Two-dimensional imaging of thermal diffusivity in metals by scanning photodeflection detection

We present a technique that retrieves the thermal diffusivity of metallic samples in a two-dimensional map with micrometer resolution. The technique uses a photothermal method based on the deflection of a probe beam after heating the surface with a modulated pump. After adequate calibration, the tim...

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Autores principales: Archiopoli, U.C., Mingolo, N., Martínez, O.E.
Formato: JOUR
Materias:
Cross section
Deflection signals
Frequency dependence
Metallic samples
Photodeflection detection
Photothermal methods
Probe beam
Pump modulation
Sample location
Steel samples
Two-dimensional imaging
Two-dimensional map
Calibration
Pumps
Thermal diffusion
Thermal diffusivity
Two dimensional
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00218979_v107_n2_p_Archiopoli
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00218979_v107_n2_p_Archiopoli2023-10-03T14:22:08Z Two-dimensional imaging of thermal diffusivity in metals by scanning photodeflection detection Archiopoli, U.C. Mingolo, N. Martínez, O.E. Cross section Deflection signals Frequency dependence Metallic samples Photodeflection detection Photothermal methods Probe beam Pump modulation Sample location Steel samples Two-dimensional imaging Two-dimensional map Calibration Pumps Thermal diffusion Thermal diffusivity Two dimensional We present a technique that retrieves the thermal diffusivity of metallic samples in a two-dimensional map with micrometer resolution. The technique uses a photothermal method based on the deflection of a probe beam after heating the surface with a modulated pump. After adequate calibration, the time delay between the pump modulation and the deflection modulation provides direct information on the local thermal diffusivity. The calibration is carried out by measuring the frequency dependence of the deflection signal at several sample locations. The capabilities of the technique are illustrated with the measurement of a cross section of a surface treated steel sample. © 2010 American Institute of Physics. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00218979_v107_n2_p_Archiopoli
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cross section
Deflection signals
Frequency dependence
Metallic samples
Photodeflection detection
Photothermal methods
Probe beam
Pump modulation
Sample location
Steel samples
Two-dimensional imaging
Two-dimensional map
Calibration
Pumps
Thermal diffusion
Thermal diffusivity
Two dimensional
spellingShingle Cross section
Deflection signals
Frequency dependence
Metallic samples
Photodeflection detection
Photothermal methods
Probe beam
Pump modulation
Sample location
Steel samples
Two-dimensional imaging
Two-dimensional map
Calibration
Pumps
Thermal diffusion
Thermal diffusivity
Two dimensional
Archiopoli, U.C.
Mingolo, N.
Martínez, O.E.
Two-dimensional imaging of thermal diffusivity in metals by scanning photodeflection detection
topic_facet Cross section
Deflection signals
Frequency dependence
Metallic samples
Photodeflection detection
Photothermal methods
Probe beam
Pump modulation
Sample location
Steel samples
Two-dimensional imaging
Two-dimensional map
Calibration
Pumps
Thermal diffusion
Thermal diffusivity
Two dimensional
description We present a technique that retrieves the thermal diffusivity of metallic samples in a two-dimensional map with micrometer resolution. The technique uses a photothermal method based on the deflection of a probe beam after heating the surface with a modulated pump. After adequate calibration, the time delay between the pump modulation and the deflection modulation provides direct information on the local thermal diffusivity. The calibration is carried out by measuring the frequency dependence of the deflection signal at several sample locations. The capabilities of the technique are illustrated with the measurement of a cross section of a surface treated steel sample. © 2010 American Institute of Physics.
format JOUR
author Archiopoli, U.C.
Mingolo, N.
Martínez, O.E.
author_facet Archiopoli, U.C.
Mingolo, N.
Martínez, O.E.
author_sort Archiopoli, U.C.
title Two-dimensional imaging of thermal diffusivity in metals by scanning photodeflection detection
title_short Two-dimensional imaging of thermal diffusivity in metals by scanning photodeflection detection
title_full Two-dimensional imaging of thermal diffusivity in metals by scanning photodeflection detection
title_fullStr Two-dimensional imaging of thermal diffusivity in metals by scanning photodeflection detection
title_full_unstemmed Two-dimensional imaging of thermal diffusivity in metals by scanning photodeflection detection
title_sort two-dimensional imaging of thermal diffusivity in metals by scanning photodeflection detection
url http://hdl.handle.net/20.500.12110/paper_00218979_v107_n2_p_Archiopoli
work_keys_str_mv AT archiopoliuc twodimensionalimagingofthermaldiffusivityinmetalsbyscanningphotodeflectiondetection
AT mingolon twodimensionalimagingofthermaldiffusivityinmetalsbyscanningphotodeflectiondetection
AT martinezoe twodimensionalimagingofthermaldiffusivityinmetalsbyscanningphotodeflectiondetection
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