Skip to Main content Skip to Navigation




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.









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