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Abstract
Detectors are a key feature of the contemporary scientific approach to cultural heritage (CH), both for diagnostics and conservation. INFN-CHNet is the network of the Italian National Institute of Nuclear Physics that develops and applies new instrumentation for the study of CH. This process results in both optimized traditional state-of-the-art and highly innovative detection setups for spectrometric techniques. Examples of the former are X-rays, gamma-rays, visible-light and particles spectrometers tailored for CH applications, with optimized performances, reliability, weight, transportability, cost, absorbed power, and complementarity with other techniques. Regarding the latter, examples are ARDESIA, the array of detectors at the DAΦNE-Light facility, the MAXRS detection setup at the Riken-RAL muon beamline and the imaging facilities at the LENA Laboratory. Paths for next-generation instruments have been suggested, as in the case of the X-ray Superconductive Detectors and X-ray Microcalorimeter Spectrometers, allowing astonishing improvement in energy resolution. Many issues in CH can now be addressed thanks to scientific techniques exploiting the existing detectors, while many others are still to be addressed and require the development of new approaches and detectors.
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Di Gioacchino D, Marcelli A, Puri A, De Sio A, Cestelli Guidi M, Kamili Y, Della Ventura G, Notargiacomo A, Postorino P, Mangialardo S, Woerner E, Pace E. Graphitic Patterns on CVD Diamond Plate as Microheating/Thermometer Devices. ACS APPLIED MATERIALS & INTERFACES 2015; 7:10896-10904. [PMID: 25946317 DOI: 10.1021/acsami.5b02094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A simple compact temperature sensor and microheater in a wide temperature range has been developed, realizing a laser-patterned resistive structure on the surface of a synthetic polycrystalline diamond plate. Imaging and spectroscopy techniques used to investigate morphology, structure, and composition of the pattern showed that it incorporates different nondiamond carbon phases. Transport experiments revealed the semiconducting behavior of this microresistor. Thermal power measurements versus temperature are presented. A possible application of this device that may easily match compact experimental layouts avoiding both thermal anchoring offset and mechanical stress between sample and sensor is discussed. The patterned structure undergoes testing as a microthermometer, providing fast response and excellent stability versus time. It exhibits a good sensitivity that coupled to an easy calibration procedure minimizes errors and guarantees high accuracy. Plot of temperature versus input power of the resistive patterned line used as microheater shows a linear behavior in an extended temperature range.
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Affiliation(s)
| | - Augusto Marcelli
- †INFN- National Laboratory of Frascati, Via Enrico Fermi 40, 00044 Roma, Italy
- ‡Rome International Center for Materials Science Superstripes, Via dei Sabelli 119A, 00185 Roma, Italy
| | - Alessandro Puri
- †INFN- National Laboratory of Frascati, Via Enrico Fermi 40, 00044 Roma, Italy
| | - Antonio De Sio
- ∥University of Firenze, Physics and Astronomy Department, Largo Enrico Fermi 2, 50125 Florence, Italy
| | | | - Yimamu Kamili
- ⊥University of Camerino, Science and Technology Faculty, Via Madonna delle Carceri 9, 62032 Camerino, Macerata, Italy
| | - Giancarlo Della Ventura
- §Department of Geological Science, University of Roma Tre, Largo San Leonardo Murialdo 1, 00146 Roma, Italy
| | - Andrea Notargiacomo
- #IFN- Institute for Photonic and Nanotechnologies, Via Cineto Romano 32, 00156 Rome, Italy
| | - Paolo Postorino
- ∇CNR-IOM and University of Rome Sapienza, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Sara Mangialardo
- ∇CNR-IOM and University of Rome Sapienza, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Eckhard Woerner
- ○Diamond Materials GmbH, Hans-Bunte-Strasse 19, 79108 Freiburg, Germany
| | - Emanuele Pace
- †INFN- National Laboratory of Frascati, Via Enrico Fermi 40, 00044 Roma, Italy
- ∥University of Firenze, Physics and Astronomy Department, Largo Enrico Fermi 2, 50125 Florence, Italy
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Banas K, Banas A, Gajda M, Pawlicki B, Kwiatek WM, Breese MBH. Pre-processing of Fourier transform infrared spectra by means of multivariate analysis implemented in the R environment. Analyst 2015; 140:2810-4. [PMID: 25723954 DOI: 10.1039/c5an00002e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pre-processing of Fourier transform infrared (FTIR) spectra is typically the first and crucial step in data analysis. Very often hyperspectral datasets include the regions characterized by the spectra of very low intensity, for example two-dimensional (2D) maps where the areas with only support materials (like mylar foil) are present. In that case segmentation of the complete dataset is required before subsequent evaluation. The method proposed in this contribution is based on a multivariate approach (hierarchical cluster analysis), and shows its superiority when compared to the standard method of cutting-off by using only the mean spectral intensity. Both techniques were implemented and their performance was tested in the R statistical environment - open-source platform - that is a favourable solution if the repeatability and transparency are the key aspects.
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Affiliation(s)
- Krzysztof Banas
- Singapore Synchrotron Light Source, 5 Research Link, Singapore 117603.
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Marcelli A, Cinque G. Infrared Synchrotron Radiation Beamlines: High Brilliance Tools for IR Spectromicroscopy. BIOMEDICAL APPLICATIONS OF SYNCHROTRON INFRARED MICROSPECTROSCOPY 2010. [DOI: 10.1039/9781849731997-00067] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Augusto Marcelli
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati Via Enrico Fermi 40, I-00044 Frascati Italy
| | - Gianfelice Cinque
- Diamond Light Source, Harwell Science and Innovation Campus Chilton Didcot Oxon OX11 ODE UK
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Petibois C, Cestelli-Guidi M, Piccinini M, Moenner M, Marcelli A. Synchrotron radiation FTIR imaging in minutes: a first step towards real-time cell imaging. Anal Bioanal Chem 2010; 397:2123-9. [PMID: 20517599 DOI: 10.1007/s00216-010-3817-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2010] [Revised: 04/30/2010] [Accepted: 05/02/2010] [Indexed: 11/26/2022]
Abstract
FTIR microscopy with a focal plane array (FPA) of detectors enables routine chemical imaging on individual cells in only a few minutes. The brilliance of synchrotron radiation (SR) IR sources may enhance the signal obtained from such small biosamples containing small amounts of organic matter. We investigated individual cells obtained from a cell culture specifically developed for transmission FTIR imaging using either a Globar or an SR source coupled to the same instrumentation. SR-IR source focussing was optimized to control the energy distribution on the FPA of detectors. Here we show that accessing the IR absorption distribution from all the organic contents of cells at 1 x 1 microm pixel resolution was possible only with high circulating current (> or = 1.2 A) illuminating a limited number of the FPA's detectors to increase the signal-to-noise ratio of IR images. Finally, a high-current SR ring is mandatory for collecting FTIR images of biosamples with a high contrast in minutes.
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Affiliation(s)
- C Petibois
- Université de Bordeaux 2, CNRS UMR 5084, B8 Avenue des Facultés, 33405 Pessac-Cedex, France.
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Petibois C, Piccinini M, Guidi MC, Marcelli A. Facing the challenge of biosample imaging by FTIR with a synchrotron radiation source. JOURNAL OF SYNCHROTRON RADIATION 2010; 17:1-11. [PMID: 20029106 DOI: 10.1107/s0909049509046056] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2009] [Accepted: 11/02/2009] [Indexed: 05/28/2023]
Abstract
Fourier-transform infrared (FTIR) synchrotron radiation (SR) microspectroscopy is a powerful molecular probe of biological samples at cellular resolution (<10 microm). As the brilliance of SR is 100-1000 times higher than that of a conventional Globar source, FTIR microscopes are now available in almost all advanced SR facilities around the world. However, in spite of this superior performance, the expected advances in IR SR microscopy have not yet been realised, particularly with regard to bio-analytical studies of single cells and soft tissues. In recent decades solid-state array detectors have revolutionized the fields of molecular spectroscopy and chemical imaging, and now new IR focal plane array detectors implemented at ultra-bright SR facilities will extend the performance and overcome the existing limitations, possibly allowing IR SR instrumentation to achieve the highest sensitivity and resolution of molecular imaging. The impact of IR imaging on large tissue area and the complexity of the analysis are discussed. In view of the high brilliance of SR sources, a comparison of published microscope images is given. Finally, it is briefly outlined how an optimized combination of IR instrumentation and SR optical systems could reach the expected advantages of a SR-based FTIR imaging system.
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Affiliation(s)
- Cyril Petibois
- Université de Bordeaux 2, CNRS UMR 5248 CBMN, B8 Avenue des facultés, F-33405 Talence Cedex, France.
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Applying Dynamic and Synchronous DRIFTS/EXAFS to the Structural Reactive Behaviour of Dilute (≤1 wt%) Supported Rh/Al2O3 Catalysts using Quick and Energy Dispersive EXAFS. Top Catal 2009. [DOI: 10.1007/s11244-009-9321-2] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Sheregii EM, Cebulski J, Marcelli A, Piccinini M. Temperature dependence discontinuity of the phonon mode frequencies caused by a zero-gap state in HgCdTe alloys. PHYSICAL REVIEW LETTERS 2009; 102:045504. [PMID: 19257441 DOI: 10.1103/physrevlett.102.045504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2008] [Indexed: 05/27/2023]
Abstract
In the HgCdTe (MCT) alloys, a zero-gap state E(g)=Gamma(6)-Gamma(8)=0 may occur as the composition varies from HgTe to CdTe. This singular mechanism of the E(g) variation may be triggered by an external pressure or by a temperature. In this Letter, we present experimental data of the optical reflectivity in the far-infrared (FIR) domain in a wide interval of temperature (from 10 to 290 K) of the Hg1-xCdxTe (x=0.115) samples. Since the intensity of classical IR sources drops abruptly in this spectral region, a brilliant synchrotron radiation FIR source has been used. The results clearly show that frequencies of the optical phonon modes exhibit discontinuity in their temperature dependence when a zero-gap state occurs.
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Affiliation(s)
- E M Sheregii
- Institute of Physics, University of Rzeszów, Rejtana 16a, 35-310 Rzeszów, Poland
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Della Ventura G, Bellatreccia F, Piccinini M. Channel CO2 in feldspathoids: New data and new perspectives. ACTA ACUST UNITED AC 2008. [DOI: 10.1007/s12210-008-0008-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bioimaging of cells and tissues using accelerator-based sources. Anal Bioanal Chem 2008; 391:1599-608. [DOI: 10.1007/s00216-008-2157-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2007] [Revised: 03/03/2008] [Accepted: 04/22/2008] [Indexed: 10/22/2022]
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Sacchetti A, Guidi MC, Arcangeletti E, Nucara A, Calvani P, Piccinini M, Marcelli A, Postorino P. Far-infrared absorption of La1-xCaxMnO3-y at high pressure. PHYSICAL REVIEW LETTERS 2006; 96:035503. [PMID: 16486724 DOI: 10.1103/physrevlett.96.035503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2005] [Indexed: 05/06/2023]
Abstract
The first far-infrared absorption spectra of manganite samples at pressures P up to 10 GPa were obtained on La1-xCaxMnO3-y by use of synchrotron radiation. For x=0.25 and 0.20 (y=0), P promotes partial metallization at room temperature through a strong reduction of the insulating gap. An x=0.20 sample with y=0.08 does not show any charge delocalization effect up to 10 GPa. An Urbach-like model of disordered Jahn-Teller wells is shown to well fit the far-infrared band edge and allows one to obtain a reliable pressure dependence of the energy gap.
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Affiliation(s)
- A Sacchetti
- Coherentia CNR-INFM and Dipartimento di Fisica, Università di Roma La Sapienza, Piazzale Aldo Moro 2, I-00185 Roma, Italy
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