Publications de Arnaud Magrez | EPFL Graph Search

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Carbon nanotubes (CNTs) are grown on PAN-based carbon fibers by means of catalytic chemical vapor deposition technique. By using catalytic thermal decomposition of hydrocarbon, CNTs can be grown in the temperature range of 650750 degrees C. However, carbon ...

We study the effect of electron beam irradiation on the bending modulus of multiwall carbon nanotubes grown by chemical vapor deposition. Atomic force microscopy observations of the nanotube deflection in the suspended-beam geometry suggest an internal, re ...

The statistical analysis of the length distribution of catalytic chemical vapour deposition synthesized multi-walled carbon nanotubes cut by planetary ball milling is reported. The nanotube lengths follow a log-normal distribution in a broad range of grind ...

We report the synthesis of single crystals of a novel layered iridate Ba21Ir9O43 and present the crystallographic, transport, and magnetic properties of this material. The compound has a hexagonal structure with two iridium oxide layers stacked along the c ...

A method composing the following steps; (a) forming electrodes, (b) effecting a catalyst deposition onto some electrodes, (c) applying a CVD process for a selective growth of carbon nanomaterial onto the electrodes, (d) activating the nanomaterials. ...

We report magnetic properties of a 3d(9) (Cu2+) magnetic insulator Cu2OSO4 measured on both powder and single crystal. The magnetic atoms of this compound form layers whose geometry can be described either as a system of chains coupled through dimers or as ...

Topological spin textures such as skyrmions hold high potential for use as magnetically active elements in diverse near-future applications. While skyrmions in metallic multilayers attract great attention in this context, unleashing the myriad potential of ...

Nanocomposite SnO2/multiwall-carbon-nanotubes were prepared by the sol-gel method. The morphology of prepared nanocomposite powder was investigated by scanning electron microscopy. Energy-dispersive X-ray and X-ray diffraction analyses were carried out, th ...

The growth kinetics of one-dimensional single-crystalline KNbO3 nanostructures (nanowires and nanofingers, the latter understood as defective nanowires) prepared by hydrothermal processing routes has been theoretically studied. A model taking into account ...

Since their discovery, carbon nanotubes (CNTs) have attracted intense attention to broad range of potential applications. In contrast to the 1D isolated single-walled carbon nanotubes (SWCNT), 2D films or bundles made of thousands of tubes have been introd ...

We report on the low-frequency electronic noise properties of individual multi-walled carbon nanotubes (CNTs). We present experimental evidence of the key role played by the structural quality of the tube and its gaseous environment on the excess noise lev ...

Perovskite alkaline niobates, due to their strong nonlinear optical properties, including birefringence and the capability to produce second-harmonic generation (SHG) signals, attract a lot of attention as potential candidates for applications as local nan ...

SU8-carbon nanotube composites have been produced to enhance the mechanical, electrical, and thermal properties of SU8 photoresists. Homogeneous composites materials have been obtained when multiwalled carbon nanotubes (MWCNTs) functionalized with COOH gro ...

The cellular toxicity of carbon-based nanomaterials was studied as a function of their aspect ratio and surface chemistry. These structures were multiwalled carbon nanotubes, carbon nanofibers, and carbon nanoparticles. Their toxicity was tested in vitro o ...

The resistivity of a very high quality anatase TiO2 doped with 6% of Nb was measured from 300K down to 40 mK. No sign of superconductivity was detected. Instead, a minute quantity of cation vacancies resulted in a Kondo scattering. Measurements of thermo-e ...

Graphene-based SU8 nanocomposite is developed as a new conductive polymer, which benefits from remarkable electrical conductivity of graphene, along with photo-pattern-ability and transparency of SU8. Well defined structures with minimal resolution of 10 m ...

Topological magnon bands enable uni-directional edge transport without backscattering, enhancing the robustness of magnonic circuits and providing a novel platform for exploring quantum transport phenomena. Magnetic skyrmion lattices, in particular, host a ...

Coupling of spin waves with electromagnetic cavity field is demonstrated in an antiferromagnet, dysprosium ferrite (DyFeO3). By measuring transmission at 0.2-0.35 THz and sweeping sample temperature, magnon-photon coupling signatures were found at crossing ...

We report a novel synthesis route of homogeneously manganese-doped TiO2 nanotubes in a broad concentration range. The scroll-type trititanate (H2Ti3O7) nanotubes prepared by hydrothermal synthesis were used as precursors. Mn2+ ions were introduced by an io ...

We propose and experimentally demonstrate a novel circuit based on graphene FETs (GFETs) showing excellent negative differential resistance (NDR) characteristics at room temperature. The proposed GNDR circuit exploits a closed loop connection of 1-GFET wit ...

Arnaud Magrez

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Growth of carbon nanotubes on carbon fibers without strength degradation

Reinforcing multiwall carbon nanotubes by electron beam irradiation

Tuning the length dispersion of multi-walled carbon nanotubes by ball milling

Possibility of an unconventional spin state of Ir4+ in Ba21Ir9O43 single crystal

Close and selective integration of carbon nanomaterials by cvd onto working microelectrodes of multi sensing electrochemical biosensors

Ferrimagnetic 120 degrees magnetic structure in Cu2OSO4

Tuning Topological Spin Textures in Size-Tailored Chiral Magnet Insulator Particles

Manufacturing and investigations of i-butane sensor made of SnO2/multiwall-carbon-nanotube nanocomposite

Growth kinetics of one-dimensional KNbO3 nanostructures by hydrothermal processing routes

Photosynthetic reaction centre/carbon nanotube bundle composites

Electronic fluctuations in multi-walled carbon nanotubes

Single potassium niobate nano/microsized particles as local mechano-optical Brownian probes

Preparation and characterization of SU8-carbon nanotube composites

Cellular toxicity of carbon-based nanomaterials

Low temperature resistivity, thermoelectricity, and power factor of Nb doped anatase TiO2

Electrical conduction of photo-patternable SU8-graphene composites

Short-wave magnons with multipole spin precession detected in the topological bands of a skyrmion lattice

Spin-wave coupling to electromagnetic cavity fields in dysposium ferrite

Synthesis of Homogeneous Manganese-Doped Titanium Oxide Nanotubes from Titanate Precursors

Graphene negative differential resistance (GNDR) circuit with enhanced performance at room temperature