Advanced Materials & Micro-Nano-Devices

The lab develops research activities in the area of materials and nanomaterials growth, the fabrication of micrometr and nanometer scale devices, the characterization of the optical, electrical, thermal and morphological properties of the materials and devices as well as their computational design and modeling. The equipment infrastructure of the lab is of the order of 2000 kEuros.

Emerging memories

We investigate the physics and technology of resistive memories (ReRAM) based on metal oxides formed either from continuous thin films or nanoparticle assemblies. The material and device fabrication is performed in a high vacuum system in the Clean Room Laboratory of the Dept. of Physics of NTUA. We perform electrical characterization of the device as well as material characterization.

We collaborate with Asis. Prof. Leonidas Tsetseris for DFT calculations and the Department of Microelectronics/NCSR Demokritos for device scaling (Dr. P. Normand group) and Electron Microscopy (Dr. A. Travlos group)

Nanoparticle based sensors

We investigate the physics related to the electron transport in metallic nanoparticle assemblies and their use as sensors for physical or bio-chemical parameters. Material and device fabrication is performed in the Clean Room Laboratory of the Dept. of Physics of NTUA.

We collaborate with the Department of Microelectronics/NCSR Demokritos (Dr. S. Chatzandroulis group).

Thermal processing of Semiconductors

We investigate thermal processes including ultra fast thermal processing of semiconductors that can result in diffusionless dopant atom processing with high electrical activation. Main application is currently the investigation of damage annealing, dopant diffusion and activation following ion impantation in silicon and germanium.

For that purpose we collaborate with the Laser laboratory of the Dept. of Physics of NTUA and the Laser Thermal lab of the Univesrity of Berkeley (Prof. C. Grigoropoulos).

• AI Pantazi, V. Yannopapas ‘Enhanced light absorption in graphene via a liquid-crystalline optical diode’OPTICS COMMUNICATIONS Volume: 374 Pages: 24-28 (2016)
• Guo, J. Tang, K. Qian, D. Tsoukalas et al ‘Vectorial strain gauge method using single flexible orthogonal polydimethylsiloxane gratings’, Nature Sc. Reports 6 23606 (2016)
• Yannopapas, AG Vanakaras ‘Strong Magnetochiral Dichroism in Suspensions of Magnetoplasmonic Nanohelices’ ACS PHOTONICS 2, 1030-1038 (2015)
• Stathopoulos, L. Tsetseris, N. Pradhan, B. Colombeau, D. Tsoukalas ‘Millisecond non-melt laser annealing of phosphorus implanted germanium: Influence of nitrogen co-doping’, J. Applied Phys. 118, 135710 (2015)
• Yannopapas ‘Quantum corrections in the optical properties of three-dimensional plasmonic metamaterials with subnanometer gaps’ SOLID STATE COMMUNICATIONS 222, 18-22 (2015)
• Tang, H. Guo, M. Chen, D. Tsoukalas et al. ‘Wrinkled Ag nanostructured gratings towards single molecule detection by ultrahigh surface Raman scattering enhancement’, Sensors & Actuat. B-Chem 218, 145 (2015)
• Yannopapas, ‘Layer-multiple-scattering method for photonic structures of general scatterers based on a discrete-dipole approximation/T-matrix point-matching method JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS 31, 631-636 (2014)
• Stathopoulos, A. Florakis, G. Tzortzis, D. Tsoukalas ‘CO2 Laser Annealing for USJ Formation in Silicon: Comparison of Simulation and Experiment’ IEEE Trans. Electron Dev. 61, 696 (2014)
• Theodorakos, I. Zergioti, V. Vamvakas, et al., ‘Picosecond and nanosecond laser annealing and simulation of amorphous silicon thin films for solar cell applications’  J. Applied Phys. 115, 043108   (2014)
• Papazoglou, YS Raptis,S. Chatzandroulis, I. Zergioti, ‘ A study on the pulsed laser printing of liquid-phase exfoliated graphene for organic electronics’APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 117, 301 (2014)

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