1
|
Ditalia Tchernij S, Lühmann T, Corte E, Sardi F, Picollo F, Traina P, Brajković M, Crnjac A, Pezzagna S, Pastuović Ž, Degiovanni IP, Moreva E, Aprà P, Olivero P, Siketić Z, Meijer J, Genovese M, Forneris J. Fluorine-based color centers in diamond. Sci Rep 2020; 10:21537. [PMID: 33298995 PMCID: PMC7726554 DOI: 10.1038/s41598-020-78436-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 07/31/2020] [Accepted: 11/05/2020] [Indexed: 11/22/2022] Open
Abstract
We report on the creation and characterization of the luminescence properties of high-purity diamond substrates upon F ion implantation and subsequent thermal annealing. Their room-temperature photoluminescence emission consists of a weak emission line at 558 nm and of intense bands in the 600–750 nm spectral range. Characterization at liquid He temperature reveals the presence of a structured set of lines in the 600–670 nm spectral range. We discuss the dependence of the emission properties of F-related optical centers on different experimental parameters such as the operating temperature and the excitation wavelength. The correlation of the emission intensity with F implantation fluence, and the exclusive observation of the afore-mentioned spectral features in F-implanted and annealed samples provides a strong indication that the observed emission features are related to a stable F-containing defective complex in the diamond lattice.
Collapse
Affiliation(s)
- S Ditalia Tchernij
- Physics Department, University of Torino, 10125, Turin, Italy.,Istituto Nazionale Di Fisica Nucleare (INFN), Sezione Di Torino, 10125, Turin, Italy.,Istituto Nazionale Di Ricerca Metrologica (INRiM), 10135, Turin, Italy
| | - T Lühmann
- Applied Quantum Systems, Felix-Bloch Institute for Solid-State Physics, Universität Leipzig, 04103, Leipzig, Germany
| | - E Corte
- Physics Department, University of Torino, 10125, Turin, Italy.,Istituto Nazionale Di Fisica Nucleare (INFN), Sezione Di Torino, 10125, Turin, Italy
| | - F Sardi
- Physics Department, University of Torino, 10125, Turin, Italy
| | - F Picollo
- Physics Department, University of Torino, 10125, Turin, Italy.,Istituto Nazionale Di Fisica Nucleare (INFN), Sezione Di Torino, 10125, Turin, Italy
| | - P Traina
- Istituto Nazionale Di Ricerca Metrologica (INRiM), 10135, Turin, Italy
| | - M Brajković
- Laboratory for Ion Beam Interactions, Ruđer Bošković Institute, 10000, Zagreb, Croatia
| | - A Crnjac
- Laboratory for Ion Beam Interactions, Ruđer Bošković Institute, 10000, Zagreb, Croatia
| | - S Pezzagna
- Applied Quantum Systems, Felix-Bloch Institute for Solid-State Physics, Universität Leipzig, 04103, Leipzig, Germany
| | - Ž Pastuović
- Centre for Accelerator Science, Australian Nuclear Science and Technology Organisation, New Illawarra Road, Lucas Heights, NSW, 2234, Australia
| | - I P Degiovanni
- Istituto Nazionale Di Fisica Nucleare (INFN), Sezione Di Torino, 10125, Turin, Italy.,Istituto Nazionale Di Ricerca Metrologica (INRiM), 10135, Turin, Italy
| | - E Moreva
- Istituto Nazionale Di Ricerca Metrologica (INRiM), 10135, Turin, Italy
| | - P Aprà
- Physics Department, University of Torino, 10125, Turin, Italy.,Istituto Nazionale Di Fisica Nucleare (INFN), Sezione Di Torino, 10125, Turin, Italy
| | - P Olivero
- Physics Department, University of Torino, 10125, Turin, Italy.,Istituto Nazionale Di Fisica Nucleare (INFN), Sezione Di Torino, 10125, Turin, Italy.,Istituto Nazionale Di Ricerca Metrologica (INRiM), 10135, Turin, Italy
| | - Z Siketić
- Laboratory for Ion Beam Interactions, Ruđer Bošković Institute, 10000, Zagreb, Croatia
| | - J Meijer
- Applied Quantum Systems, Felix-Bloch Institute for Solid-State Physics, Universität Leipzig, 04103, Leipzig, Germany
| | - M Genovese
- Istituto Nazionale Di Fisica Nucleare (INFN), Sezione Di Torino, 10125, Turin, Italy.,Istituto Nazionale Di Ricerca Metrologica (INRiM), 10135, Turin, Italy
| | - J Forneris
- Physics Department, University of Torino, 10125, Turin, Italy. .,Istituto Nazionale Di Fisica Nucleare (INFN), Sezione Di Torino, 10125, Turin, Italy. .,Istituto Nazionale Di Ricerca Metrologica (INRiM), 10135, Turin, Italy.
| |
Collapse
|
2
|
Guarina L, Calorio C, Gavello D, Moreva E, Traina P, Battiato A, Ditalia Tchernij S, Forneris J, Gai M, Picollo F, Olivero P, Genovese M, Carbone E, Marcantoni A, Carabelli V. Nanodiamonds-induced effects on neuronal firing of mouse hippocampal microcircuits. Sci Rep 2018; 8:2221. [PMID: 29396456 PMCID: PMC5797106 DOI: 10.1038/s41598-018-20528-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 10/05/2017] [Accepted: 01/11/2018] [Indexed: 01/31/2023] Open
Abstract
Fluorescent nanodiamonds (FND) are carbon-based nanomaterials that can efficiently incorporate optically active photoluminescent centers such as the nitrogen-vacancy complex, thus making them promising candidates as optical biolabels and drug-delivery agents. FNDs exhibit bright fluorescence without photobleaching combined with high uptake rate and low cytotoxicity. Focusing on FNDs interference with neuronal function, here we examined their effect on cultured hippocampal neurons, monitoring the whole network development as well as the electrophysiological properties of single neurons. We observed that FNDs drastically decreased the frequency of inhibitory (from 1.81 Hz to 0.86 Hz) and excitatory (from 1.61 to 0.68 Hz) miniature postsynaptic currents, and consistently reduced action potential (AP) firing frequency (by 36%), as measured by microelectrode arrays. On the contrary, bursts synchronization was preserved, as well as the amplitude of spontaneous inhibitory and excitatory events. Current-clamp recordings revealed that the ratio of neurons responding with AP trains of high-frequency (fast-spiking) versus neurons responding with trains of low-frequency (slow-spiking) was unaltered, suggesting that FNDs exerted a comparable action on neuronal subpopulations. At the single cell level, rapid onset of the somatic AP (“kink”) was drastically reduced in FND-treated neurons, suggesting a reduced contribution of axonal and dendritic components while preserving neuronal excitability.
Collapse
Affiliation(s)
- L Guarina
- Department of Drug Science and Technology, "NIS" inter-departmental centre, University of Torino, Corso Raffaello 30, 10125, Torino, Italy
| | - C Calorio
- Department of Drug Science and Technology, "NIS" inter-departmental centre, University of Torino, Corso Raffaello 30, 10125, Torino, Italy
| | - D Gavello
- Department of Drug Science and Technology, "NIS" inter-departmental centre, University of Torino, Corso Raffaello 30, 10125, Torino, Italy
| | - E Moreva
- Istituto Nazionale Ricerca Metrologica, Strada delle Cacce 91, 10135, Torino, Italy
| | - P Traina
- Istituto Nazionale Ricerca Metrologica, Strada delle Cacce 91, 10135, Torino, Italy
| | - A Battiato
- Istituto Nazionale di Fisica Nucleare, sezione di Torino, Via P. Giuria 1, 10125, Torino, Italy
| | - S Ditalia Tchernij
- Department of Physics and "NIS" inter-departmental centre, University of Torino, Via P. Giuria 1, 10125, Torino, Italy.,Istituto Nazionale di Fisica Nucleare, sezione di Torino, Via P. Giuria 1, 10125, Torino, Italy
| | - J Forneris
- Istituto Nazionale di Fisica Nucleare, sezione di Torino, Via P. Giuria 1, 10125, Torino, Italy
| | - M Gai
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - F Picollo
- Department of Physics and "NIS" inter-departmental centre, University of Torino, Via P. Giuria 1, 10125, Torino, Italy.,Istituto Nazionale di Fisica Nucleare, sezione di Torino, Via P. Giuria 1, 10125, Torino, Italy
| | - P Olivero
- Department of Physics and "NIS" inter-departmental centre, University of Torino, Via P. Giuria 1, 10125, Torino, Italy.,Istituto Nazionale di Fisica Nucleare, sezione di Torino, Via P. Giuria 1, 10125, Torino, Italy
| | - M Genovese
- Istituto Nazionale Ricerca Metrologica, Strada delle Cacce 91, 10135, Torino, Italy.,Istituto Nazionale di Fisica Nucleare, sezione di Torino, Via P. Giuria 1, 10125, Torino, Italy
| | - E Carbone
- Department of Drug Science and Technology, "NIS" inter-departmental centre, University of Torino, Corso Raffaello 30, 10125, Torino, Italy
| | - A Marcantoni
- Department of Drug Science and Technology, "NIS" inter-departmental centre, University of Torino, Corso Raffaello 30, 10125, Torino, Italy
| | - V Carabelli
- Department of Drug Science and Technology, "NIS" inter-departmental centre, University of Torino, Corso Raffaello 30, 10125, Torino, Italy.
| |
Collapse
|
4
|
Gatto Monticone D, Katamadze K, Traina P, Moreva E, Forneris J, Ruo-Berchera I, Olivero P, Degiovanni IP, Brida G, Genovese M. Beating the Abbe diffraction limit in confocal microscopy via nonclassical photon statistics. Phys Rev Lett 2014; 113:143602. [PMID: 25325642 DOI: 10.1103/physrevlett.113.143602] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Indexed: 06/04/2023]
Abstract
We experimentally demonstrate quantum enhanced resolution in confocal fluorescence microscopy exploiting the nonclassical photon statistics of single nitrogen-vacancy color centers in diamond. By developing a general model of superresolution based on the direct sampling of the kth-order autocorrelation function of the photoluminescence signal, we show the possibility to resolve, in principle, arbitrarily close emitting centers.
Collapse
Affiliation(s)
- D Gatto Monticone
- Physics Department and NIS Inter-departmental Centre-University of Torino, I-10125 Torino, Italy and Istituto Nazionale di Fisica Nucleare (INFN) Sezione Torino, I-10125 Torino, Italy and Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia (CNISM) Sezione Torino, I-10125 Torino, Italy
| | - K Katamadze
- M. V. Lomonosov Moscow State University, 119991 Moscow, Russia and Russian Academy of Sciences, Institute of Physics and Technology, 117218 Moscow, Russia
| | - P Traina
- Istituto Nazionale di Ricerca Metrologica (INRiM), I-10135 Torino, Italy
| | - E Moreva
- Istituto Nazionale di Ricerca Metrologica (INRiM), I-10135 Torino, Italy and International Laser Center of M. V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - J Forneris
- Physics Department and NIS Inter-departmental Centre-University of Torino, I-10125 Torino, Italy and Istituto Nazionale di Fisica Nucleare (INFN) Sezione Torino, I-10125 Torino, Italy and Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia (CNISM) Sezione Torino, I-10125 Torino, Italy
| | - I Ruo-Berchera
- Istituto Nazionale di Ricerca Metrologica (INRiM), I-10135 Torino, Italy
| | - P Olivero
- Physics Department and NIS Inter-departmental Centre-University of Torino, I-10125 Torino, Italy and Istituto Nazionale di Fisica Nucleare (INFN) Sezione Torino, I-10125 Torino, Italy and Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia (CNISM) Sezione Torino, I-10125 Torino, Italy
| | - I P Degiovanni
- Istituto Nazionale di Ricerca Metrologica (INRiM), I-10135 Torino, Italy
| | - G Brida
- Istituto Nazionale di Ricerca Metrologica (INRiM), I-10135 Torino, Italy
| | - M Genovese
- Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia (CNISM) Sezione Torino, I-10125 Torino, Italy and Istituto Nazionale di Ricerca Metrologica (INRiM), I-10135 Torino, Italy
| |
Collapse
|