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GREMAN is a research laboratory on materials, microelectronics, acoustics and nanotechnology of the University of Tours, CNRS and INSA Centre Val de Loire created January 1st 2012 by the merging of several groups located in Tours and Blois, France. Its expertise covers the value chain from materials science up to devices (components, sensors, transducers ...) and their integration. Fields such as electrical energy efficiency, power microelectronics and the use of ultrasonic waves are particularly targeted, for applications in industry, health and nomadic apparatus.

The activities of GREMAN are focused on five priority topics :

  • Functional oxides for energy efficiency: combinatory synthesis and nanostructuration.
  • Magnetic and optical properties of ferroic and electronic correlation materials.
  • Novel materials and components for power and RF microelectronics.
  • Piezoelectric and capacitive micronanosystems for ultrasonic transducers and energy conversion.
  • Ultrasonic methods and instrumentation for characterisation of complex media.









Elasticity 3C–SiC Barium titanate Energy harvesting Thermal conductivity Thin film growth Aluminium Piezoelectric Materials Piezoelectric materials Annealing Light diffraction Demand side management Numerical modeling Smart grid Sputtering Attractiveness of education Condensed matter properties Nanogenerator Adsorption Electron microscopy Active filters ZnO Thin films Electronic structure Strain Multiferroics Electrical resistivity Acoustics Ultrasound Reliability Modeling Chemical vapor deposition Disperse systems Doping X-ray diffraction Acoustic waves Electrodes Time-dependent density functional theory Nanowires Silicon Ferroelectricity Mechanical properties Resistive switching Dielectric properties Domain walls Epitaxy Piézoélectricité Imaging Micromachining AC switch Organic solar cell Crystal growth High pressure Layered compounds LPCVD Capacitors ZnO nanowires Atomistic molecular dynamics Boundary value problems Silicon devices CCTO Chemical synthesis Composites Etching Spark plasma sintering Raman spectroscopy Capacitance Thin film deposition Thermoelectrics Colossal permittivity Crystal structure Precipitation Ceramics Collaborative framework Transducers Crystallography Diffraction optics Phase transitions Piezoelectric properties Piezoelectricity Cost of electricity consumption Characterization Microwave frequency CMUT Electrical properties Atomic force microscopy Individual housing Zinc oxide Porous materials Porous silicon Raman scattering Hyperbolic law Carbides Mesoporous silicon Nanoparticles Ferroelectrics Composite Electrochemical etching Oxides