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Christofides, Constantinos

Computed

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Research Profile

Latest Publications

1.
2010

Othonos Andreas; Zervos Matthew; Christofides Constantinos

A systematic investigation into the conversion of β-Ga2O3 to GaN nanowires using NH3 and H2: Effects on the photoluminescence properties
J. Appl. Phys. 108, 124319 (2010)
Department of Physics, Research Center of Ultrafast Science, University of Cyprus, P.O. Box 20537, Nicosia 1678, Cyprus
2.
2010

Othonos Andreas; Zervos Matthew; Christofides Constantinos

Carrier dynamics in β-Ga2O3 nanowires
J. Appl. Phys. 108, 124302 (2010)
Department of Physics, Research Center of Ultrafast Science, University of Cyprus, P.O. Box 20537, Nicosia 1678, Cyprus
3.
2009

Zeinalipour-Yazdi Constantinos D.; Christofides Constantinos

Linear correlation between binding energy and Young’s modulus in graphene nanoribbons
J. Appl. Phys. 106, 054318 (2009)
Department of Chemistry, University of Cyprus, Nicosia 1678, Cyprus

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All Publications

1.
2010

Othonos Andreas; Zervos Matthew; Christofides Constantinos

A systematic investigation into the conversion of β-Ga2O3 to GaN nanowires using NH3 and H2: Effects on the photoluminescence properties
J. Appl. Phys. 108, 124319 (2010)
Department of Physics, Research Center of Ultrafast Science, University of Cyprus, P.O. Box 20537, Nicosia 1678, Cyprus
2.
2010

Othonos Andreas; Zervos Matthew; Christofides Constantinos

Carrier dynamics in β-Ga2O3 nanowires
J. Appl. Phys. 108, 124302 (2010)
Department of Physics, Research Center of Ultrafast Science, University of Cyprus, P.O. Box 20537, Nicosia 1678, Cyprus
3.
2009

Zeinalipour-Yazdi Constantinos D.; Christofides Constantinos

Linear correlation between binding energy and Young’s modulus in graphene nanoribbons
J. Appl. Phys. 106, 054318 (2009)
Department of Chemistry, University of Cyprus, Nicosia 1678, Cyprus
4.
2007

Lioudakis Emmanouil; Antoniou Antreas; Othonos Andreas; Christofides Constantinos; Nassiopoulou A. G.; Lioutas Ch. B.; Frangis N.

The role of surface vibrations and quantum confinement effect to the optical properties of very thin nanocrystalline silicon films
J. Appl. Phys. 102, 083534 (2007)
Research Center of Ultrafast Science, Department of Physics, University of Cyprus, P.O. Box 20537, 1672 Nicosia, Cyprus and IMEL/NCSR Demokritos, P.O. Box 60228, 15310 Aghia Paraskeri, Athens, Greece;
5.
2006

Lioudakis Emmanouil; Christofides Constantinos; Othonos Andreas

Study of the annealing kinetic effect and implantation energy on phosphorus-implanted silicon wafers using spectroscopic ellipsometry
J. Appl. Phys. 99, 123514 (2006)
Photonics and Optoelectronics Research Laboratory, Department of Physics, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
6.
2003

Othonos Andreas; Christofides Constantinos; Loizidou Efi

High-temperature photomodulated thermoreflectance measurements on phosphorus implanted and annealed silicon wafers
J. Appl. Phys. 94, 7121 (2003)
Photonics and Optoelectronics Research Laboratory, Department of Physics, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus;
7.
2003

Christofides Constantinos; Othonos Andreas; Loizidou Efi

Photomodulated thermoreflectance investigation at elevated temperatures: plasma versus thermal effect
Appl. Phys. Lett. 82, 1132 (2003)
Department of Physics, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus;
8.
2003

Othonos Andreas; Christofides Constantinos

Photomodulated thermoreflectance detection of hydrogen at elevated temperatures: a detection limit
Appl. Phys. Lett. 82, 904 (2003)
Department of Physics, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus;
9.
2002

Othonos Andreas; Christofides Constantinos

Ultrafast dynamics in phosphorus-implanted silicon wafers: The effects of annealing
Phys. Rev. B 66, 085206 (2002)
Department of Physics, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus;
10.
2002

Christofides Constantinos; Othonos Andreas; Loizidou Efi

Influence of temperature and modulation frequency on the thermal activation coupling term in laser photothermal theory
J. Appl. Phys. 92, 1280 (2002)
Department of Physics, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
11.
2002

Othonos Andreas; Christofides Constantinos

Spatial dependence of ultrafast carrier recombination centers of phosphorus-implanted and annealed silicon wafers
Appl. Phys. Lett. 81, 856 (2002)
Department of Physics, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus;
12.
2002

Kalli K.; Othonos A.; Christofides C.

Characterization of reflectivity inversion, α- and β-phase transitions and nanostructure formation in hydrogen activated thin Pd films on silicon based substrates
J. Appl. Phys. 91, 3829 (2002)
Department of Physics, University of Cyprus, P.O. Box 20537, Nicosia 1678, Cyprus
13.
1999

Kalli K.; Othonos A.; Christofides C.; Tardiff F.

Nondestructive evaluation of metal contaminated silicon wafers using radiometric measurements
J. Appl. Phys. 86, 3064 (1999)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, P. O. Box 537, 1678, Nicosia, Cyprus
14.
1999

Kalli K.; Othonos A.; Christofides C.; Tardiff F.

Photothermal radiometric measurements on metal contaminated silicon wafers
AIP Conf. Proc. 463, 386 (1999)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, P.O. Box 537, 1678, Nicosia, Cyprus
15.
1999

Kalli K.; Othonos A.; Christofides C.

Thermal wave hydrogen gas sensor characterized via photothermal deflection measurements
AIP Conf. Proc. 463, 247 (1999)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, P.O. Box 537, 1678 Nicosia, Cyprus;
16.
1999

Kalli K.; Othonos A.; Christofides C.; Spetz A.; Lundström I.

Room temperature hydrogen gas detection with optically thin palladium films on silicon oxide using photomodulated thermoreflectance
AIP Conf. Proc. 463, 220 (1999)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, P.O. Box 537, 1678 Nicosia, Cyprus;
17.
1998

Kalli Kyriacos; Othonos Andreas; Christofides Constantinos; Lloyd Spetz Anita; Lundström Ingemar

Temperature-induced reflectivity changes and activation of hydrogen sensitive optically thin palladium films on silicon oxide
Rev. Sci. Instrum. 69, 3331 (1998)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, 1678 Nicosia, Cyprus;
18.
1998

Kalli K.; Spetz A.; Christofides C.; Othonos A.; Lundström I.

Photomodulated thermoreflectance detection of hydrogen gas using optically thin palladium film on silicon oxide
Rev. Sci. Instrum. 69, 1505 (1998)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, P.O. Box 537, 1678 Nicosia, Cyprus;
19.
1998

Karmiotis Y.; Nestoros M.; Christofides C.

Finite thickness and semi-infinite photothermal radiometric models for the characterization of semiconductors
Appl. Phys. Lett. 72, 695 (1998)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, 1678 Nicosia, Cyprus;
20.
1997

Nestoros M.; Karmiotis Y.; Christofides C.

Two layer model for photothermal radiometry applied on semiconducting thin films
J. Appl. Phys. 82, 6220 (1997)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, P.O. Box 537, 1678 Nicosia, Cyprus
21.
1997

Nestoros M.; Gutierrez-Llorente A.; Othonos A.; Christofides C.; Martinez-Duart J. M.

Photothermal radiometric and spectroscopic measurements on silicon nitride thin films
J. Appl. Phys. 82, 6215 (1997)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, P.O. Box 537, 1678 Nicosia, Cyprus
22.
1997

Kalli Kyriacos; Othonos Andreas; Christofides Constantinos

Hydrogen gas detection via photothermal deflection measurement
Rev. Sci. Instrum. 68, 3544 (1997)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, 1678 Nicosia, Cyprus
23.
1997

Mandelis Andreas; Nestoros Marios; Christofides Constantinos

Thermoelectronic-wave coupling in laser photothermal theory of semiconductors at elevated temperatures
Opt. Eng. 36, 459 (1997)
University of Cyprus Faculty of Pure and Applied Sciences Department of Natural Sciences P.O. Box 537 CY-1678 Nicosia, Cyprus mandelis@me.utoronto.ca ;
24.
1997

Othonos Andreas; Mandelis Andreas; Nestoros Marios; Christofides Constantinos

Laser photothermal diagnostics of genuine and counterfeit British and United States banknotes
Opt. Eng. 36, 400 (1997)
University of Cyprus Faculty of Pure and Applied Sciences Department of Natural Sciences P.O. Box 537 CY-1678 Nicosia, Cyprus mandelis@me.utoronto.ca ;
25.
1996

Mandelis A.; Othonos A.; Christofides C.; Boussey-Said J.

Non‐contacting measurements of photocarrier lifetimes in bulk‐ and polycrystalline thin‐film Si photoconductive devices by photothermal radiometry
J. Appl. Phys. 80, 5332 (1996)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, P.O. Box 537, Nicosia, Cyprus
26.
1996

Othonos Andreas; Christofides Constantinos; Mandelis Andreas

Photothermal radiometric investigation of implanted silicon: The influence of dose and thermal annealing
Appl. Phys. Lett. 69, 821 (1996)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, P.O. Box 537, 1678 Nicosia, Cyprus
27.
1996

Christofides C.; Diakonos F.; Seas A.; Christou C.; Nestoros M.; Mandelis A.

Two‐layer model for photomodulated thermoreflectance of semiconductor wafers
J. Appl. Phys. 80, 1713 (1996)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, P.O. Box 537, CY‐1678 Nicosia, Cyprus;
28.
1996

Seas Antonios; Christofides Constantinos; Munidasa Mahendra

Photothermal measurements on amorphous thin films deposited on crystalline silicon
Appl. Phys. Lett. 68, 538 (1996)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, P. O. Box 537, 1678 Nicosia, Cyprus
29.
1995

Othonos Andreas; Christofides Constantinos

Photoluminescence measurements on phosphorus implanted silicon: Annealing kinetics of defects
J. Appl. Phys. 78, 796 (1995)
The Ontario Laser and Lightwave Research Centre, University of Toronto, 60 St. George St., Toronto, Ontario M5S‐1A7, Canada;
30.
1995

Seas Antonios; Christofides Constantinos

Photothermal reflectance investigation of implanted silicon: The influence of thermal annealing
Appl. Phys. Lett. 66, 3346 (1995)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, P.O. Box 537, CY‐1678 Nicosia, Cyprus;
31.
1995

Nestoros Marios; Forget Benoi☒t C.; Christofides Constantinos; Seas Antonios

Photothermal reflection versus temperature: Quantitative analysis
Phys. Rev. B 51, 14115 (1995)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, P.O. Box 537, CY‐1678 Nicosia, Cyprus;
32.
1994

Othonos Andreas; Christofides Constantinos; Boussey-Said Joumana; Bisson Michel

Raman spectroscopy and spreading resistance analysis of phosphorus implanted and annealed silicon
J. Appl. Phys. 75, 8032 (1994)
Ontario Laser and Lightwave Research Center, University of Toronto, Toronto, Ontario M5S 1A7, Canada
33.
1994

Christofides Constantinos; Othonos Andreas; Bisson Michel; Boussey-Said Joumana

Optical spectroscopy on implanted and annealed silicon wafers: Plasma resonance wavelength
J. Appl. Phys. 75, 3377 (1994)
Department of Natural Sciences, Faculty of Pure and Applied Sciences, University of Cyprus, P. O. Box 537, Nicosia, Cyprus
34.
1993

Christofides C.; Rawski J.; Mandelis A.; Rehm S.

Photopyroelectric detection of hydrogen/oxygen mixtures
Rev. Sci. Instrum. 64, 3563 (1993)
Photothermal and Optoelectronic Diagnostics Laboratory, Department of Mechanical Engineering, and Center for Hydrogen and Electrochemical Studies (CHES), University of Toronto, Toronto, Ontario M5S 1A4, Canada;
35.
1991

Mandelis Andreas; Christofides Constantinos

Photothermal electrostatics of the Pd‐polyvinylidene fluoride photopyroelectric hydrogen gas sensor
J. Appl. Phys. 70, 4496 (1991)
Photoacoustic and Photothermal Sciences Laboratory, Department of Mechanical Engineering, and Center for Hydrogen and Electrochemical Studies (CHES), University of Toronto, Toronto, Ontario M5S 1A4, Canada
36.
1990

Mandelis Andreas; Christofides Constantinos

Surface hydrogen–palladium studies using a new photopyroelectric detector
J. Vac. Sci. Technol. A 8, 3980 (1990)
Photoacoustic and Photothermal Sciences Laboratory, Department of Mechanical Engineering, and Center for Hydrogen and Electrochemical Studies (CHES), University of Toronto, Toronto, Ontario M5S 1A4, Canada
37.
1990

Christofides Constantinos; Mandelis Andreas

Solid‐state sensors for trace hydrogen gas detection
J. Appl. Phys. 68, R1 (1990)
Photoacoustic and Photothermal Sciences Laboratory, Department of Mechanical Engineering, and Center for Hydrogen and Electrochemical Studies (CHES), University of Toronto, Toronto, Ontario M5S 1A4, Canada
38.
1990

Christofides Constantinos; Ghandi Kamyar; Mandelis Andreas; Wagner Robert E.

Infrared real‐time‐normalized photopyroelectric measurements of crystalline germanium; Instrumentation and spectroscopy
Rev. Sci. Instrum. 61, 2360 (1990)
Photoacoustic and Photothermal Sciences Laboratory, Department of Mechanical Engineering, and Ontario Laser and Lightwave Research Center, University of Toronto, Toronto, Ontario M5S1A4, Canada
39.
1990

Vitkin I. Alex; Christofides Constantinos; Mandelis Andreas

Photothermal reflectance investigation of processed silicon. II. Signal generation and lattice temperature dependence in ion‐implanted and amorphous thin layers
J. Appl. Phys. 67, 2822 (1990)
Photoacoustic and Photothermal Sciences Laboratory, Department of Mechanical Engineering and Ontario Laser and Lightwave Research Center, University Of Toronto, Toronto, Ontario M5S 1A4, Canada
40.
1990

Christofides Constantinos; Vitkin I. Alex; Mandelis Andreas

Photothermal reflectance investigation of processed silicon. I. Room‐temperature study of the induced damage and of the annealing kinetics of defects in ion‐implanted wafers
J. Appl. Phys. 67, 2815 (1990)
Photoacoustic and Photothermal Sciences Laboratory, Department of Mechanical Engineering and Ontario Laser and Lightwave Research Center, University of Toronto, Toronto, Ontario M5S 1A4, Canada
41.
1989

Christofides Constantinos; Mandelis Andreas

Operating characteristics and comparison of photopyroelectric and piezoelectric sensors for trace hydrogen gas detection. II. Piezoelectric quartz‐crystal microbalance sensor
J. Appl. Phys. 66, 3986 (1989)
Photoacoustic and Photothermal Sciences Laboratory, Department of Mechanical Engineering, and Center for Hydrogen and Electrochemical Studies (CHES), University of Toronto, Toronto, Ontario M5S 1A4, Canada
42.
1989

Christofides Constantinos; Mandelis Andreas

Operating characteristics and comparison of photopyroelectric and piezoelectric sensors for trace hydrogen gas detection. I. Development of a new photopyroelectric sensor
J. Appl. Phys. 66, 3975 (1989)
Photoacoustic and Photothermal Sciences Laboratory, Department of Mechanical Engineering, and Center for Hydrogen and Electrochemical Studies (CHES), University of Toronto, Toronto, Ontario M5S 1A4, Canada
43.
1989

Christofides Constantinos; Ghibaudo Gerard; Jaouen Herve

Electronic transport investigation of arsenic‐implanted silicon. II. Annealing kinetics of defects
J. Appl. Phys. 65, 4840 (1989)
Laboratoire de Physique des Composants à Semiconducteurs, Unité Associeé au Centre National de la Recherche Scientifique 840, Ecole Nationale Supérieure d’Electronique et de Radioélectricité, 23 rue de Martyrs, 38031 Grenoble, France;
44.
1989

Christofides Constantinos; Jaouen Herve; Ghibaudo Gerard

Electronic transport investigation of arsenic‐implanted silicon. I. Annealing influence on the transport coefficients
J. Appl. Phys. 65, 4832 (1989)
Laboratoire de Physique des Composants à Semiconducteurs, Unité Associeé au Centre National de la Recherche Scientifique 840, Ecole Nationale Supérieure d’Electronique et de Radioélectricité, 23 rue de Martyrs, 38031 Grenoble, France;
45.
1989

Vitkin I. Alex; Christofides Constantinos; Mandelis Andreas

Laser‐induced photothermal reflectance investigation of silicon damaged by arsenic ion implantation; A temperature study
Appl. Phys. Lett. 54, 2392 (1989)
Photoacoustic and Photothermal Sciences Laboratory, Department of Mechanical Engineering, and Ontario Laser and Lightwave Research Center, University of Toronto, Toronto, Ontario M5S 1A4, Canada;

Co-authors

Co-publications
25

Othonos, Andreas
15

Mandelis, Andreas
8

Kalli, Kyriacos
3

Lundström, Ingemar
3

Loizidou, Efi
2

Lioudakis, Emmanouil
2

Vitkin, I. Alex
2

Zervos, Matthew
2

Ghibaudo, Gérard
1

Zeinalipour-Yazdi, Constantinos
1

Lioutas, Ch. B.
1

Nassiopoulou, AG
1

Frangis, N
1

Forget, Benoît C.
1

Munidasa, Mahendra