Synergistic Approaches for Precision in Material Engineering: Defects, Synthesis, and Applications

#Defects#MaterialEngineering

In the pursuit of enhanced material functionality, precise atomic and electronic interfaces have already proven pivotal across catalysis, separations, and electronics. Single-atom dopants elevate catalytic activity, while line defects transform semiconductor electronics. Despite inherent material restrictions, understanding and controlling defects offer pathways to materials with superior performance. In this talk, I will present two studies that exemplify this approach:

·  I investigated a porous MFI-zeolite membrane using advanced characterization techniques. Employing transmission electron microscopy (TEM) and a pattern detection algorithm, I uncovered single-unit-cell MEL defect patterns at the Å-scale. At the nm-scale, I studied pore deformations caused by xylene molecule diffusion and discovered that introducing rigid MEL defects enhanced membrane selectivity for xylene isomer separation by up to 5 times under industrial conditions.

·  I created photonically active metasurfaces for LIDAR devices involving the synthesis of chiral microparticles that resemble bowtie shapes and tuning their morphology across nm to µm scales. Understanding self-assembly origins via microscopy, spectroscopy, and growth models allowed me to scale-up to gram-scale powders for practical information storage coatings.

The investigations presented demonstrate the collaborative application of colloidal synthesis, transmission electron microscopy, chiroptical spectroscopy, and continuum modeling to design materials with engineered defects. Additionally, I will outline my prospective research endeavors, which aim to engineer porosity and chirality in next-generation material platforms for sustainable manufacturing, optoelectronics, and healthcare drawing upon the methodologies previously elucidated.

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• Seminar Hall
• IIT Guwahati
• Guwahati, Assam
• India 781039
• Building: EEE Department

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• Co-sponsored by Guwahati Subsection-R0013705