TY - JOUR
T1 - Thermal images of small agricultural seeds obtained by photoacoustic and photopyroelectric microscopies
AU - Domínguez Pacheco, A.
AU - Hernández Aguilar, C.
AU - Cruz-Orea, A.
N1 - Funding Information:
Acknowledgments The authors acknowledge the partial economic support from CONACYT through Project No. 103632, and also the support of Instituto Politécnico Nacional through COFAA and EDI scholarships. We also thank Area de Producción de Semillas del Colegio de Postgraduados, Campus Montecillo and Photothermal Techniques Laboratory of Physics Department, CINVESTAV-IPN for support to develop the experiments of the present study. We also thank Ing. Esther Ayala, Ing. A.B. Soto, and Ing. M. Guerrero for their technical support at the Physics Department, CINVESTAV-IPN.
PY - 2013/5
Y1 - 2013/5
N2 - Photoacoustic (PA) and photopyroelectric microscopies were used to obtain photothermal images of small agricultural seeds. In the photoacoustic microscopy (PAM) technique, a tightly closed PA cell was used with an electret microphone as the sensor. In photopyroelectric microscopy (PPEM), the seeds were placed in contact with a pyroelectric (PE) sensor. From the experimental data, it was possible to obtain thermal images of the scanned samples from the amplitude and phase signals. In the present research, thermal images of small agricultural seeds were obtained by both techniques and compared. The experimental results show that the photothermal images obtained by PAM have better resolution than those obtained by PPEM. PAM images using the amplitude signal appear to be more sensitive to detect seed structures as was observed in the seed thermal images obtained in this study.
AB - Photoacoustic (PA) and photopyroelectric microscopies were used to obtain photothermal images of small agricultural seeds. In the photoacoustic microscopy (PAM) technique, a tightly closed PA cell was used with an electret microphone as the sensor. In photopyroelectric microscopy (PPEM), the seeds were placed in contact with a pyroelectric (PE) sensor. From the experimental data, it was possible to obtain thermal images of the scanned samples from the amplitude and phase signals. In the present research, thermal images of small agricultural seeds were obtained by both techniques and compared. The experimental results show that the photothermal images obtained by PAM have better resolution than those obtained by PPEM. PAM images using the amplitude signal appear to be more sensitive to detect seed structures as was observed in the seed thermal images obtained in this study.
KW - Agricultural
KW - Photoacoustic microscopy
KW - Photopyroelectric microscopy
KW - Thermal image
UR - http://www.scopus.com/inward/record.url?scp=84879798637&partnerID=8YFLogxK
U2 - 10.1007/s10765-012-1360-4
DO - 10.1007/s10765-012-1360-4
M3 - Artículo
SN - 0195-928X
VL - 34
SP - 972
EP - 978
JO - International Journal of Thermophysics
JF - International Journal of Thermophysics
IS - 5
ER -