Franziska Wasner
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Franziska Wasner has a total of 21 co-authors. Here are the top co-authors by number of shared publications:
- Danijela Gregurec
Biointerfaces Lab, Department of Chemistry and Pharmacy, Friedrich-Alexander Universität Erlangen-Nuremberg, Erlangen, Germany
2 shared publications - Elif Koçar
Friedrich-Alexander-Universität Erlangen-Nürnberg
2 shared publications - Lorenzo Signorelli
Friedrich-Alexander-Universität Erlangen-Nürnberg
2 shared publications - Vicente Durán Toro
Friedrich-Alexander-Universität Erlangen-Nürnberg
2 shared publications - Alessia Corrado
University of Turin
1 shared publication - Allegra Conti
University of Rome Tor Vergata
1 shared publication
Latest Publications
- Open Access
- 10 August 2025
- Published by American Chemical Society (ACS) in ChemRxiv
Magnetite Nanodiscs as Vortex-Enhanced MRI Contrast Agents: A Novel Approach in Medical Imaging
Magnetic nanodiscs (MNDs) represent a transformative class of anisotropic magnetic nanoparticles with intrinsic vortex magnetization, enabling multifunctional applications in biomedical imaging and therapy. Here, we demonstrate their potential as dual-mode magnetic resonance (MR) contrast agents, a unique feature that is enabled by the high longitudinal relaxivity (r₁ ≈ 40 mM⁻¹s⁻¹) at ultralow magnetic fields ( 150 mM⁻¹s⁻¹) at ultrahigh fields (>7 T). This field-dependent relaxivity profile uniquely positions MNDs as versatile T₁/T₂ agents compatible with emerging low-field MRI platforms and high-resolution clinical systems. Ex vivo and in vivo assessments confirmed clear anatomical localization and preferential hepatic accumulation, suggesting prolonged circulation times due to surface-mediated immune evasion. These properties highlight MNDs as promising candidates for next-generation theranostics, with tunable magnetic responses, high contrast efficiency, and the ability to synergize imaging and neurostimulation.
- 10 August 2025
- Published by American Chemical Society (ACS) in ChemRxiv
Open AccessMagnetite Nanodiscs as Vortex-Enhanced MRI Contrast Agents: A Novel Approach in Medical Imaging
Magnetic nanodiscs (MNDs) represent a transformative class of anisotropic magnetic nanoparticles with intrinsic vortex magnetization, enabling multifunctional applications in biomedical imaging and therapy. Here, we demonstrate their potential as dual-mode magnetic resonance (MR) contrast agents, a unique feature that is enabled by the high longitudinal relaxivity (r₁ ≈ 40 mM⁻¹s⁻¹) at ultralow magnetic fields ( 150 mM⁻¹s⁻¹) at ultrahigh fields (>7 T). This field-dependent relaxivity profile uniquely positions MNDs as versatile T₁/T₂ agents compatible with emerging low-field MRI platforms and high-resolution clinical systems. Ex vivo and in vivo assessments confirmed clear anatomical localization and preferential hepatic accumulation, suggesting prolonged circulation times due to surface-mediated immune evasion. These properties highlight MNDs as promising candidates for next-generation theranostics, with tunable magnetic responses, high contrast efficiency, and the ability to synergize imaging and neurostimulation.
- Open Access
- 29 July 2025
- Published by American Chemical Society (ACS) in ChemRxiv
Hydrophobic-Phase Deposition of Barium Titanate on Cobalt Ferrite nanoparticles from a bimetallic complex precursor for the synthesis of magnetoelectric core-shell materials
We report a novel deposition pathway for barium titanate (BTO) onto hydrophobically coated cobalt ferrite (CFO) nanoparticles, resulting in the formation of magnetoelectric core-shell nanoparticles. Our strategy utilizes a bimetallic Ba and Ti oleate (BTOle) precursor, which hydrophobically interacts with dimethyldioctadecylammonium bromide (DDAB)- stabilized CFO particles during an interfacial phase transfer step. Thermal post-treatment yields a crystalline structure comprising distinguishable BTO and CFO phases, with BTO adopting a distorted cubic to tetragonal crystal phase. Magnetoelectric characterization yields a millivolt voltage-range output, associated with the mechanical coupling between the piezoelectric and magnetostrictive phases. This method circumvents traditional sol-gel limitations and phase transfer hurdles, offering a streamlined route for fabricating magnetoelectric nanoparticles. Our results suggest magnetoelectric particles are suitable for incorporation in wireless actuation technologies.
- 29 July 2025
- Published by American Chemical Society (ACS) in ChemRxiv
Open AccessHydrophobic-Phase Deposition of Barium Titanate on Cobalt Ferrite nanoparticles from a bimetallic complex precursor for the synthesis of magnetoelectric core-shell materials
We report a novel deposition pathway for barium titanate (BTO) onto hydrophobically coated cobalt ferrite (CFO) nanoparticles, resulting in the formation of magnetoelectric core-shell nanoparticles. Our strategy utilizes a bimetallic Ba and Ti oleate (BTOle) precursor, which hydrophobically interacts with dimethyldioctadecylammonium bromide (DDAB)- stabilized CFO particles during an interfacial phase transfer step. Thermal post-treatment yields a crystalline structure comprising distinguishable BTO and CFO phases, with BTO adopting a distorted cubic to tetragonal crystal phase. Magnetoelectric characterization yields a millivolt voltage-range output, associated with the mechanical coupling between the piezoelectric and magnetostrictive phases. This method circumvents traditional sol-gel limitations and phase transfer hurdles, offering a streamlined route for fabricating magnetoelectric nanoparticles. Our results suggest magnetoelectric particles are suitable for incorporation in wireless actuation technologies.