Browsing by Author "Nestoros, Marios"
Now showing items 1-15 of 15
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Finite thickness and semi-infinite photothermal radiometric models for the characterization of semiconductors
Karmiotis, Y.; Nestoros, Marios; Christofides, Constantinos (1998)A comparative computational study of the finite thickness and semi-infinite photothermal radiometric model is carried out for silicon, germanium, and gallium arsenide. The sensitivity of the photothermal radiometric finite ...
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Laser photothermal diagnostics of genuine and counterfeit British and United States banknotes
Othonos, Andreas S.; Mandelis, Andreas; Nestoros, Marios; Christofides, Constantinos (1997)Laser-induced, frequency-scanned IR photothermal radiometry was used to investigate the thermophysical properties of the paper on which several genuine and counterfeit British (pound 10) and U.S. ($50, $100) currency bills ...
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Numerical investigation of linear and nonlinear Photothermal Radiometry on silicon wafers using a chebyshev spectral method
Papanicolaou, N. C.; Nestoros, Marios; Christofides, Constantinos (2007)
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Article
Photomodulated thermoreflectance microscopy applied on ion-implanted materials
Sherifi, C.; Papademetriou, M. D.; Nestoros, Marios; Christofides, Constantinos (2008)
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Photothermal hydrogen sensor: the technique, experimental process, and physicochemical analysis
Demetriou, Chrysanthi; Nestoros, Marios; Christofides, Constantinos (2008)The kinetics of hydrogen adsorption and desorption on palladium thin films was studied via photomodulated thermoreflectance measurements. The subsequent analysis based on a Langmuirian isothermal model supports dissociative ...
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A photothermal microscopy investigation of carrier transport in ion implanted silicon thin films under the action of external electric field
Nestoros, Marios; Mourouti, M.; Papanicolaou, N. C.; Christofides, Constantinos (2011)A series of ion implanted Si thin film pseudo-devices with various dimensions in the micrometer region was investigated for different values and orientations of an applied external electric field, utilizing photothermal ...
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Photothermal radiometric and spectroscopic measurements on silicon nitride thin films
Nestoros, Marios; Gutierrez-Llorente, A.; Othonos, Andreas S.; Christofides, Constantinos; Martinez-Duart, JM (1997)Thin films of silicon nitride of various thicknesses, deposited by radio frequency magnetron sputtering on silicon quartz substrate, have been characterized by laser-induced and frequency scanned photothermal radiometry. ...
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Photothermal radiometric study of implanted semiconductors
Christofides, Constantinos; Nestoros, Marios; Othonos, Andreas S. (2000)Ion implantation is a key technological process in modern microelectronics introduced as an alternative to diffusion for the semiconductor doping process [1]. However, disadvantages result from ion implantation such as ...
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Photothermal radiometry on nickel (pigmented aluminium oxide) selective solar absorbing surface coatings
Othonos, Andreas S.; Nestoros, Marios; Palmerio, D.; Christofides, Constantinos; Bes, R. S.; Traverse, J. P. (1998)Photothermal radiometry (PTR) is applied to characterize nickel-pigmented aluminium oxide solar absorbing coatings. A modulated laser beam is used to heat the solar samples. The subsequent emission of thermal radiation is ...
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Photothermal reflection signal versus temperature: Study of implanted Si wafers
Nestoros, Marios; Forget, BC; Seas, Antonios; Christofides, Constantinos (1996)A quantitative analysis of the temperature dependence (40 to 300 K) of the photothermal reflectance signal on crystalline and phosphorus implanted silicon wafers is presented. A theoretical model has been adapted for the ...
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Photothermal Reflection Versus Temperature - Quantitative-Analysis
Nestoros, Marios; FORGET, BC; Christofides, Constantinos; Seas, Antonios (1995)
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Thermoelectronic-wave coupling in laser photothermal theory of semiconductors at elevated temperatures
Mandelis, Andreas; Nestoros, Marios; Christofides, Constantinos (1997)A quantitative analysis of linear temperature-dependent coupled thermoelectronic diffusion waves in the generation of the laser-induced IR photothermal radiometric signal from a photoexcited, plasma-wave-dominated, ...
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Thermophysical characterization of commercial paper by laser infrared radiometry
Mandelis, Andreas; Nestoros, Marios; Othonos, Andreas S.; Christofides, Constantinos (1997)Laser-induced, frequency-scanned infrared photothermal radiometry (PTR) was used successfully in a noncontacting manner to characterize commercial-quality xerographic paper, which was impossible to characterize optically ...
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Two layer model for photothermal radiometry applied on semiconducting thin films
Nestoros, Marios; Karmiotis, Y.; Christofides, Constantinos (1997)A two layer model has been developed in order to study the dependence of the photothermal radiometric signal on the optoelectronic and thermophysical properties of a two layer semiconducting sample. In the following ...
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Article
Two-layer model for photomodulated thermoreflectance of semiconductor wafers
Christofides, Constantinos; Diakonos, Fotis K.; Seas, Antonios; Christou, Chris; Nestoros, Marios; Mandelis, Andreas (1996)A complete theoretical analysis of the laser photomodulated thermoreflectance signal from a two-layer semiconducting wafer is presented. It is shown that the electronic and thermal properties of a thin surface layer may ...