A5103131411- Surface Modification and Superhydrophobicity
- Advanced Cellulose Research Studies
- Optical Coatings and Gratings
- Advanced Materials and Mechanics
- Photonic and Optical Devices
- Electrospun Nanofibers in Biomedical Applications
- Adhesion, Friction, and Surface Interactions
- Plasma Diagnostics and Applications
- Electrohydrodynamics and Fluid Dynamics
- Bacteriophages and microbial interactions
- CO2 Reduction Techniques and Catalysts
- Carbon Nanotubes in Composites
- Advanced Antenna and Metasurface Technologies
- Liquid Crystal Research Advancements
- Metal-Catalyzed Oxygenation Mechanisms
- Metamaterials and Metasurfaces Applications
- Photonic Crystals and Applications
- Polymer composites and self-healing
- Plasmonic and Surface Plasmon Research
- Thermal Radiation and Cooling Technologies
- Crystal Structures and Properties
- Nanomaterials and Printing Technologies
- Advanced battery technologies research
- Supercapacitor Materials and Fabrication
- Silicon Nanostructures and Photoluminescence
Swiss Federal Laboratories for Materials Science and Technology
2020-2022
ETH Zurich
2022
École Polytechnique Fédérale de Lausanne
2018
Technische Universität Ilmenau
2014-2018
Robert Bosch (Germany)
2013
Leibniz University Hannover
2003
University of Stuttgart
1992-2002
Darmstadt University of Applied Sciences
1997
University of Basel
1974
Biomimetic, lamellar, and highly porous transition-metal carbide (MXene) embedded cellulose nanofiber (CNF) aerogels are assembled by a facile bidirectional freeze-drying approach. The biopolymer have large-scale, parallel-oriented micrometer-sized pores show excellent mechanical strength flexibility, tunable electrical properties, low densities (2.7–20 mg/cm3). CNF, MXene, lamellar efficiently utilized to endow the with exceptionally high birefringence in terahertz (THz) regime....
Abstract In part I of this paper (1) we give evidence that the P23‐capsoid τ‐particles is transformed in situ into P23*‐capsid normal phage. Using polymorphism phage T4, have chosen polyheads as representative P23 assemblies and giant phages P23* order to study their surface crystals by optical filtration micrographs. We found for a lattice constant 112 Å with typical hexameric, ringlike capsomer giants 124 quite different morphology, type (6+1). From stoichiometry proteins composing capsid...
Abstract 3D printing technologies allow control over the alignment of building blocks in synthetic materials, but compositional changes often require complex multimaterial steps. Here, printable materials showing locally tunable mechanical properties are produced a single step Direct Ink Writing. These new inks consist polymer matrix bearing biocompatible photoreactive cinnamate derivatives and up to 30 wt% anisotropic cellulose nanocrystals. The printed mechanically versatile can undergo...
Conventional manufacturing techniques allow the production of photoresponsive cellulose nanocrystals (CNC)-based composites that can reversibly modify their optical, mechanical, or chemical properties upon light irradiation. However, such materials are often limited to 2D films simple shapes and do not benefit from spatial tailoring mechanical resulting CNC alignment. Herein, we propose direct ink writing (DIW) 3D complex structures combine reinforcement effects with photoinduced responses....
Photoresponsive soft liquid crystalline elastomers (LCEs) transform light's energy into dynamic shape changes and are considered promising candidates for production of robotic or muscle-like devices. 3D printing allows access to elaborated geometries as well control the photoactuated movements; however, this development is still in its infancy only a limited choice LCE yet available. Herein, we propose introduce biocompatible sustainable cellulose nanocrystals (CNC) an order facilitate...
A highly emissive Si-based microhotplate based on self-organizing nanostructures is presented. The silicon was structured by a self-masking deep reactive ion etching process resulting in needle-like non-periodical microstructures. Evaporated platinum settles kind of glancing angle deposition as well-defined nanocrystals the Finite-difference time-domain simulation allowed evaluation ideal thickness for maximized infrared absorption and emission. We measured hemispherical spectral...
Nanofiber membranes (NFMs) coated with noble metals are intensively researched for various applications such as wearable electronics, environmental sensors, and point of care diagnostics. To achieve the desired functionality while minimizing costs, a combination facile coating methods accurate microstructural designs is required, but remains elusive. Herein, novel conductive porous designed based on scalable approach to fabricating conformally gold layers electrospun PVDF fibers...
Diffusion barrier coatings were developed to suppress the high sensitivity moisture of enzymatically pre-treated and carboxymethylated cellulose nanofibrils (CNF) substrates. The based on UV curable organic/inorganic hybrids with epoxy tetraethylorthosilicate (TEOS) precursors additional vapor formed SiNx layers. Pure enabled a two-fold decrease water transmission rate (WVTR) CNF improved its transparency, however it did not properly wet surfaces interfacial adhesion was low. In contrast...
Bio-inspired fluorine-free and self-cleaning polymer coatings were developed using a combination of self-assembly UV-printing processes. Nasturtium lotus leaves selected as natural template surfaces. A UV-curable acrylate oligomer three acrylated siloxane comonomers with different molecular weights used. The spontaneous migration the towards polymer–air interface was found to be faster for higher weight, enabled create hydrophobic surfaces water contact angle (WCA) 105°. replication fidelity...
This paper describes a concept for passive microfluidic time-temperature indicator (TTI) intended intelligent food packaging. A system is presented that makes use of the temperature-dependent flow suitable ingredients in microcapillary. Based on creeping distance inside capillary, integral can be determined. demonstrator microsystem has been designed, fabricated and characterised using liquid sugar alcohols as fluids. To enable first wireless read-out TTI, sensor was read out commercial RFID...
Microelectronic devices consist of a number corrosion sensitive metallic combinations such as gold–aluminium and zinc coated steel. Polyamides (PAs) are well known packaging materials for microelectronic integrated circuits. Iodide based stabilisers used in PA, degassing the iodine from can introduce significant problems on microcircuit assembly. The investigations this paper focus effect containing PA steel parts gel protected wire bond connections, elucidation mechanisms.
The in-line characterization of freeform optical elements during the production cycle is challenging. Recently, we presented a compact sensor setup for wavefront generated by in transmission. based on common-path interferometer consisting diffractive components and Fourier filtering being adapted to subsequent numerical post processing. Additionally, it offers several degrees freedom enlarging measurement range gradients. In this contribution, propose an advanced wavefronts reflection. main...
The process flow to integrate metallic nanostructures in surface micromachining processes is presented. are generated by evaporation of microstructured silicon grass with metal. based on the lift-off a thin amorphous layer deposited using CVD process. All steps feature low temperature load beneath 120 °C and high compatibility many materials as only well-established chemicals used. As result usable for optical applications can be part multilayered microsystems fabricated micromachining.
A microfabricated gas ionization sensor with integrated field enhancing silicon- palladium nanostructures is presented. The can be used to determine the ambient by its specific breakdown voltage. Technological details of fabrication and assembly are presented too.
Crystal structure of manganese gallium germanium silicon oxide (garnet type), Mn3(Ga2