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De Iacovo A, Mitri F, De Santis S, Giansante C, Colace L. Colloidal Quantum Dots for Explosive Detection: Trends and Perspectives. ACS Sens 2024; 9:555-576. [PMID: 38305121 DOI: 10.1021/acssensors.3c02097] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Sensitive, accurate, and reliable detection of explosives has become one of the major needs for international security and environmental protection. Colloidal quantum dots, because of their unique chemical, optical, and electrical properties, as well as easy synthesis route and functionalization, have demonstrated high potential to meet the requirements for the development of suitable sensors, boosting the research in the field of explosive detection. Here, we critically review the most relevant research works, highlighting three different mechanisms for explosive detection based on colloidal quantum dots, namely photoluminescence, electrochemical, and chemoresistive sensing. We provide a comprehensive overview and an extensive discussion and comparison in terms of the most relevant sensor parameters. We highlight advantages, limitations, and challenges of quantum dot-based explosive sensors and outline future research directions for the advancement of knowledge in this surging research field.
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Affiliation(s)
- Andrea De Iacovo
- Department of Industrial, Electronic and Mechanical Engineering, Roma Tre University, Via Vito Volterra 62, Rome I-00146, Italy
| | - Federica Mitri
- Department of Industrial, Electronic and Mechanical Engineering, Roma Tre University, Via Vito Volterra 62, Rome I-00146, Italy
| | - Serena De Santis
- Department of Industrial, Electronic and Mechanical Engineering, Roma Tre University, Via Vito Volterra 62, Rome I-00146, Italy
| | - Carlo Giansante
- Consiglio Nazionale delle Ricerche, Istituto di Nanotecnologia CNR-NANOTEC, Via Monteroni, Lecce I-73100, Italy
| | - Lorenzo Colace
- Department of Industrial, Electronic and Mechanical Engineering, Roma Tre University, Via Vito Volterra 62, Rome I-00146, Italy
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Manakkakudy A, De Iacovo A, Maiorana E, Mitri F, Colace L. Waste Material Classification: A Short-Wave Infrared Discrete-Light-Source Approach Based on Light-Emitting Diodes. Sensors (Basel) 2024; 24:809. [PMID: 38339526 PMCID: PMC10857375 DOI: 10.3390/s24030809] [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: 12/19/2023] [Revised: 01/17/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024]
Abstract
Waste material classification is a challenging yet important task in waste management. The realization of low-cost waste classification systems and methods is critical to meet the ever-increasing demand for efficient waste management and recycling. In this paper, we demonstrate a simple, compact and low-cost classification system based on optical reflectance measurements in the short-wave infrared for the segregation of waste materials such as plastics, paper, glass, and aluminium. The system comprises a small set of LEDs and one single broadband photodetector. All devices are controlled through low-cost and low-power electronics, and data are gathered and managed via a computer interface. The proposed system reaches accuracy levels as high as 94.3% when considering seven distinct materials and 97.0% when excluding the most difficult to classify, thus representing a valuable proof-of-concept for future system developments.
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Affiliation(s)
| | - Andrea De Iacovo
- Department of Industrial, Electronic and Mechanical Engineering, Roma Tre University, 00146 Rome, Italy; (A.M.); (E.M.); (F.M.); (L.C.)
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Manakkakudy A, De Iacovo A, Maiorana E, Mitri F, Colace L. Material classification based on a SWIR discrete spectroscopy approach. Appl Opt 2023; 62:9228-9237. [PMID: 38108693 DOI: 10.1364/ao.501582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 11/08/2023] [Indexed: 12/19/2023]
Abstract
A crucial yet difficult task for waste management is the identification of raw materials like plastic, glass, aluminum, and paper. Most previous studies use the diffused reflection spectroscopy for classification purposes. Despite the benefits in terms of speed and simplicity offered by modern compact spectrometers, their cost and the need for an external, wide-spectrum source of illumination create complications. To address this issue, the present paper proposes a discrete spectroscopy method that utilizes short-wave infrared (SWIR) reflectance to identify waste materials, exploiting a small set of selected wavelengths. This approach reduces the complexity of the classification data analysis and offers a more practical alternative to the conventional method. The proposed system comprises a single germanium photodetector and 10 different light emitting diodes (LEDs). The LED wavelengths are selected to maximize the system sensitivity towards a set of seven different waste materials. Using a classification strategy relying on support vector machines, the proposed methodology reaches a classification accuracy up to 98%.
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Mitri F, De Iacovo A, De Santis S, Quarta D, Giansante C, Orsini M, Colace L. Optical gas sensor based on the combination of a QD photoluminescent probe and a QD photodetector. Nanotechnology 2022; 33:475501. [PMID: 35944493 DOI: 10.1088/1361-6528/ac8814] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 08/09/2022] [Indexed: 06/15/2023]
Abstract
We report on a sensor architecture for detection of hazardous gases. The proposed device is based on the integration of a solid-state quantum dot (QD) photoluminescent probe with a QD photodetector on the same substrate. The effectiveness of the approach is demonstrated by developing a compact optical sensor for trace detection of explosives in air. The proposed architecture is very simple and consists of a silicon substrate with both surfaces coated with QD films. The upper layer acts as photoluminescent probe, pumped by a blue LED. The change of photoluminescence intensity associated to the interaction between the QDs and the target analyte is measured by the QD photodetector fabricated on the opposite side of the substrate. The sensor is mounted into a small chamber provided with the LED and the front-end electronics. The device is characterized by using nitrobenzene as representative nitroaromatic compound. Extremely low concentrations (down to 0.1 ppm) can be detected by the proposed device, with a theoretical detection limit estimated to be as low as 2 ppb. Results are repeatable and no ageing effect is observed over a 70 d period. The proposed architecture may provide a promising solution for explosive detection in air as well as other sensing applications, thanks to its sensitivity, simple fabrication process, practical usability and cost effectiveness.
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Affiliation(s)
- Federica Mitri
- Department of Industrial, Electronic and Mechanical Engineering, Roma Tre University, Via Vito Volterra 62, I-00146, Rome, Italy
| | - Andrea De Iacovo
- Department of Industrial, Electronic and Mechanical Engineering, Roma Tre University, Via Vito Volterra 62, I-00146, Rome, Italy
| | - Serena De Santis
- Department of Industrial, Electronic and Mechanical Engineering, Roma Tre University, Via Vito Volterra 62, I-00146, Rome, Italy
| | - Danila Quarta
- Consiglio Nazionale delle Ricerche, Istituto di Nanotecnologia CNR-NANOTEC, Via Monteroni, Lecce I-73100, Italy
| | - Carlo Giansante
- Consiglio Nazionale delle Ricerche, Istituto di Nanotecnologia CNR-NANOTEC, Via Monteroni, Lecce I-73100, Italy
| | - Monica Orsini
- Department of Industrial, Electronic and Mechanical Engineering, Roma Tre University, Via Vito Volterra 62, I-00146, Rome, Italy
| | - Lorenzo Colace
- Department of Industrial, Electronic and Mechanical Engineering, Roma Tre University, Via Vito Volterra 62, I-00146, Rome, Italy
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Mitri F, Enk A, Toberer F. [Axillary skin-colored papules in a young woman]. Hautarzt 2021; 73:86-87. [PMID: 34132859 DOI: 10.1007/s00105-021-04835-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/10/2021] [Indexed: 10/21/2022]
Affiliation(s)
- F Mitri
- Universitätshautklinik Heidelberg, Im Neuenheimer Feld 440, 69120, Heidelberg, Deutschland.
| | - A Enk
- Universitätshautklinik Heidelberg, Im Neuenheimer Feld 440, 69120, Heidelberg, Deutschland
| | - F Toberer
- Universitätshautklinik Heidelberg, Im Neuenheimer Feld 440, 69120, Heidelberg, Deutschland
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Mitri F, Mentzel T, Toberer F. [Subcutaneous nodule on the lower leg of an 87-year-old man]. Hautarzt 2021; 72:828-829. [PMID: 33594507 DOI: 10.1007/s00105-021-04771-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/25/2021] [Indexed: 10/22/2022]
Affiliation(s)
- F Mitri
- Universitätshautklinik Heidelberg, Im Neuenheimer Feld 440, 69120, Heidelberg, Deutschland.
| | - T Mentzel
- Dermatopathologie Friedrichshafen, Friedrichshafen, Deutschland
| | - F Toberer
- Universitätshautklinik Heidelberg, Im Neuenheimer Feld 440, 69120, Heidelberg, Deutschland
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Kotzerke M, Mitri F, Marbach F, Enk A, Haenssle H. A case of PAPASH syndrome in a young man carrying a novel heterozygote missense variant in PSTPIP1. J Eur Acad Dermatol Venereol 2021; 35:e439-e440. [PMID: 33587775 DOI: 10.1111/jdv.17171] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- M Kotzerke
- Department of Dermatology, University Hospital Heidelberg, Heidelberg, Germany
| | - F Mitri
- Department of Dermatology, University Hospital Heidelberg, Heidelberg, Germany
| | - F Marbach
- Institute of Human Genetics, Heidelberg University, Heidelberg, Germany
| | - A Enk
- Department of Dermatology, University Hospital Heidelberg, Heidelberg, Germany
| | - H Haenssle
- Department of Dermatology, University Hospital Heidelberg, Heidelberg, Germany
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Mitri F, Enk A, Bersano A, Kraemer M. Livedo racemosa in neurological diseases: an update on the differential diagnoses. Eur J Neurol 2020; 27:1832-1843. [DOI: 10.1111/ene.14390] [Citation(s) in RCA: 5] [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] [Received: 05/02/2020] [Revised: 05/23/2020] [Accepted: 05/26/2020] [Indexed: 11/29/2022]
Affiliation(s)
- F. Mitri
- Department of Dermatology University Hospital Heidelberg Heidelberg Germany
| | - A. Enk
- Department of Dermatology University Hospital Heidelberg Heidelberg Germany
| | - A. Bersano
- Cerebrovascular Unit Fondazione IRCCS Istituto Neurologico ‘Carlo Besta’ Milan Italy
| | - M. Kraemer
- Department of Neurology Alfried Krupp von Bohlen und Halbach Hospital Essen Germany
- Department of Neurology Heinrich Heine University Hospital Düsseldorf Germany
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Affiliation(s)
- F. Mitri
- Department of Dermatology Ruprecht‐Karls‐University Medical Center University Hospital Heidelberg Heidelberg Germany
| | - H. Haenssle
- Department of Dermatology Ruprecht‐Karls‐University Medical Center University Hospital Heidelberg Heidelberg Germany
| | - A. Enk
- Department of Dermatology Ruprecht‐Karls‐University Medical Center University Hospital Heidelberg Heidelberg Germany
| | - F. Toberer
- Department of Dermatology Ruprecht‐Karls‐University Medical Center University Hospital Heidelberg Heidelberg Germany
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Mitri F. Partial-wave series expansions in spherical coordinates for the acoustic field of vortex beams generated from a finite circular aperture. IEEE Trans Ultrason Ferroelectr Freq Control 2014; 61:2089-2097. [PMID: 25474783 DOI: 10.1109/tuffc.2014.006498] [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] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Stemming from the Rayleigh-Sommerfeld surface integral, the addition theorems for the spherical wave and Legendre functions, and a weighting function describing the behavior of the radial component vp1 of the normal velocity at the surface of a finite circular radiating source, partial-wave series expansions are derived for the incident field of acoustic spiraling (vortex) beams in a spherical coordinate system centered on the axis of wave propagation. Examples for vortex beams, comprising ρ-vortex, zeroth-order and higher order Bessel-Gauss and Bessel, truncated Neumann-Gauss and Hankel- Gauss, Laguerre-Gauss, and other Gaussian-type vortex beams are considered. The mathematical expressions are exact solutions of the Helmholtz equation. The results presented here are particularly useful to accurately evaluate analytically and compute numerically the acoustic scattering and other mechanical effects of finite vortex beams, such as the axial and 3-D acoustic radiation force and torque components on a sphere of any (isotropic, anisotropic, etc.) material (fluid, elastic, viscoelastic, etc.), either centered on the beam's axis of wave propagation, or placed off-axially. Numerical predictions allow optimal design of parameters in applications including but not limited to acoustical tweezers, acousto-fluidics, beamforming design, and imaging, to name a few.
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Rosa L, Silva Z, Pereira M, Santos L, Mitri F, Carvalho-Barros R, Silva D. Descriptive anatomic study of the great vessels of the heart in the capuchin monkey Cebus apella(Linnaeus, 1758). Anat Histol Embryol 2012; 41:469-75. [DOI: 10.1111/j.1439-0264.2012.01163.x] [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] [Received: 12/09/2011] [Accepted: 04/20/2012] [Indexed: 11/29/2022]
Affiliation(s)
- L. Rosa
- Faculty of Medicine Veterinary; Federal University of Uberlandia; Uberlandia; MG; 38400-902; Brazil
| | - Z. Silva
- Department of Biological Sciences; Federal University of Goias; Catalão; GO; 75704-020; Brazil
| | - M. Pereira
- Faculty of Medicine; University Center of Patos de Minas; Patos de Minas; MG; 38702-054; Brazil
| | - L. Santos
- Institute of Biomedical Sciences; Federal University of Uberlandia; Uberlandia; MG; 38400-902; Brazil
| | - F. Mitri
- Institute of Biomedical Sciences; Federal University of Uberlandia; Uberlandia; MG; 38400-902; Brazil
| | - R. Carvalho-Barros
- Department of Biological Sciences; Federal University of Goias; Catalão; GO; 75704-020; Brazil
| | - D. Silva
- Institute of Biomedical Sciences; Federal University of Uberlandia; Uberlandia; MG; 38400-902; Brazil
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Mitri F, Hofmeyr GJ, van Gelderen CJ. Meconium during labour--self-medication and other associations. S Afr Med J 1987; 71:431-3. [PMID: 3563790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Prior to artificial rupture of membranes, 498 women were questioned about obstetric and social factors including self-medication during pregnancy. Caesarean section (P less than 0,01) and low Apgar scores (P less than 0,001) were significantly more common in pregnancies complicated by fetal meconium passage. Meconium passage was more common in women who had recently taken castor oil (P less than 0,01) and possibly herbal substances called 'sihlambezo' (trend P less than 0,2). Use of laxatives or enemas and other obstetric risk factors were not associated with meconium passage.
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