A5090096630- Micro and Nano Robotics
- Molecular Communication and Nanonetworks
- Pickering emulsions and particle stabilization
- Modular Robots and Swarm Intelligence
- Microfluidic and Bio-sensing Technologies
- Characterization and Applications of Magnetic Nanoparticles
- Advanced Materials and Mechanics
- Photoreceptor and optogenetics research
- Sperm and Testicular Function
- Orbital Angular Momentum in Optics
- Innovative Microfluidic and Catalytic Techniques Innovation
- Optical Imaging and Spectroscopy Techniques
- Lipid Membrane Structure and Behavior
- Spectroscopy Techniques in Biomedical and Chemical Research
- Microplastics and Plastic Pollution
- Gold and Silver Nanoparticles Synthesis and Applications
- Electrostatics and Colloid Interactions
- Plant tissue culture and regeneration
- Particle Dynamics in Fluid Flows
- Optical Systems and Laser Technology
- Plant and Fungal Interactions Research
- RNA Interference and Gene Delivery
- Iron Metabolism and Disorders
- Advanced optical system design
- Advanced Thermodynamics and Statistical Mechanics
TU Dresden
2017-2025
University of Strathclyde
2022-2025
Max Planck Institute for Intelligent Systems
2015-2018
Institut Català de Nanociència i Nanotecnologia
2012-2016
Consejo Superior de Investigaciones Científicas
2014
Leibniz Institute for Solid State and Materials Research
2014
Universitat Pompeu Fabra
2011
Municipal Institute for Medical Research
2011
Institute for Sports Medicine
2011
Abstract Achieving control over the directionality of active colloids is essential for their use in practical applications such as cargo carriers microfluidic devices. So far, guidance spherical Janus was mainly realized using specially engineered magnetic multilayer coatings combined with external fields. Here we demonstrate that step-like submicrometre topographical features can be used reliable docking and guiding platforms chemically colloids. For various topographic (stripes, squares or...
Environmental contamination is a major global challenge, and the effects of are found in most habitats. In recent times, pollution by microplastics has come to attention their removal displays an extraordinary challenge with no reasonable solutions presented so far. One new technologies holding many promises for environmental remediation on microscale self-propelled micromotors. They present several properties that academic technical interest, such as ability overcome diffusion limitation...
We develop biohybrid magnetic microrobots by electrostatic self-assembly of nonmotile sperm cells and nanoparticles. Incorporating a biological entity into entails many functional advantages beyond shape templating, such as the facile uptake chemotherapeutic agents to achieve targeted drug delivery. present single-step technique fabricate IRONSperms, soft microswimmers that emulate motion motile cells. Our experiments theoretical predictions show swimming speed IRONSperms exceeds 0.2 body...
ConspectusPhotocatalytic materials are gaining popularity and research investment for developing light-driven micromotors. While most of the early work used highly stable TiO2 as a material to construct micromotors, mostly in combination with noble metals, other semiconductors offer wider range properties, including independence from high-energy UV light. This review focuses on our BiVO4 which has shown promise due its small band gap resulting ability absorb blue Additionally, this salt's...
Janus particles can self-assemble around microfabricated gears in reproducible configurations with a high degree of spatial and orientational order. The final configuration maximizes the torque applied on rotor leading to unidirectional steady rotating motion. interplay between geometry dynamical behavior leads self-assembly micromotors starting from randomly distributed particles. manipulation, transport, assembly microobjects is paramount importance for microengineering biological...
There has been a significant interest in the development of microswimmers for medical drug and cargo delivery, but majority current micromotors rely on toxic fuel sources materials their design making them irrelevant biomedical applications. Bacteria represent an excellent motor alternative, as they are powered using surrounding biological fluids. For motile, biohybrid swimmer, Escherichia coli ( E. ) integrated onto metal capped, polystyrene (PS) Janus particles. Fabrication is rapid simple...
Synthetic micro- and nanomotors (MNMs) have emerged as a vibrant research field in multidisciplinary nanotechnology with proof-of-concept applications various disciplines.
For natural microswimmers, the interplay of swimming activity and external flow can promote robust motion, e.g. propulsion against ("upstream rheotaxis") or perpendicular to direction flow. These effects are generally attributed their complex body shapes flagellar beat patterns. Here, using catalytic Janus particles as a model experimental system, we report on strong directional response that occurs for spherical active in channel The align axes be nearly both normal vector nearby bounding...
Fluid flow is ubiquitous in many environments that form habitats for microorganisms. Therefore, it not surprising both biological and artificial microswimmers show responses to flows are determined by the interplay of chemical physical factors. In particular, deepen understanding how different systems respond flows, crucial comprehend influence played swimming pattern. The tendency organisms navigate up or down termed rheotaxis. Early theoretical studies predicted a positive rheotactic...
Abstract An innovative self‐propelled nanodevice able to perform motion, cargo transport, and target recognition is presented. The system based on a mesoporous motor particle, which asymmetrically functionalized by the attachment of single‐stranded DNA onto one its faces, while catalase immobilized other face. This enzyme allows catalytic decomposition hydrogen peroxide oxygen water, giving rise driving force for motion whole system. Moreover particles are capture transport with...
The development of artificial micromotors is one the greatest challenges modern nanotechnology. Even though many kinds motors have been published in recent times, systematic studies on influence components fuel solution are widely missing. Therefore, autonomous movement Pt-microtubes and Pt-covered silica particles comparatively observed presence absence surfactants medium. One representative each three main surfactant classes - anionic (sodium dodecyl sulfate, SDS), cationic (benzalkonium...
Self-propelled micromotors are emerging as important tools that help us understand the fundamentals of motion at microscale and nanoscale. Development motors for various biomedical environmental applications is being pursued. Multiple fabrication methods can be used to construct geometries different sizes motors. Here, we present an overview appropriate according both size shape requirements concept guiding catalytic within confines wall. Micromotors have also been incorporated with...
Microplastics are a significant environmental threat and the lack of efficient removal techniques further amplifies this crisis. Photocatalytic semiconducting nanoparticles have potential to degrade micropollutants, among them microplastics. The hydrodynamic effects leading propulsion micromotors can lead accumulation microplastics in close vicinity micromotor. Incorporating these different properties into single photocatalytic micromotor (self-propulsion, phoretic assembly passive colloids...
We report novel metal-capped TiO<sub>2</sub> photochemically-active colloids endowed with a ‘hybrid drive’: directional motion is achieved in water upon UV illumination, as well dilute peroxide solutions illumination or visible light.
Abstract In the field of micromotors many efforts have been taken to find a substitute for peroxide as fuel. While most approaches turn towards other toxic high energy chemicals such hydrazine, we introduce here an source that is widely used in nature: light. Light ideal and some materials, AgCl, inherent property transform light chemical processes, which can be achieve propulsion. case silver chloride, one process observed after exposure surface modification, leads release ions, generating...
Abstract Technical design features for improving the way a passive elastic filament produces propulsive thrust can be understood by analyzing deformation of sperm‐templated microrobots with segmented magnetization. Magnetic nanoparticles are electrostatically self‐assembled on bovine sperm cells nonuniform surface charge, producing different categories microrobots. Depending amount and location each cellular segment, magnetoelastic viscous forces determine wave pattern category during...
Abstract Active particles are known to exhibit collective behavior and induce structure in a variety of soft‐matter systems. However, many naturally occurring complex fluids mixtures active passive components. The authors examine how activity induces organization such multi‐component Mixtures colloids colloidal micromotors investigated it is observed that even small fraction reorganization the components an intriguing series phenomena. Experimental observations combined with large‐scale...
Due to the intrinsically complex non-equilibrium behavior of constituents active matter systems, a comprehensive understanding their collective properties is challenge that requires systematic bottom-up characterization individual components and interactions. For self-propelled particles, intrinsic complexity stems from fact polar nature colloids necessitates interactions depend on positions orientations leading 2d - 1 dimensional configuration space for each particle, in d dimensions....
Microplastics - defined as tiny polymer fragments less than 5 mm in size pose a clear threat to wide range of small organisms through ingestion, leading starvation. In addition, there are many reports their occurrence both remote geographical areas and the human body. Small made mostly inert materials, they significant analytical challenge. While primary microplastics i.e., those manufactured intentionally, have characteristics, secondary resulting from degradation larger plastic debris much...
Intelligent soft matter stands at the intersection of materials science, physics, and cognitive promising to change how we design interact with materials. This transformative field seeks create that possess life-like capabilities, such as perception, learning, memory, adaptive behavior. Unlike traditional materials, which typically perform static or predefined functions, intelligent dynamically interacts its environment. It integrates multiple sensory inputs, retains experiences, makes...