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@PHDTHESIS{Braunmiller:1010161,
author = {Braunmiller, Dominik Lukas},
othercontributors = {Crassous, Jérôme Joseph Emile and De Laporte, Laura},
title = {{D}esign and applications of anisotropic magnetic hybrid
microgels},
school = {RWTH Aachen University},
type = {Dissertation},
address = {Aachen},
publisher = {RWTH Aachen University},
reportid = {RWTH-2025-03894},
pages = {1 Online-Ressource : Illustrationen},
year = {2025},
note = {Veröffentlicht auf dem Publikationsserver der RWTH Aachen
University; Dissertation, RWTH Aachen University, 2025},
abstract = {Magnetic nanoparticles (MNPs) are extensively researched
and utilized in various applications, including biomedicine,
sensors, and materials science. In some cases, there is a
preference for soft materials over rigid particles, leading
to an increased interest in magnetic soft matter materials,
such as magnetic hybrid microgels (MMGs). This thesis
explores the preparation, characterization, and applications
of MMGs with different sizes, shapes, and compositions by
using ellipsoidal maghemite MNPs as the foundation for
incorporating specific magnetic properties into microgels.
The first focus is on the synthesis of small anisotropic
MMGs utilizing a precipitation polymerization method. These
microgels feature a single MNP core surrounded by a
thermoresponsive microgel shell. The nanoscale structures
exhibit tunable dipolar interactions and anisotropic
properties, making them ideal tracers in dense microgel
systems. By utilizing these MMGs to investigate complex
phase behaviors and dynamics, the findings provide valuable
insights into the relationship between microgel dimensions,
softness, and dynamic phase behavior. Additionally, emphasis
is placed on the development of rod-shaped MMGs as
pre-programmable building blocks for tissue engineering
applications. Using the PRINT technique, rod-shaped MMGs are
created with adjustable magnetic properties by incorporating
and pre-aligning MNPs during synthesis. This approach allows
for precise control over magnetic behavior, enabling the
design of multi-directional scaffolds that guide cell
growth. This positions pre-programmed rod-shaped MMGs as
promising materials for advanced tissue engineering
applications, such as wound healing, regenerative medicine,
and drug testing platforms. Finally, the exploration of
larger MMGs focuses on their potential role as
microactuators in active microfluidic devices. The
fabrication of complex-shaped MMGs is achieved using
stop-flow lithography in combination with a magnetic field,
allowing for the creation of intricate 3D geometries with
precise nanoparticle pre-alignment. These MMGs exhibit
strong magnetic properties, making them suitable for
actuator applications.},
cin = {156130 / 150000},
ddc = {540},
cid = {$I:(DE-82)156130_20190213$ / $I:(DE-82)150000_20140620$},
pnm = {DFG project G:(GEPRIS)191948804 - SFB 985: Funktionelle
Mikrogele und Mikrogelsysteme (191948804) / SFB 985 B05 -
Anisometrische Mikrogele für die Konstruktion
3D-responsiver makroporöser Strukturen zur Ausrichtung und
mechanischen Stimulation von Zellen (B05) (221474668)},
pid = {G:(GEPRIS)191948804 / G:(GEPRIS)221474668},
typ = {PUB:(DE-HGF)11},
doi = {10.18154/RWTH-2025-03894},
url = {https://publications.rwth-aachen.de/record/1010161},
}
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