A5013675910- Neuroscience and Neural Engineering
- ZnO doping and properties
- Astrophysics and Cosmic Phenomena
- Neutrino Physics Research
- Advanced Memory and Neural Computing
- Radio Astronomy Observations and Technology
- Diamond and Carbon-based Materials Research
- Electronic and Structural Properties of Oxides
- Electrochemical sensors and biosensors
- Ga2O3 and related materials
- Conducting polymers and applications
- Copper-based nanomaterials and applications
- Multiferroics and related materials
- Semiconductor materials and devices
- Photoreceptor and optogenetics research
- EEG and Brain-Computer Interfaces
- Dark Matter and Cosmic Phenomena
- Magnetic Properties and Synthesis of Ferrites
- Carbon Nanotubes in Composites
- Nanopore and Nanochannel Transport Studies
- Ion-surface interactions and analysis
- Electrochemical Analysis and Applications
- Neural dynamics and brain function
- Graphene research and applications
- Magnetic and transport properties of perovskites and related materials
Inserm
2020-2025
Grenoble Institute of Neurosciences
2021-2025
Université Grenoble Alpes
2012-2025
Institut Català de Nanociència i Nanotecnologia
2017-2024
Institut des NanoSciences de Paris
2011-2024
Sorbonne Université
2012-2024
Centre National de la Recherche Scientifique
2011-2022
Septentrio (Belgium)
2021
Centre Hospitalier Universitaire de Grenoble
2021
Barcelona Institute for Science and Technology
2021
Abstract One of the critical factors determining performance neural interfaces is electrode material used to establish electrical communication with tissue, which needs meet strict electrical, electrochemical, mechanical, biological and microfabrication compatibility requirements. This work presents a nanoporous graphene-based thin-film technology its engineering form flexible interfaces. The developed allows fabrication small microelectrodes (25 µm diameter) while achieving low impedance...
We report results from 120 hours of livetime with the Goldstone Lunar Ultra-high energy neutrino Experiment (GLUE). The experiment searches for <10 ns microwave pulses lunar regolith, appearing in coincidence at two large radio telescopes separated by 22 km and linked optical fiber. Such would arise subsurface electromagnetic cascades induced interactions >= 100 EeV neutrinos regolith. No candidates are yet seen, implied limits constrain several current models ultra-high fluxes.
We report new limits on cosmic neutrino fluxes from the test flight of Antarctic Impulsive Transient Antenna (ANITA) experiment, which completed an 18.4 day a prototype long-duration balloon payload, called ANITA-lite, in early 2004. search for impulsive events that could be associated with ultrahigh energy interactions ice and derive constrain several models rule out long-standing -burst model.
We report on observations of coherent, impulsive radio Cherenkov radiation from electromagnetic showers in solid ice. This is the first observation Askaryan effect As part complete validation process for ANITA experiment, we performed an experiment at Stanford Linear Accelerator Center June 2006 using a 7.5 metric ton ice target. measure time large-scale angular dependence pattern, major factor determining solid-angle acceptance ultrahigh-energy neutrino detectors.
We report on four radio-detected cosmic-ray (CR) or CR-like events observed with the Antarctic Impulsive Transient Antenna (ANITA), a NASA-sponsored long-duration balloon payload. Two of were previously identified as stratospheric CR air showers during ANITA-I flight. A third was detected ANITA-II Here we characteristics these three unusual events, which develop nearly horizontally, 20-30~km above surface Earth. In addition, fourth steeply upward-pointing radio event has consistent primary...
Abstract Brain–computer interfaces and neural prostheses based on the detection of electrocorticography (ECoG) signals are rapidly growing fields research. Several technologies currently competing to be first reach market; however, none them fulfill yet all requirements ideal interface with neurons. Thanks its biocompatibility, low dimensionality, mechanical flexibility, electronic properties, graphene is one most promising material candidates for interfacing. After discussing operation...
The electrode material is a key element in the design of long-term neural implants and neuroprostheses. To date, ideal offering high longevity, biocompatibility, low-noise recording stimulation capabilities remains to be found. We show that 3D-nanostructured boron doped diamond (BDD), an innovative consisting chemically stable with aspect ratio structure obtained by encapsulation carbon nanotube template within two BDD nanolayers, allows cell attachment, survival neurite extension. Further,...
We report initial results of the first flight Antarctic Impulsive Transient Antenna (ANITA-1) 2006-2007 Long Duration Balloon flight, which searched for evidence a diffuse flux cosmic neutrinos above energies E(nu) approximately 3 x 10(18) eV. ANITA-1 flew 35 days looking radio impulses due to Askaryan effect in neutrino-induced electromagnetic showers within ice sheets. here on our analysis, was performed as blind search data. No neutrino candidates are seen, with no detected physics...
We report on the formation and transport properties of ZnO thin films which are grown by pulsed-electron beam deposition under a low residual oxygen pressure (10−5 mbar). presenting metallic conductivity at room temperature, metal-semiconductor transition were epitaxially Al2O3 single crystal substrates for growth temperatures in 300–450 °C range. These results have been interpreted through quantum corrections to disordered oxide conductor, implying first high density carriers leading...
A suspended system for measuring the thermal properties of membranes is presented. The sensitive measurement based on 3ω dynamic method coupled to a Völklein geometry. device obtained using micro-machining processes allows in-plane conductivity membrane with sensitivity less than 10 nW/K (+∕-5 × 10(-3) Wm(-1) K(-1) at room temperature) and very high resolution (ΔK/K = 10(-3)). transducer (heater/thermometer) centered used create an oscillation heat flux measure temperature third harmonic...
With the rise of two-dimensional (2D) transition-metal dichalcogenide (TMD) semiconductors and their prospective use in commercial (opto)electronic applications, it has become key to develop scalable reliable TMD synthesis methods with well-monitored controlled levels impurities. While metal–organic chemical vapor deposition (MOCVD) emerged as method choice for large-scale fabrication, carbon (C) incorporation arising during MOCVD growth TMDs been a persistent concern—especially instances...
Objective. We quantitatively investigate the biocompatibility of chemical vapour deposited (CVD) nanocrystalline diamond (NCD) after inclusion boron, with and without nanostructuring. The nanostructuring method involves a novel approach growing NCD over carbon nanotubes (CNTs) that act as 3D scaffold. This BNCD leads to material increased capacitance, this along wide electrochemical window makes an ideal for neural interface applications, thus it is essential their investigated. Approach....
This paper explores the propagation and interaction mechanisms demonstrated by compressible vortex rings. With spark shadowgraph schlieren photography, we examine vortical flow regimes produced impulse of a shock wave emerging from open end tube. For shock-wave Mach numbers ranging Ms = 1.0 to 2.0, three distinct were identified. From 1.43, conventional-looking rings are produced. These characterized very thin cores thus high circumferential instability wavenumbers. 1.43 1.60, axial velocity...
We investigate a possible new technique for microwave detection of cosmic-ray extensive air showers which relies on expected continuum radiation in the range, caused by free-electron collisions with neutrals tenuous plasma left after passage shower. performed an initial experiment at Argonne Wakefield Accelerator laboratory 2003 and measured broadband emission from ionized via high-energy electrons photons. A follow-up Stanford Linear Center summer 2004 confirmed major features previous...