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Research Interests

Optical properties of nanoparticles and nanostructures, work on gasochromic materials, gas sensors, photo detectors, solar cells, work on multiferoic materials, random lasers and disorder optical systems.

Research Plan

Our group is studying on different materials which potentially can be used to make some devices such as gas sensors, photo detectors, solar cells. The technique we are using to prepare the samples for the above purposes is mostly pulsed laser ablation or pulsed laser deposition using different wavelengths.

Recent Publications

• Ranjbar M., Fardindoost S., Mahdavi S. M., Iraji-zad A. & Tahmasebi N., "Palladium nanoparticle deposition onto the WO3 surface through hydrogen reduction of PdCl2: characterization and gasochromic properties", Solar Energy Materials and Solar cells 95, (2011) 2335–2340.
• S. Fardindoost, A. Iraji Zad, S. M. Mahdavi, "Hydrogen Sensor Based on Surface Activated WO3 Films by Pd Nanoclusters", World Academy of Science, Engineering and Technology 76, (2011) 639-642.
• Ghasempour Ardakani A., Bahrampour A. R., Mahdavi S. M., Golshani Gharyeh Ali M., "Numerical study of random laser in three dimensional amplifying disordered media", Journal of Optics Communications 44, (2012) 969-975.
• Ghasempour Ardakani A., Golshani Gharyeh Ali M., Mahdavi S. M., Bahrampour A. R., "Mode analysis of fiber Bragg grating random lasers in the presence of mode competition", Journal of Optics and Laser Technology 44, (2012) 969-975.
• Ghasempour Ardakani A., Hosseini M., Bahrampour A. R., Mahdavi S. M., "Temperature Tunable Random Laser Using Superconducting Materials", journal of Optics Communications 285, (2012) 1900-1903.
• Ghasempour Ardakani A., Pazoki M., Mahdavi S. M., Bahrampour A. R., Taghavinia N., "Ultraviolet photodetectors based on ZnO sheets: The effect of sheet size on properties photoresponse", Applied Surface Science 258(13), (2012) 5405-5411.
• Ranjbar M., Kalhori H, Mahdavi, S. M. and, Iraji zad A., "New gasochromic system: nanoparticles in liquid", Journal of Nanoparticles Reseach 13, (2012) 803.
• Ahadi K., Mahdavi S. M., Nemati A., Tabesh M. and Ranjbar M., "Electronic structure and morphologica study of BaTiO3 film grown by pulsed-laser deposition", Materials Letters 72, (2012) 107-109.
• Tahmasebi N., Mahdavi S. M., Irajizad A., "Pd²⁺ reduction and gasochromic properties of colloida tungsten oxide nanoparticles synthesized by pulsed laser ablation", Applied Physics A 108(2), pp 401-407 (2012).
• Ahadi K., Mahdavi S. M., Nemati A., "Effect of Chemical Substitution on the Morphology and Optical properties of Bi1-xCaxFeO3 Films Grown by Pulsed-Laser Deposition", Journal of Materials Science: Materials in Electronics, Journal of Materials Science: Materials in Electronics 24(1), (2013) pp 248-252.
• Tahmasebi Garavand N., Mahdavi S. M., Iraji zad A., Ranjbar M., "The effect of operating temperature on gasochromic properties of amorphous and polycrystalline pulsed laser deposited WO3 films", Sensors & Actuators: B. Chemical 169, (2012) 283-299.
• Tahmasebi Garavand N., Mahdavi S. M., Iraji zad A. and Ahadi K., "Synthesis of sodium tungsten oxide nano-thick plates", Materials Letters 82, (2012) pp 214-216.
• Tahmasebi Garavand N., Ranjbar M, Mahdavi S. M., Iraji zad A., "Coloration process of colloidal    tungsten oxide nanoparticles in the presence of hydrogen gas", Applied Surface Science 258, 2012, pp 10089-10094.
• Abbas Ghasempour Ardakani, Ali Reza Bahrampour, Seyed Mohammad Mahdavi, and Mehdi Hosseini, "Tunability of terahertz random lasers with temperature based on superconducting materials", J. Appl. Phys 112, (2012) 4311.
• Abbas Ghasempour Ardakani, Ali Reza Bahrampour, Seyed Mohammad Mahdavi, Mojtaba Golshani Gharyeh Ali, "Numerical study of random lasing in three dimensional amplifying disordered media", Optics Communications 285, (2012) 1314–1322.
• Abbas Ghasempour Ardakani, Seyed Mohammad Mahdavi , Ali Reza Bahrampour, "Tuning of random lasers by means of external magnetic fields based on theVoigt effect", Optics & Laser Technology 47, (2013) 121–126.
• Abbas Ghasempour Ardakani, Seyed Mohammad Mahdavi, and Ali Reza Bahrampour, "Time-dependent theory for random lasers in the presence of an inhomogeneous broadened gain medium such as PbSe quantum dots", Applied Optics 52(6), (2013) pp 1317-1324.
• M. Khazaei Nezhad, M. Golshani, A. R. Bahrampour, S. M. Mahdavi, "Effect of Kerr nonlinearity on the transverse localization of light in 1D array of optical waveguides with off-diagonal disorder", Optics Communications 294, (2013) 299–304.
• M. Khazaei Nezhad, S. M. Mahdavi, A. R. Bahrampour, M. Golshani, "Effect of long-range correlated disorder on the transverse localization of light in 1D array of optical waveguides", Optics Communications 307, (2013) 39–45.
• M. Khazaei Nezhad, A. R. Bahrampour, M. Golshani, S. M. Mahdavi, and A. Langari, "Phase ransition to spatial Bloch-like oscillation in squeezed photonic lattices", Physical Review A 88, 023801 (2013).