A5055532345- Surface Modification and Superhydrophobicity
- Advanced Sensor and Energy Harvesting Materials
- Icing and De-icing Technologies
- Characterization and Applications of Magnetic Nanoparticles
- Advanced Materials and Mechanics
- Magnetic Properties and Synthesis of Ferrites
- Polymer composites and self-healing
- Nanoporous metals and alloys
- Lignin and Wood Chemistry
- nanoparticles nucleation surface interactions
- Block Copolymer Self-Assembly
- Diamond and Carbon-based Materials Research
- Winter Sports Injuries and Performance
- Iron oxide chemistry and applications
- Magnetic properties of thin films
- Anodic Oxide Films and Nanostructures
- Metal and Thin Film Mechanics
- Ion-surface interactions and analysis
- Advanced Cellulose Research Studies
- Nanocomposite Films for Food Packaging
- Micro and Nano Robotics
- Adhesion, Friction, and Surface Interactions
- Plasma Applications and Diagnostics
Norwegian University of Science and Technology
2018-2024
Trondheim Kommune
2018-2019
Current synthetic elastomers suffer from the well-known trade-off between toughness and stiffness. By a combination of multiscale experiments atomistic simulations, transparent unfilled elastomer with simultaneously enhanced stiffness is demonstrated. The designed comprises homogeneous networks ultrastrong, reversible, sacrificial octuple hydrogen bonding (HB), which evenly distribute stress to each polymer chain during loading, thus enhancing stretchability delaying fracture. Strong HBs...
Ice accretion presents a severe risk for human safety. Although great efforts have been made developing icephobic surfaces (the surface with an ice adhesion strength below 100 kPa), expanding the lifetime of state-of-the-art still remains critical unsolved issue. Herein, novel material is designed by integrating interpenetrating polymer network (IPN) into autonomous self-healing elastomer, which applied in anti-icing enhancing mechanical durability. The molecular structure, morphology,...
Despite the remarkable advances in mitigating ice formation and accretion, however, no engineered anti-icing surfaces today can durably prevent frost formation, droplet freezing, accretion an economical ecofriendly way. Herein, sustainable low-cost electrolyte hydrogel (EH) are developed by infusing salted water into a matrix for avoiding icing. The EH both ice/frost extremely long time reduce adhesion strength to ultralow value (Pa-level) at tunable temperature window down -48.4 °C....
Delaying ice and frost formation is one of the key strategies to mitigate hazards induced by accretion. The current surfaces for delaying rely on restricting heterogeneous nucleation, which fails in practical application because dust impurities from environment can serve as undesired nucleation sites and, thus, promote nucleation. Herein, ionogel are prepared not only inhibit but also control growth. At −20 °C, surface enables an unconventional inward growth water droplet–air interface,...
Excessive ice accretion on infrastructures can lead to severe damage and dysfunction. In the context of combating build-up unwanted icing at same time maintaining sunlight transmission, for instance solar panels, windows sensors, mechanically durable transparent icephobic coatings are highly desired. Herein, we design fabricate an coating possessing first combined properties ultrafast self-healing outperforming transparency. Our restore more than 80 % ultimate tensile strength within 45 min...
Slide-ring crosslinked polydimethylsiloxane (PDMS) is designed and prepared for anti-icing/deicing applications. Compared with the covalent crosslinks, slidable crosslinks enhance mobility of polymer networks endow materials low elastic modulus. The PDMS matrix guarantees hydrophobicity as-prepared coatings. These properties synergistically lead to ultra-low ice adhesion strength (13.0 ± 1.3 kPa) excellent mechanical durability. on coating maintains a value ∼12 kPa during 20 icing/deicing...
Abstract Label-free detection of nucleic acids such as microRNAs holds great potential for early diagnostics various types cancers. Measuring intrinsic biomolecular charge using methods based on field effect has been a promising way to accomplish label-free detection. However, the charges biomolecules are screened by counter ions in solutions over short distance (Debye length), thereby limiting sensitivity these methods. Here, we measure magnetic noise paramagnetic ions, Mn 2+ , interacting...
Ice accretion is a severe challenge for both production and livelihood in cold regions. Previously reported high-performance icephobic surfaces by infusing lubricants are either temporarily icephobic, chemically unstable, or mechanically weak. Herein, we report the design fabrication of submicrometer porous polydimethylsiloxane (PDMS; Sylgard 184 with weight ratio 10:1) foam based stable robust materials. The relationship between ice adhesion strength porosity revealed. Without any surface...
Abstract Enabling surfaces with passive anti-icing properties is an emerging, facile, economical, and energy-saving strategy to mitigate the harm caused by ice accretion. However, combination of icephobicity robustness remains a daunting challenge. Herein, we present ultra-robust transparent icephobic coating high toughness, strong substrate adhesion, self-healing capability. Hydrophobicity, smoothness, softness guarantee low adhesion strength. By incorporating spongy structure, strength...
The limited durability of slippery lubricant-infused porous surfaces (SLIPS) restricts their practical applications. Inspired by the epidermal glands skins, we developed a facile approach to durable SLIPS with gland-like storage and release functions for icephobicity. By introducing hybrid surfactant as lubricant into polydimethylsiloxane (PDMS) matrix, capsules were formed mono-dispersed in working structures lubricant. obtained showed low ice adhesion strength thermal simultaneously. In...
Abstract Artificial materials from the self‐assembly of magnetic nanoparticles exhibit extraordinary collective properties; however, to date, contribution nanoscale magnetism mechanical properties this class is overlooked. Here, through a combination Monte Carlo simulations and experimental measurements, shown be important in self‐assembled superstructures magnetite nanocubes. By simulating relaxation interacting macrospins superstructure systems, relationship between magnetism, nanoparticle...
Focused ion beam milling of self-assembled magnetic superstructures is demonstrated as a novel approach to fabricate porous materials with tunable porosity. During exposure the beam, nanoparticles in superstructure are subjected combined and melting, thus merging together into network.
Abstract Enhancement of mechanical properties in self‐assembled superstructures magnetic nanoparticles is a new emerging aspect their remarkable collective behavior. However, how interactions modulate is, to date, not fully understood. Through comprehensive Monte Carlo investigation, this study demonstrates the nanocubes can be controlled intrinsically by nanoparticle magnetocrystalline anisotropy (MA), as well superstructure shape anisotropy, without any need for changes structural design...
Correction for ‘Focused ion beam milling of self-assembled magnetic superstructures: an approach to fabricate nanoporous materials with tunable porosity’ by Verner Håkonsen <italic>et al.</italic>, <italic>Mater. Horiz.</italic>, 2018, <bold>5</bold>, 1211–1218.