Seminars in Materials Science and Engineering

The department hosts lectures by renowned researchers, authors, and professionals each year.

Current Seminar

Nano Insights into 2D Metal Halide Perovskites Stressed by Mechanical and Electrical Fields

Qing Tu, Ph.D.
Assistant Professor Department of Materials Science and Engineering
Texas A&M University

Friday, November 14, 2025, 12:00 - 1:00p.m. NH203

Abstract:2D metal halide perovskites (MHPs) are an emerging family of low-cost, high-performance semiconductor materials for numerous energy and electronics applications. Stability of 2D MHPs under mechanical and electrical stresses are crucial for the reliability and durability of the devices. The hybrid organic-inorganic bonds enable unique mechanical and electrical behavior of 2D MHPs. The tremendous chemical space on the one hand allows us to tailor the materials to meet application needs but also impose challenges in materials design. In this talk, I will share some critical insights we have developed over the past few years into the behavior of 2D MHPs under mechanical and electrical stresses, utilizing scanning probe microscopy techniques. We will discuss the elastic, thermo-mechanical, fatigue and dielectric breakdown properties of these materials and the impact of the constituent chemistry on these properties. The underlying mechanisms of this behavior will be discussed to guide future device design.

Biography: Dr. Qing Tu is an assistant professor in the Department of Materials Science & Engineering at Texas A&M University. He received his B.S. in Theoretical & Applied Mechanics from Peking University in 2011 and PhD in Mechanical Engineering & Materials Science with Outstanding Dissertation Award from Duke University in 2017. During his PhD, he also obtained a certificate (minor) in Nanoscience and M.A. in Economics. He then did a postdoc in the Department of Materials Science & Engineering at Northwestern University before launching his own group in Texas. He is interested in understanding and engineering the surfaces and interfaces in advanced functional materials (e.g., 2D materials, hybrid organic-inorganic perovskites) from a mechanics perspective to design and optimize their functional properties for applications. His group specializes in advanced scanning probe microscopy techniques. He has published over 40 papers, which have been cited over 4000 times. He won the ACS Petroleum Research Fund Doctoral New Investigator award and the Robert M. and Mary Haythornthwaite Young Investigator Award from the American Society of Mechanical Engineers in 2021.

Fall 2025 MSE Seminars

  • 9/12 - Metasurfaces and Nanomaterials for Thermal Radiative Regulation - Dr. Richard Z. Zhang, Department of Mechanical Engineering University of North Texas
  • 10/31 - Beyond the Degree: How Adaptability Shapes Your Career Journey - Dr. Allison Theresa Osmanson, Reliability Engineer, Microsoft
  • 11/14 - Nano Insights into 2D Metal Halide Perovskites Stressed by Mechanical and Electrical Fields Dr. Qing Tu Assistant Professor Department of Materials Science and Engineering Texas A&M University
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