Anke Klingner
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View article: Swimming dynamics of screw-shaped untethered magnetic robots in confined spaces
Swimming dynamics of screw-shaped untethered magnetic robots in confined spaces Open
In confined environments, the propulsion speed of torque-driven helical untethered magnetic robots (UMRs) depends on vessel diameter and helical pitch. This phenomenon likely affects the swimming speed of these robots when navigating in vi…
View article: Fabrication of Iron oxide nanoparticle loaded recycled PET nanofibers for water purification applications
Fabrication of Iron oxide nanoparticle loaded recycled PET nanofibers for water purification applications Open
This study investigates the development and performance of polyethylene terephthalate (PET) nanofibers, made from recycled PET bottles, for water purification applications. The research focuses on incorporating Iron Oxide (Fe 3 O 4 ) nanop…
View article: Fabrication and Characterization of Nano-loaded Recycled Materials for Water Purification, Part I: Iron Oxide Nanoparticles Incorporation
Fabrication and Characterization of Nano-loaded Recycled Materials for Water Purification, Part I: Iron Oxide Nanoparticles Incorporation Open
This study investigates the development and performance of polyethylene terephthalate (PET) nanofiber, made from recycled PET bottles, for water purification applications. The research focuses on incorporating Iron Oxide (Fe3O4) nanopartic…
View article: Locomotion of paired spermatozoa during flagellar synchronisation
Locomotion of paired spermatozoa during flagellar synchronisation Open
Microorganisms, such as spermatozoa, exhibit rich behaviours when in close proximity to each other. However, their locomotion is not fully understood when coupled mechanically and hydrodynamically. In this study, we develop hydrodynamic mo…
View article: Wireless mechanical and hybrid thrombus fragmentation of <i>ex vivo</i> endovascular thrombosis model in the iliac artery
Wireless mechanical and hybrid thrombus fragmentation of <i>ex vivo</i> endovascular thrombosis model in the iliac artery Open
This study investigates the efficacy of an untethered magnetic robot (UMR) for wireless mechanical and hybrid blood clot removal in ex vivo tissue environments. By integrating x-ray-guided wireless manipulation with UMRs, we aim to address…
View article: Author Correction: Ex vivo validation of magnetically actuated intravascular untethered robots in a clinical setting
Author Correction: Ex vivo validation of magnetically actuated intravascular untethered robots in a clinical setting Open
Correction to: Communications Engineeringhttps://doi.org/10.1038/s44172-024-00215-2, published online 16 May 2024 In the version of the article initially published, Michiel Warlé was incorrectly associated with the Department of Physics, G…
View article: Magnetic alginate microrobots with dual-motion patterns through centrifugally driven flow control
Magnetic alginate microrobots with dual-motion patterns through centrifugally driven flow control Open
Mobile microrobots have gained increasing attention in biomedical applications because they can be precisely actuated to targeted positions in a tiny space. However, their use in biomedical applications is hindered by the costly and compli…
View article: Exploring sperm cell motion dynamics: Insights from genetic algorithm-based analysis
Exploring sperm cell motion dynamics: Insights from genetic algorithm-based analysis Open
Accurate analysis of sperm cell flagellar dynamics plays a crucial role in understanding sperm motility as flagella parameters determine cell behavior in the spatiotemporal domain. In this study, we introduce a novel approach by harnessing…
View article: Recycling agriculture waste for liquid deposition 3D printing
Recycling agriculture waste for liquid deposition 3D printing Open
3D printing is a promising technology for recycling agricultural waste by liquid deposition modeling (LDM). In this paper, we propose a novel method for recycling agricultural waste to be used in liquid deposition 3D printing. The method i…
View article: Recycling Agriculture Waste for Liquid Deposition 3D Printing
Recycling Agriculture Waste for Liquid Deposition 3D Printing Open
3D printing is a promising technology for recycling agricultural waste by Liquid Deposition Modeling (LDM). In this paper, we propose a novel method for recycling agricultural waste to be used in Liquid Deposition 3D printing. The method i…
View article: Ex Vivo Validation of Magnetically Actuated Intravascular Untethered Robots in a Clinical Setting
Ex Vivo Validation of Magnetically Actuated Intravascular Untethered Robots in a Clinical Setting Open
Intravascular surgical instruments necessitate precise navigation within narrow vessels, requiring maximum flexibility, minimal diameter, and high degrees of freedom. However, existing tools often lack adequate control during insertion due…
View article: Soft Bio‐Microrobots: Toward Biomedical Applications
Soft Bio‐Microrobots: Toward Biomedical Applications Open
Soft bio‐microrobots have the potential to execute complex tasks in unexpected and harsh environments of the human body due to their dexterity and flexibility. The architectural designs of soft bio‐microrobots either replicate the motion o…
View article: Locomotion of bovine spermatozoa during the transition from individual cells to bundles
Locomotion of bovine spermatozoa during the transition from individual cells to bundles Open
Various locomotion strategies employed by microorganisms are observed in complex biological environments. Spermatozoa assemble into bundles to improve their swimming efficiency compared to individual cells. However, the dynamic mechanisms …
View article: Flagellar Propulsion of Sperm Cells Against a Time‐Periodic Interaction Force (Adv. Biology 1/2023)
Flagellar Propulsion of Sperm Cells Against a Time‐Periodic Interaction Force (Adv. Biology 1/2023) Open
Flagellar Propulsion The image representing article 2200210, Magdanz, Khalil and co-workers show a collinear bundle under the scanning electron microscope. The collinear bundle consists of two sperm cells with opposite orientations. In the…
View article: IRONSperm swimming by Rigid-Body Rotation Versus Transverse Bending Waves
IRONSperm swimming by Rigid-Body Rotation Versus Transverse Bending Waves Open
Cell membrane potential affects the electrostatic self-assembly of magnetizable nanoparticles around the flagellum of sperm cells, leading to the formation of biohybrid microrobots (i.e. IRONSperm) with various bending stiffness. Here we e…
View article: Flagellar Propulsion of Sperm Cells Against a Time‐Periodic Interaction Force
Flagellar Propulsion of Sperm Cells Against a Time‐Periodic Interaction Force Open
Sperm cells undergo complex interactions with external environments, such as a solid‐boundary, fluid flow, as well as other cells before arriving at the fertilization site. The interaction with the oviductal epithelium, as a site of sperm …
View article: Modeling and Characterization of the Passive Bending Stiffness of Nanoparticle‐Coated Sperm Cells using Magnetic Excitation
Modeling and Characterization of the Passive Bending Stiffness of Nanoparticle‐Coated Sperm Cells using Magnetic Excitation Open
Of all the various locomotion strategies in low‐, traveling‐wave propulsion methods with an elastic tail are preferred because they can be developed using simple designs and fabrication procedures. The only intrinsic property of the elasti…
View article: Impact of Segmented Magnetization on the Flagellar Propulsion of Sperm‐Templated Microrobots
Impact of Segmented Magnetization on the Flagellar Propulsion of Sperm‐Templated Microrobots Open
Technical design features for improving the way a passive elastic filament produces propulsive thrust can be understood by analyzing the deformation of sperm‐templated microrobots with segmented magnetization. Magnetic nanoparticles are el…
View article: Control of Magnetically-Driven Screws in a Viscoelastic Medium
Control of Magnetically-Driven Screws in a Viscoelastic Medium Open
Magnetically-driven screws operating in softtissue environments could be used to deploy localized therapy or achieve minimally invasive interventions. In this work, we characterize the closed-loop behavior of magnetic screws in an agar gel…
View article: Helical Structures for Medical Applications
Helical Structures for Medical Applications Open
The latest advances in the field of microrobotics assisted medical experts in the treatment of some of human diseases especially intravascular diseases such as atherosclerosis. In this research, a phantom for the atherosclerotic plaque mat…
View article: Fabrication of Magnetic Molecularly Imprinted Beaded Fibers for Rosmarinic Acid
Fabrication of Magnetic Molecularly Imprinted Beaded Fibers for Rosmarinic Acid Open
The present study describes the fabrication of molecularly imprinted (MI) magnetic beaded fibers using electrospinning. Rosmarinic acid was selected as exemplary yet relevant template during molecular imprinting. A “design of experiments” …
View article: IRONSperm: Sperm-templated soft magnetic microrobots
IRONSperm: Sperm-templated soft magnetic microrobots Open
IRONSperms are microrobots templated by sperm cells, powered by magnetic fields, loaded with drugs, and localized by ultrasound.
View article: Controlled Noncontact Manipulation of Nonmagnetic Untethered Microbeads Orbiting Two-Tailed Soft Microrobot
Controlled Noncontact Manipulation of Nonmagnetic Untethered Microbeads Orbiting Two-Tailed Soft Microrobot Open
A rotating two-tailed soft microrobot induces a frequency dependent flow-field in low Reynolds number fluids. We use this flow-field to achieve noncontact manipulation of nonmagnetic microbeads with average diameter of 30 μ m in 2-D space.…
View article: Resemblance between motile and magnetically actuated sperm cells
Resemblance between motile and magnetically actuated sperm cells Open
The active flagellum propels a motile sperm cell by traveling bending waves. Here, we demonstrate that non-motile cells have the capacity to be wirelessly actuated by external magnetic fields and reveal insights into their propulsion chara…