Alexandre Anguelouch

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Cells respond to mechanical forces whether applied externally or generated internally via the cytoskeleton. To study the cellular response to forces separately, we applied external forces to cells via microfabricated magnetic posts containing cobalt nanowires interspersed among an array of elastomeric posts, which acted as independent sensors to cellular(More)
Andreev reflection at a Pb/CrO(2) point contact has been used to determine the spin polarization of single-crystal CrO(2) films made by chemical vapor deposition. The spin polarization is found to be 0.96 +/- 0.01, which confirms that CrO(2) is a half-metallic ferromagnet, as theoretically predicted.
We have applied photoexcitation by ultrashort laser pulses to single crystal thin CrO(2) films to trigger coherent transient magnetization rotation on a subnanosecond time scale, in macroscale single domains. Moreover, by applying the photoexcitation by pairs of temporally separated pump pulses, the transient precession of the magnetization can be phase(More)
The detection of ferromagnetic Ni nanowires with integrated giant magnetoresistance sensors is investigated for possible use in magnetic biosensing. Single nanowires with magnetic moments at least as small as 1.5/spl times/10/sup -10/ emu are readily detectable in a zero-applied field. The signal is a linear function of the number of nanowires, making the(More)
Chromium dioxide (CrO2) thin films of different thicknesses (120–2600 A) have been grown epitaxially on (100)-oriented TiO2 substrates by the chemical vapor deposition technique. The thicker films, with a Curie temperature of 395 K, exhibit in-plane magnetocrystalline anisotropy with the magnetic easy axis along the -axis direction. At low temperatures, the(More)
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