Andreas Mandelis - Academia.edu (original) (raw)
Andreas Mandelis is a Full Professor of Mechanical and IndustrialEngineering
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Papers by Andreas Mandelis
International Journal of Thermophysics, Oct 10, 2012
International journal of thermophysics, Mar 9, 2024
RSC Advances, 2016
Non-conventional (anomalous) current–voltage characteristics are reported with increasing frequen... more Non-conventional (anomalous) current–voltage characteristics are reported with increasing frequency for colloidal quantum dot-based (CQD) solar cells.
International Conference on Energy Harvesting, Storage, and Transfer
International Journal of Extreme Manufacturing, 2022
Active infrared thermography has gained increasing popularity for nondestructive testing and eval... more Active infrared thermography has gained increasing popularity for nondestructive testing and evaluation in various industrial fields, especially for composite structures. In this regard, thermal wave radar (TWR) imaging is recognized as the next-generation active thermography technology to obtain great resolution and depth range over the inspected objects. A critical aspect concerns the optimal test parameter selection to guarantee reliable quality assurance required for industrial products. In this work, single- and multiple-frequency TWR was investigated in a quantitative manner with the goal of optimizing the detection parameters in terms of probing range and lateral and depth resolution. The effects of test parameters, including sampling frequency, modulation frequency, chirp duration, chirp bandwidth, etc, were investigated in detail through experiments on a glass fiber reinforced polymer specimen with multi-scale diameter-to-depth ratio defects. This paper aims to help yield a...
Zeitschrift für Physikalische Chemie, 1998
Optics and Photonics News, 2002
Journal of Applied Physics, 1994
The extension of an earlier monolithic photopyroelectric spectroscopic model [A. Mandelis et al.,... more The extension of an earlier monolithic photopyroelectric spectroscopic model [A. Mandelis et al., Phys. Rev. B 48, 6808 (1993)] to include surface and bulk optical absorptions and the subsequent optical-to-thermal (nonradiative) energy conversion efficiencies associated with these sites has allowed the self-consistent determination of visible spectra of these quantities, using a very sensitive noncontact experimental configuration to obtain in-phase and quadrature photopyroelectric spectra of Ti:sapphire crystals of two thicknesses and figures of merit.
Journal of Alloys and Compounds, 1995
Le Journal de Physique IV, 1994
Canadian Journal of Physics, 1986
The spectroscopic information related to the optical-absorption coefficients of solids and liquid... more The spectroscopic information related to the optical-absorption coefficients of solids and liquids, which is contained in the signal-magnitude and time-delay channels of cross-correlation photoacoustic spectroscopy (CPAS), has been investigated. Powders of holmium oxide and aqueous solutions of black India ink of variable concentrations were used as solid and liquid samples, respectively. The experimental results were found to be in general agreement with a one-dimensional theoretical model of the CPAS-signal generation.
Applied Physics A Solids and Surfaces, 1985
Chemical Physics Letters, 1982
Journal of Applied Physics
A theoretical model of pulsed photothermal radiometry based on conduction-radiation theory is int... more A theoretical model of pulsed photothermal radiometry based on conduction-radiation theory is introduced for a two-layered medium with a first layer having optical and thermal properties different from those of the semi-infinite substrate. This geometry closely represents the optical and thermal properties of biotissues, a major intended application. The theory derives the spatial distribution of the frequency spectrum of the pulsed photothermal signal from the composite two-layer boundary-value problem and matches the spectral frequency domain results to the measured photothermal transients through an efficient inverse Fourier transformation algorithm, which involves the optical, thermal, and geometric parameters of the experimental system. This approach avoids the complicated and computationally expensive analytical Laplace transform approach usually adopted in similar studies and yields a complete conduction–radiation description of photothermal signals without simplifying, yet r...
International Journal of Thermophysics, Oct 10, 2012
International journal of thermophysics, Mar 9, 2024
RSC Advances, 2016
Non-conventional (anomalous) current–voltage characteristics are reported with increasing frequen... more Non-conventional (anomalous) current–voltage characteristics are reported with increasing frequency for colloidal quantum dot-based (CQD) solar cells.
International Conference on Energy Harvesting, Storage, and Transfer
International Journal of Extreme Manufacturing, 2022
Active infrared thermography has gained increasing popularity for nondestructive testing and eval... more Active infrared thermography has gained increasing popularity for nondestructive testing and evaluation in various industrial fields, especially for composite structures. In this regard, thermal wave radar (TWR) imaging is recognized as the next-generation active thermography technology to obtain great resolution and depth range over the inspected objects. A critical aspect concerns the optimal test parameter selection to guarantee reliable quality assurance required for industrial products. In this work, single- and multiple-frequency TWR was investigated in a quantitative manner with the goal of optimizing the detection parameters in terms of probing range and lateral and depth resolution. The effects of test parameters, including sampling frequency, modulation frequency, chirp duration, chirp bandwidth, etc, were investigated in detail through experiments on a glass fiber reinforced polymer specimen with multi-scale diameter-to-depth ratio defects. This paper aims to help yield a...
Zeitschrift für Physikalische Chemie, 1998
Optics and Photonics News, 2002
Journal of Applied Physics, 1994
The extension of an earlier monolithic photopyroelectric spectroscopic model [A. Mandelis et al.,... more The extension of an earlier monolithic photopyroelectric spectroscopic model [A. Mandelis et al., Phys. Rev. B 48, 6808 (1993)] to include surface and bulk optical absorptions and the subsequent optical-to-thermal (nonradiative) energy conversion efficiencies associated with these sites has allowed the self-consistent determination of visible spectra of these quantities, using a very sensitive noncontact experimental configuration to obtain in-phase and quadrature photopyroelectric spectra of Ti:sapphire crystals of two thicknesses and figures of merit.
Journal of Alloys and Compounds, 1995
Le Journal de Physique IV, 1994
Canadian Journal of Physics, 1986
The spectroscopic information related to the optical-absorption coefficients of solids and liquid... more The spectroscopic information related to the optical-absorption coefficients of solids and liquids, which is contained in the signal-magnitude and time-delay channels of cross-correlation photoacoustic spectroscopy (CPAS), has been investigated. Powders of holmium oxide and aqueous solutions of black India ink of variable concentrations were used as solid and liquid samples, respectively. The experimental results were found to be in general agreement with a one-dimensional theoretical model of the CPAS-signal generation.
Applied Physics A Solids and Surfaces, 1985
Chemical Physics Letters, 1982
Journal of Applied Physics
A theoretical model of pulsed photothermal radiometry based on conduction-radiation theory is int... more A theoretical model of pulsed photothermal radiometry based on conduction-radiation theory is introduced for a two-layered medium with a first layer having optical and thermal properties different from those of the semi-infinite substrate. This geometry closely represents the optical and thermal properties of biotissues, a major intended application. The theory derives the spatial distribution of the frequency spectrum of the pulsed photothermal signal from the composite two-layer boundary-value problem and matches the spectral frequency domain results to the measured photothermal transients through an efficient inverse Fourier transformation algorithm, which involves the optical, thermal, and geometric parameters of the experimental system. This approach avoids the complicated and computationally expensive analytical Laplace transform approach usually adopted in similar studies and yields a complete conduction–radiation description of photothermal signals without simplifying, yet r...