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.









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