Publications

• Communication dans un congrès

Performance evaluation of ultra-low frequency underwater acoustic projectors

Bertrand Dubus, Pascal Mosbah, Jean-Rémi Hartmann, Jacky Garcin

Ultra Low Frequency (ULF) underwater waves can travel great distance and are generally used in sonar or oceanography. To generate these waves, underwater transducers, utilized in the 10-400 Hz frequency range, have radiating surfaces whose dimensions are small with respect to the acoustic…

Acoustics 2013 New Delhi Technologies for a Quieter India, 2013, New Delhi, India. session TEA3 : Underwater Transducers, paper TEA3/05, 1133-1138. ⟨hal-01044818⟩

• Article dans une revue

In situ high-temperature characterization of AlN-based surface acoustic wave devices

T. Aubert, Jochen Bardong, Ouarda Legrani, O. Elmazria, M. Badreddine Assouar, Gudrun Bruckner, Abdelkrim Talbi

We report on in situ electrical measurements of surface acoustic wave delay lines based on AlN/sapphire structure and iridium interdigital transducers between 20 °C and 1050 °C under vacuum conditions. The devices show a great potential for temperature sensing applications. Burnout is only observed…

Journal of Applied Physics, 2013, 114 (1), pp.014505. ⟨10.1063/1.4812565⟩. ⟨hal-00871910⟩

• Article dans une revue

Modeling of high contrast partially electroded resonators by means of a polynomial approach

P.M. Rabotovao, F.E. Ratolojanahary, Jean-Etienne Lefebvre, A. Raherison, L. Elmaimouni, Tadeusz Gryba, J.G. Yu

Journal of Applied Physics, 2013, 114 (12), pp.124502. ⟨10.1063/1.4821768⟩. ⟨hal-00877665⟩

• Article dans une revue

Contribution of the buffer layer to the Raman spectrum of epitaxial graphene on SiC(0001)

F. Fromm, M.H. Oliveira, A. Molina-Sanchez, M. Hundhausen, J.M.J. Lopes, H. Riechert, L. Wirtz, T. Seyller

We report a Raman study of the so-called buffer layer with (6√3 × 6√3)R30◦ periodicity which forms the intrinsic interface structure between epitaxial graphene and SiC(0001). We show that this interface structure leads to a nonvanishing signal in the Raman spectrum at frequencies in the range of…

New Journal of Physics, 2013, 15, pp.043031-1-11. ⟨10.1088/1367-2630/15/4/043031⟩. ⟨hal-00823434⟩

• Article dans une revue

Highly efficient terahertz detection by optical mixing in a GaAs photoconductor

Emilien Peytavit, F. Pavanello, Guillaume Ducournau, Jean-Francois Lampin

Applied Physics Letters, 2013, 103, 201107, 4 p. ⟨10.1063/1.4830360⟩. ⟨hal-00903765⟩

• Article dans une revue

Terahertz detection in zero-bias InAs self-switching diodes at room temperature

A. Westlund, P. Sangare, Guillaume Ducournau, P.A. Nilsson, Christophe Gaquière, L. Desplanque, X. Wallart, J. Grahn

Applied Physics Letters, 2013, 103, pp.133504-1-4. ⟨10.1063/1.4821949⟩. ⟨hal-00872026⟩

• Article dans une revue

Band offsets at zincblende-wurtzite GaAs nanowire sidewall surfaces

Pierre Capiod, Tao Xu, Jean-Philippe Nys, Maxime Berthe, Gilles Patriarche, Liverios Lymperakis, J. Neugebauer, Philippe Caroff, Rafal E Dunin-Borkowski, Philipp Ebert, B. Grandidier

Applied Physics Letters, 2013, 103, pp.122104-1-4. ⟨10.1063/1.4821293⟩. ⟨hal-00871957⟩

• Article dans une revue

High quality factor mg-scale silicon mechanical resonators for 3-mode optoacoustic parametric amplifiers

F.A. Torres, P. Meng, L. Ju, C. Zhao, D.G. Blair, K.-Y. Liu, S. Chao, M. Martyniuk, Isabelle Roch-Jeune, R. Flaminio, C. Michel

Milligram-scale resonators have been shown to be suitable for the creation of 3-mode optoacoustic parametric amplifiers, based on a phenomena first predicted for advanced gravitational-wave detectors. To achieve practical optoacoustic parametric devices, high quality factor resonators are required…

Journal of Applied Physics, 2013, 114, pp.014506. ⟨10.1063/1.4812731⟩. ⟨in2p3-00859697⟩

• Article dans une revue

Improvement of the oxidation interface in an AlGaAs/AlxOy waveguide structure by using a GaAs/AlAs superlattice

J.Y. Song, S. Bouchoule, G. Patriarche, E. Galopin, A.M. Yacomotti, E. Cambril, Q.G. Kou, David Troadec, J.J. He, J.C. Harmand

The wet oxidation from the mesa sidewalls of AlGaAs/GaAs epitaxial structures is investigated in details. In addition to the intended lateral oxidation of the Al-rich buried layer, we observe a parasitic vertical oxidation of the adjacent layers of lower Al content. This vertical oxidation produces…

Physica Status Solidi A (applications and materials science), 2013, 210, pp.1171-1177. ⟨10.1002/pssa.201228770⟩. ⟨hal-00872060⟩

• Article dans une revue

Multiple exciton generation and ultrafast exciton dynamics in HgTe colloidal quantum dots

Ali Al-Otaify, Stephen V. Kershaw, Shuchi Gupta, Andrey L. Rogach, Guy Allan, Christophe Delerue, David J. Binks

The investigation of sub-nanosecond exciton dynamics in HgTe colloidal quantum dots using ultrafast transient absorption spectroscopy is reported. The transmittance change spectrum acquired immediately after pumping is dominated by a bleach blue-shifted by ∼200–300 nm from the photoluminescent…

Physical Chemistry Chemical Physics, 2013, 15, pp.16864-16873. ⟨10.1039/C3CP52574K⟩. ⟨hal-00871970⟩