Post-doctoral research: Ferroelectric properties in perovskite materials
Phase transition in ferroelectrics | (Sub) Atomic-scale imaging, chemical analysis in various TEM and STEM modes with EDS, EELS, DPC | In-situ TEM Electric field manipulation | In-situ heating in TEM | Oxygen vacancy in domain walls in perovskite ferroelectrics | Moblity of oxygen vacancy | Ferroelectric domain induced electromechanical motion and piezoelectricity.
Doctoral thesis: Cryomilled group IV elements (Silicon & Germanium) for opto-electronic applications
Synthesis of contamination-free nanoparticles of elemental semiconductors Si & Ge in bulk quantity becomes an important aspect. The indigenously developed cryomill setup has been used to synthesize p-type and n-type Si NPs. Doped Si NPs are employed in organic-inorganic hybrid solar cells to show improved efficiency. Polycrystalline nature milled NPs has been revealed and a one-step simple etching process has been proposed to obtain the nanocrystals, which showed PL in UV range with 17% yield. Size-selective functionalization has been employed to obtain Si ink. Similarly, Ge ink has been synthesized and successfully employed in inkjet printed diode fabrication. Si nanocrystals have also been utilized as a charge-trapping material in semiconducting device.
Other Projects
19 | 05 | 2011 – 29 | 06 | 2011: Characterization of CdS films prepared by chemical bath deposition method in an ammonia-free medium for solar cell application | Summer Internship Project carried out in the Dept. of Materials Science & Engg at National Tsing Hua University – Taiwan under the guidance of Prof. Lih-Hsin Chou.
15 | 05 | 2012 – 14 | 07 | 2012: Ultrasonic Dispersion of Carbon Nanotubes in various dispersion mediums | Summer Internship Project carried out in the Dept. of Metallurgical and Materials Engg at Indian Institute of Technology Madras under the guidance of Prof. Prathap Haridoss.
16 | 07 | 2012 – 30 | 09 | 2012: Grain refinement of Low Stacking Fault Energy material by Severe Plastic Deformation | CTDT, Anna University funded project for ‘Student Innovative Idea’ carried out in Central Workshop, Dept. of Mechanical Engg at College of Engineering Guindy- Anna University under the guidance of Asst. Prof. Thirumavalavan.
01 | 08 | 2012 – 30 | 11 | 2012: Parameter Optimization for the hydro – carbon based fuel cell performance using Design of Experiments | Bachelors Thesis Design Project carried out in Central Workshop, Dept. of Mechanical Engg at College of Engineering Guindy- Anna University under the guidance of Prof. Rajendra Boopathy and Asst. Prof. D Sangeetha.
01 | 01 | 2013 – 31 | 05 | 2013: Fabrication and Characterization of Chitosan/Ceramic Biodegradable Composite for Bone Graft | Bachelors Thesis Project carried out in Central Workshop, Dept. of Mechanical Engg at College of Engineering Guindy- Anna University under the guidance of Prof. Rajendra Boopathy and Asst. Prof. D Sangeetha.