Laurent Syavoch Bernard

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We report on a highly efficient growth of graphene using dehydrogenation of acetylene by an oxidative reaction with carbon dioxide. In few seconds, large-area of copper foil used as catalyst of the reaction is fully covered with graphene. The yield of the ...

We propose, fabricate, and experimentally demonstrate a circuit based on graphene field-effect transistors (GFETs) showing enhanced negative differential resistance (NDR) characteristics at room temperature. The proposed graphene NDR (GNDR) circuit consist ...

The thermal coarsening of titanate nanowires was investigated from room temperature to 1000 degrees C by AFM, SEM, XRD and Raman spectroscopy. Phase transformation kinetics and the external morphology were studied in two configurations: i) as individual an ...

We report a full study of graphene synthesis by CVD on Cu surface. Two CVD methods have been developed. The first is a static one, which yields monolayer of graphene at low pressure of methane in 3 minutes at 1000 C. The second one is an equimolar method w ...

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 ...

In this paper we demonstrate experimentally and discuss the negative differential resistance (NDR) in dual-gated graphene field effect transistors (GFETs) at room temperature for various channel lengths, ranging from 200 nm to 5 mu m. The GFETs were fabric ...

We report a detailed spectroscopic study of Ti3+ self-doped TiO2 nanowires prepared by high temperature annealing of the protonated titanate nanowires (TiONW) in hydrogen atmosphere. Hydrogenation causes a color change from white to cyan and a major increa ...

The first hybrid phototransistors are reported where the performance of a network of photoactive CH3NH3PbI3 nanowires is enhanced by CVD-grown monolayer graphene. These devices show responsivities as high as ≈2.6 × 106 A W- ...

Laurent Syavoch Bernard

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Functionalized graphene grown by oxidative dehydrogenation chemistry

Graphene Negative Differential Resistance Circuit With Voltage-Tunable High Performance at Room Temperature

Thermal coarsening of individual titanate nanowires and their assemblies: Surface vs. bulk diffusion

Graphene : from Growth to Devices

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

Room-Temperature Negative Differential Resistance in Graphene Field Effect Transistors: Experiments and Theory

Cyan titania nanowires: Spectroscopic study of the origin of the self-doping enhanced photocatalytic activity

Microengineered CH3NH3PbI3 Nanowire/Graphene Phototransistor for Low-Intensity Light Detection at Room Temperature

Negative Differential Resistance in Top-Gated Chemical Vapor Deposition Grown Graphene Transistors