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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.









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