1
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Antonicelli G, Ricci L, Tarraran L, Fraterrigo Garofalo S, Re A, Vasile NS, Verga F, Pirri CF, Menin B, Agostino V. Expanding the product portfolio of carbon dioxide and hydrogen-based gas fermentation with an evolved strain of Clostridium carboxidivorans. Bioresour Technol 2023; 387:129689. [PMID: 37597573 DOI: 10.1016/j.biortech.2023.129689] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/09/2023] [Accepted: 08/15/2023] [Indexed: 08/21/2023]
Abstract
CO2:H2-based gas fermentation with acetogenic Clostridium species are at an early stage of development. This work exploited the Adaptive Laboratory Evolution technique to improve the growth of C. carboxidivorans P7 on CO2 and H2. An adapted strain with decreased growth lag phase and improved biomass production was obtained. Genomic analysis revealed a conserved frameshift mutation in the catalytic subunit of the hexameric hydrogenase gene. The resulted truncated protein variant, most likely lacking its functionality, suggests that other hydrogenases might be more efficient for H2-based growth of this strain. Furthermore, the adapted strain generated hexanol as primary fermentation product. For the first time, hexanol was produced directly from CO2:H2 blend, achieving the highest maximum productivity reported so far via gas fermentation. Traces of valerate, pentanol, eptanol and octanol were observed in the fermentation broth. The adapted strain shows promising to enrich the product spectrum targetable by future gas fermentation processes.
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Affiliation(s)
- G Antonicelli
- Centre for Sustainable Future Technologies, Fondazione Istituto Italiano di Tecnologia, Via Livorno 60, 10144 Turin, Italy; Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy
| | - L Ricci
- Centre for Sustainable Future Technologies, Fondazione Istituto Italiano di Tecnologia, Via Livorno 60, 10144 Turin, Italy
| | - L Tarraran
- Centre for Sustainable Future Technologies, Fondazione Istituto Italiano di Tecnologia, Via Livorno 60, 10144 Turin, Italy; Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy
| | - S Fraterrigo Garofalo
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy
| | - A Re
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy
| | - N S Vasile
- Centre for Sustainable Future Technologies, Fondazione Istituto Italiano di Tecnologia, Via Livorno 60, 10144 Turin, Italy; Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy
| | - F Verga
- Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy
| | - C F Pirri
- Centre for Sustainable Future Technologies, Fondazione Istituto Italiano di Tecnologia, Via Livorno 60, 10144 Turin, Italy; Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy
| | - B Menin
- Centre for Sustainable Future Technologies, Fondazione Istituto Italiano di Tecnologia, Via Livorno 60, 10144 Turin, Italy; Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle Ricerche, Via Alfonso Corti 12, 20133 Milan, Italy
| | - V Agostino
- Centre for Sustainable Future Technologies, Fondazione Istituto Italiano di Tecnologia, Via Livorno 60, 10144 Turin, Italy.
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2
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Channab M, Pirri CF, Angelini A. Funneling Spontaneous Emission into Waveguides via Epsilon-Near-Zero Metamaterials. Nanomaterials (Basel) 2021; 11:nano11061410. [PMID: 34071754 PMCID: PMC8227091 DOI: 10.3390/nano11061410] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/16/2021] [Accepted: 05/24/2021] [Indexed: 11/16/2022]
Abstract
In this work, we discuss the use of epsilon-near-zero (ENZ) metamaterials to efficiently couple light radiated by a dipolar source to an in-plane waveguide. We exploit both enhanced and directional emission provided by ENZ metamaterials to optimize the injection of light into the waveguide by tuning the metal fill factor. We show that a net increase in intensity injected into the waveguide with respect to the total power radiated by the isolated dipole can be achieved in experimentally feasible conditions. We think the proposed system may open up new opportunities for several optical applications and integrated technologies, especially for those limited by outcoupling efficiency and emission rate.
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Affiliation(s)
- M. Channab
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy;
- Advanced Materials and Life Sciences, Istituto Nazionale di Ricerca Metrologica (INRiM), Strada delle Cacce 91, 10135 Turin, Italy
- Correspondence: (M.C.); (A.A.)
| | - C. F. Pirri
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy;
| | - A. Angelini
- Advanced Materials and Life Sciences, Istituto Nazionale di Ricerca Metrologica (INRiM), Strada delle Cacce 91, 10135 Turin, Italy
- Correspondence: (M.C.); (A.A.)
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3
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Lanzio V, Lorenzon M, Dhuey S, Pirri CF, Lamberti A, Cabrini S. Scalable nanophotonic neural probes for multicolor and on-demand light delivery in brain tissue. Nanotechnology 2021; 32:265201. [PMID: 33725677 DOI: 10.1088/1361-6528/abef2a] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
Neural probes arein vivobrain-invasive devices that record and manipulate neural circuits using electricity, light, or drugs. The capability to shine distinct wavelengths and control their respective output locations for activation or deactivation of specific groups of neurons is desirable but remains unachieved. Here, we discuss our probe's capability to deliver two independently controllable wavelengths (450 and 655 nm) in the location(s) of interest using nanophotonic directional couplers and ring resonators. These nanophotonics are scalable to dozens of outputs without significantly increasing the device's lateral dimensions. Furthermore, they are entirely passive and thus do not require electrical input that results in heat generation. Besides, we integrate a high number of electrodes for a simultaneous neural activity readout. Thus, we overcome the challenges associated with multicolor illumination for neural devices by exploiting the capability of miniaturizable, passive probes to deliver two different frequencies in several areas of interest. These devices open the path towards investigating thein vivoelectrical signal propagation under the individual or simultaneous activation or inhibition of distinct brain regions.
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Affiliation(s)
- V Lanzio
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States of America
- Department of Applied Science and Technology, Politecnico di Torino, Torino, I-10129, Italy
| | - M Lorenzon
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States of America
| | - S Dhuey
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States of America
| | - C F Pirri
- Department of Applied Science and Technology, Politecnico di Torino, Torino, I-10129, Italy
- Istituto Italiano di Tecnologia, Center for Sustainable Future Technologies, Corso Trento, 21, I-10129 Torino, Italy
| | - A Lamberti
- Department of Applied Science and Technology, Politecnico di Torino, Torino, I-10129, Italy
- Istituto Italiano di Tecnologia, Center for Sustainable Future Technologies, Corso Trento, 21, I-10129 Torino, Italy
| | - S Cabrini
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States of America
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4
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Spigarelli L, Vasile NS, Pirri CF, Canavese G. Numerical study of the effect of channel aspect ratio on particle focusing in acoustophoretic devices. Sci Rep 2020; 10:19447. [PMID: 33173108 PMCID: PMC7655847 DOI: 10.1038/s41598-020-76367-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 10/27/2020] [Indexed: 11/18/2022] Open
Abstract
Acoustophoretic microfluidic devices are promising non-contact and high-throughput tools for particle manipulation. Although the effectiveness of this technique has been widely demonstrated for applications based on micrometer-sized particles, the manipulation and focusing of sub-micrometer ones is challenging due to the presence of acoustic streaming. In this article, our study has the aim to investigate and understand which geometrical parameters could be changed to limit the acoustic streaming effect. We numerically study the well-known rectangular cross section of a microfluidic channel and perform a parametric study of the aspect ratio for several particle sizes. The efficiency of the focusing, is explored for different sized particles in order to identify a trend for which the acoustic streaming does not drastically influence the focusing motion of the particles. The possibility to efficiently separate different solid components in liquid suspensions, i.e. the whole blood, is crucial for all applications that require a purified medium such as plasmapheresis or an increase of the concentration of specific subpopulation as the outcome, such as proteomics, cancer biomarker detections and extracellular vesicles separation.
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Affiliation(s)
- L Spigarelli
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Turin, Italy.
| | - N S Vasile
- SynBio Lab, Italian Institute of Technology, Via Livorno 60, 10144, Turin, Italy
| | - C F Pirri
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Turin, Italy.,Chilab - Materials and Microsystems Laboratory - DISAT Politecnico di Torino, Via Lungo Piazza d'Armi 6, 10034, Chivasso (Turin), Italy
| | - G Canavese
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Turin, Italy. .,Chilab - Materials and Microsystems Laboratory - DISAT Politecnico di Torino, Via Lungo Piazza d'Armi 6, 10034, Chivasso (Turin), Italy.
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5
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Ferrarese Lupi F, Murataj I, Celegato F, Angelini A, Frascella F, Chiarcos R, Antonioli D, Gianotti V, Tiberto P, Pirri CF, Boarino L, Laus M. Tailored and Guided Dewetting of Block Copolymer/Homopolymer Blends. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- F. Ferrarese Lupi
- Nanoscience and Materials Division, Istituto Nazionale Ricerca Metrologica, Strada Delle Cacce 91, 10135 Torino, Italy
| | - I. Murataj
- Nanoscience and Materials Division, Istituto Nazionale Ricerca Metrologica, Strada Delle Cacce 91, 10135 Torino, Italy
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Corso Duca Degli Abruzzi, 24, 10129 Torino, Italy
| | - F. Celegato
- Nanoscience and Materials Division, Istituto Nazionale Ricerca Metrologica, Strada Delle Cacce 91, 10135 Torino, Italy
| | - A. Angelini
- Nanoscience and Materials Division, Istituto Nazionale Ricerca Metrologica, Strada Delle Cacce 91, 10135 Torino, Italy
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Corso Duca Degli Abruzzi, 24, 10129 Torino, Italy
| | - F. Frascella
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Corso Duca Degli Abruzzi, 24, 10129 Torino, Italy
| | - R. Chiarcos
- Dipartimento di Scienze e Innovazione Tecnologica (DISIT), Università Del Piemonte Orientale “A. Avogadro”, Viale T. Michel 11, 15121 Alessandria, Italy
| | - D. Antonioli
- Dipartimento di Scienze e Innovazione Tecnologica (DISIT), Università Del Piemonte Orientale “A. Avogadro”, Viale T. Michel 11, 15121 Alessandria, Italy
| | - V. Gianotti
- Dipartimento di Scienze e Innovazione Tecnologica (DISIT), Università Del Piemonte Orientale “A. Avogadro”, Viale T. Michel 11, 15121 Alessandria, Italy
| | - P. Tiberto
- Nanoscience and Materials Division, Istituto Nazionale Ricerca Metrologica, Strada Delle Cacce 91, 10135 Torino, Italy
| | - C. F. Pirri
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Corso Duca Degli Abruzzi, 24, 10129 Torino, Italy
| | - L. Boarino
- Nanoscience and Materials Division, Istituto Nazionale Ricerca Metrologica, Strada Delle Cacce 91, 10135 Torino, Italy
| | - M. Laus
- Dipartimento di Scienze e Innovazione Tecnologica (DISIT), Università Del Piemonte Orientale “A. Avogadro”, Viale T. Michel 11, 15121 Alessandria, Italy
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6
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Conti D, Laurenti M, Porro S, Giovinazzo C, Bianco S, Fra V, Chiolerio A, Pirri CF, Milano G, Ricciardi C. Resistive switching in sub-micrometric ZnO polycrystalline films. Nanotechnology 2019; 30:065707. [PMID: 30523900 DOI: 10.1088/1361-6528/aaf261] [Citation(s) in RCA: 4] [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: 06/09/2023]
Abstract
Resistive switching (RS) devices are considered as the most promising alternative to conventional random access memories. They interestingly offer effective properties in terms of device scalability, low power-consumption, fast read/write operations, high endurance and state retention. Moreover, neuromorphic circuits and synapse-like devices are envisaged with RS modeled as memristors, opening the route toward beyond-Von Neumann computing architectures and intelligent systems. This work investigates how the RS properties of zinc oxide thin films are related to both sputtering deposition process and device configuration, i.e. valence change memory and electrochemical metallization memory (ECM). Different devices, with an oxide thickness ranging from 50-250 nm, are fabricated and deeply characterized. The electrical characterization evidences that, differently from typical nanoscale amorphous oxides employed for resistive RAMs (HfO x , WO x , etc), sub-micrometric thicknesses of polycrystalline ZnO layers with ECM configuration are needed to achieve the most reliable devices. The obtained results are deeply discussed, correlating the RS mechanism to material nanostructure.
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Affiliation(s)
- D Conti
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, I-10129 Torino, Italy
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7
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Delmondo L, Muñoz-Tabares JA, Sacco A, Garino N, Massaglia G, Castellino M, Salvador GP, Pirri CF, Quaglio M, Chiodoni A. Thermal evolution of MnxOy nanofibres as catalysts for the oxygen reduction reaction. Phys Chem Chem Phys 2017; 19:28781-28787. [DOI: 10.1039/c7cp05091g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The present study shows how, starting from green and low-cost precursors, nanostructured manganese oxides with good catalytic efficiencies for the oxygen reduction reaction can be fabricated through the electrospinning technique. The role of the crystalline phase and morphological features, on the electro-catalytic behaviour, is discussed.
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Affiliation(s)
- L. Delmondo
- Department of Applied Science and Technology – DISAT
- Politecnico di Torino
- 10129 Torino
- Italy
| | - J. A. Muñoz-Tabares
- Center for Sustainable Future Technologies @PoliTo
- Istituto Italiano di Tecnologia
- 10129 Torino
- Italy
| | - A. Sacco
- Center for Sustainable Future Technologies @PoliTo
- Istituto Italiano di Tecnologia
- 10129 Torino
- Italy
| | - N. Garino
- Center for Sustainable Future Technologies @PoliTo
- Istituto Italiano di Tecnologia
- 10129 Torino
- Italy
| | - G. Massaglia
- Department of Applied Science and Technology – DISAT
- Politecnico di Torino
- 10129 Torino
- Italy
- Center for Sustainable Future Technologies @PoliTo
| | - M. Castellino
- Center for Sustainable Future Technologies @PoliTo
- Istituto Italiano di Tecnologia
- 10129 Torino
- Italy
| | - G. P. Salvador
- Center for Sustainable Future Technologies @PoliTo
- Istituto Italiano di Tecnologia
- 10129 Torino
- Italy
| | - C. F. Pirri
- Department of Applied Science and Technology – DISAT
- Politecnico di Torino
- 10129 Torino
- Italy
- Center for Sustainable Future Technologies @PoliTo
| | - M. Quaglio
- Center for Sustainable Future Technologies @PoliTo
- Istituto Italiano di Tecnologia
- 10129 Torino
- Italy
| | - A. Chiodoni
- Center for Sustainable Future Technologies @PoliTo
- Istituto Italiano di Tecnologia
- 10129 Torino
- Italy
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8
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Muñoz-Tabares JA, Bejtka K, Lamberti A, Garino N, Bianco S, Quaglio M, Pirri CF, Chiodoni A. Nanostructural evolution of one-dimensional BaTiO₃ structures by hydrothermal conversion of vertically aligned TiO₂ nanotubes. Nanoscale 2016; 8:6866-6876. [PMID: 26955909 DOI: 10.1039/c5nr07283b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The use of TiO2 nanotube (NT) arrays as templates for hydrothermal conversion of one-dimensional barium titanate (BaTiO3) structures is considered a promising synthesis approach, even though the formation mechanisms are not yet fully understood. Herein we report a nanostructural study by means of XRD and (HR)TEM of high aspect ratio TiO2-NTs hydrothermally converted into BaTiO3. The nanostructure shows two different and well-defined regions: at the top the conversion involves complete dissolution of NTs and subsequent precipitation of BaTiO3 crystals by homogeneous nucleation, followed by the growth of dendritic structures by aggregation and oriented attachment mechanisms. Instead, at the bottom, the low liquid/solid ratio, due to the limited amount of Ba solution that infiltrates the NTs, leads to the rapid crystallization of such a solution into BaTiO3, thus allowing the NTs to act as a template for the formation of highly oriented one-dimensional nanostructures. The in-depth analysis of the structural transformations that take place during the formation of the rod-like arrays of BaTiO3 could help elucidate the conversion mechanism, thus paving the way for the optimization of the synthesis process in view of new applications in energy harvesting devices, where easy and low temperature processing, controlled composition, morphology and functional properties are required.
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Affiliation(s)
- J A Muñoz-Tabares
- Center for Space Human Robotics (CSHR), Istituto Italiano di Tecnologia, Torino 10129, Italy.
| | - K Bejtka
- Center for Space Human Robotics (CSHR), Istituto Italiano di Tecnologia, Torino 10129, Italy.
| | - A Lamberti
- Applied Science and Technology (DISAT), Politecnico di Torino, Torino 10129, Italy
| | - N Garino
- Center for Space Human Robotics (CSHR), Istituto Italiano di Tecnologia, Torino 10129, Italy.
| | - S Bianco
- Applied Science and Technology (DISAT), Politecnico di Torino, Torino 10129, Italy
| | - M Quaglio
- Center for Space Human Robotics (CSHR), Istituto Italiano di Tecnologia, Torino 10129, Italy.
| | - C F Pirri
- Center for Space Human Robotics (CSHR), Istituto Italiano di Tecnologia, Torino 10129, Italy. and Applied Science and Technology (DISAT), Politecnico di Torino, Torino 10129, Italy
| | - A Chiodoni
- Center for Space Human Robotics (CSHR), Istituto Italiano di Tecnologia, Torino 10129, Italy.
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9
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Frascella F, Ricciardi S, Pasquardini L, Potrich C, Angelini A, Chiadò A, Pederzolli C, De Leo N, Rivolo P, Pirri CF, Descrovi E. Enhanced fluorescence detection of miRNA-16 on a photonic crystal. Analyst 2016; 140:5459-63. [PMID: 26140547 DOI: 10.1039/c5an00889a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a novel sensing method for fluorescence-labelled microRNAs (miRNAs) spotted on an all-dielectric photonic structure. Such a photonic structure provides an enhanced excitation and a directional beaming of the emitted fluorescence, resulting in a significant improvement of the overall signal collected. As a result, the Limit of Detection (LoD) is demonstrated to decrease by a factor of about 50. A compact read-out system allows a wide-field imaging-based detection, with little or no optical alignment issues, which makes this approach particularly interesting for further development for example in microarray-type bioassays.
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Affiliation(s)
- F Frascella
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy.
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10
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Chiolerio A, Roppolo I, Bejtka K, Asvarov A, Pirri CF. Resistive hysteresis in flexible nanocomposites and colloidal suspensions: interfacial coupling mechanism unveiled. RSC Adv 2016. [DOI: 10.1039/c6ra10503c] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The interaction between ethoxyl groups of acrylate polymers and oxygen vacancies on the surface of ZnO nanoparticles is shown to produce resistive hysteresis according to a new interfacial phenomenon called interfacial coupling mechanism.
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Affiliation(s)
- A. Chiolerio
- Center for Space Human Robotics
- Istituto Italiano di Tecnologia
- 10129 Torino
- Italy
| | - I. Roppolo
- Center for Space Human Robotics
- Istituto Italiano di Tecnologia
- 10129 Torino
- Italy
| | - K. Bejtka
- Center for Space Human Robotics
- Istituto Italiano di Tecnologia
- 10129 Torino
- Italy
| | - A. Asvarov
- Center for Space Human Robotics
- Istituto Italiano di Tecnologia
- 10129 Torino
- Italy
- Institute of Physics
| | - C. F. Pirri
- Center for Space Human Robotics
- Istituto Italiano di Tecnologia
- 10129 Torino
- Italy
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11
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Laurenti M, Canavese G, Stassi S, Fontana M, Castellino M, Pirri CF, Cauda V. A porous nanobranched structure: an effective way to improve piezoelectricity in sputtered ZnO thin films. RSC Adv 2016. [DOI: 10.1039/c6ra17319e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
ZnO nanomaterials are gaining lots of attention due to their biocompatible nature coupled with promising piezoelectric properties, envisioning a new generation of lead-free smart materials.
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Affiliation(s)
- M. Laurenti
- Department of Applied Science and Technology
- Politecnico di Torino
- 10129 Turin
- Italy
| | - G. Canavese
- Department of Applied Science and Technology
- Politecnico di Torino
- 10129 Turin
- Italy
| | - S. Stassi
- Department of Applied Science and Technology
- Politecnico di Torino
- 10129 Turin
- Italy
| | - M. Fontana
- Department of Applied Science and Technology
- Politecnico di Torino
- 10129 Turin
- Italy
| | - M. Castellino
- Center for Sustainable Futures@POLITO
- Istituto Italiano di Tecnologia
- 10129 Turin
- Italy
| | - C. F. Pirri
- Department of Applied Science and Technology
- Politecnico di Torino
- 10129 Turin
- Italy
- Center for Sustainable Futures@POLITO
| | - V. Cauda
- Department of Applied Science and Technology
- Politecnico di Torino
- 10129 Turin
- Italy
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12
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Vaghi V, Potrich C, Pasquardini L, Lunelli L, Vanzetti L, Ebranati E, Lai A, Zehender G, Mombello D, Cocuzza M, Pirri CF, Pederzolli C. On-chip purification and detection of hepatitis C virus RNA from human plasma. Biophys Chem 2015; 208:54-61. [PMID: 26091724 DOI: 10.1016/j.bpc.2015.06.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 05/29/2015] [Accepted: 06/08/2015] [Indexed: 02/05/2023]
Abstract
Hepatitis C virus (HCV) is one of the main causes of chronic liver disease worldwide. The diagnosis and monitoring of HCV infection is a crucial need in the clinical management. The conventional diagnostic technologies are challenged when trying to address molecular diagnostics, especially because they require a complex and time-consuming sample preparation phase. Here, a new concept based on surface functionalization was applied to viral RNA purification: first of all polydimethylsiloxane (PDMS) flat surfaces were modified to hold RNA adsorption. After a careful chemical and morphological analysis of the modified surfaces, the functionalization protocols giving the best RNA adsorbing surfaces were applied to PDMS microdevices. The functionalized microdevices were then used for RNA purification from HCV infected human plasma samples. RNA purification and RT were successfully performed in the same microdevice chamber, saving time of analysis, reagents, and labor. The PCR protocol for HCV cDNA amplification was also implemented in the microdevice, demonstrating that the entire process of HCV analysis, from plasma to molecular readout, could be performed on-chip. Not only HCV but also other microdevice-based viral RNA detection could therefore result in a successful Point-of-Care (POC) diagnostics for resource-limited settings.
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Affiliation(s)
- V Vaghi
- Fondazione Bruno Kessler, Laboratory of Biomolecular Sequence and Structure Analysis for Health, Via Sommarive 18, I-38123, Povo, Trento, Italy
| | - C Potrich
- Fondazione Bruno Kessler, Laboratory of Biomolecular Sequence and Structure Analysis for Health, Via Sommarive 18, I-38123, Povo, Trento, Italy; CNR - Consiglio Nazionale delle Ricerche, Istituto di Biofisica, Via alla Cascata 56/C, I-38123, Povo, Trento, Italy.
| | - L Pasquardini
- Fondazione Bruno Kessler, Laboratory of Biomolecular Sequence and Structure Analysis for Health, Via Sommarive 18, I-38123, Povo, Trento, Italy
| | - L Lunelli
- Fondazione Bruno Kessler, Laboratory of Biomolecular Sequence and Structure Analysis for Health, Via Sommarive 18, I-38123, Povo, Trento, Italy; CNR - Consiglio Nazionale delle Ricerche, Istituto di Biofisica, Via alla Cascata 56/C, I-38123, Povo, Trento, Italy
| | - L Vanzetti
- Fondazione Bruno Kessler, Center for Materials and Microsystem (CMM), Via Sommarive 18, I-38123, Povo, Trento, Italy
| | - E Ebranati
- Department of Biomedical and Clinical Sciences "Luigi Sacco", Section of Infectious Diseases and Immunopathology, University of Milan, Milano, Italy
| | - A Lai
- Department of Biomedical and Clinical Sciences "Luigi Sacco", Section of Infectious Diseases and Immunopathology, University of Milan, Milano, Italy
| | - G Zehender
- Department of Biomedical and Clinical Sciences "Luigi Sacco", Section of Infectious Diseases and Immunopathology, University of Milan, Milano, Italy
| | - D Mombello
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino I-10129, Italy
| | - M Cocuzza
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino I-10129, Italy; CNR-IMEM, Parco Area delle Scienze 37a, 43124 Parma, Italy
| | - C F Pirri
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino I-10129, Italy; Center for Space Human Robotics@PoliTo, Istituto Italiano di Tecnologia, C. so Trento 21, 10129 Torino, Italy
| | - C Pederzolli
- Fondazione Bruno Kessler, Laboratory of Biomolecular Sequence and Structure Analysis for Health, Via Sommarive 18, I-38123, Povo, Trento, Italy
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Laurenti M, Stassi S, Lorenzoni M, Fontana M, Canavese G, Cauda V, Pirri CF. Evaluation of the piezoelectric properties and voltage generation of flexible zinc oxide thin films. Nanotechnology 2015; 26:215704. [PMID: 25943118 DOI: 10.1088/0957-4484/26/21/215704] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Local piezoresponse and piezoelectric output voltage were evaluated on ZnO thin films deposited by radio-frequency magnetron sputtering on hard Si/Ti/Au and flexible Cu-coated polyimide substrates. Three different thicknesses of ZnO films were studied (285 nm, 710 nm, and 1380 nm), focusing on characteristics like crystallinity, grain size, surface roughness, and morphology. Independent of the nature of the metal layer and the substrate, our results show that thicker films presented a higher level of crystallinity and a preferential orientation along the c-axis direction, as well as a lower density of grain boundaries and larger crystal sizes. The improvement of the crystalline structure of the material directly enhances its piezoelectric properties, as confirmed by the local characterizations performed by piezoresponse force microscopy and by the evaluation of the output voltage generation under the application of a periodical mechanical deformation on the whole film. In particular, the highest value of the d33 coefficient obtained (8 pm V(-1)) and the highest generated output voltage (0.746 V) belong to the thickest films on hard and flexible substrates, respectively. These results envision the use of ZnO thin films--particularly on flexible substrates--as conformable, reliable, and efficient active materials for use in nanosensing, actuation, and piezoelectric nanogenerators.
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Affiliation(s)
- M Laurenti
- Center for Space Human Robotics, Istituto Italiano di Tecnologia, C.so Trento 21, 10129 Turin, Italy. Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, I-10129 Turin, Italy
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Roppolo I, Chiappone A, Boggione L, Castellino M, Bejtka K, Pirri CF, Sangermano M, Chiolerio A. Self-standing polymer-functionalized reduced graphene oxide papers obtained via a UV-process. RSC Adv 2015. [DOI: 10.1039/c5ra21521h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The mechanical and electrical properties of novel polymer-grafted RGO papers, synthesized via a two-step UV-induced method, were studied.
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Affiliation(s)
- I. Roppolo
- Istituto Italiano di Tecnologia (IIT)
- Center for Space Human Robotics@Polito
- 10129 Torino
- Italy
| | - A. Chiappone
- Istituto Italiano di Tecnologia (IIT)
- Center for Space Human Robotics@Polito
- 10129 Torino
- Italy
| | - L. Boggione
- Department of Applied Science and Technology – DISAT
- Politecnico di Torino
- 10129 Torino
- Italy
| | - M. Castellino
- Istituto Italiano di Tecnologia (IIT)
- Center for Space Human Robotics@Polito
- 10129 Torino
- Italy
| | - K. Bejtka
- Istituto Italiano di Tecnologia (IIT)
- Center for Space Human Robotics@Polito
- 10129 Torino
- Italy
| | - C. F. Pirri
- Istituto Italiano di Tecnologia (IIT)
- Center for Space Human Robotics@Polito
- 10129 Torino
- Italy
- Department of Applied Science and Technology – DISAT
| | - M. Sangermano
- Department of Applied Science and Technology – DISAT
- Politecnico di Torino
- 10129 Torino
- Italy
| | - A. Chiolerio
- Istituto Italiano di Tecnologia (IIT)
- Center for Space Human Robotics@Polito
- 10129 Torino
- Italy
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Rajteri M, Rastello ML, Monticone E, Steni R, Lacquaniti V, Giorgis F, Pirri CF. Antireflection coating for superconducting tunnel junction photodetectors in the visible range. ACTA ACUST UNITED AC 2009. [DOI: 10.1080/13642810008209761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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)
| | - M. L. Rastello
- a Istituto Elettrotecnico Nazionale Galileo Ferraris , Strada delle Cacce 91, 10135 , Torino , Italy
| | - E. Monticone
- a Istituto Elettrotecnico Nazionale Galileo Ferraris , Strada delle Cacce 91, 10135 , Torino , Italy
| | - R. Steni
- a Istituto Elettrotecnico Nazionale Galileo Ferraris , Strada delle Cacce 91, 10135 , Torino , Italy
| | - V. Lacquaniti
- a Istituto Elettrotecnico Nazionale Galileo Ferraris , Strada delle Cacce 91, 10135 , Torino , Italy
| | - F. Giorgis
- b Dipartimento di Fisica , Politecnico di Torino , Corso Duca degli Abruzzi 24, 10129 , Torino , Italy
| | - C. F. Pirri
- b Dipartimento di Fisica , Politecnico di Torino , Corso Duca degli Abruzzi 24, 10129 , Torino , Italy
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Giorgis F, Giuliani F, Pirri CF, Tresso E, Summonte C, Rizzoli R, Galloni R, Desalvo A, Rava P. Optical, structural and electrical properties of device-quality hydrogenated amorphous silicon-nitrogen films deposited by plasma-enhanced chemical vapour deposition. ACTA ACUST UNITED AC 2009. [DOI: 10.1080/13642819808206395] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [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)
- F. Giorgis
- a Dipartimento di Fisica ed , Unità Istituto Nazionale per la Fisica della Materia , Politecnico di Torino, C.so Duca degli Abruzzi 24, 1-10129 , Torino , Italy
| | - F. Giuliani
- a Dipartimento di Fisica ed , Unità Istituto Nazionale per la Fisica della Materia , Politecnico di Torino, C.so Duca degli Abruzzi 24, 1-10129 , Torino , Italy
| | - C. F. Pirri
- a Dipartimento di Fisica ed , Unità Istituto Nazionale per la Fisica della Materia , Politecnico di Torino, C.so Duca degli Abruzzi 24, 1-10129 , Torino , Italy
| | - E. Tresso
- a Dipartimento di Fisica ed , Unità Istituto Nazionale per la Fisica della Materia , Politecnico di Torino, C.so Duca degli Abruzzi 24, 1-10129 , Torino , Italy
| | - C. Summonte
- b Consiglio Nazionale delle Ricerche, Istituto LAMEL , Via Gobetti 101, I-40129 , Bologna , Italy
| | - R. Rizzoli
- b Consiglio Nazionale delle Ricerche, Istituto LAMEL , Via Gobetti 101, I-40129 , Bologna , Italy
| | - R. Galloni
- b Consiglio Nazionale delle Ricerche, Istituto LAMEL , Via Gobetti 101, I-40129 , Bologna , Italy
| | - A. Desalvo
- c Dipartimento di Chimica Applicata e Science dei Materiali, Facoltà di Ingegneria , Università di Bologna , Viale Risorgimento 2, 1-40136 , Bologna , Italy
| | - P. Rava
- d Elettrorava SpA , Via Don Sapino 176, 1-10040 , Savonera, Torino , Italy
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Demichelis F, Giorgis F, Pirri CF. Compositional and structural analysis of hydrogenated amorphous silicon—nitrogen alloys prepared by plasma-enhanced chemical vapour deposition. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01418639608240333] [Citation(s) in RCA: 17] [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)
- F. Demichelis
- a Dipartimento di Fisica ed Unita Infm del Politecnico di Torino , C. so Duca degli Abruzzi 24, 10129 , Torino , Italy
| | - F. Giorgis
- a Dipartimento di Fisica ed Unita Infm del Politecnico di Torino , C. so Duca degli Abruzzi 24, 10129 , Torino , Italy
| | - C. F. Pirri
- a Dipartimento di Fisica ed Unita Infm del Politecnico di Torino , C. so Duca degli Abruzzi 24, 10129 , Torino , Italy
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Demichelis F, Giorgis F, Pirri CF, Tresso E. Bonding structure and defects in wide band gap a-Si1−xCx:H films deposited in Hz diluted SiH4+ CH4gas mixtures. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01418639508243603] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [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)
- F. Demichelis
- a Dipartimento di Fisica , Politecnico di Torino, Corso Duca degli Abruzzi , 24-10129 , Torino , Italy
| | - F. Giorgis
- a Dipartimento di Fisica , Politecnico di Torino, Corso Duca degli Abruzzi , 24-10129 , Torino , Italy
| | - C. F. Pirri
- a Dipartimento di Fisica , Politecnico di Torino, Corso Duca degli Abruzzi , 24-10129 , Torino , Italy
| | - E. Tresso
- a Dipartimento di Fisica , Politecnico di Torino, Corso Duca degli Abruzzi , 24-10129 , Torino , Italy
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Demichelis F, Crovini G, Pirri CF, Tresso E, Galloni R, Rizzoli R, Summonte C, Zignani F, Rava P, Madan A. The influence of hydrogen dilution on the optoelectronic and structural properties of hydrogenated amorphous silicon carbide films. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01418639408240116] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [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)
- F. Demichelis
- a Dipartimento di Fisica , Politecnico , Torino , Italy
| | - G. Crovini
- a Dipartimento di Fisica , Politecnico , Torino , Italy
| | - C. F. Pirri
- a Dipartimento di Fisica , Politecnico , Torino , Italy
| | - E. Tresso
- a Dipartimento di Fisica , Politecnico , Torino , Italy
| | - R. Galloni
- b Istituto di Chimica e Tecnologia dei Materiali e dei Componente per L'Elettronica (LAMEL), Consiglio Nazionale delle Ricerche , Bologna , Italy
| | - R. Rizzoli
- b Istituto di Chimica e Tecnologia dei Materiali e dei Componente per L'Elettronica (LAMEL), Consiglio Nazionale delle Ricerche , Bologna , Italy
| | - C. Summonte
- b Istituto di Chimica e Tecnologia dei Materiali e dei Componente per L'Elettronica (LAMEL), Consiglio Nazionale delle Ricerche , Bologna , Italy
| | - F. Zignani
- c Dipartimento di Chimica Applicata e scienza dei Materiali , Facolta di Ingegneria , Bologna , Italy
| | - P. Rava
- d Elettrorava , Torino , Italy
| | - A. Madan
- e MVSystems Inc. , Golden , Colorado , 80401 , USA
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Demtchelis F, Pirri CF, Tresso E. Degree of crystallinity and electrical transport properties of microcrystalline silicon-carbon alloys. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/13642819308220136] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [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)
- F. Demtchelis
- a Dipartimento di Fisica del Politecnico di Torino , Unitá Istituto Nazionale di Fisica della Materia di Torino Politecnico , Corso Duca degli Abruzzi 24, 10129 , Torino , Italy
| | - C. F. Pirri
- a Dipartimento di Fisica del Politecnico di Torino , Unitá Istituto Nazionale di Fisica della Materia di Torino Politecnico , Corso Duca degli Abruzzi 24, 10129 , Torino , Italy
| | - E. Tresso
- a Dipartimento di Fisica del Politecnico di Torino , Unitá Istituto Nazionale di Fisica della Materia di Torino Politecnico , Corso Duca degli Abruzzi 24, 10129 , Torino , Italy
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Demichelis F, Pirri CF, Tresso E, Benedetto G. Influence of substrate temperature and annealing treatments on the properties of glow-discharge and sputtered a-SixC1−x:H films. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/13642819108205555] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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)
- F. Demichelis
- a Dipartimento di Fisica , Politecnico di Torino , Corso Duca degli Abruzzi 27, 10129, Torino , Italy
| | - C. F. Pirri
- a Dipartimento di Fisica , Politecnico di Torino , Corso Duca degli Abruzzi 27, 10129, Torino , Italy
| | - E. Tresso
- a Dipartimento di Fisica , Politecnico di Torino , Corso Duca degli Abruzzi 27, 10129, Torino , Italy
| | - G. Benedetto
- b IEN Galileo Ferraris , Str. delle Cacce 25, 10135, Torino , Italy
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Demichelis F, Crovini G, Pirri CF, Tresso E. Infrared vibrational spectra of hydrogenated amorphous and microcrystalline silicon-carbon alloys. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/13642819308215290] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [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)
- F. Demichelis
- a Dip. Fisica-Politecnico of Torino C.so Duca degli Abruzzi 24 , 10129 , Torino , Italy
| | - G. Crovini
- a Dip. Fisica-Politecnico of Torino C.so Duca degli Abruzzi 24 , 10129 , Torino , Italy
| | - C. F. Pirri
- a Dip. Fisica-Politecnico of Torino C.so Duca degli Abruzzi 24 , 10129 , Torino , Italy
| | - E. Tresso
- a Dip. Fisica-Politecnico of Torino C.so Duca degli Abruzzi 24 , 10129 , Torino , Italy
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Pirri CF, Porro S, Ferrero S, Celasco E, Guastella S, Scaltrito L, Yakimova R, Syväjärvi M, Ciechonski RR, De Angelis S, Crippa D. Growth, morphological and structural characterization of silicon carbide epilayers for power electronic devices applications. Cryst Res Technol 2005. [DOI: 10.1002/crat.200410468] [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: 11/05/2022]
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Demichelis F, Giorgis F, Pirri CF, Tresso E. Compositional and structural properties of hydrogenated amorphous silicon-carbon films prepared by ultra-high-vacuum plasma-enhanced chemical vapour deposition with different carbon sources. ACTA ACUST UNITED AC 1995. [DOI: 10.1080/01418619508239944] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Dasgupta D, Demichelis F, Pirri CF, Tagliaferro A. pi bands and gap states from optical absorption and electron-spin-resonance studies on amorphous carbon and amorphous hydrogenated carbon films. Phys Rev B Condens Matter 1991; 43:2131-2135. [PMID: 9997482 DOI: 10.1103/physrevb.43.2131] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.6] [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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