TY - JOUR
T1 - Self-normalized photoacoustic technique for thermo-optical characterization of samples mounted between transparent media
AU - Balderas-López, J. A.
AU - Díaz-Reyes, J.
AU - Jaime-Fonseca, M. R.
AU - Martínez-Pérez, L.
AU - Pescador-Rojas, J. A.
N1 - Publisher Copyright:
© 2016 IOP Publishing Ltd.
PY - 2016/1/26
Y1 - 2016/1/26
N2 - A self-normalized photoacoustic technique for thermo-optical characterization of materials, mounted between transparent media, is presented. It involves a complex ratio of photoacoustic signals in transmission and front configurations, taking the modulation frequency as the only variable. The analytical solutions for the corresponding 1D heat diffusion problems are analyzed to provide suitable methodologies for measuring the optical absorption coefficients and thermal diffusivity of such samples. This methodology was tested by measuring the optical absorption coefficient, at 660 nm, of methylene blue solutions at various concentrations and the thermal diffusivity of a black drawing ink sample. In addition, an approximated range of optical absorption coefficients, where this photoacoustic methodology is adequate, was established.
AB - A self-normalized photoacoustic technique for thermo-optical characterization of materials, mounted between transparent media, is presented. It involves a complex ratio of photoacoustic signals in transmission and front configurations, taking the modulation frequency as the only variable. The analytical solutions for the corresponding 1D heat diffusion problems are analyzed to provide suitable methodologies for measuring the optical absorption coefficients and thermal diffusivity of such samples. This methodology was tested by measuring the optical absorption coefficient, at 660 nm, of methylene blue solutions at various concentrations and the thermal diffusivity of a black drawing ink sample. In addition, an approximated range of optical absorption coefficients, where this photoacoustic methodology is adequate, was established.
KW - optical
KW - photoacoustic
KW - pigments
KW - self-normalization
KW - thermal
UR - http://www.scopus.com/inward/record.url?scp=84958818526&partnerID=8YFLogxK
U2 - 10.1088/0957-0233/27/3/035204
DO - 10.1088/0957-0233/27/3/035204
M3 - Artículo
SN - 0957-0233
VL - 27
JO - Measurement Science and Technology
JF - Measurement Science and Technology
IS - 3
M1 - 035204
ER -