A5002563081- Nanofabrication and Lithography Techniques
- Advancements in Photolithography Techniques
- Block Copolymer Self-Assembly
- Photonic Crystals and Applications
- Microfluidic and Capillary Electrophoresis Applications
- Advanced Surface Polishing Techniques
- Optical Coatings and Gratings
- Photonic and Optical Devices
- Plasmonic and Surface Plasmon Research
- Polymer Surface Interaction Studies
- Additive Manufacturing and 3D Printing Technologies
- Adhesion, Friction, and Surface Interactions
- Nonlinear Optical Materials Studies
- Advanced Polymer Synthesis and Characterization
- Surface Modification and Superhydrophobicity
- Antimicrobial agents and applications
- Metal and Thin Film Mechanics
- Nanomaterials and Printing Technologies
- Gold and Silver Nanoparticles Synthesis and Applications
- Machine Learning in Materials Science
- Laser Material Processing Techniques
- Advanced Sensor and Energy Harvesting Materials
- Advanced Antenna and Metasurface Technologies
- Bone Tissue Engineering Materials
- Molecular Junctions and Nanostructures
National Centre of Scientific Research "Demokritos"
2021-2024
Institut Català de Nanociència i Nanotecnologia
2010-2021
Karlsruhe Institute of Technology
2018
Consejo Superior de Investigaciones Científicas
2013
Institute of Nanotechnology
2012
University College Cork
2004-2010
Institució Catalana de Recerca i Estudis Avançats
2009-2010
Centre for Electrochemical Technologies
2010
University of Bari Aldo Moro
2010
University of Wuppertal
2004
It is demonstrated that silver nanoparticle (SNP) arrays fabricated by combining nanoimprint lithography and electrochemical deposition methods can be used as substrates for metal-enhanced fluorescence, which widely in optics, sensitive detection, bioimaging. The method presented here simple efficient at controlling the density interparticle distance within one array. Furthermore, it found fluorescence intensity tuned engineering feature size of SNP arrays. This due to different coupling...
Abstract One strategy to decrease the incidence of hospital-acquired infections is avoid survival pathogens in environment by development surfaces with antimicrobial activity. To study antibacterial behaviour active surfaces, different approaches have been developed which ISO 22916 standard. assess performance testing methodologies analyse activity hydrophobic surface patterned plastics as part a Horizon 2020 European research project. Four methods were used film, including standard,...
The low-cost, large-scale fabrication of high-density conducting-polymer nanostructures is desirable for a variety applications. We report the realization through combination nanoimprint lithography, copolymer strategy, and lift-off process. Atomic force microscopy optical measurements reveal that quality prepared structures rather good, resolution 100 nm achieved. Electrical show nanowires are conductive indicate great anisotropy in parallel perpendicular directions. Moreover, by further...
Patterned surfaces with tunable wetting properties are described. A hybrid hierarchical surface realized by combining two different materials exhibits states, depending on the speed of impingement water droplets. Both "lotus" (high contact angle and low adhesion) "petal" high states were observed same without need any modification surface. The great difference between capillary pressures exerted microstructures nanostructures was key factor that allowed us to tailor effectively adhesiveness...
Through a combination of nanoimprint lithography and block copolymer self-assembly, highly regular dewetting process symmetric diblock occurs whereby the hierarchal formation microdroplets concentric nanorings emerges. The is driven by unique chemical properties geometrical layout underlying patterned silsesquioxane micrometer-sized templates. Given presence nonpreferential substrate−polymer interactions, directed was utilized to produce uniform arrays microsized droplets microphase...
In this work, polymer nanocomposite films based on poly(L-lactic acid) (PLLA) were reinforced with mesoporous silica nanoparticles, cellular foam (MCF) and Santa Barbara amorphous-15 (SBA). PLLA is a biobased aliphatic polyester, that possesses excellent thermomechanical properties, has already been commercialized for packaging applications. The aim was to utilize nanoparticles have established as nanocarriers enhance the mechanical thermal properties of PLLA. Since introduction...
CdSe@ZnS nanocrystals are incorporated in acrylic acid or amine-functionalized PMMA copolymers (see image) to obtain fluorescent nanocomposites characterized by homogeneous NC dispersion and a significant increase emission efficiency, without modifying the excellent processability of thermoplastic polymer. Such properties permit fabrication highly luminescent nanostructures at micro- nanoscale, extending patterning resolution limit means nanoimprinting lithography.
Hypersonic, thermally activated surface acoustic waves propagating in the of crystalline silicon patterned with periodic stripes were studied by Brillouin light scattering. Two characteristic directions (normal and parallel to stripes) propagation examined exhibiting a distinctive behavior. The measured phononic band structure exhibits diverse features, such as zone folding, gap opening, hybridization local resonance for normal stripes, variety dispersive modes along stripes. Experimental...
In this study we present a flexible and adaptable fabrication method to create complex hierarchical structures over inherently hydrophobic resist materials. We have tested these surfaces for their superhydrophobic behaviour successfully verified self-cleaning properties. The followed approach allow us design produce in reproducible manner. analysed different combination of micro-nanostructures application surfaces. A static contact angle value 170° with hysteresis 4° was achieved without the...
We demonstrate optically pumped polymer band-edge lasers based on a two-dimensional photonic crystal slab fabricated by nanoimprint lithography (NIL). Lasing was obtained at the band-edge, where light exhibits low group velocity Γ point of triangular lattice band structure. The active medium composed dye chromophore-loaded matrix directly patterned in single step lithography. Plane-wave and finite difference time domain algorithms were used to predict experimental lasing frequencies...
The control of order and orientation the self-assembly cylinder-forming poly(styrene-b-dimethylsiloxane) block copolymer is demonstrated. Copolymer thin films are spun-cast onto topographically patterned (well-defined rectangular cross-section channels) polyhedral-silsesquioxane-type resist templates annealed in solvent vapor. used here fabricated by UV-curing nanoimprint lithography surface properties tuned ligands coordinated to resist's silsesquioxane cages. Depending on composition...
Nanotechnology, the manipulation of matter on atomic, molecular, and supramolecular scales, has become most appealing strategy for biomedical applications is great interest as an approach to preventing microbial risks. In this study, we utilize antimicrobial performance drug-loading ability novel nanoparticles based silicon oxide strontium-substituted hydroxyapatite develop nanocomposite films a poly(l-lactic acid) (PLLA) polymer. We also demonstrate that nanoimprint lithography (NIL),...
Abstract Optics manufacturing technology is predicted to play a major role in the future production of integrated photonic circuits. One drawbacks realization circuits damage optical materials by intense laser pulses. Here, we report on preparation series organic–inorganic hybrid photoresists that exhibit enhanced laser-induced threshold. These showed be candidates for fabrication micro-optical elements (MOEs) using three-dimensional multiphoton lithography. Moreover, they demonstrate...
A new strategy for realizing patterned surfaces with different emission colors is demonstrated. This approach relies on the gas-phase deposition of dye molecules onto solid substrates that are prepatterned by nanoimprint lithography (see figure). Only a single molecular species involved. Thus, observed color change and corresponding spectral shift in properties depends substrate used can be tuned surface engineering.
The idea of developing magnetic molecular materials into real functional electronic devices with low-cost and scalable techniques appeared the emergence field several years ago. Today, even though great advances have been done this aim, promise a device working at micro-/nanoscale room temperature has unfortunately not completely materialized yet, as their use still strongly depends on fabrication methodology robust that can be handled integrated without compromising functionality. Here we...
Directed self-assembly of block copolymer polystyrene-b-polyethylene oxide (PS-b-PEO) thin film was achieved by one-pot methodology solvent vapour assisted nanoimprint lithography (SAIL).
Hydrogel materials offer many advantages for chemical and biological sensoring due to their response a small change in environment with related volume. Several designs have been outlined the literature specific field of hydrogel-based optical sensors, reporting large number steps fabrication. In this work we present three-dimensional, sensor structure which is fabricated single step using thermal nanoimprint lithography. The based on waveguide grating readout section. A hydrogel formulation,...
The fabrication of a three-dimensional multilayered nanostructure is demonstrated with newly developed nanofabrication technique, namely, reverse contact ultraviolet nanoimprint lithography. This technique combination lithography and In this process, UV cross-linkable polymer thermoplastic are spin coated onto patterned hybrid metal-quartz stamp. These thin films then transferred from the stamp to substrate by at suitable temperature pressure. whole assembly exposed light. After separation...
We show how nanoimprint lithographic techniques are particularly suited for the realization of OLED device structures. tested them to realize nanopatterned metallic electrodes containing photonic crystals couple light out and plasmonic showing extraordinary transmission. At similar current densities, a two-fold electroluminescence is achieved with devices having double-sided structured as compared control an ITO anode. The use combined lithography processes has potential expand performance...