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Cassetta M, Giannetta B, Enrichi F, Zaccone C, Mariotto G, Giarola M, Nodari L, Zanatta M, Daldosso N. Effect of the alkali vs iron ratio on glass transition temperature and vibrational properties of synthetic basalt-like glasses. Spectrochim Acta A Mol Biomol Spectrosc 2023; 293:122430. [PMID: 36780741 DOI: 10.1016/j.saa.2023.122430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 11/12/2022] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
Volcanic eruptions generate huge amounts of material with a wide range of compositions and therefore different physicochemical properties. We present a combined Raman and calorimetric study carried out on four synthetic basaltic glasses with different alkali vs iron ratio which spans the typical compositions of basalts on Earth. Differential scanning calorimetry shows that changes of this ratio modify the glass transition interval whereas Raman spectra allow to gain insight about the structure of the glass in the microscopic and macroscopic range. Indeed, our Raman analysis is extended from the high frequency region, characterized by the molecular peaks, to the very low frequency region where glasses exhibit the boson peak. Spectra show a variation of the non-bridging oxygens number that affects the medium range order of the glass and the network interconnections. In the considered substitution interval, the boson peak shape is conserved while its position shift upwards. This means that increasing the alkali vs iron content, the elastic medium hardens but it does not change nature. This study emphasizes the importance of considering the full-range spectra when analysing multicomponent or natural systems with small chemical variations.
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Affiliation(s)
- Michele Cassetta
- Department of Computer Sciences, University of Verona, I-37134 Verona, Italy.
| | - Beatrice Giannetta
- Department of Biotechnology, University of Verona, I-37134 Verona, Italy
| | - Francesco Enrichi
- Department of Computer Sciences, University of Verona, I-37134 Verona, Italy
| | - Claudio Zaccone
- Department of Biotechnology, University of Verona, I-37134 Verona, Italy; National Institute of Geophysics and Volcanology, I-00143 Roma, Italy
| | - Gino Mariotto
- Department of Computer Sciences, University of Verona, I-37134 Verona, Italy
| | - Marco Giarola
- Centre for Technological Platform (CPT), University of Verona, I-37134 Verona, Italy
| | - Luca Nodari
- Institute of Condensed Matter Chemistry and Technologies for Energy, National Research Council (ICMATE-CNR), I-35127 Padova, Italy
| | - Marco Zanatta
- Department of Physics, University of Trento, I-38123 Trento, Italy
| | - Nicola Daldosso
- Department of Computer Sciences, University of Verona, I-37134 Verona, Italy
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2
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Giannetta B, Plaza C, Cassetta M, Mariotto G, Benavente-Ferraces I, García-Gil JC, Panettieri M, Zaccone C. The effects of biochar on soil organic matter pools are not influenced by climate change. J Environ Manage 2023; 341:118092. [PMID: 37167698 DOI: 10.1016/j.jenvman.2023.118092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/20/2023] [Accepted: 05/03/2023] [Indexed: 05/13/2023]
Abstract
The sustainability of Mediterranean croplands is threatened by climate warming and rainfall reduction. The use of biochar as an amendment represents a tool to store organic carbon (C) in soil. The vulnerability of soil organic C (SOC) to the joint effects of climate change and biochar application needs to be better understood by investigating its main pools. Here, we evaluated the effects of partial rain exclusion (∼30%) and temperature increase (∼2 °C), combined with biochar amendment, on the distribution of soil organic matter (SOM) into particulate organic matter (POM) and the mineral-associated organic matter (MAOM). A set of indices suggested an increase in thermal stability in response to biochar addition in both POM and MAOM fractions. The MAOM fraction, compared to the POM, was particularly enriched in labile substances. Data from micro-Raman spectroscopy suggested that the POM fraction contained biochar particles with a more ordered structure, whereas the structural order decreased in the MAOM fraction, especially after climate manipulation. Crystalline Fe oxides (hematite) and a mix of ferrihydrite and hematite were detected in the POM and in the MAOM fraction, respectively, of the unamended plots under climate manipulation, but not under ambient conditions. Conversely, in the amended soil, climate manipulation did not induce changes in Fe speciation. Our work underlines the importance of discretely taking into account responses of both MAOM and POM to better understand the mechanistic drivers of SOC storage and dynamics.
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Affiliation(s)
- Beatrice Giannetta
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - César Plaza
- Instituto de Ciencias Agrarias, Consejo Superior de Investigaciones Científicas, Serrano 115 bis, 28006, Madrid, Spain
| | - Michele Cassetta
- Department of Computer Sciences, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - Gino Mariotto
- Department of Computer Sciences, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - Iria Benavente-Ferraces
- Instituto de Ciencias Agrarias, Consejo Superior de Investigaciones Científicas, Serrano 115 bis, 28006, Madrid, Spain
| | - Juan Carlos García-Gil
- Instituto de Ciencias Agrarias, Consejo Superior de Investigaciones Científicas, Serrano 115 bis, 28006, Madrid, Spain
| | - Marco Panettieri
- Instituto de Ciencias Agrarias, Consejo Superior de Investigaciones Científicas, Serrano 115 bis, 28006, Madrid, Spain
| | - Claudio Zaccone
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy.
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El Mendili Y, Vaitkus A, Merkys A, Gražulis S, Chateigner D, Mathevet F, Gascoin S, Petit S, Bardeau JF, Zanatta M, Secchi M, Mariotto G, Kumar A, Cassetta M, Lutterotti L, Borovin E, Orberger B, Simon P, Hehlen B, Le Guen M. Raman Open Database: first interconnected Raman-X-ray diffraction open-access resource for material identification. J Appl Crystallogr 2019; 52:618-625. [PMID: 31236093 PMCID: PMC6557180 DOI: 10.1107/s1600576719004229] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 03/28/2019] [Indexed: 11/10/2022] Open
Abstract
Detailed crystallographic information provided by X-ray diffraction (XRD) is complementary to molecular information provided by Raman spectroscopy. Accordingly, the combined use of these techniques allows the identification of an unknown compound without ambiguity. However, a full combination of Raman and XRD results requires an appropriate and reliable reference database with complete information. This is already available for XRD. The main objective of this paper is to introduce and describe the recently developed Raman Open Database (ROD, http://solsa.crystallography.net/rod). It comprises a collection of high-quality uncorrected Raman spectra. The novelty of this database is its interconnectedness with other open databases like the Crystallography Open Database (http://www.crystallography.net/cod and Theoretical Crystallography Open Database (http://www.crystallography.net/tcod/). The syntax adopted to format entries in the ROD is based on the worldwide recognized and used CIF format, which offers a simple way for data exchange, writing and description. ROD also uses JCAMP-DX files as an alternative format for submitted spectra. JCAMP-DX files are compatible to varying degrees with most commercial Raman software and can be read and edited using standard text editors.
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Affiliation(s)
- Yassine El Mendili
- Normandie Université, CRISMAT-ENSICAEN, UMR6508 CNRS, Université de Caen Normandie, 6 Boulevard Maréchal Juin, 14050 Caen, France
| | - Antanas Vaitkus
- Vilnius University, Institute of Biotechnology, Saulėtekio av. 7, LT-10257 Vilnius, Lithuania
| | - Andrius Merkys
- Vilnius University, Institute of Biotechnology, Saulėtekio av. 7, LT-10257 Vilnius, Lithuania
| | - Saulius Gražulis
- Vilnius University, Institute of Biotechnology, Saulėtekio av. 7, LT-10257 Vilnius, Lithuania
| | - Daniel Chateigner
- Normandie Université, CRISMAT-ENSICAEN, UMR6508 CNRS, Université de Caen Normandie, 6 Boulevard Maréchal Juin, 14050 Caen, France
| | - Fabrice Mathevet
- Normandie Université, CRISMAT-ENSICAEN, UMR6508 CNRS, Université de Caen Normandie, 6 Boulevard Maréchal Juin, 14050 Caen, France
| | - Stéphanie Gascoin
- Normandie Université, CRISMAT-ENSICAEN, UMR6508 CNRS, Université de Caen Normandie, 6 Boulevard Maréchal Juin, 14050 Caen, France
| | - Sebastien Petit
- Normandie Université, CRISMAT-ENSICAEN, UMR6508 CNRS, Université de Caen Normandie, 6 Boulevard Maréchal Juin, 14050 Caen, France
| | - Jean-François Bardeau
- Institut des Molécules et Matériaux du Mans, UMR6283 CNRS, Le Mans Université, Avenue Olivier Messiaen, 72085 Le Mans, France
| | - Marco Zanatta
- Department of Computer Science, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Maria Secchi
- Department of Industrial Engineering, University of Trento, via Sommarive 9, 38123 Trento, Italy
| | - Gino Mariotto
- Department of Computer Science, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Arun Kumar
- Department of Computer Science, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Michele Cassetta
- Department of Computer Science, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Luca Lutterotti
- Department of Industrial Engineering, University of Trento, via Sommarive 9, 38123 Trento, Italy
| | - Evgeny Borovin
- Department of Industrial Engineering, University of Trento, via Sommarive 9, 38123 Trento, Italy
| | - Beate Orberger
- GEOPS-Paris Sud, Université Paris-Saclay, UMR8148 (CNRS-UPS), Bâtiment 504, 91405 Orsay, France
| | - Patrick Simon
- CEMHTI, UPR CNRS 3079, Université d'Orléans, 1D Avenue de la Recherche Scientifique, 45071 Orléans Cedex 2, France
| | - Bernard Hehlen
- Laboratoire Charles Coulomb, UMR5521 CNRS, Université Montpellier 2, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
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Allodi V, Brutti S, Giarola M, Sgambetterra M, Navarra MA, Panero S, Mariotto G. Structural and Spectroscopic Characterization of A Nanosized Sulfated TiO₂ Filler and of Nanocomposite Nafion Membranes. Polymers (Basel) 2016; 8:polym8030068. [PMID: 30979163 PMCID: PMC6432523 DOI: 10.3390/polym8030068] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 02/19/2016] [Accepted: 02/23/2016] [Indexed: 01/20/2023] Open
Abstract
A large number of nano-sized oxides have been studied in the literature as fillers for polymeric membranes, such as Nafion®. Superacidic sulfated oxides have been proposed and characterized. Once incorporated into polymer matrices, their beneficial effect on peculiar membrane properties has been demonstrated. The alteration of physical-chemical properties of composite membranes has roots in the intermolecular interaction between the inorganic filler surface groups and the polymer chains. In the attempt to tackle this fundamental issue, here we discuss, by a multi-technique approach, the properties of a nanosized sulfated titania material as a candidate filler for Nafion membranes. The results of a systematic study carried out by synchrotron X-ray diffraction, transmission electron microscopy, thermogravimetry, Raman and infrared spectroscopies are presented and discussed to get novel insights about the structural features, molecular properties, and morphological characteristics of sulphated TiO₂ nanopowders and composite Nafion membranes containing different amount of sulfated TiO₂ nanoparticles (2%, 5%, 7% w/w).
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Affiliation(s)
- Valentina Allodi
- Department of Computer Science, University of Verona, Strada le Grazie 15, 37134 Verona, Italy.
| | - Sergio Brutti
- Department of Sciences, University of Basilicata, V.le dell'Ateneo Lucano 10, 85100 Potenza, Italy.
| | - Marco Giarola
- Department of Computer Science, University of Verona, Strada le Grazie 15, 37134 Verona, Italy.
| | - Mirko Sgambetterra
- Department of Chemistry, Sapienza University of Rome. P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Maria Assunta Navarra
- Department of Chemistry, Sapienza University of Rome. P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Stefania Panero
- Department of Chemistry, Sapienza University of Rome. P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Gino Mariotto
- Department of Computer Science, University of Verona, Strada le Grazie 15, 37134 Verona, Italy.
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5
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Catalano M, Bloise A, Pingitore V, Miriello D, Cazzanelli E, Giarola M, Mariotto G, Barrese E. Effect of Mn doping on the growth and properties of enstatite single crystals. Crystal Research and Technology 2014. [DOI: 10.1002/crat.201400102] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Manuela Catalano
- Department of Biology, Ecology and Earth Sciences; University of Calabria; 87036 Rende Italy
| | - Andrea Bloise
- Department of Biology, Ecology and Earth Sciences; University of Calabria; 87036 Rende Italy
| | | | - Domenico Miriello
- Department of Biology, Ecology and Earth Sciences; University of Calabria; 87036 Rende Italy
| | - Enzo Cazzanelli
- Department of Physics; University of Calabria; 87036 Rende Italy
| | - Marco Giarola
- Department of Computer Science; University of Verona; 37134 Verona Italy
| | - Gino Mariotto
- Department of Computer Science; University of Verona; 37134 Verona Italy
| | - Eugenio Barrese
- Department of Biology, Ecology and Earth Sciences; University of Calabria; 87036 Rende Italy
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6
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Crupi V, Fontana A, Giarola M, Longeville S, Majolino D, Mariotto G, Mele A, Paciaroni A, Rossi B, Trotta F, Venuti V. Vibrational Density of States and Elastic Properties of Cross-Linked Polymers: Combining Inelastic Light and Neutron Scattering. J Phys Chem B 2014; 118:624-33. [DOI: 10.1021/jp410448y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Vincenza Crupi
- Department
of Physics and Earth Sciences, University of Messina, CNISM UdR Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
| | - Aldo Fontana
- Department
of Physics, University of Trento, Via Sommarive 14, 38123 Povo, Trento, Italy
| | - Marco Giarola
- Department
of Computer Science, University of Verona, Strada le Grazie 15, 37134 Verona, Italy
| | - Stéphane Longeville
- Laboratoire Léon
Brillouin (CEA/CNRS), CEA Saclay, 91191 Gif-sur-Yvette Cedex, France
| | - Domenico Majolino
- Department
of Physics and Earth Sciences, University of Messina, CNISM UdR Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
| | - Gino Mariotto
- Department
of Computer Science, University of Verona, Strada le Grazie 15, 37134 Verona, Italy
| | - Andrea Mele
- Department
of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy
| | - Alessandro Paciaroni
- Department
of Physics, University of Perugia, Via A. Pascoli, 06123 Perugia, Italy
| | - Barbara Rossi
- Department
of Physics, University of Trento, Via Sommarive 14, 38123 Povo, Trento, Italy
| | - Francesco Trotta
- Dipartimento
di Chimica, Università di Torino, Via Pietro Giuria 7, 10125 Torino, Italy
| | - Valentina Venuti
- Department
of Physics and Earth Sciences, University of Messina, CNISM UdR Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
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7
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Zennaro L, Magro M, Vianello F, Rigo A, Mariotto G, Giarola M, Froner E, Scarpa M. Stable Aqueous Solutions of Naked Titanate Nanotubes. Chemphyschem 2013; 14:2786-92. [DOI: 10.1002/cphc.201300292] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Lucio Zennaro
- Dipartimento di Medicina Molecolare, Università di Padova and Istituto Nazionale di Biostrutture e Biosistemi via G. Colombo 3, 35100 Padova (Italy)
| | - Massimiliano Magro
- Dipartimento di Biomedicina Comparata ed Alimentazione, Università di Padova via G. Colombo 3, 35100 Padova (Italy)
| | - Fabio Vianello
- Dipartimento di Biomedicina Comparata ed Alimentazione, Università di Padova via G. Colombo 3, 35100 Padova (Italy)
| | - Adelio Rigo
- Dipartimento di Medicina Molecolare, Università di Padova and Istituto Nazionale di Biostrutture e Biosistemi via G. Colombo 3, 35100 Padova (Italy)
| | - Gino Mariotto
- Dipartimento di Informatica, Università di Verona, Strada le Grazie 15, 37134 Verona (Italy)
| | - Marco Giarola
- Dipartimento di Informatica, Università di Verona, Strada le Grazie 15, 37134 Verona (Italy)
| | - Elena Froner
- Dipartimento di Fisica, Università di Trento and Istituto Nazionale di Biostrutture e Biosistemi via Sommarive 14, 38123 Povo Trento (Italy), Fax: (+39) 0461282967
| | - Marina Scarpa
- Dipartimento di Fisica, Università di Trento and Istituto Nazionale di Biostrutture e Biosistemi via Sommarive 14, 38123 Povo Trento (Italy), Fax: (+39) 0461282967
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8
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Crupi V, Fontana A, Giarola M, Guella G, Majolino D, Mancini I, Mariotto G, Paciaroni A, Rossi B, Venuti V. Cyclodextrin-Complexation Effects on the Low-Frequency Vibrational Dynamics of Ibuprofen by Combined Inelastic Light and Neutron Scattering Experiments. J Phys Chem B 2013; 117:3917-26. [DOI: 10.1021/jp400509r] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vincenza Crupi
- Department of Physics and Earth
Sciences, University of Messina, Viale
Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
| | - Aldo Fontana
- Department of Physics, University of Trento, Via Sommarive 14, 38123 Povo,
Trento, Italy
- IPCF CNR, UOS Roma, I-00185 Roma, Italy
| | - Marco Giarola
- Department of Computer Science, University of Verona, Strada le Grazie 15, 37134 Verona,
Italy
| | - Graziano Guella
- Department of Physics, University of Trento, Via Sommarive 14, 38123 Povo,
Trento, Italy
| | - Domenico Majolino
- Department of Physics and Earth
Sciences, University of Messina, Viale
Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
| | - Ines Mancini
- Department of Physics, University of Trento, Via Sommarive 14, 38123 Povo,
Trento, Italy
| | - Gino Mariotto
- Department of Computer Science, University of Verona, Strada le Grazie 15, 37134 Verona,
Italy
| | - Alessandro Paciaroni
- Department of Physics, University of Perugia, Via A. Pascoli, 06123 Perugia,
Italy
| | - Barbara Rossi
- Department of Physics, University of Trento, Via Sommarive 14, 38123 Povo,
Trento, Italy
- Department of Computer Science, University of Verona, Strada le Grazie 15, 37134 Verona,
Italy
| | - Valentina Venuti
- Department of Physics and Earth
Sciences, University of Messina, Viale
Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
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Pin S, Piccinelli F, Upendra Kumar K, Enzo S, Ghigna P, Cannas C, Musinu A, Mariotto G, Bettinelli M, Speghini A. Structural investigation and luminescence of nanocrystalline lanthanide doped NaNbO3 and Na0.5K0.5NbO3. J SOLID STATE CHEM 2012. [DOI: 10.1016/j.jssc.2012.08.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Rahman A, Giarola M, Cattaruzza E, Gonella F, Mardegan M, Trave E, Quaranta A, Mariotto G. Raman microspectroscopy investigation of Ag ion-exchanged glass layers. J Nanosci Nanotechnol 2012; 12:8573-8579. [PMID: 23421246 DOI: 10.1166/jnn.2012.6808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The ion-exchange process is widely used to dope silicate glass layers with silver, aimed at controlling the Ag state in view of possible applications, ranging from light waveguide fabrication to nanostructured composite glass synthesis. The silver doped glass structure as well as its prescribed properties depend on both the preparation parameters and the subsequent treatments. Several structural aspects are still open with regard either to the modification of the glass incorporating the dopant, or to clustering phenomena silver undergoes as a function of its local concentration and state, which are in turn strongly dependent on the preparation route. Systematic characterizations of these systems are mandatory to address the role of the various synthesis parameters in giving rise to the observed features, thus pointing out the effective methodologies for the fabrication of silicate glass layers with the desired properties. In this work, the results of micro-Raman, optical absorption and photoluminescence characterizations are presented for soda-lime glass slides doped with silver by Ag(+)-Na+ exchange and subsequent thermal treatments in air. In particular, a cross-section profiling analysis by Raman micro-spectroscopy was performed on Ag ion-exchanged samples after treatment at some different temperatures. The experimental findings allow to elucidate the role of the treatment temperature in the clustering process related to the local Ag concentration inside the exchanged glass layer.
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Affiliation(s)
- A Rahman
- Department of Computer Science, Università di Verona, Strada le Grazie 15, 37134 Verona, Italy
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Rossi B, Caponi S, Castiglione F, Corezzi S, Fontana A, Giarola M, Mariotto G, Mele A, Petrillo C, Trotta F, Viliani G. Networking Properties of Cyclodextrin-Based Cross-Linked Polymers Probed by Inelastic Light-Scattering Experiments. J Phys Chem B 2012; 116:5323-7. [DOI: 10.1021/jp302047u] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Barbara Rossi
- Dipartimento di Fisica, Università di Trento, Via Sommarive 14, I-38123
Povo, Trento (Italy)
| | - Silvia Caponi
- Dipartimento di Fisica, Università di Trento, Via Sommarive 14, I-38123
Povo, Trento (Italy)
- Istituto
di Biofisica, Consiglio Nazionale delle Ricerche, via alla Cascata
56/C, I-38123 Trento (Italy)
| | - Franca Castiglione
- Dipartimento di Chimica, Materiali
e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza L. Da Vinci 32, I-20133 Milano (Italy)
| | - Silvia Corezzi
- Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123
Perugia (Italy)
| | - Aldo Fontana
- Dipartimento di Fisica, Università di Trento, Via Sommarive 14, I-38123
Povo, Trento (Italy)
| | - Marco Giarola
- Dipartimento
di Informatica, Università di Verona, Strada le Grazie 15, I-37134
Verona (Italy)
| | - Gino Mariotto
- Dipartimento
di Informatica, Università di Verona, Strada le Grazie 15, I-37134
Verona (Italy)
| | - Andrea Mele
- Dipartimento di Chimica, Materiali
e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza L. Da Vinci 32, I-20133 Milano (Italy)
| | - Caterina Petrillo
- Istituto
di Biofisica, Consiglio Nazionale delle Ricerche, via alla Cascata
56/C, I-38123 Trento (Italy)
- Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123
Perugia (Italy)
| | - Francesco Trotta
- Dipartimento di
Chimica IFM, Università di Torino, Via Pietro Giuria 7, I-10125
Torino (Italy)
| | - Gabriele Viliani
- Dipartimento di Fisica, Università di Trento, Via Sommarive 14, I-38123
Povo, Trento (Italy)
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Passuello T, Piccinelli F, Trevisani M, Giarola M, Mariotto G, Marciniak L, Hreniak D, Guzik M, Fasoli M, Vedda A, Jary V, Nikl M, Causin V, Bettinelli M, Speghini A. Structural and optical properties of Vernier phase lutetium oxyfluorides doped with lanthanide ions: interesting candidates as scintillators and X-ray phosphors. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm31317k] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Giarola M, Rossi B, Mosconi E, Fontanella M, Marzola P, Scambi I, Sbarbati A, Mariotto G. Fast and minimally invasive determination of the unsaturation index of white fat depots by micro-Raman spectroscopy. Lipids 2011; 46:659-67. [PMID: 21574019 DOI: 10.1007/s11745-011-3567-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2010] [Accepted: 04/19/2011] [Indexed: 11/26/2022]
Abstract
In the last 20 years increasing interest has been devoted to the investigation of white adipose tissue (WAT) because hypo- or hyperfunction of WAT is involved in the pathogenesis of obesity and other pathologies. The investigation and discrimination of different characteristics in adipose tissues by means of spectroscopic techniques appears as a topic of current interest, also in view of possible medical-technological applications. The aim of this work was to establish micro-Raman spectroscopy as a tool for the characterization of mammals fat tissue. After preliminary tests aimed at defining a suitable sample preparation protocol, Raman spectra of WAT specimens excised from mice of different ages were recorded in the energy range 750-3,350 cm⁻¹. Quantitative values of the unsaturation index were obtained through the calibration with HR-NMR spectra of lipid extracts. Raman spectroscopy detected a sharp increase in the unsaturation index between 22 and 30 days of age in close correspondence with the weaning of mice (21 days). The present results show that Raman spectroscopy is an inexpensive, fast and robust technique to analyze the unsaturation index of mammals fat tissues that could be routinely used in bioptic samples.
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Affiliation(s)
- M Giarola
- Dipartimento di Informatica, Università di Verona, Verona, Italy
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14
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Pedroni M, Piccinelli F, Passuello T, Giarola M, Mariotto G, Polizzi S, Bettinelli M, Speghini A. Lanthanide doped upconverting colloidal CaF2 nanoparticles prepared by a single-step hydrothermal method: toward efficient materials with near infrared-to-near infrared upconversion emission. Nanoscale 2011; 3:1456-60. [PMID: 21336370 DOI: 10.1039/c0nr00860e] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Colloidal Er(3+)/Yb(3+), Tm(3+)/Yb(3+) and Ho(3+)/Yb(3+) doped CaF(2) nanoparticles have been prepared by a one-pot hydrothermal procedure and their upconversion properties have been investigated.
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Affiliation(s)
- Marco Pedroni
- Laboratorio di Chimica dello Stato Solido, Dipartimento di Biotecnologie, Università di Verona and INSTM, UdR Verona, Strada Le Grazie 15, I-37134, Verona, Italy
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15
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Freire F, Franceschini D, Achete C, Brusa R, Mariotto G, Karwasz GP, Canteri R. Structural Disorder in Hard Amorphous Carbon Films Implanted with Nitrogen Ions. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-396-227] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractHard amorphous hydrogenated carbon films deposited by self-bias glow discharge were implanted at room temperature with 70 keV-nitrogen ions at fluences between 2.0 and 9.0×1016 N/cm2. The implanted samples were analyzed by Raman spectroscopy, SIMS and positron annihilation spectroscopy (Doppler broadening technique with the determination of the parameter S. For samples implanted with 2.0x1016 N/cm2 the S parameter follows the vacancies depth profile predicted by Monte Carlo simulation. For higher fluences we observed a reduction in the measured value of S. This result is discussed in terms of both hydrogen loss and structural modifications(increase of disorder at local scale and of the number of graphitic domains) induced in the carbon film by ion implantation.
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16
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Rossi B, Giarola M, Mariotto G, Ambrosi E, Monaco HL. Vibrational and structural investigation of SOUL protein single crystals by using micro-Raman spectroscopy. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Venkatramu V, Giarola M, Mariotto G, Enzo S, Polizzi S, Jayasankar CK, Piccinelli F, Bettinelli M, Speghini A. Nanocrystalline lanthanide-doped Lu3Ga5O12 garnets: interesting materials for light-emitting devices. Nanotechnology 2010; 21:175703. [PMID: 20368677 DOI: 10.1088/0957-4484/21/17/175703] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Nanocrystalline Lu(3)Ga(5)O(12), with average particle sizes of 40 nm, doped with a wide variety of luminescent trivalent lanthanide ions have been prepared using a sol-gel technique. The structural and morphological properties of the powders have been investigated by x-ray powder diffraction, high resolution transmission electron microscopy and Raman spectroscopy. Structural data have been refined and are presented for Pr(3+), Eu(3+), Gd(3+), Ho(3+), Er(3+) and Tm(3+) dopants, while room temperature excited luminescence spectra and emission decay curves of Eu(3+)-, Tm(3+)- and Ho(3+)-doped Lu(3)Ga(5)O(12) nanocrystals have been measured and are discussed. The Eu(3+) emission spectrum shows typical bands due to 5D(0)-->7F(J) (J = 0, 1, 2, 3, 4) transitions and the broadening of these emission bands with the non-exponential behaviour of the decay curves indicates the presence of structural disorder around the lanthanide ions. Lanthanide-doped nanocrystalline Lu(3)Ga(5)O(12) materials show better luminescence intensities compared to Y(2)O(3), Gd(3)Ga(5)O(12) and Y(3)Al(5)O(12) nanocrystalline hosts. Moreover, the upconversion emission intensity in the blue-green region for the Tm(3+)- and Ho(3+)-doped samples shows a significant increase upon 647.5 nm excitation with respect to other common oxide hosts doped with the same lanthanide ions.
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Affiliation(s)
- V Venkatramu
- Department of Physics, Yogi Vemana University, Kadapa, India
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18
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Guella G, Mancini I, Mariotto G, Rossi B, Viliani G. Vibrational analysis as a powerful tool in structure elucidation of polyarsenicals: a DFT-based investigation of arsenicin A. Phys Chem Chem Phys 2009; 11:2420-7. [DOI: 10.1039/b816729j] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Lipinska-kalita KE, Mariotto G, Zanghellini E. Semiconductor Cd(S, Se) quantum dots in glasses: Size determination by low-frequency Raman scattering. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01418639508238545] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - G. Mariotto
- a Dipartimento di Fisica , Universitá di Trento , 38050 , Povo, Trento , Italy
| | - E. Zanghellini
- a Dipartimento di Fisica , Universitá di Trento , 38050 , Povo, Trento , Italy
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Murphy S, Ceballos SF, Mariotto G, Berdunov N, Jordan K, Shvets IV, Mukovskii YM. Atomic scale spin-dependent STM on magnetite using antiferromagnetic STM tips. Microsc Res Tech 2005; 66:85-92. [PMID: 15880500 DOI: 10.1002/jemt.20148] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
STM tips made from antiferromagnetic MnNi have been used to investigate the atomic structure of the (001) and (111) surfaces of Fe3O4. The clean (001) surface displays a ( radical2 x radical2)R45 degrees superlattice, which is attributed to charge-ordering on the surface, where Fe(2+)-Fe2+ and Fe(3+)-Fe3+ dimers can be discriminated. The oxygen-terminated (111) surface is characterized by a hexagonal superlattice with a periodicity of 42 A. Oxygen vacancies are observed in atomically resolved images of this superlattice. In the presence of an external magnetic field of 60 mT, a significant change in the atomic corrugation in the topmost oxygen layer around each of these defects is observed. The results on both (001) and (111) surfaces are discussed in terms of possible spin-polarized effects.
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Affiliation(s)
- S Murphy
- SFI Nanoscience Laboratories, Physics Department, Trinity College, Dublin 2, Ireland.
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Berdunov N, Murphy S, Mariotto G, Shvets IV. Atomically resolved spin-dependent tunneling on the oxygen-terminated Fe3O4(111). Phys Rev Lett 2004; 93:057201. [PMID: 15323727 DOI: 10.1103/physrevlett.93.057201] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2003] [Indexed: 05/24/2023]
Abstract
We employ spin-polarized STM to study the spin-dependent tunneling between a magnetite (111) sample and an antiferromagnetic tip through a vacuum barrier at room temperature. Atomic scale STM images show significant magnetic contrast corresponding to variations in the local surface states induced by oxygen vacancies. The estimated variations in tunneling magnetoresistance of 250% suggest that the spin-transport properties are significantly altered locally by the presence of surface defects.
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Affiliation(s)
- N Berdunov
- SFI Nanoscience Laboratory, Physics Department, Trinity College, Dublin 2, Ireland
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Mariotto G, Montagna M, Viliani G, Campostrini R, Carturan G. Low-frequency Raman scattering in thermally treated silica gels: observation of phonon-fracton crossover. ACTA ACUST UNITED AC 2000. [DOI: 10.1088/0022-3719/21/22/005] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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24
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Rocca F, Kuzmin A, Purans J, Mariotto G. X-ray-absorption spectroscopy of Nd3+-exchanged beta -alumina crystal. Phys Rev B Condens Matter 1996; 53:11444-11450. [PMID: 9982762 DOI: 10.1103/physrevb.53.11444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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25
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Cazzanelli E, Mariotto G, Appetecchi G, Croce F, Scrosati B. Study of ion-molecule interaction in poly(methylmethacrylate) based gel electrolytes by raman spectroscopy. Electrochim Acta 1995. [DOI: 10.1016/0013-4686(95)00198-n] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Bonhomme C, Maquet J, Livage J, Mariotto G. Studies of mercurated derivatives of acetylacetone and ethyl acetoacetate by solid state nuclear magnetic resonance and vibrational spectroscopies. Inorganica Chim Acta 1995. [DOI: 10.1016/0020-1693(94)04194-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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27
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Rocca F, Kuzmin A, Purans J, Mariotto G. X-ray-absorption spectroscopy of a Nd3+-exchanged beta "-alumina crystal. Phys Rev B Condens Matter 1994; 50:6662-6672. [PMID: 9974619 DOI: 10.1103/physrevb.50.6662] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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28
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Rossi F, Mariotto G, Montagna M, Ferrari M. Luminescence of the Cr3+ ion in sodium beta - and beta "-alumina: Site selection by time-resolved fluorescence line narrowing. Phys Rev B Condens Matter 1994; 49:6501-6514. [PMID: 10009367 DOI: 10.1103/physrevb.49.6501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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29
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Luciano M, Bondavalli C, Pegoraro C, Dall'Oglio B, Schiavon L, Mariotto G, Parma A. The study of erectile deficit by Rigiscan. Urologia 1992. [DOI: 10.1177/039156039205901s05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The most widely used tests for a correct diagnosis of organic and psychogenic impotence are nocturnal erection monitoring, penile Doppler and intracavernous injection. 45 patients affected by impotence underwent NPT test while penile Doppler was performed in 32 cases; another 9 patients were given a PGE1 injection followed by real-time monitoring. A Rigiscan monitoring unit for penile rigidity and tumescence measurement was used to perform NPT and real-time FIC. NPT showed organic alteration in 15 cases, psychogenic deficit in 23 and dubious results in 9, (NPT was repeated in 2 cases). Doppler flowmetry was negative in 24 cases while it detected disease in 8. 13 of these 32 patients showed organic disease on NPT, 11 had negative results and 8 cases were considered dubious. Rigiscan nocturnal erection test seems to be the most reliable test for a correct assessment of impotence especially if it is used in combination with intracavernous injection.
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Affiliation(s)
| | | | | | | | | | - G. Mariotto
- Servizio di Sessuologia Clinica - Ospedale Multizonale di Mantova
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30
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Mariotto G, Cazzanelli E, Carturan G, Di Maggio R, Scardi P. Raman and X-ray diffraction study of boehmite gels and their transformation to α- or β-alumina. J SOLID STATE CHEM 1990. [DOI: 10.1016/0022-4596(90)90142-k] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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31
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Cazzanelli E, Fontana A, Mariotto G, Rocca F, Mazzacurati V, Ruocco G, Signorelli G. Raman activity in the beta phase of silver iodide: Low-temperature ordered crystal. Phys Rev B Condens Matter 1988; 38:10883-10893. [PMID: 9945947 DOI: 10.1103/physrevb.38.10883] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Mariotto G, Montagna M, Rossi F. Temperature dependence of homogeneous spectral widths of the 2E-4A2 transition of Cr3+ in silver beta -alumina. Phys Rev B Condens Matter 1988; 38:1072-1076. [PMID: 9946362 DOI: 10.1103/physrevb.38.1072] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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33
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Catti M, Cazzanelli E, Ivaldi G, Mariotto G. Cadmium-ion distribution and motion in beta -alumina: An x-ray-diffraction and Raman-scattering investigation. Phys Rev B Condens Matter 1987; 36:9451-9460. [PMID: 9942838 DOI: 10.1103/physrevb.36.9451] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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34
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35
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Dalvit C, Cerdonio M, Fontana A, Mariotto G, Vitale S, De Young A, Noble RW. Resonance Raman studies of the quaternary structural change in carp deoxy hemoglobin. FEBS Lett 1982; 140:303-6. [PMID: 7084471 DOI: 10.1016/0014-5793(82)80919-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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36
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Villa M, Bjorkstam JL, Mariotto G, Fontana A, Cazzanelli E. Lithium ion distribution and motion in β‐alumina: An NMR and Raman investigation. J Chem Phys 1982. [DOI: 10.1063/1.443383] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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37
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Capozzi V, Mariotto G, Montagna M, Cingolani A, Minafra A. Space-charge-limited currents in GaSe at different temperatures. ACTA ACUST UNITED AC 1977. [DOI: 10.1002/pssa.2210400112] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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