. Guidelines for inclusion of results into these tables are outlined and new ...
• LISA Galactic Binaries with Astrometry from Gaia DR3 

  Kupfer, Thomas; Korol, Valeriya; Littenberg, Tyson B.; Shah, Sweta; Savalle, Etienne; Groot, Paul J.; Marsh, Thomas R.; Le Jeune, Maude; Nelemans, Gijs; Pala, Anna F.; Petiteau, Antoine; Ramsay, Gavin; Steeghs, Danny; Babak, Stanislav (London : Institute of Physics Publ., 2024)

  Galactic compact binaries with orbital periods shorter than a few hours emit detectable gravitational waves (GWs) at low frequencies. Their GW signals can be detected with the future Laser Interferometer Space Antenna ...
• Testing strengths, limitations, and biases of current pulsar timing arrays'detection analyses on realistic data 

  Valtolina, Serena; Shaifullah, Golam; Samajdar, Anuradha; Sesana, Alberto (Les Ulis : EDP Sciences, 2024)

  State-of-the-art searches for gravitational waves (GWs) in pulsar timing array (PTA) datasets model the signal as an isotropic, Gaussian, and stationary process described by a power law. In practice, none of these properties ...
• Algorithmic Pulsar Timer for Binaries 

  Taylor, Jackson; Ransom, Scott; Padmanabh, Prajwal V. (London : Institute of Physics Publ., 2024)

  Pulsar timing is a powerful tool that, by accounting for every rotation of a pulsar, precisely measures the spin frequency, spin frequency derivatives, astrometric position, binary parameters when applicable, properties ...
• Simple parameter estimation using observable features of gravitational-wave signals 

  Fairhurst, Stephen; Hoy, Charlie; Green, Rhys; Mills, Cameron; Usman, Samantha A. (Ridge, NY : American Physical Society, 2023)

  Using simple, intuitive arguments, we discuss the expected accuracy with which astrophysical parameters can be extracted from an observed gravitational wave signal. The observation of a chirplike signal in the data allows ...
• Characterization and evasion of backscattered light in the squeezed-light enhanced gravitational wave interferometer GEO 600 

  Bergamin, Fabio; Lough, James; Schreiber, Emil; Grote, Hartmut; Mehmet, Moritz; Vahlbruch, Henning; Affeldt, Christoph; Andric, Tomislav; Bisht, Aparna; Brinkmann, Marc; Kringel, Volker; Lück, Harald; Mukund, Nikhil; Nadji, Severin; Sorazu, Borja; Strain, Kenneth; Weinert, Michael; Danzmann, Karsten (Washington, DC : Optica, 2023)

  Squeezed light is injected into the dark port of gravitational wave interferometers, in order to reduce the quantum noise. A fraction of the interferometer output light can reach the OPO due to sub-optimal isolation of the ...
• Tilt-to-length coupling in LISA Pathfinder: A data analysis 

  Armano, M.; Audley, H.; Baird, J.; Binetruy, P.; Born, M.; Bortoluzzi, D.; Castelli, E.; Cavalleri, A.; Cesarini, A.; Cruise, A. M.; Danzmann, K.; de Deus Silva, M.; Diepholz, I.; Dixon, G.; Dolesi, R.; Ferraioli, L.; Ferroni, V.; Fitzsimons, E. D.; Freschi, M.; Gesa, L.; Giardini, D.; Gibert, F.; Giusteri, R.; Grimani, C.; Grzymisch, J.; Harrison, I.; Hartig, M-S.; Heinzel, G.; Hewitson, M.; Hollington, D.; Hoyland, D.; Hueller, M.; Inchauspé, H.; Jennrich, O.; Jetzer, P.; Johann, U.; Johlander, B.; Karnesis, N.; Kaune, B.; Killow, C. J.; Korsakova, N.; Lobo, J. A.; López-Zaragoza, J. P.; Maarschalkerweerd, R.; Mance, D.; Martín, V.; Martin-Polo, L.; Martin-Porqueras, F.; Martino, J.; McNamara, P. W.; Mendes, J.; Mendes, L.; Meshksar, N.; Nofrarias, M.; Paczkowski, S.; Perreur-Lloyd, M.; Petiteau, A.; Plagnol, E.; Ramos-Castro, J.; Reiche, J.; Rivas, F.; Robertson, D. I.; Russano, G.; Sanjuan, J.; Slutsky, J.; Sopuerta, C. F.; Sumner, T.; Tevlin, L.; Texier, D.; Thorpe, J. I.; Vetrugno, D.; Vitale, S.; Wanner, G.; Ward, H.; Wass, P. J.; Weber, W. J.; Wissel, L.; Wittchen, A.; Zweifel, P. (Ridge, NY : American Physical Society, 2023)

  We present a study of the tilt-to-length coupling noise during the LISA Pathfinder mission and how it depended on the system's alignment. Tilt-to-length coupling noise is the unwanted coupling of angular and lateral ...
• Method Comparison for Simulating Non-Gaussian Beams and Diffraction for Precision Interferometry 

  Zhao, Mengyuan; Tao, Yazheng; Weber, Kevin; Kaune, Tim; Schuster, Sönke; Hao, Zhenxiang; Wanner, Gudrun (Basel : MDPI, 2023)

  In the context of simulating precision laser interferometers, we use several examples to compare two wavefront decomposition methods—the Mode Expansion Method (MEM) and the Gaussian Beam Decomposition (GBD) method—for their ...
• Properties of quasilocal mass in binary black hole mergers 

  Pook-Kolb, Daniel; Zhao, Bowen; Andersson, Lars; Krishnan, Badri; Yau, Shing-Tung (Ridge, NY : American Physical Society, 2023)

  Identifying a general quasilocal notion of energy-momentum and angular momentum would be an important advance in general relativity with potentially important consequences for mathematical and astrophysical studies in ...
• Optimal Ramsey interferometry with echo protocols based on one-axis twisting 

  Scharnagl, M.S.; Kielinski, T.; Hammerer, K. (Woodbury, NY : Inst., 2023)

  We study a variational class of generalized Ramsey protocols that include two one-axis twisting (OAT) operations, one performed before the phase imprint and the other after. In this framework, we optimize the axes of the ...
• Eccentricity-tide coupling: Impact on binary neutron stars and extreme mass ratio inspirals 

  Bernaldez, John Paul; Datta, Sayak (Ridge, NY : American Physical Society, 2023)

  We study the effect of tidal interaction between two compact bodies in an eccentric orbit. We assume the tidal fields to be static. Therefore, we ignore the dynamic tides and resonant excitations. Using the results, we ...
• Single-Element Dual-Interferometer for Precision Inertial Sensing: Sub-Picometer Structural Stability and Performance as a Reference for Laser Frequency Stabilization 

  Huarcaya, Victor; Dovale Álvarez, Miguel; Yamamoto, Kohei; Yang, Yichao; Gozzo, Stefano; Martínez Cano, Pablo; Mehmet, Moritz; Esteban Delgado, Juan José; Jia, Jianjun; Heinzel, Gerhard (Basel : MDPI, 2023)

  Future GRACE-like geodesy missions could benefit from adopting accelerometer technology akin to that of the LISA Pathfinder, which employed laser interferometric readout at the sub-picometer level in addition to the ...
• Sensitivity of process signals to deviations in material distribution and material properties of hybrid workpieces 

  Denkena, Berend; Behrens, Bernd-Arno; Overmeyer, Ludger; Kaierle, Stefan; Bergmann, Benjamin; Klemme, Heinrich; Hermsdorf, Jörg; Stonis, Malte; Schwarz, Nick; Budde, Laura; Merkel, Paulina; Handrup, Miriam (London : Springer, 2023)

  Hybrid components, made of multiple materials, can meet the increasing demands for lightweight construction and functional integration in the automotive and aircraft industry. Hybrid semi-finished components are produced ...
• Assembly cell for the manufacturing of flexible solar modules in building integrated photovoltaics 

  Blankemeyer, Sebastian; Schulte-Huxel, Henning; Wirtz, Wiebke; Raatz, Annika (Amsterdam [u.a.] : Elsevier, 2024)

  The current use of photovoltaics is often limited to the utilization of roof surfaces or ground-mounted systems. In particular, building integrated photovoltaics (BIPV) have enormous potential to make energy production ...

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