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Pinna A, Rocca S, Porcu S, Cardia R, Chiriu D, Carbonaro CM, Corpino R, Tuveri E, Coli P, Ricci PC. Unveiling Hidden Prints: Optically stimulated luminescence for latent fingerprint detection. Heliyon 2023; 9:e22794. [PMID: 38058441 PMCID: PMC10696211 DOI: 10.1016/j.heliyon.2023.e22794] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 10/25/2023] [Accepted: 11/20/2023] [Indexed: 12/08/2023] Open
Abstract
Fluorescent lighting and optical techniques have been widely utilized to enhance the detection of latent fingerprints. However, the development of new techniques is imperative to expand the range of surfaces from which latent fingerprints can be detected. When relying on traditional methods, fingerprint evidence can remain undetected or even disregarded due to insufficient detection and limited detail, especially when dealing with a luminescent background. In this study, we propose the utilization of optically stimulated luminescence (OSL) applied to a Ba2SiO4 matrix, co-doped with Eu2+ and Dy3+, as a powerful method for visualizing latent fingerprints on various surfaces, including thin plastic bags, rigid duct tape, thin aluminum foil, and glass slices. This technique effectively eliminates any luminescent background and significantly enhances optical imaging. This represents the first successful application of OSL in the development of latent fingerprints, thus paving the way for more efficient and effective forensic techniques in the future.
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Affiliation(s)
- Andrea Pinna
- Department of Physics, University of Cagliari, S.p. no. 8 Km 0700, 09042 Monserrato, CA, Italy
| | - Sofia Rocca
- Department of Physics, University of Cagliari, S.p. no. 8 Km 0700, 09042 Monserrato, CA, Italy
| | - Stefania Porcu
- Department of Physics, University of Cagliari, S.p. no. 8 Km 0700, 09042 Monserrato, CA, Italy
| | - Roberto Cardia
- Scientific Investigation Department (RIS) of Cagliari, Piazza San Bartolomeo 29, 09126, Cagliari, CA, Italy
| | - Daniele Chiriu
- Department of Physics, University of Cagliari, S.p. no. 8 Km 0700, 09042 Monserrato, CA, Italy
| | - Carlo M. Carbonaro
- Department of Physics, University of Cagliari, S.p. no. 8 Km 0700, 09042 Monserrato, CA, Italy
| | - Riccardo Corpino
- Department of Physics, University of Cagliari, S.p. no. 8 Km 0700, 09042 Monserrato, CA, Italy
| | - Enrica Tuveri
- Scientific Investigation Department (RIS) of Cagliari, Piazza San Bartolomeo 29, 09126, Cagliari, CA, Italy
| | - Pietro Coli
- Scientific Investigation Department (RIS) of Cagliari, Piazza San Bartolomeo 29, 09126, Cagliari, CA, Italy
| | - Pier Carlo Ricci
- Department of Physics, University of Cagliari, S.p. no. 8 Km 0700, 09042 Monserrato, CA, Italy
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Madonia A, Minervini G, Terracina A, Pramanik A, Martorana V, Sciortino A, Carbonaro CM, Olla C, Sibillano T, Giannini C, Fanizza E, Curri ML, Panniello A, Messina F, Striccoli M. Dye-Derived Red-Emitting Carbon Dots for Lasing and Solid-State Lighting. ACS Nano 2023; 17:21274-21286. [PMID: 37870465 PMCID: PMC10655242 DOI: 10.1021/acsnano.3c05566] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 10/24/2023]
Abstract
Carbon dots are carbon-based nanoparticles renowned for their intense light-emitting capabilities covering the whole visible light range. Achieving carbon dots emitting in the red region with high efficiency is extremely relevant due to their huge potential in biological applications and in optoelectronics. Currently, photoluminescence in such an energy interval is often associated with polyheterocyclic molecular domains forming during the synthesis that, however, present low emission efficiency and issues in controlling the optical features. Here, we overcome these problems by solvothermally synthesizing carbon dots starting from Neutral Red, a common red-emitting dye, as a molecular precursor. As a result of the synthesis, such molecular fluorophore is incorporated into a carbonaceous core while retaining its original optical properties. The obtained nanoparticles are highly luminescent in the red region, with a quantum yield comparable to that of the starting dye. Most importantly, the nanoparticle carbogenic matrix protects the Neutral Red molecules from photobleaching under ultraviolet excitation while preventing aggregation-induced quenching, thus allowing solid-state emission. These advantages have been exploited to develop a fluorescence-based color conversion layer by fabricating polymer-based highly concentrated solid-state carbon dot nanocomposites. Finally, the dye-based carbon dots demonstrate both stable Fabry-Perot lasing and efficient random lasing emission in the red region.
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Affiliation(s)
- Antonino Madonia
- CNR-IPCF
Bari Division, Italian National Research
Council, Bari, 70126, Italy
| | - Gianluca Minervini
- CNR-IPCF
Bari Division, Italian National Research
Council, Bari, 70126, Italy
- Department
of Electrical and Information Engineering, Polytechnic of Bari, Bari, 70126, Italy
| | - Angela Terracina
- Dipartimento
di Fisica e Chimica “Emilio Segrè”, Università degli Studi di Palermo, Palermo 90123, Italy
| | - Ashim Pramanik
- Dipartimento
di Fisica e Chimica “Emilio Segrè”, Università degli Studi di Palermo, Palermo 90123, Italy
| | - Vincenzo Martorana
- Institute
of Biophysics Palermo Division, Italian
National Research Council, Palermo 90146, Italy
| | - Alice Sciortino
- Dipartimento
di Fisica e Chimica “Emilio Segrè”, Università degli Studi di Palermo, Palermo 90123, Italy
- ATeN
Center, Università degli Studi di
Palermo, Palermo 90123, Italy
| | | | - Chiara Olla
- Department
of Physics, University of Cagliari, Monserrato 09042, Italy
| | - Teresa Sibillano
- CNR-IC
Institute of Crystallography, Italian National
Research Council, Bari 70122, Italy
| | - Cinzia Giannini
- CNR-IC
Institute of Crystallography, Italian National
Research Council, Bari 70122, Italy
| | - Elisabetta Fanizza
- CNR-IPCF
Bari Division, Italian National Research
Council, Bari, 70126, Italy
- Chemistry
Department, University of Bari “Aldo
Moro”, Bari 70126, Italy
| | - Maria L. Curri
- CNR-IPCF
Bari Division, Italian National Research
Council, Bari, 70126, Italy
- Chemistry
Department, University of Bari “Aldo
Moro”, Bari 70126, Italy
| | - Annamaria Panniello
- CNR-IPCF
Bari Division, Italian National Research
Council, Bari, 70126, Italy
| | - Fabrizio Messina
- Dipartimento
di Fisica e Chimica “Emilio Segrè”, Università degli Studi di Palermo, Palermo 90123, Italy
- ATeN
Center, Università degli Studi di
Palermo, Palermo 90123, Italy
| | - Marinella Striccoli
- CNR-IPCF
Bari Division, Italian National Research
Council, Bari, 70126, Italy
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Salis M, Carbonaro CM, Corpino R, Anedda A, Ricci PC. Investigation of energy transfer in terbium doped Y (2)SiO(5) phosphor particles. J Phys Condens Matter 2012; 24:295401. [PMID: 22713667 DOI: 10.1088/0953-8984/24/29/295401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The kinetics of luminescence of sol-gel synthesized terbium doped Y (2)SiO(5) (YSO) phosphor particles is investigated in detail with reference to Tb concentration in the 0.001%-10% range. By increasing the dopant concentration, the luminescence profile changes from a blue to a green peaked emission spectrum because of the energy transfer among centers. The inter-center energy transfer mechanism is well accounted for by the Inokuti-Hirayama (IH) kinetic model which is based on a statistical average of inter-center distance dependent decay modes of the donor luminescence. The distribution of the decay modes is implemented from the Förster-Dexter resonance theory of energy transfer by assuming a rate constant for the energy transfer by multipolar interactions between donors and acceptors. However, the experimental results recorded in the low concentration limit show the presence of green emission contributions in the luminescence spectrum which cannot be related to the Tb concentration; for this reason an additional internal energy transfer mechanism, occurring among levels of the same center, is proposed to account for the recorded emission properties. Thus, a new and more exhaustive model which includes both the internal and external energy transfer processes is considered; the proposed model allows a better explanation of the spectroscopic features of Tb related centers in YSO crystals and discloses the critical concentration and the quantum yields of the different energy transfer mechanisms.
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Affiliation(s)
- M Salis
- Dipartimento di Fisica, Università di Cagliari, Cittadella Universitaria, S.P. no 8, I-09042 Monserrato (Cagliari), Italy
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Carbonaro CM, Ricci PC, Grandi S, Marceddu M, Corpino R, Salis M, Anedda A. On the formation of aggregates in silica–rhodamine 6G type II hybrids. RSC Adv 2012. [DOI: 10.1039/c2ra00830k] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Ricci PC, Salis M, Corpino R, Carbonaro CM, Fortin E, Anedda A. Emission properties of Tb3+ ions in LYSO: evidence of a cross relaxation mechanism explained by a kinetic model. J Phys Condens Matter 2010; 22:345503. [PMID: 21403256 DOI: 10.1088/0953-8984/22/34/345503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The optical properties of Tb(3+) ions in oxyorthosilicates of lutetium and yttrium (LYSO) are reported. The introduction of a small number of terbium ions (nominal content 10 ppm) generates, in the otherwise transparent absorption spectrum of the matrix, an ultraviolet absorption band peaked at about 240 nm. By exciting within the reported UV band, line shaped emissions in the 350-600 nm range are detected. These transitions are related to the (5)D(3) and (5)D(4) levels of the Tb(3+) ions and are characterized by decay times in the millisecond time domain. Analysis of the decay time measurements allows us to individuate a cross relaxation mechanism among terbium ions even at the low dopant concentration investigated. We propose a three-level kinetic model which is able to successfully reproduce the experimental data, allowing us to discriminate among the radiative and non-radiative contributions to the observed emissions.
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Affiliation(s)
- P C Ricci
- Dipartimento di Fisica, Università di Cagliari, Cittadella Universitaria, Monserrato (Cagliari), Italy.
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Carbonaro CM, Meinardi F, Ricci PC, Salis M, Anedda A. Light Assisted Dimer to Monomer Transformation in Heavily Doped Rhodamine 6G−Porous Silica Hybrids. J Phys Chem B 2009; 113:5111-6. [DOI: 10.1021/jp810835j] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Carlo M. Carbonaro
- Dipartimento di Fisica, Università di Cagliari, Cittadella Universitaria, S.P. no. 8, I-09042 Monserrato, Cagliari, Italy, INFM and Dipartimento di Scienza dei Materiali, Università Milano-Bicocca, Via Cozzi 53, I-20125 Milano, Italy, and CGS, Centro Grandi Strumenti, Università di Cagliari, S.P. no. 8, km 0.700, 09042, Monserrato, Italy
| | - Franco Meinardi
- Dipartimento di Fisica, Università di Cagliari, Cittadella Universitaria, S.P. no. 8, I-09042 Monserrato, Cagliari, Italy, INFM and Dipartimento di Scienza dei Materiali, Università Milano-Bicocca, Via Cozzi 53, I-20125 Milano, Italy, and CGS, Centro Grandi Strumenti, Università di Cagliari, S.P. no. 8, km 0.700, 09042, Monserrato, Italy
| | - Pier C. Ricci
- Dipartimento di Fisica, Università di Cagliari, Cittadella Universitaria, S.P. no. 8, I-09042 Monserrato, Cagliari, Italy, INFM and Dipartimento di Scienza dei Materiali, Università Milano-Bicocca, Via Cozzi 53, I-20125 Milano, Italy, and CGS, Centro Grandi Strumenti, Università di Cagliari, S.P. no. 8, km 0.700, 09042, Monserrato, Italy
| | - Marcello Salis
- Dipartimento di Fisica, Università di Cagliari, Cittadella Universitaria, S.P. no. 8, I-09042 Monserrato, Cagliari, Italy, INFM and Dipartimento di Scienza dei Materiali, Università Milano-Bicocca, Via Cozzi 53, I-20125 Milano, Italy, and CGS, Centro Grandi Strumenti, Università di Cagliari, S.P. no. 8, km 0.700, 09042, Monserrato, Italy
| | - Alberto Anedda
- Dipartimento di Fisica, Università di Cagliari, Cittadella Universitaria, S.P. no. 8, I-09042 Monserrato, Cagliari, Italy, INFM and Dipartimento di Scienza dei Materiali, Università Milano-Bicocca, Via Cozzi 53, I-20125 Milano, Italy, and CGS, Centro Grandi Strumenti, Università di Cagliari, S.P. no. 8, km 0.700, 09042, Monserrato, Italy
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Abstract
The quest for a solid-state tunable dye laser can be satisfied by sol-gel prepared organic-inorganic hybrids. A photostability study of porous silica-Rhodamine 6G hybrids prepared via a sol-gel method is presented. The dye molecules can be incorporated into the silica matrix by forming weak or covalent bonds (hybrids of classes I and II, respectively). New class II samples and traditional class I materials prepared by the pre-doping method were synthesized. Samples were characterized by photoluminescence measurements to compare the emission properties and the photostability of the samples. The decay of the fluorescence signal as the cumulative excitation energy increases is reported and interpreted by hypothesizing that the dye molecules can be hosted in different surroundings within the porous glass matrix. The reported photoluminescence and photobleaching features indicate the class II samples as good candidates for solid-state dye lasers.
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Affiliation(s)
- Carlo M Carbonaro
- Department of Physics, University of Cagliari, and INFM, Cittadella Universitaria, S. P. No. 8, I-09042 Monserrato, Cagliari, Italy.
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Abstract
The quest for a solid-state tunable dye laser can be satisfied by sol-gel prepared organic-inorganic hybrids. A photostability study of porous silica-Rhodamine 6G hybrids prepared via a sol-gel method is presented. The dye molecules can be incorporated into the silica matrix by forming weak or covalent bonds (hybrids of classes I and II, respectively). New class II samples and traditional class I materials prepared by the pre-doping method were synthesized. Samples were characterized by photoluminescence measurements to compare the emission properties and the photostability of the samples. The decay of the fluorescence signal as the cumulative excitation energy increases is reported and interpreted by hypothesizing that the dye molecules can be hosted in different surroundings within the porous glass matrix. The reported photoluminescence and photobleaching features indicate the class II samples as good candidates for solid-state dye lasers.
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Affiliation(s)
- Carlo M Carbonaro
- Department of Physics, University of Cagliari, and INFM, Cittadella Universitaria, S. P. No. 8, I-09042 Monserrato, Cagliari, Italy.
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Abstract
The optical properties of sol-gel synthesized porous silica excited by synchrotron radiation in the 4-10 eV range of samples with different porosity at 8 K and room temperature are reported. The analysis of the ultraviolet photoluminescence indicate the contributions of two different emitting centers. The spectral and temporal characteristics of the two luminescence bands are reported: emission peaks at about 3.7 and 4.0 eV, excitation channels around 5.4-5.7 and 6.2-6.5 eV, and mean lifetimes of about 17 and 2 ns, respectively. The analysis of the optical properties in samples with different porosity allows us to propose a silanol-related model for the two centers.
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Affiliation(s)
- Carlo M Carbonaro
- Dipartimento di Fisica, Università di Cagliari and INFM UdR Cagliari, Cittadella Universitaria, SP no 8 Km 0.700, I-09042 Monserrato (Ca), Italy.
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Abstract
We studied the optical properties of sol-gel synthesized porous silica excited by synchrotron radiation in the 4-10 eV range. The spectral and temporal characteristics of the ultraviolet photoluminescence at about 3.7 eV are reported. The UV emission results from the contribution of two different centers: the first one centered at 3.7 eV with a decay time of 2.0 ns and the second one peaked at 3.9 eV with a decay time of 20 ns. We propose to assign the observed luminescence to different interacting surface silanols.
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Affiliation(s)
- Alberto Anedda
- Dipartimento di Fisica, Università di Cagliari and INFM UdR Cagliari, Cittadella Universitaria, I-09042 Monserrato (Ca), Italy
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Affiliation(s)
- Alberto Anedda
- Dipartimento di Fisica, Università di Cagliari, and INFM, UdR Cagliari, sp n° 8, Km 0,700, I-09042 Monserrato (CA), Italy
| | - Carlo M. Carbonaro
- Dipartimento di Fisica, Università di Cagliari, and INFM, UdR Cagliari, sp n° 8, Km 0,700, I-09042 Monserrato (CA), Italy
| | - Francesca Clemente
- Dipartimento di Fisica, Università di Cagliari, and INFM, UdR Cagliari, sp n° 8, Km 0,700, I-09042 Monserrato (CA), Italy
| | - Riccardo Corpino
- Dipartimento di Fisica, Università di Cagliari, and INFM, UdR Cagliari, sp n° 8, Km 0,700, I-09042 Monserrato (CA), Italy
| | - P. Carlo Ricci
- Dipartimento di Fisica, Università di Cagliari, and INFM, UdR Cagliari, sp n° 8, Km 0,700, I-09042 Monserrato (CA), Italy
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Carbonaro CM, Fiorentini V, Bernardini F. Proof of the thermodynamical stability of the E' center in SiO2. Phys Rev Lett 2001; 86:3064-3067. [PMID: 11290108 DOI: 10.1103/physrevlett.86.3064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2000] [Indexed: 05/23/2023]
Abstract
The E' center is a paradigmatic radiation-induced defect in SiO2 whose peculiar EPR and hyperfine activity has been known for over 40 years. This center has been traditionally identified with a distorted, positively charged oxygen vacancy V(+)O. However, no direct proof of the stability of this defect has ever been provided, so that its identification is still largely incomplete. Here we prove directly that distorted V(+)O is metastable and that it satisfies the key requirements for its identification as E', such as thermal and optical response, and activation-deactivation mechanisms.
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Affiliation(s)
- C M Carbonaro
- INFM and Dipartimento di Fisica, Università di Cagliari, Cittadella Universitaria, I-09042 Monserrato, CA, Italy
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Carbonaro CM, Bertoncini R, Meloni F, Rovere M. Collective behavior in the single-electron charging regime through classical molecular dynamics. Phys Rev B Condens Matter 1996; 53:10154-10159. [PMID: 9982582 DOI: 10.1103/physrevb.53.10154] [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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