Maurizio Musso

• Dr.
• Professor Emeritus at University of Salzburg

The fate of photogenerated charges within ferroelectric metal oxides is key for photocatalytic applications. The authors study the contributions of i) tetragonal distortion, responsible for spontaneous polarization, and ii) point defects, on charge separation and recombination within BaTiO3 (BTO) nanocrystals of cubic and tetragonal structure. Elec...

Recently, carbon spherogels have been introduced as a novel monolithic aerogel composed of hollow spheres. This material is conveniently obtained via polystyrene (PS) sphere templating. In the present study, we apply a water-soluble titania precursor (titanium(IV) bis(ammonium lactate) to the aqueous sol-gel synthesis based on resorcinol-formaldehy...

Gold nanoparticle/silicon composites are canonical substrates for sensing applications because of their geometry-dependent physicochemical properties and high sensing activity via surface-enhanced Raman spectroscopy (SERS). The self-assembly of gold nanoparticles (AuNPs) synthesized via wet-chemistry on functionalized flat silicon (Si) and vertical...

A promising route to monolithic, hollow sphere carbon assemblies based on sustainable precursors with a tailored nanostructure is presented. These carbon assemblies, recently termed carbon spherogels, are generated via a polystyrene sphere template-based sol-gel process of mimosa tannin and biomass-derived 5-(hydroxymethyl)furfural. By completely r...

Simple substrates for surface enhanced Raman spectroscopy (SERS), producible in a cost-efficient way, are of growing interest both for scientific and for environmental applications. In this study, we demonstrate the use of three types of bio-based tannin-furanic rigid foams as precursor materials for SERS substrates. Coated with a silver layer, the...

The actual chemical structure of polyfurfuryl alcohol (PFA) is still uncertain in spite of several studies on the topic, variations during the polymerization processes being one reason that must be addressed. The use of a limited set of analytical techniques is often insufficient to provide an exhaustive chemical characterization. Moreover, it is s...

Extraordinarily homogeneous, freestanding titania-loaded carbon spherogels can be obtained using Ti(acac)2(OiPr)2 in the polystyrene sphere templated resorcinol-formaldehyde gelation. Thereby, a distinct, crystalline titania layer is achieved inside every hollow sphere...

We present a perspective of the industrial realization of plasmonic devices especially for life science and in vitro diagnostic applications. The main focus is on the manufacturing technologies Nanoimprint Lithography and injection molding as scalable processes for high volume manufacturing. Both technologies have their individual strengths and tec...

Poly(methyl methacrylate) (PMMA) is a very versatile polymer being used as a glass substitute or as economical alternative to polycarbonate for many types of important applications, due to its particular physical proprieties. In this study we deal with the Raman spectroscopic characterization of the glass transition of PMMA, the value of the glass...

This study presents a method to determine adulteration of olive oil (obtained from Olea europea, i.e. olives) with rapeseed oil (obtained from Brassica napus) or with corn oil (also named maize oil, obtained from Zea mays, i.e. maize) using Raman spectroscopy and a mathematical method based on exponential equation fit. The samples were prepared by...

We report on a quick, simple, and cost-effective solution-phase approach to prepare centimeter-sized morphology-graded vertically aligned Si nanowire arrays. Gradients in the nanowire diameter and shape are encoded through the macroscale substrate via a “dip-etching” approach, where the substrate is removed from a KOH etching solution at a constant...

Many of current bio-based materials are not fully or partly used for material utilization, as the composition of their raw materials and/or possible applications are unknown. This study deals with the analysis of the wood extractives from three different tissue of larch wood: Sapwood mainly from outer part of the log, and sound knotwood as well as...

In this paper, possible influences of various infill orientations (deposition angles) on specific material characteristics—such as tensile strength, compressive strength, charpy impact strength and heat deflection temperature (HDT)—of fused layer modeling (FLM) processed test specimens were evaluated. Two specially made wood filaments, made of the...

Polyfurfuryl alcohol (PFA) is one of the most intriguing polymers because, despite its easy polymerization in acid environment, its molecular structure is definitely not obvious. Many studies have been performed in recent decades, and every time, surprising aspects came out. With the present study, we aim to take advantage of all of the findings of...

This work shows that bulk ionic liquids (ILs) and their water solution can be conveniently investigated by synchrotron-based UV resonance Raman (UVRR) spectroscopy. The main advantages of this technique for the investigation of the local structure and intermolecular interactions in imidazolium-based ILs are presented and discussed. The unique tunab...

This work shows that bulk ionic liquids (ILs) and their water solution can be conveniently investigated by synchrotron-based UV resonance Raman (UVRR) spectroscopy. The main advantages of this technique for the investigation of the local structure and intermolecular interactions in imidazolium-based ILs are presented and discussed. The unique tunab...

See https://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_14_3_5807_Wagner_Identification_Antimicrobial_Compounds_Larch. Larch bark is an undervalued material, but it has unique and valuable characteristics and compounds. The objective of this study was to extract and characterize molecular compounds of bark materials from different larch...

Here it is reported a multidisciplinary approach based on tomography and infrared techniques applied to the characterization of tannin porous rigid foams, potentially usable as new insulating materials in green building technology. With conventional x-ray tomography it was possible to preliminary evaluate the homogeneity of the samples at low resol...

https://www.ndt.net/article/ctc2019/papers/iCT2019_Full_paper_42.pdf

A templated electrochemical technique for patterning macroscopic arrays of single-crystalline Si micro- and nanowires with feature dimensions down to 5 nm is reported. This technique, termed three-dimensional electrochemical axial lithography (3DEAL), allows the design and parallel fabrication of hybrid silicon nanowire arrays decorated with comple...

This work, intended for advanced undergraduate students, explains the basic concepts and an actual scientific use of Terahertz Raman spectroscopy, displaying some of the benefits of this versatile technique for structural analysis of molecules building up materials since this technique has been increasingly used for molecular characterization in ch...

See https://authors.elsevier.com/c/1V~Gc4xB1qMYcn . The Brill transition is a phase transition process in polyamides related with structural changes between the hydrogen bonds of the lateral functional groups (C=O) and (N-H). In this study, we have used the potential of Raman spectroscopy for exploring this phase transition in polyamide 6,6 (nylon...

Surface-enhanced Raman scattering (SERS) is a versatile spectroscopic technique that suffers from reproducibility issues and usually requires complex substrate fabrication processes. In this article, we report the use of a simple mass production technology based on Blu-ray disc manufacturing technology to prepare large area SERS substrates (∼40 mm²...

In polymeric materials the glass transition (GT) is a well-known and very important relaxation process related to movements of functional groups in the polymeric chain. In this work, we show the potential of Raman spectroscopy for exploring the GT process in the polymer polystyrene. We collected Raman spectra during a step-by-step heating process o...

γ, β and α relaxation processes in nylon 6,6 were studied by means of Raman spectroscopy, being a vibrational spectroscopic technique sensitive to chemical groups in the polymeric matrix and therefore sensitive to temperature dependent changes in the molecular configuration of the polymeric sample probed. Through a temperature-dependent Raman spect...

Li oxide garnets are among the most promising candidates for solid-state electrolytes in novel Li ion and Li metal based battery concepts. Cubic Li7La3Zr2O12 stabilized by a partial substitution of Zr⁴⁺ by Bi⁵⁺ has not been the focus of research yet, despite the fact that Bi⁵⁺ would be a cost-effective alternative to other stabilizing cations such...

This article describes the analysis of the Brill transition in nylon 6,6 by Raman spectroscopy through heating and cooling processes of the sample. When nylon is heated at approximately 160 °C, a crystalline phase transition occurs from a triclinic structure at room temperature to a pseudohexagonal structure above that temperature. This phase trans...

Li7-2xLa3Zr2-xMoxO12 (x = 0.1—0.4) are prepared by calcining a stoichiometric mixture of Li2CO3, La2O3, ZrO2, and MoO3 (850 °C, 4 h), followed by grinding and final sintering (1230 °C, 4 h).

Cubic Li7La3Zr2O12 (LLZO) garnets are exceptionally well suited to be used as solid electrolytes or protecting layers in "Beyond Li-ion Battery" concepts. Unfortunately, cubic LLZO is not stable at room temperature (RT) and has to be stabilized by supervalent dopants. In this study we demonstrate a new possibility to stabilize the cubic phase at RT...

The solvation structure around the Li+ ion in a mixed cyclic/linear carbonate solution, an important factor for the performance of lithium-based rechargeable batteries, is examined by measuring and analyzing the noncoincidence effect observed for the C=O stretching Raman band. This technique has the advantage of perceiving relative distances and or...

The ability of bone graft substitutes to promote new bone formation has been increasingly used in the medical field to repair skeletal defects or to replace missing bone in a broad range of applications in dentistry and orthopedics. A common way to assess such materials is via micro computed tomography (µ-CT), through the density information conten...

Vibrational spectroscopy is one of the most powerful tools in polymer science. Three main techniques-Fourier transform infrared spectroscopy (FT-IR), FT-Raman spectroscopy, and FT near-infrared (NIR) spectroscopy-can also be applied to wood science. Here, these three techniques were used to investigate the chemical modification occurring in wood af...

Microporous iron(II)- and manganese(II)-aluminophosphates zeotypes with the laumontite framework topology were prepared under solvothermal and ionothermal synthesis conditions at 453 and 433 K. The structures of (C3N2H5)(7.5)[(Al16.5Fe7.5P24O96)-P-II] and of (C3N2H5)(5.7)[(Al18.3Mn5.7P24O96)-P-II] were determined using single-crystal X-ray structur...

In recent years, bone graft substitutes have been increasingly used in the medical field, for example, in order to promote new bone formation. Microcomputed tomography ( μ -CT) is an image-guided technique used in medicine as well as in materials science, enabling the characterization of biomaterials with high spatial resolution. X-ray-based method...

In this study, bark-based insulation boards were made out of pine (Pinus sylvestris) bark. Their properties seem to be promising with regard to thermal conductivity, heat storage capacity, and mechanical characteristics. The influences of panel density, resin content, and particle size on the relevant board properties were studied, showing that it...

Besides other ligno-cellulosic materials such as straw, rice husks, or bagasse, wet blue particles from leather production are a promising new raw material stock for wood-based panels, as they offer not only a high availability, but increase the properties of the panel with regard to fire resistance or mechanical characteristics. A panel with a mix...

A combined experimental and theoretical analysis is carried out on the polarized (isotropic and anisotropic) Raman spectra in the spectral region of the C═O stretching (amide I) band of three isotopic liquid mixtures of N,N-dimethylformamide (normal/d(1), normal/d(6), and normal/(13)C═O). Two distinct types of spectral behavior are found for the is...

Fourier Transform Raman spectroscopy (FT-Raman) has been applied for the non-destructive in-situ analysis of pigments on differently colored flower petals of pansy cultivars (Viola x wittrockiana). The main target of the present study was to investigate how far the Raman mapping technique through FT-Raman spectroscopy and cluster analysis of the Ra...

Fourier Transform Raman spectroscopy (FT-Raman) has been applied for the non-destructive in-situ analysis of pigments on differently colored flower petals of pansy cultivars (Viola x wittrockiana). The main target of the present study was to investigate how far the Raman mapping technique through FT-Raman spectroscopy and cluster analysis of the Ra...

The concentration dependence of the Raman non-coincidence effect is investigated for the υ3(12C=O) band of the acetone–CCl4 binary mixtures. Emphasis is placed mainly upon a comparison of the results obtained from Monte Carlo simulations with those from Raman measurements. There is very good quantitative agreement between the results of the simulat...

We have measured the Raman isotropic profiles of the (C N) band at 2235 cm-1 for five solutions of ME6N (4-cyanophenyl-4'-hexylbenzoate) liquid crystal dissolved in CCl4 in the range from x = 0.12 to 0.007 (x, mole fraction of ME6N) and then obtained the corresponding vibrational correlation functions, Cv(t), by time Fourier transformation. The inc...

Halophilic archaebacteria (haloarchaea) are found in environments with salt concentrations approaching saturation, such as natural brines, marine solar salterns and alkaline salt lakes; they have also been isolated from ancient subsurface salt sediments of great geological age (195–280 million years). Some of the strains from geologically old sedim...

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We have investigated the Raman noncoincidence effect (NCE = nu(aniso)-nu(iso), where nu(aniso) and nu(iso) are the anisotropic and the isotropic Raman frequencies) of the nu(C=O) band of acetone arising from the interactions of this solvent with the metal ions in acetone electrolytic solutions of alkaline earth metal (Mg, Ca, Sr, Ba) perchlorates....

Evidence for the widespread occurrence of extraterrestrial halite, particularly on Mars, has led to speculations on the possibility of halophilic microbial forms of life; these ideas have been strengthened by reports of viable haloarchaea from sediments of geological age (millions of years). Raman spectroscopy, being a sensitive detection method fo...

The noncoincidence effect of the C{double bond, short}O stretch of acetone and of the O-H stretch of methanol in acetone/methanol mixtures has been studied as function of the concentration of the two liquids in the mixture at 293 K. The observed convex concentration dependence of the noncoincidence effect both for the C{double bond, short}O stretch...

The isolation of viable extremely halophilic archaea from 250-million-year-old rock salt suggests the possibility of their long-term survival under desiccation. Since halite has been found on Mars and in meteorites, haloarchaeal survival of martian surface conditions is being explored. Halococcus dombrowskii H4 DSM 14522(T) was exposed to UV doses...

Omphacites are very important in petrology because of their occurrence in rocks metamorphosed under high-pressure conditions. They have a wide thermobaric range of stability. Raman spectra of a natural, iron-bearing, ordered omphacite have been studied and compared with the experimentally disordered spectra. The order–disorder phase transition caus...

The C=O stretching [nu(C=O)] Raman bands of the carbonyl solvents, S (acetone and acetophenone), in some electrolytic solutions of lithium and sodium salts (M(+)X(-)) are analyzed. The large and negative values of the noncoincidence effect (NCE=nu(ani)-nu(iso)) measured for the component of this band generated by the solvent-ion interactions are in...

Unusual Ti–Cr–Zr-rich garnet crystals from high-temperature melilitic skarn of the Maronia area, western Thrace, Greece, were investigated by electron-microprobe analysis, powder and single-crystal X-ray diffraction, IR, Raman and Mössbauer spectroscopy. Chemical data showed that the garnets contain up to 8wt.% TiO2, 8wt.% Cr2O3 and 4wt.% ZrO2, rep...

The modulations of the vibrational frequencies and other vibrational properties are analyzed for the CO stretching band of liquid acetone, as an example of coupled-oscillators systems where the vibrational modes are delocalized. The analysis is carried out both on the basis of the vibrations of individual molecules and on the basis of the normal mo...

The Raman spectroscopic noncoincidence effect (NCE) of the ν(CO) band of the liquid crystal ME6N (4-cyanophenyl-4′-hexylbenzoate) has been measured at different temperatures (47–52 °C) around the nematic-isotropic phase transition (47.8 °C) employing a micro-Raman experiment under confocal conditions and performed on a homogeneously aligned thin sa...

The concentration dependences of the first moments of both the isotropic and anisotropic Raman bands of the CO stretching mode ν(12CO) of acetone in chemical mixtures of type [(CH3)2CO]x–[CCl4]1−x are compared with their dependences in isotopic mixtures of type [(CH3)212CO]x–[(CH3)213CO]1−x. The role of the intermolecular resonant vibrational coupl...

In the context of the dynamical characterisation of liquid systems, in this paper we critically compare methodological approaches formulated for the determination of the dynamics in complex molecular liquids. We will show that the experimental vibrational relaxation of the ν(CN) mode of the ME6N liquid crystal in the isotropic phase is successfully...

The splitting behaviour of the 2p22p~{}^{2} P3/2 hyperfine structure levels is investigated in 6Li for homogeneous crossed electric and magnetic fields (Stark-Zeeman effect). This is done by diagonalizing the perturbation matrix comprising the hyperfine interaction, the electronic and nuclear magnetic interaction and the effective electric inter...

A time-domain method for simulating vibrational band profiles that simultaneously takes into account both the diagonal and off-diagonal effects is developed and applied to the C=O stretching bands of neat liquid acetone and the acetone/dimethyl sulfoxide (DMSO) binary liquid mixtures. By using this method, it is possible to examine the influence of...

The nu(C=O) Raman band frequencies of acetone have been analyzed to separate the contributions of the environmental effect and the vibrational coupling to the gas-to-liquid frequency shifts of this band and to elucidate the changes in these two contributions upon dilution in DMSO. We have measured the frequencies of the nu((12)C=O) band in acetone/...

We study the magnetic-field-induced dichroism on a sample of gallium neutral atoms created in a hollow cathode lamp and describe a method for robust stabilization of violet–blue diode lasers tuned on gallium atomic transitions for an atom nanofabrication experiment. We compare the experimental dichroic signals with theoretical simulations obtained...

By means of a Brillouin scattering experiment in methanol/CCl4 mixtures, deviations of the hyperacoustic parameters from the ideal behavior are studied as a function of concentration and of temperature. The experimental results are compared with the indication from a literature model describing the dependence of hypersonic velocity in weakly intera...

The Raman scattering profiles of the vibrational modes of the nematic liquid crystal ME6N were investigated in the isotropic phase at different temperatures. The vibrational time correlation functions showed that the system experiences an intermediate dynamical regime that gets slightly faster with an increase in temperature. The application of vib...

The frequency dependence of hypersonic absorption and the dispersion of hypersonic speed in liquid sulfur dioxide (SO2) were determined at (293.75±0.30) K and at (284.65±0.30) K by Brillouin spectroscopy. The results are used to experimentally establish the second relaxation step in the double vibrational relaxation of these quantities in the liqui...

A Brillouin scattering experiment has been performed on the methanol/CCl4 mixture as a function of the concentration to test the hypothesis, recently suggested by Raman spectroscopy experiments, of some clustering effects. The obtained concentration dependence of the adiabatic compressibility diverges from that expected for an ideal mixture. The ob...

Isotropic Raman line shapes of simple molecular fluids exhibit critical line broadening near their respective liquid-gas critical points. In order to observe this phenomenon, it is essential that the band position of a given vibrational mode is density-dependent, and that vibrational depopulation processes negligibly contribute to line broadening....

The low frequency (100 kHz) dielectric behaviour at room temperature of methanol/carbon tetrachloride solutions over the whole composition range is compared with the ideal case as described in the framework of Onsager theory. We find negative deviation at high methanol dilution and an opposite behaviour at high concentration. While the formation of...

The fossil resin siegburgite is known from two localities in Europe: Siegburg, near Bonn, and the ‘Goitsche,’ near Bitterfeld, both in Germany. Raman spectroscopic data on the material proved the polystyrene character of siegburgite and therefore supported the chemical investigations conducted previously. Cinnamic acid, which was identified as a ma...

The concentration dependence of the Raman noncoincidence effect (NCE) of the C−O and O−H stretching bands of methanol is investigated in methanol/CCl4 mixtures in the range of 1.0 ≥ xm ≥ 0.1, where xm is the mole fraction of methanol, by performing Raman spectroscopic measurements and molecular dynamics (MD) simulations. Band asymmetry observed for...

A novel ternary phase, SnyNi4Sb12−xSnx, has been characterized and found to exhibit a wide range of homogeneity (at 250 °C, 2.4 ≤ x ≤ 5.6, 0 ≤ y ≤ 0.31; at 350 °C, 2.7 ≤ x ≤ 5.0, 0 ≤ y ≤ 0.27). SnyNi4Sb12−xSnx crystallizes in a skutterudite-based structure in which Sn atoms are found to occupy two crystallographically inequivalent sites: (a) Sn and...

In order to improve the experimental database about the additional nonrotational broadening of vibrational line shapes observable when a simple fluid approaches its gas-liquid critical point, we improved the pioneering measurements of Clouter and Kiefte [for their own review see Phys. Rev. A 33, 2749 (1986)] on the critical behavior of the polarize...

This study investigates whether benzene may be effective in promoting the sign inversion of the non-coincidence effect of the carbonyl stretching mode, v3(C=O), of acetone in the high dilution regime, as claimed in literature. We have found that benzene leaves the non-coincidence effect positive in the whole concentration range and unaltered with r...