Browsing by Subject "Absorption"

Article

Carrier dynamics in InS nanowires grown via chemical vapor deposition

Othonos, A.; Zervos, Matthew (2010)

Transient femtosecond absorption spectroscopy and timecorrelating single photon counting (TCSPC) photoluminescence (PL) were employed to study InS nanowires (NWs) grown by chemical vapor deposition (CVD) and determine the ...

Article

Carrier dynamics in Β-Ga2O3 nanowires

Othonos, A.; Zervos, Matthew; Christofides, C. (2010)

Carrier dynamics have been investigated in Β-Ga2O 3 nanowires (NWs) grown by the vapor-liquid-solid mechanism, using ultrashort transient absorption spectroscopy in conjunction with time-correlating single photon counting ...

Article

Carrier relaxation dynamics in SnxNy nanowires grown by chemical vapor deposition

Othonos, A.; Zervos, Matthew (2009)

Carrier relaxation dynamics in tin nitride (SnxNy) nanowires have been investigated using femtosecond transient absorption spectroscopy. The nanowires were grown directly on quartz using chemical vapor deposition and had ...

Article

Defect states of chemical vapor deposition grown GaN nanowires: Effects and mechanisms in the relaxation of carriers

Tsokkou, D.; Othonos, A.; Zervos, Matthew (2009)

Carrier relaxation in GaN nanowires, grown by atmospheric pressure chemical vapor deposition, via direct nitridation of Ga with NH3 at 950 °C has been investigated in detail. Differential absorption measurements reveal a ...

Article

Femtosecond carrier dynamics in In 2O 3 nanocrystals

Othonos, A.; Zervos, Matthew; Tsokkou, D. (2009)

We have studied carrier dynamics in In 2O 3 nanocrystals grown on a quartz substrate using chemical vapor deposition. Transient differential absorption measurements have been employed to investigate the relaxation dynamics ...

Article

An inverse method to assign receptances by using classical vibration absorbers

Zhu, J.; Mottershead, J. E.; Kyprianou, Andreas (2009)

The classical mass-spring absorber can be thought of as a very simple structural modification. In this paper the inverse problem of assigning receptances to a dynamic system by using one or more simple mass-spring absorbers ...

Article

Minority-spin band parameters in a NiMnSb thin film determined by spectral conductivity

Grigorescu, C. E. A.; Trodahl, H. J.; Strickland, N. M.; Bittar, A.; Manea, S. A.; Giapintzakis, John; Monnereau, O.; Notonier, R.; Kennedy, V. J. (2004)

NiMnSb is expected to be a ferromagnetic half metal, an expectation that is based in part on band structure calculations. Here we report optical conductivity studies of the band structure for a film prepared by pulsed laser ...

Article

Preparation and nonlinear optical response of novel palladium-containing micellar nanohybrids

Iliopoulos, K.; Chatzikyriakos, G.; Demetriou, M.; Krasia-Christoforou, T.; Couris, S. (2011)

The synthesis and characterization of novel micellar nanohybrids with controllable sizes consisting of palladium nanosized core and covered by well-defined poly(lauryl methacrylate)-block-poly(2-(acetoacetoxy)ethyl ...

Article

Tin oxide nanowires: The influence of trap states on ultrafast carrier relaxation

Othonos, A.; Zervos, Matthew; Tsokkou, D. (2009)

We have studied the optical properties and carrier dynamics in SnO 2 nanowires (NWs) with an average radius of 50 nm that were grown via the vapor-liquid solid method. Transient differential absorption measurements have ...

Article

Traveling-wave photodetectors: A review

Rangel-Sharp, G.; Miles, R. E.; Iezekiel, Stavros (2004)

Article

Ultrafast carrier relaxation in inn nanowires grown by reactive vapor transport

Othonos, A.; Zervos, Matthew; Pervolaraki, M. (2009)

We have studied femtosecond carrier dynamics in InN nanowires grown by reactive vapor transport. Transient differential absorption measurements have been employed to investigate the relaxation dynamics of photogenerated ...