A methodology to evaluate the specific heat of metallic thin films at constant pressure and 300 K by means of the heating profile is proposed. Changes on the electrical resistance of metallic films after the application of short electric pulses (20–500 μs) are correlated with changes of temperature of the films. Electric pulses are applied on films by an implemented electronic device. A proposed analytical thermal model predicts the correlation between the duration of the electric pulses and the thermal profiles of the film/substrate systems. The analytical thermal model and the measured thermal profiles results are useful to evaluate the specific heat of films. Following this methodology, Au and Al nanofilms evaporated on glass substrates were analyzed. Results indicate that specific heat values of Au films decrease from (229 ± 15) J/kg K to (125 ± 8) J/kg K, and for Al films from (1444 ± 89) J/kg K to (947 ± 53) J/kg K, for film thicknesses from 20 to 200 nm.
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Research-Article
Specific Heat Determination of Metallic Thin Films at Room Conditions
J. M. Lugo,
J. M. Lugo
1
Departamento de Física Aplicada,
Centro de Investigación y de Estudios
A.P. 73-Cordemex,
e-mail: jquintal@mda.cinvestav.mx
Centro de Investigación y de Estudios
Avanzados del IPN-Unidad Mérida
,A.P. 73-Cordemex,
Mérida Yucatán 97310
, Mexico
e-mail: jquintal@mda.cinvestav.mx
1Corresponding author.
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V. Rejón,
V. Rejón
Departamento de Física Aplicada,
Centro de Investigación y de Estudios
A.P. 73-Cordemex,
Centro de Investigación y de Estudios
Avanzados del IPN-Unidad Mérida
,A.P. 73-Cordemex,
Mérida Yucatán 97310
, Mexico
Search for other works by this author on:
A. I. Oliva
A. I. Oliva
Departamento de Física Aplicada,
Centro de Investigación y de Estudios
A.P. 73-Cordemex,
Centro de Investigación y de Estudios
Avanzados del IPN-Unidad Mérida
,A.P. 73-Cordemex,
Mérida Yucatán 97310
, Mexico
Search for other works by this author on:
J. M. Lugo
Departamento de Física Aplicada,
Centro de Investigación y de Estudios
A.P. 73-Cordemex,
e-mail: jquintal@mda.cinvestav.mx
Centro de Investigación y de Estudios
Avanzados del IPN-Unidad Mérida
,A.P. 73-Cordemex,
Mérida Yucatán 97310
, Mexico
e-mail: jquintal@mda.cinvestav.mx
V. Rejón
Departamento de Física Aplicada,
Centro de Investigación y de Estudios
A.P. 73-Cordemex,
Centro de Investigación y de Estudios
Avanzados del IPN-Unidad Mérida
,A.P. 73-Cordemex,
Mérida Yucatán 97310
, Mexico
A. I. Oliva
Departamento de Física Aplicada,
Centro de Investigación y de Estudios
A.P. 73-Cordemex,
Centro de Investigación y de Estudios
Avanzados del IPN-Unidad Mérida
,A.P. 73-Cordemex,
Mérida Yucatán 97310
, Mexico
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received July 16, 2014; final manuscript received December 26, 2014; published online February 3, 2015. Assoc. Editor: Amy Fleischer.
J. Heat Transfer. May 2015, 137(5): 051601 (11 pages)
Published Online: May 1, 2015
Article history
Received:
July 16, 2014
Revision Received:
December 26, 2014
Online:
February 3, 2015
Citation
Lugo, J. M., Rejón, V., and Oliva, A. I. (May 1, 2015). "Specific Heat Determination of Metallic Thin Films at Room Conditions." ASME. J. Heat Transfer. May 2015; 137(5): 051601. https://doi.org/10.1115/1.4029595
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