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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.









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