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.









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