J
Johan van Lierop
Researcher at University of Manitoba
Publications - 48
Citations - 916
Johan van Lierop is an academic researcher from University of Manitoba. The author has contributed to research in topics: Coercivity & Magnetism. The author has an hindex of 13, co-authored 48 publications receiving 663 citations.
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Journal ArticleDOI
Iron(II) coordination complexes with panchromatic absorption and nanosecond charge-transfer excited state lifetimes.
Jason D. Braun,Issiah B. Lozada,Charles Kolodziej,Clemens Burda,Kelly M. E. Newman,Johan van Lierop,Rebecca L. Davis,David E. Herbert +7 more
TL;DR: This finding shows how ligand design can extend metal-to-ligand charge-transfer-type excited state lifetimes of iron(ii) complexes into the nanosecond regime and expand the range of potential applications for iron-based photosensitizers.
Journal ArticleDOI
Internal Magnetic Structure of Nanoparticles Dominates Time-Dependent Relaxation Processes in a Magnetic Field
Cindi L. Dennis,Kathryn Krycka,Julie A. Borchers,Ryan D. Desautels,Johan van Lierop,Natalie Frey Huls,Andrew Jackson,Andrew Jackson,Cordula Gruettner,Robert Ivkov +9 more
TL;DR: In this article, the influence of internal nanoparticle (intracore) magnetic domain structure on relaxation remains unexplored, and dramatic differences observed among the specific loss power of three magnetic iron oxide nanoparticle constructs having comparable size and chemical composition.
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Spin canting across core/shell Fe 3 O 4 /Mn x Fe 3−x O 4 nanoparticles
Samuel D. Oberdick,Samuel D. Oberdick,Ahmed Abdelgawad,Carlos Moya,Samaneh Mesbahi-Vasey,Demie Kepaptsoglou,Vlado K. Lazarov,Richard F. L. Evans,Daniel Meilak,Elizabeth Skoropata,Johan van Lierop,Ian Hunt-Isaak,Hillary Pan,Yumi Ijiri,Kathryn Krycka,Julie A. Borchers,Sara A. Majetich +16 more
TL;DR: It is demonstrated that intraparticle effects can induce spin canting throughout a MNP via the Dzyaloshinskii-Moriya interaction (DMI), and results illuminate how core/shell nanoparticle systems can be engineered forspin canting across the whole of the particle, rather than solely at the surface.
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Hierarchical self-assembly and optical disassembly for controlled switching of magnetoferritin nanoparticle magnetism.
Mauri A. Kostiainen,Pierpaolo Ceci,Manuela Fornara,Panu Hiekkataipale,OI Kasyutich,Roeland J. M. Nolte,Jeroen J. L. M. Cornelissen,Ryan D. Desautels,Johan van Lierop +8 more
TL;DR: Rec recombinant ferritin protein cages encapsulating Fe(3)O(4)-γ-Fe(2)O (3) iron oxide (magnetoferritin) nanoparticles and photodegradable Newkome-type dendrons self-assemble into micrometer-sized complexes with a face-centered-cubic (fcc) superstructure and a lattice constant of 13.1 nm.
Journal ArticleDOI
A new tool to attack biofilms: driving magnetic iron-oxide nanoparticles to disrupt the matrix
TL;DR: This work uses magnetic iron oxide nanoparticles (MNPs) in combination with magnetic fields to damage the biofilm matrix and cause detachment, achieving up to a nearly 5 log10 reduction in biofilm bacteria after treatment with 30 mg mL-1 of 11 nm MNPs using a magnetic field.