Research Directions
We synthesize and grow new chalcogenide materials to understand how crystal structure controls optical, environmental, and magnetic properties. Experiments drive our discoveries, with machine learning helping us choose what to make next.
High-temperature synthesis: We use solid-state reactions, molten fluxes, and chemical vapor transport to discover new compounds and grow high-quality single crystals with tailored compositions and structures.
Solvothermal synthesis: Low-temperature reactions under controlled pressure provide access to metastable phases, low-dimensional structures, and organic–inorganic hybrid materials that may be difficult to obtain through conventional high-temperature routes.
Current Projects in the group
Infrared Nonlinear Optical Materials
We design noncentrosymmetric chalcogenides and mixed-anion materials with strong nonlinear optical responses, wide band gaps, and high laser-damage thresholds. Our goal is to develop new materials for infrared frequency conversion, lasers, sensing, and photonic technologies.
Materials for Water Remediation
We develop metal chalcogenides and organic–inorganic hybrid materials for the rapid and selective capture of toxic heavy metals from water. We investigate how crystal structure and chemical bonding govern ion selectivity, exchange mechanisms, and remediation performance.
Machine Learning for Materials Synthesis
We integrate machine learning with experimental synthesis to understand how composition and reaction conditions control phase formation. By learning from both successful and unsuccessful reactions, we aim to predict promising chemical spaces and guide the synthesis of new materials.
2D Quantum & Magnetic Materials
We investigate low-dimensional chalcogenides with tunable electronic and magnetic properties. Through chemical substitution, intercalation, and structural control, we explore 2D magnetism, correlated electronic behavior, and emerging quantum phenomena.
Selected Publications
Discovery of Noncentrosymmetric Sr3As2S7 and Sr3As2Se2.5S4.5 Featuring As3+/As5+ Coordination and Their Strong Nonlinear Optical Response Chemistry of Materials, 2026
Vidyanshu Mishra; Jinseong Kim; Jong-Hoon Lim; Manya Rishi; Joon Jang; and Abishek K. Iyer
Unconventional Mechanism in the Selective Removal of Lead and Cadmium from Acidic Media Using Nax+2ySn4−yS8·3H2O (NMS-7) Journal of American Chemical Society, 2026
Anastasia D. Pournara, Yukun Liu, Thomas S. Ie, Xiangyu Ma; Jinlei Cui, Abishek K. Iyer, Alann P. Au, II, Dimitrios A. Evangelou, Edward H. Sargent; Vinayak P. Dravid, and Mercouri G. Kanatzidis
Stabilization of the Polar Structure and Giant Second-Order Nonlinear Response of Single Crystal γ-NaAs0.95Sb0.05Se2 Advanced Functional Materials, 2022
Abishek Iyer; Jingyang He; Hongyao Xie; Devin Goodling; Duck-Young Chung; Venkatraman Gopalan; Mercouri G. Kanatzidis