Marco SalernoUniversità degli Studi di Genova | UNIGE · Department of Physics
Marco Salerno
PhD
learning about optical nanoscopy
About
242
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Introduction
I am a physicist with 30 years of experience in AFM and related techniques. I'm also experienced in nanotechnology manufacturing via UV, electron beam, and soft lithography. In the past decade, my interest in surface patterning shifted to natural lithographic paradigms aiming at larger areas. I have been working on anodic porous alumina as well as dental restorative nanocomposites and implant materials. Recently, I joined the optical nanoscopy group of Prof. Diaspro.
Additional affiliations
February 2017 - October 2017
Publications
Publications (242)
Citation: Abiedh, K.; Salerno, M.; Hassen, F.; Zaaboub, Z. Single CsPbBr 3 Perovskite Microcrystals: From Microcubes to Microrods with Improved Crystallinity and Green Emission. Materials 2024, 17, 4043. Abstract: All-inorganic perovskite materials are promising in optoelectronics, but their morphology is a key parameter for achieving high device e...
All-inorganic perovskite materials are promising in optoelectronics but their morphology is a key parameter for achieving high device efficiency. We prepared CsPbBr3 perovskite microcrystals with different shape, grown directly on planar substrate by conventional drop casting. We observed the formation of CsPbBr3 microcubes on bare indium tin oxide...
Highly efficient removal of tetracycline antibiotic residue from aqueous solution was demonstrated by a novel, cost effective and environmentally friendly adsorbent consisting in composite polymeric beads of sodium alginate, chitosan and polyvinyl pyrrolidone, doped with equal ratio of sulfonated graphene oxide and sulfonated titania, fabricated vi...
As is known, carbon nanotubes favor cell growth in vitro, although the underlying mechanisms are not yet fully elucidated. In this study, we explore the hypothesis that electrostatic fields generated at the interface between nonexcitable cells and appropriate scaffold might favor cell growth by tuning their membrane potential. We focused on primary...
A simple, reagentless, eco-friendly and economically viable method to produce metal micro and nanoparticles (NPs) by means of two different wet milling schemes is proposed. With this technique, metal spheroids of millimetric sizes are subject to a tribological disaggregation in liquid phase, with formation of a nanosized solid whose aggregation is...
Herein, we report, for the first time, the reduction reaction kinetics of ciprofloxacin organic molecules based on structural and micromorphological conditions of an electrocatalytic system of Bi0.5Na0.5Ba(TiO3)2 (BNT-BT) thin films. XRD analysis showed the coexistence of rhombohedral and tetragonal structures for the BNT-BT thin films annealed at...
The following supporting information can be downloaded at: https://www.mdpi.com/article/10.3390/ma16030993/s1, Figure S1 is FDTD simulation of two-level 3Dcolumn-like nanofilms ZY view by Lumerical Inc. software ver. 8.24.2502. Figure S2 is FDTDsimulated transmittance and reflectance spectra as a function of wavelength for the two-level 3Dcolumn-li...
Breast cancer cell colonization of the lungs is associated with a dismal prognosis as the distributed nature of the disease and poor permeability of the metastatic foci challenge the therapeutic efficacy of small molecules, antibodies, and nanomedicines. Taking advantage of the unique physiology of the pulmonary circulation, here, micro‐combinatori...
Reanodizing metal underlayers through porous anodic alumina has already been used extensively to fabricate ordered columns of different metal oxides. Here, we present similar 3D multilayered nanostructures with unprecedented complexity. Two-level 3D column-like nanofilms have been synthesized by anodizing an Al/Nb metal layer in aqueous oxalic acid...
The ongoing problems in western countries connected to the global energy supply urgently force the research community to strive in finding new methodologies for boosting the functional properties of earth‐abundant raw materials, for example, the largely available cupreous oxide. In this work, the authors focus on the surface sensitization of this m...
Over the last few years it has been understood that the interface between living cells and the underlying materials can be a powerful tool to manipulate cell functions. In this study, we explore the hypothesis that the electrical cell/material interface can regulate the differentiation of cancer stem-like cells (CSCs). Electrospun polymer fibres, e...
Poly(3-hydroxybutyrate) (PHB)-based films containing Poly(ethylene glycol) (PEG), es-terified sodium alginate (ALG-e) and polymeric additives loaded with Ag nanoparticles (AgNPs) were obtained by a conventional casting method. AgNPs were produced in aqueous suspension and added to polymeric gels using a phase exchange technique. Composite formation...
Iron niobates, pure and substituted with copper (Fe1−xCuxNbO4 with x = 0-0.15), were prepared by the solid-state method and characterized by X-ray diffraction, Raman spectroscopy, and magnetic measurements. The results of the structural characterizations revealed the high solubility of Cu ions in the structure and better structural stability compar...
Molecularly imprinted membrane of β-caryophyllene (MIM–vCP) was fabricated incorporating β-caryophyllene molecularly imprinted polymer nanoparticles (βCP–NP) into polycaprolactone (PCL) fibers via electrospinning. The βCP–NP were synthesized by precipitation polymerization using the βCP as a template molecule and acrylic acid as a functional monome...
A mechanosynthesis process aiming at producing stable particles dispersions embedded in a liquid phase is proposed, starting from spheres of a metal precursor subject to a progressive disaggregation carried out by a tribological process. The method consists in using a precursor in metal spheres of millimetric dimensions, placed in a suitable vessel...
The development and efficient production of effective bioplastics is a hot topic, required to face up to the issue of the difficult disposal of plastics derived from oil. Among the different natural sources of bioplastics, starch is one of the most promising. However, for most applications, the proper mastering of the surface properties of bioplast...
The optimization of the triboelectric layer is of paramount importance for the improvement of the performance of triboelectric nanogenerators (TENGs). In this work, we present an innovative approach exploiting the addition of highly electronegative fluorine-doped graphene (F-Gr) flakes into a polydimethylsiloxane (PDMS) polymeric matrix acting as t...
Effective and efficient removal of both heavy metal pollutants and bacterial contamination from fresh water is an open issue, especially in developing countries. In this work, a novel eco-friendly functional composite for water treatment application was investigated. The composite consisted of electrospun nanofiber membrane from blended polyvinyl a...
In article number 2101807, Roman Krahne and co‐workers introduce a simple and low‐cost fabrication method to grow metal halide perovskite microcrystals directly on functional substrates. The microcrystals feature a pyramidal cavity on their top surface that provides advantageous optoelectronic properties, since its facets lead to enhanced light emi...
We fabricated resin composites based on a standard matrix system used for dental restorations incorporating a novel concept microsized filler with passing-through nanopores. The fillers were obtained from anodic porous alumina (APA), after separation from the supporting aluminum substrate and ball milling. Bending tests were carried out on as-cured...
Halide perovskite (HP) nanocrystals (NCs) are promising materials for application in optoelectronic devices. Smooth and compact films, which are obtained by spin coating HP NCs, are required for high-efficiency devices. Whereas solvent plays an important role in spin-coating NCs, there are only few reports on the effect of dispersing solvents of HP...
The current trend in nanoparticles (NPs) synthesis consists in addressing a multiobjective optimization, whose targets are maximization of product yield together with minimization of energy waste and risk factors related...
Magnetron-sputtered thin films of titanium and zirconium, with a thickness of 150 nm, were hydrogenated at atmospheric pressure and a temperature of 703 K, then anodized in boric, oxalic, and tartaric acid aqueous solutions, in potentiostatic, galvanostatic, potentiodynamic, and combined modes. A study of the thickness distribution of the elements...
All‐inorganic metal halide perovskites are highly attractive materials for optoelectronics and are typically implemented as thin films, nanocrystals, and single crystals with macroscopic and millimeter‐size dimensions. Single crystals with regular shapes in the micrometer range are less explored and present an interesting alternative when a well‐de...
A green and sustainable process is proposed for the synthesis of metal nanoparticles (NPs) by means of a solid disaggregation in a liquid phase. A solid metal substrate, embedded in a solution containing suitable capping agents and surfactants, undergoes comminution carried out by a rotating shaft of hardness greater than the one typical of the ero...
A polymer composite based on an innovative filler consisting of microscale powder of nanoporous alumina is modeled. The passing-through nanoscale pores in this system—roughly columnar cylindrical, with diameter of the order of 100 nm—are fully penetrated by the resin, which is not bonded to the inner pore walls by any chemical agent. This system, p...
Lapping and polishing are industrial processes sometimes used alternatively for surface finishing of hard and brittle materials. This article presents advanced image analysis of surfaces of quartz crystal blanks finished by lapping and polishing. Scanning electron micrographs were obtained from workpiece surfaces parallel to Y‐, AT‐, and Z‐cut crys...
Nanoparticles of zerovalent Gallium have been produced by surface disaggregation carried out by means of mechanical abrasion in aqueous phase where capping agents have been dissolved. The particles have been characterized in diameter by dynamic light scattering. At a constant grinding force acting on metal surface, it has been observed that the dim...
This paper deals with the interfacial adhesion properties of Ti-6Al-4V alloy substrates, prepared by using different treatment protocols selected on the basis of their different effectiveness, and bonded using a structural, high-strength epoxy adhesive. The alternative pre-bonding treatments were sodium hydroxide anodization and low-pressure-plasma...
The wide interest in developing green energy technologies stimulates the scientific community to seek, for devices, new substitute material platforms with a low environmental impact, ease of production and processing and long-term stability. The synthesis of metal oxide (MO) semiconductors fulfils these requirements and efforts are addressed toward...
The volumetric growth, composition, and morphology of porous alumina films fabricated
by reduced temperature 280 K galvanostatic anodizing of aluminum foil in 0.4, 1.0, and 2.0 M aqueous
sulfuric acid with 0.5–10 mA·cm−2
current densities were investigated. It appeared that an increase
in the solution concentration from 0.4 to 2 M has no significan...
Supplementary Materials: The following are available online at https://www.mdpi.com/1996-1
944/14/4/767/s1: Figures S1–S27: X-ray diffraction analysis results of the porous alumina films
obtained at 1.5, 2.0, 4.05, 4.25, 4.5, 6.1, 5.0, 8.0, 8.7 mA·cm−2
current densities and 0.4, 1.0, 2.0 M SA
solution concentrations.
All-inorganic lead halide perovskite nanocrystals exhibit excellent optical properties, which make them promising for optoelectronic devices. However, the insulating organic ligands at the nanocrystals’ surface represent a major issue in their effective application in devices. To decrease the effect of the ligands on carrier transport in perovskite...
Highly-oriented pyrolytic graphite (HOPG), i.e., the 3D stack of sp²-hybridized carbon sheets, is an attractive material thanks to its high electrical conductivity, chemical inertness, thermal stability, atomic-scale flatness, and ease of exfoliation. Despite an apparently ideal and uniform material, freshly cleaved HOPG shows domains in Kelvin pro...
Commercialization of lead halide perovskite-based devices is hindered by their instability towards environmental conditions. In particular, water promotes fast decomposition, leading to a drastic decrease in device performance. Integrating water-splitting active species within ancillary layers to the perovskite absorber might be a solution to this,...
We considered Class II dental cavities in critical tooth areas concerned with vital pulp therapy, and evaluated the marginal gap after treatment with Biodentine and Geristore, and one composite after either etching and adhesive (V2) and after use of a self-etching system (iBond Universal). We measured the surface morphology at the marginal gap by o...
PurposeThe morphological stability of silicon single crystal wafers was investigated, after performing cleaning surface treatments based on moderate temperature annealing and plasma sputtering.Methods
The wafer surfaces were measured by Tapping mode atomic force microscopy in air, before and after the different treatments. The 3D images were segmen...
We fabricated nanoparticles of Zn ferrite of the chemical formula ZnFe2O4 using the auto-combustion technique, and investigated their magnetic spin distribution and frequency response to optical excitation. Optical absorption and magnetic characterization of the nanoparticles were carried out in the UV-Vis and IR range, and extended on the low freq...
A synthesis of carbon nanoparticles from hydrothermal dissociation of sugars of different composition is proposed in the present experimental study. The process has been carried out in a stirred batch reactor at a fixed temperature, using precursors dissolved in aqueous solvent in the presence of NaOH. The use of surface passivation agents has been...
Light-emitting diodes (LEDs) based on lead halide perovskite (LHP) nanocrystals (NCs) have received plenty of attention in the latest years, owing to their excellent color purity and easily tunable emission color. However, the efficiency of LHP NC-based LEDs generally lags behind that of polycrystalline LHP thin-film-based LEDs, especially for blue...
Fabricating biodegradable and insoluble nanoscale structures
Reducing plastic pollution is a critical challenge in photonics. Here, pure cellulose and derivatives from agro-waste were used to produce high-quality photonic architectures at the micro- and nanoscales. We demonstrate their use for dielectric and plasmonic colors and surface-enhanced Raman spectroscopy.
We observed exceptionally large pores (1-2 μm diameter) on aluminum electrochemically treated at relatively low voltage bias (50 V) under cathodic polarization. The pore spacing and size did not correlate with the proportionality law of nanoporous aluminum oxide, and appeared at least one order of magnitude higher. We did no inquire the mechanism o...
We fabricated by solid-state ceramic technique single-phase mixed spinel ZnxMg0.3-xCu0.7Al0.3Fe1.7O4 with x index from 0.05 to 0.25, step 0.05 for the first time. The goal was to study the effect of cation doping on internal structure and magnetic properties of the material. The ferrites were first characterized by X-ray diffraction to confirm thei...
The replacement of plastic with eco-friendly and biodegradable materials is one of the most stringent environmental challenges. In this respect, cellulose outstands as a biodegradable polymer. However, a significant challenge is to obtain biodegradable materials for high-end photonics that are robust in humid environments. Here, we demonstrate the...
Lead halide perovskite-based photoactive layers are nowadays employed for a large number of optoelectronic applications, from solar cells to photodetectors and light-emitting diodes, because of their excellent absorption, emission and charge-transport properties. Unfortunately, their commercialization is still hindered by an intrinsic instability t...
We investigated the doping of the spinel structure Mn-Cr ferrite with cations of the rare-earth Ce. The material was characterized by X-ray diffraction, Raman spectroscopy, high-resolution transmission electron microscopy and saturation magnetization. The magneto-impedance showed a step-like drop in impedance that ranges from 10% to 45% at the high...
The presence of pharmaceutical residues in aquatic environments represents a risk for the equilibrium of the ecosystem and may seriously affect human safety itself in the long term. To address this issue, we have synthesized functional materials based on highly-reduced graphene oxide (HRGO), sulfonated graphene (SG), and magnetic sulfonated graphen...
We compared the proliferation and differentiation of mouse neuroblastoma Neuro 2A cell line on single layer graphene and glass substrates. Quantitative and qualitative analysis of the cell proliferation and differentiation were performed, considering also the effect of a common adhesion factor, namely polylysine. We observed that on graphene substr...
Oceans and seas are of paramount importance to the health of planet Earth and human kind. Marine ecosystems should be defended against attack of polluting agents by continuous monitoring; the means of such monitoring should be as green as possible, i.e. based on sensors manufactured by biocompatible and easily disposable raw materials. In this stud...
Light emitting diodes (LED) based on halide perovskite nanocrystals (NC) have received widespread attention in recent years. In particular, LEDs based on CsPbBr3 NCs were the object of special interest. Here, we report for the first time green LED based on CsPbBr3 NCs treated with ammonium thiocyanate solution before purification with polar solvent...
We present an advanced image analysis study of the 3D surfaces of silver/diamond-like carbon nanocomposite films prepared by radio-frequency plasma-enhanced chemical vapour deposition. Atomic force microscopy data were analysed, with the goal to provide image analysis tools allowing for a better understanding of the structure–property correlation,...
A low-energy, magnetically-driven milling technique for the synthesis of silver nanoparticles is proposed, where the grinding medium and the metal precursor consisting of silver spheres have the same shape and size, belonging to a millimetric scale. The process is carried out at room temperature in aqueous solvent, where different types of capping...
In this work we investigated the possibility of using living cells as stress sensing material in biosensors. This approach requires the necessity to cultivate them on biocompatible electrical conducting substrate and to insert the circuit into a culture chamber that must assure both the transport of oxygen and the diffusion of the medium containing...
Skeletal muscle differentiation was proven to be influenced by changes in the substrate stiffness. However, a lack of knowledge features this field, concerning skeletal muscle tissues obtained from human induced pluripotent stem cells. Here we report the fabrication of polydimethylsiloxane-based substrates in a range of stiffness values from 3.5 to...
Full-text view-only version available at: https://rdcu.be/bl3vj
This work reports a systematic and quantitative evaluation of the effects induced on the adhesive properties of carbon fiber reinforced polymer (CFRP) substrates by various vacuum cold-plasma treatments. In particular, surface activation of the CFRP substrates was performed using sever...
The bone-implant interface influences peri-implant bone healing and osseointegration. Among various nano-engineering techniques used for titanium surface modification, anodization is a simple, high-throughput and low-cost process, resulting in a nanoporous oxide coating which can promote osseointegration and impart antimicrobial and immunomodulator...
A process concerning bismuth nanoparticle synthesis by an eco-fiendly reductant in mixed solvents is proposed. The method relies upon a redox reaction carried out at mild operative conditions using tin salts as electron donors. The reaction is performed in the presence of polyvinyl-pyrrolidone (PVP) and sodium dodecyl-sulphate (SDS) as capping agen...
Air abrasion is used in dentistry for cavity opening, post-endodontic cavity cleaning, and removal of hard deposits or stains. Different applications may require different settings. We aimed to gain better understanding of the effect of some operating parameters on the efficiency of air abrasion on a model dental material. We abraded lithium disili...
We report about the response of N2a cells, a mouse neuroblastoma cell line, cultured on inert substrates with controlled porous nanostructure. The substrate surfaces were obtained by anodization and post-fabrication etching of thin aluminum films previously deposited onto glass. The morphology of the adherent cells was assessed by scanning electron...