Mato Knez

Mato Knez
Ikerbasque, Nanogune, CTechNano, TECNUN

Prof. Dr.

About

180
Publications
35,649
Reads
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8,243
Citations
Citations since 2017
50 Research Items
3674 Citations
20172018201920202021202220230100200300400500600
20172018201920202021202220230100200300400500600
20172018201920202021202220230100200300400500600
20172018201920202021202220230100200300400500600
Additional affiliations
November 2019 - present
University of Rijeka
Position
  • Professor honoris
February 2015 - present
University of Navarra, Tecnun
Position
  • Professor
Description
  • Biomedical Engineering, Nanotechnology
July 2014 - June 2022
CTechNano s.l.
Position
  • Advisor & Consultant
Education
January 2000 - November 2003
Max Planck Institute for Solid State Research
Field of study
  • Physics, Physical Chemistry
October 1993 - January 1999
University of Ulm
Field of study
  • Chemistry

Publications

Publications (180)
Article
Full-text available
Doping is an important strategy for effectively regulating the charge carrier concentration of semiconducting materials. In this study, the electronic properties of organic-inorganic hybrid semiconducting polymers, synthesized via in situ controlled vapor phase infiltration (VPI) of poly[2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene] (PB...
Article
Full-text available
Enabling self‐healing of materials is crucially important for saving resources and energy in numerous emerging applications. While strategies for the self‐healing of polymers are advanced, mechanisms for semiconducting inorganic materials are scarce due to the lack of suitable healing agents. Here we have developed a concept for the self‐healing of...
Article
Full-text available
We present a method for producing gold nanorods surrounded by a hollow polymeric shell of polystyrenesulfonate and show that the cavities of such particles can be filled with various organic dyes. The approach consists of covering gold nanorods with silica, followed by its slow hydrolysis in an aqueous medium in the presence of the polymer thin lay...
Article
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Silicon-based polymers show great promise for various applications in biomedicine, nanotechnology, tissue targeting, and drug delivery. The use of such materials as functional coatings on surfaces requires the development of strongly adhering and flexible conformal films, which is challenging for conventional wet-chemical coating techniques. We hav...
Article
The great interest in aluminium nitride thin films has been attributed to their excellent dielectric, thermal and mechanical properties. Here we present the results of amorphous AlN films obtained by atomic layer deposition. We used trimethylaluminum and monomethylhydrazine as the precursors at a deposition temperature of 375-475 °C. The structural...
Article
Full-text available
This work describes the synthesis of highly photocatalytically active TiO2 tubes (TiTBs) by combining centrifugal spinning and atomic layer deposition (ALD). Poly(vinyl pyrrolidone) (PVP) fibers were first produced by centrifugal spinning and subsequently coated with TiO2 with various film thicknesses in a fluidized bed ALD reactor. After annealing...
Article
The flexible regulation of enzyme-like activities of nanozyme is of great importance in biomedical applications. However, the current modulation strategies usually lack activity specificity to reveal precise tuning of the desiredactivity. In this work, it is demonstrated for the first time that the Hg2+ on surfaces of Au film can be reduced in a chemic...
Article
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Because of their outstanding structural, chemical, and functional diversity, metal‐organic frameworks (MOFs) have brought about worldwide interest over the last 2 decades, which have been utilized in a wide range of applications in the fields of gas separation, storage, catalysis, and drug delivery. However, among these applications, MOFs are almos...
Article
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Plasmonic nanolasers (spasers) are of intense interest, attributable to their ability to generate a high-intensity coherent radiation. We infiltrated a three-dimensional silica-based photonic crystal (PhC) film with spasers, composed of spherical gold cores, surrounded by silica shells with dye molecules. In spasers, the gold nanospheres supported...
Article
We report on multi-step copper-free vapor phase azide-alkyne click reactions for the functionalization of metal oxide nanopowders, automated with the atomic layer deposition (ALD) technique. The synthetic approach consists of the following reaction steps: chemisorption of propiolic acid (PA) to ZrO2 from the gas phase, followed by the formation of...
Article
Here, we report on a simultaneous growth and radical-initiated cross-linking of a hybrid thin film in a layer-by-layer manner via molecular layer deposition (MLD). The cross-linked film exhibited a self-limiting...
Article
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Lithium-sulfur (Li-S) batteries are the most promising candidates for succeeding lithium ion batteries. However, they present some challenges which should be faced to increase its commercial possibilities as detrimental mechanisms during operation (e.g. shuttle effect, low capacity retention, anode corrosion, and so on) and sulfur cathode processin...
Article
In this work, omniphobic surfaces are developed by combining chemical etching and surface modification of aluminum. In the first step, a hierarchical micro/nanostructuring is carried out by chemical etching. Thereafter, a perfluoropolyether is grafted onto the corrugated aluminum substrate, decreasing its surface free energy and turning the system...
Article
Full-text available
Herein, the design, synthesis, and characterization of bifunctional hybrid nanoreactors used for concurrent one‐pot chemoenzymatic reactions are shown. In the design, the enzyme, glucose oxidase, is wrapped with a peroxidase‐mimetic catalytic polymer. Hemin, the organic catalyst, is linked to the flexible polymeric scaffold through coordination to...
Article
In this work we report the first ring opening vapor to solid polymerization of cyclotrisiloxane and N-methyl- aza-2,2,4-trimethylsilacyclopentane by molecular layer deposition (MLD). This process was studied in-situ with a...
Article
Full-text available
The high capacity of sulfur makes lithium–sulfur (Li–S) batteries the most promising next‐generation battery systems. With a significantly higher theoretical specific energy than conventional lithium‐ion batteries, this technology is intensely investigated. However, currently used cathodes have some critical drawbacks which affect the performance o...
Article
Full-text available
Materials science is nowadays facing challenges in optimizing properties of materials which are needed for numerous technological applications and include, but are not limited to, mechanics, electronics, optics, etc. The key issue is that for emerging applications materials are needed which incorporate certain properties from polymers or biopolymer...
Article
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The physical properties of polymers can be significantly altered by blending them with inorganic components. This can be done during the polymerization process, but also by post-processing of already shaped materials, for example through coating by atomic layer deposition (ALD) or hybridizing through vapor phase infiltration (VPI), both of which ar...
Article
This study describes a straightforward preparation of organic-inorganic thin films containing a stable "sandwich"-like structure of two atomic layer deposited (ALD) ZnO layers separated by a thin organosilane phase, which is built from a single organic component (3-mercaptopropyl)trimethoxysilane (MPTMS). Grafting of MPTMS on the first ALD ZnO laye...
Article
The present work shows a surface-induced preparation of sub-100 nm organosilica nanohemispheres on atomic layer deposited (ALD) Al2O3 thin films, which was achieved by cooperative condensation/hydrolysis and thiol-ene click chemical reactions. The two-step synthetic approach consists of an initial silanization of the Al2O3 film with vinyltrimethoxy...
Article
Full-text available
The absence of a universal enzyme immobilization method that fulfils the needs of each biocatalytic system has boosted the development of new approaches to the fabrication of heterogeneous biocatalysts. Herein, we present a protocol for the synthesis of a novel sort of catalytically responsive hybrid biomaterials, named metal-organic enzyme aggrega...
Article
We report for the first time on a pulsed vapor phase copper-free azide-alkyne click reaction on ZnO by using the atomic layer deposition (ALD) process technology. The reproducible and fast...
Article
Constructing nanotubular morphologies and heterojunctions are two effective strategies to enhance the charge separation and transport of α-Fe 2 O 3 for improved photocatalytic performance, while the fabrication of porous α-Fe 2 O 3 nanotubes with precisely tailored wall thickness, pore structure, crystallinity, and junctions still remains a big cha...
Article
Full-text available
Atomic layer deposition is a chemical deposition technology that provides ultimate control over the conformality of films and their thickness, even down to Ångström-scale precision. Based on the marked superficial character and gas phase process of the technique, metal sources and their ligands shall ideally be highly volatile. However, in numerous...
Article
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A combination of atomic layer deposition and photolithography is applied to fabricate interdigitated electrodes of aluminum‐doped zinc oxide embedded in polyethylene terephthalate substrates. Various designs with different gap to widths ratios are realized and important characteristics of the electrodes, including thickness, surface roughness, and...
Article
Full-text available
Here, a platform for the development of highly responsive organic–inorganic enzyme hybrids is provided. The approach entails a first step of protein engineering, in which individual enzymes are armored with a porous nanogel decorated with imidazole motifs. In a second step, by mimicking the biomineralization mechanism, the assembly of the imidazole...
Article
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We developed a one-transistor one-resistor cell composed of one TiO2-based resistive switching (RS) device and one ZnO-based thin-film transistor (TFT). We study the electric characteristics of each component individually, and their interplay when both work together. We explored the direct control of bipolar RS devices, using our TFTs to drive curr...
Article
Biomineralization is a natural concept to alter the mechanical properties of soft matter. Mimicking this concept became desirable with a resulting great variety of approaches toward realizing functional hybrid materials. Vapor-phase infiltration (VPI), a solvent-free approach, is complementary to solution-based processes and often provides hybrid m...
Article
Sustainable electricity generation is one of the major current challenges for our society. In this context, the evolution of nanomaterials and nanotechnologies has enabled the fabrication of microscopic devices to produce clean energy from a great variety of renewable sources. To expand the possibilities of energy generation, we have designed and f...
Chapter
Full-text available
The MARINA project was funded by the European Union’s Horizon 2020 Research and Innovation Programme with the aim to create an all-inclusive Knowledge Sharing Platform for catalysing and federating the convergence of already existing networks, communities, online platforms and services by addressing marine research issues and topics according to Re...
Article
Polyaramides, such as Kevlar, are of great technological importance for their extraordinary mechanical performance. As fibers, they are used in personal safety, for reinforcement of tires and ropes, and in further material composites that require extreme mechanical stability. However, the properties of the polymer depend on the environmental condit...
Article
In the present work, perfluoroalkylated laponite nanoparticles with a high degree of functionalization (60 wt%) have been prepared and a methodology to prepare transparent, antistatic and omniphobic laponite-based films with holistic self-cleaning properties against liquids, solids and liquid-solid mixtures has been developed. The intrinsic electri...
Article
This paper describes a novel fabrication technique for microelectromechanical systems (MEMS) based on the agglomeration of micron-sized powder into rigid 3-D porous structures by means of atomic layer deposition (ALD). Since ALD is performed at low temperatures, such structures can be created from a broad variety of materials. It is shown that the...
Article
Full-text available
Organic–inorganic hybrid materials are of great demand not at least for their enormous application potential in flexible devices. Atomic or molecular layer deposition (ALD or MLD) and vapor phase infiltration (VPI) offer novel pathways for the fabrication of such hybrids, but a clear understanding of the chemistry between the vaporized precursors a...
Article
The oxygen reduction reaction (ORR) is essential in research pertaining to life science and energy. In applications, platinum-based catalysts give ideal reactivity, but, in practice, are often subject to high costs and poor stability. Some cost-efficient transition metal oxides have exhibited excellent ORR reactivity, but the stability and durabili...
Article
Full-text available
Efficient doping of organic semiconductors is an important prerequisite for the fabrication of high performance organic electronic devices. In this work, we describe a novel single precursor low-temperature (70 °C) vapor phase infiltration (VPI) process to dope poly(3-hexyl)thiophene (P3HT). The infiltration is performed with the metal containing a...
Article
Full-text available
This work describes a novel single precursor vapor phase infiltration (VPI) process to dope polyaniline (PANI). The infiltration is performed with the metal containing atomic layer deposition precursors MoCl5 or SnCl4. The conductivities are assessed with four-point probe measurements and show significant enhancements by up to 6 orders of magnitude...
Article
The ability to produce or alter materials to obtain drastically different or improved properties has been the driving goal of materials science since its inception. Combining multiple elements, compounds , or materials while maintaining the beneficial aspects of each constituent is a complex problem often involving highly inter-disciplinary researc...
Conference Paper
X-ray microscopy enables high spatial resolutions, high penetration depths and characterization of a broad range of materials. Calculations show that nanometer range resolution is achievable in the hard X-ray regime by using Fresnel zone plates (FZPs) if certain conditions are satisfied. However, this requires, among other things, aspect ratios of...
Article
Graphene is an attractive material for its physicochemical properties, but for many applications only chemically synthesized forms such as graphene oxide (GO) and reduced graphene oxide (rGO) can be produced in sufficient amounts. If considered as electrode material, the intrinsic defects of GO or rGO may have negative influence on the conductivity...
Article
Full-text available
Reflective surfaces are one of the key elements of solar plants to concentrate energy in the receivers of solar thermal electricity plants. Polymeric substrates are being considered as an alternative to the widely used glass mirrors due to their intrinsic and processing advantages, but optimizing both the reflectance and the physical stability of p...
Article
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div class="title">Multilayer Fresnel Zone Plates for X-ray Microscopy - Volume 21 Issue S3 - Umut T. Sanli, Kahraman Keskinbora, Corinne Grevent, Adriana Szeghalmi, Mato Knez, Gisela Schiitz
Article
Dear participants of EuroCVD20,with pleasure we address you some words about the present conference proceedings of EuroCVD20.We faced a big challenge organizing a conference to which the full paper peer reviewed contributions will be available already with the launch of the conference!Clearly, the advantage of this procedure is the highest quality...
Article
Full-text available
Nuclear translocation of human H-chain in its intact cage-like structure without any additional modifications enables a rapid nuclear delivery of an encapsulated anticancer drug (doxorubicin). This reduces the doses of drugs simultaneously bypassing the cellular multidrug resistance. Apoferritin exhibits synergistic effects through attenuating drug...
Conference Paper
Specially designed hybrid materials can be used as a model system to compare its properties and structural design principles with those of biological materials such as bone. We aim to develop new combinations of multi scale analytic tools, to investigate the correlation between macroscopic material mechanics and microscopic structure of bioinspired...
Article
Full-text available
Systems allowing label-free molecular detection are expected to have enormous impact on biochemical sciences. Research focuses on materials and technologies based on exploiting localized surface plasmon resonances in metallic nanostructures. The reason for this focused attention is their suitability for single-molecule sensing, arising from intrins...
Article
The infiltration of transition metals into biopolymers by means of vapor-phase processes has been shown to unusually change the bulk mechanical properties of those materials. Here, for the first time, a novel, single precursor infiltration process was applied to cellulose. The mechanical properties, as measured through uniaxial tensile testing, sho...
Article
Full-text available
The first specific functionality of the light-chain (L-chain) subunit of the universal iron storage protein ferritin was identified. The electrons released during iron-oxidation were transported across the ferritin cage specifically through the L-chains and the inverted electron transport through the L-chains accelerated also the demineralization o...
Article
Natural materials consisting of protein structures impregnated with a tiny amount of metals often exhibit impressive mechanical behavior, which represents a new design paradigm for the development of biomimetic materials. Here, we produced Al-infiltrated silks by applying a modified Al2O3 atomic layer deposition (ALD) process to the dragline silk o...
Article
Full-text available
X-ray microscopy is a successful technique with applications in several key fields. Fresnel zone plates (FZPs) have been the optical elements driving its success, especially in the soft X-ray range. However, focusing of hard X-rays via FZPs remains a challenge. It is demonstrated here, that two multilayer type FZPs, delivered from the same multilay...