Research

2016-2020 Mechanical properties, specific release and motility of patchy colloidosomes.
Funder: Polish National Science Centre (OPUS10, 2015/19/B/ST3/03055), PLN 1 162 000, Principal investigator

Within the project, we study patchy particle capsules initially made on a surface of liquid droplets. The investigation concern the mechanical properties; specific direction and targeted release of encapsulated species; and the motility of such heterogeneous colloidal capsules (patchy colloidosomes). The main objectives of the project are: to further develop fabrication methods of patchy colloidosomes and hybrid patchy colloidal capsules on the bases of my recent pioneering work in this field; to understand the mechanism of complex deformation of patchy colloidal capsules; to develop routes for specific and targeted release of encapsulated species from patchy colloidosomes; and research on the guided-motion, self-propulsion and collective behaviour of patchy colloidosomes.

2017-2019 Electric field driven propulsion and collective dynamics of homogeneous and patchy capsules.
Funder: European Commission (H2020-MSCA-IF-2016), EUR 134 462, Project coordinator

Particle capsules, and especially patchy particle capsules are challenging to fabricate. To realize the potential applications of these capsules, it is also important to consistently produce capsules with tailored physical and mechanical properties. One of the objectives of this action was to combine microfluidic devices and electric fields for high-throughput fabrication of patchy capsules. Realizing this objective was also necessary to study the collective dynamics of multiple propelling capsules which was the last objective of this research project.

2015-2017 Mechanical properties and instability of Pickering films and emulsions.
Funder: Polish National Science Centre (FUGA, 2015/16/S/ST3/00470), PLN 286 000, Principal investigator

This was a research project in experimental soft matter physics focused on understanding the mechanics and rheology of monolayered colloidal capsules and instabilities of Pickering droplets probed by electrically induced stress. Within the project, we studied colloidal capsules (composed of jammed particles) made on a surface of oil droplets. The investigation concerned the viscoelastic deformation, crumbling, rotation or tank-treading of a single capsule due to applied external E-fields. We also monitored changes of mechanical properties of droplets as the Pickering emulsion was produced.

2013-2015 A new approach to fabricating various colloidal shells and Pickering emulsions.
Funder: Foundation for Polish Science (HOMING PLUS, 2013-7/13), PLN 309 000, Principal investigator

This project focused on new methods of fabrication of Colloidosomes/Janus/Patchy/Arrested shells. We also produced an active colloidal armour, i.e. a pupil-like shell that contracts and expands in presence of E-fields. We studied silicone oil droplets, containing different particles (including clay, PE. PS or conductive beads), that were submerged in immiscible organic oil, and we observed particle movement, oil circulation and drop deformation when an electric field is applied. Results showed how electric field strength, electrohydrodynamics, dielectric and conductive properties determine the fluid flow, particle organization and drop deformation. Adsorption and assembly of colloidal particles at the surface of liquid droplets is the basis for particle-stabilized Pickering emulsions and colloidosome capsules. This work was conducted in collaboration with group at NTNU, Trondheim.

2011-2013 Sorption and Migration of CO2 in porous media.
Funder: Research Council of Norway (CLIMIT), NOK 18.3 M, co-investigator

The project was a collaboration within the COMPLEX-network, and involved experimental studies as well as numerical studies focused on the behaviour of CO2 in general porous materials, and near surfaces made out of clays. At NTNU the project involved synchrotron X-ray scattering techniques (WAXS/SAXS) and rhemoetry, neutron scattering techniques (SANS) were used at IFE, Kjeller, and the flow of CO2 in model porous media was studied at UiO, Oslo. The project was relevant both for capturing and storage of CO2. In particular it was important to understand the interactions between clay particles, and CO2 in the context of CO2 storage in underground reservoirs, since the cap-rocks in such systems contain large amounts of clays, i.e. the project was on understanding CO2 near and inside material from the nano scientific point of view, and then focused on how to upscale the nanophysics, to the macrophysics scale.

2007-2011 Self assembly from selected particles in suspension.
Funder: Research Council of Norway (FRINAT), NOK 5.8 M, co-investigator

The research involved studies of general physical processes and phenomena in electrorheological (ER) and magnetorheological (MR) systems by means of experimental methods such as x-ray scattering (WAXS/SAXS), atomic force microscopy (AFM), scanning electron microscopy (SEM), rheometry, etc. In addition to working with these techniques at laboratories at NTNU, experiments were performed at X-ray synchrotron sources, and in collaboration with, foreign laboratories and research groups: France (ESRF), Sweden (MAX-LAB), and other countries.

2006-2007 Advanced Methods and Tools for Handling and Assembly in Microtechnology.
Funder: European Commission (FP6-2002-MOBILITY-1), EUR 3 M, co-investigator

ASSEMIC was devoted to training and research in handling and assembly at the micro-dimension, involving advanced methods and tools and providing a multidisciplinary, complementary approach. This was achieved by combining the research competence of R&D centres and universities, with the application oriented view from SMEs and industrial partners. The scientific and technical complementarity required by micro-handling and assembly -an intrinsically multidisciplinary topic- were ensured by merging the partners expertise in fields as design of hybrid MEMS and micro-tools, material physics and tribology, laser technology, advanced control techniques and artificial intelligence, etc.