Organizers:
- Qing Tu, Texas A&M University
- Wei Gao, Texas A&M University
- Nicholas Rolston, Arizona State University
Description:
Purpose and Scope: Hybrid organic-inorganic materials (HOIMs), e.g., metal halide perovskites and metal-organic frameworks, uniquely combine the features of molecular organic and inorganic components and significantly expand the material design space to provide low-cost, high-performance materials. Because of the hybrid bonds, HOIMs also exhibit unique mechanical behaviors different from conventional pure organic and pure inorganic materials, where new experimental and computational approaches should be developed and combined to understand the unusual mechanical behaviors of HOIMs. Mechanical strain is universally encountered by these materials during device fabrication and device operation which can be used to modulate a range of properties related to performance and reliability. Understanding, mitigating and even harnessing the strain-induced functional property change of HOIMs will therefore be crucial for device design, engineering and commercialization. The tremendous design space enabled by the abundant chemistry and structure options available to HOIMs, and the numerous defects and associated dynamics generated by the scalable facile processing techniques impose great challenges to engineer these materials in a controlled manner and opportunities to precisely tailor their mechanical and strain-coupled properties for application needs. In addition, the design space opens up enormous opportunities for high-throughput experimental/computational studies and AI/machine-learning explorations.
The symposium will focus on understanding the unique mechanical behaviors of HOIMs and their fundamental relationship to the structure, processing and external stimuli, and unravelling the role of mechanical strain in the functional performance of the materials and devices. The symposium will cover fundamental mechanics theory and modeling of HOIMs, including modeling and predicting/controlling mechanical behavior and the influence of mechanical deformation on the functional properties in HOIMs. Further topics will include developing novel computational methodologies and designing materials, devices/structures to control or harness the strain effect. The symposium will also cover mechanical, structural and functional characterization to elucidate structure-property relationships of HOIMs in their service environment. In addition, the symposium will discuss advancements in processing and synthetic strategies to deterministically engineer/tailor their mechanical and strain-coupled properties.
Interdisciplinary topics related to mechanics, physics and materials science & engineering will be presented by invited speakers in order to promote the development of these new forms of materials and applications. Interdisciplinary presentations from invited speakers are also aimed to motivate synergistic research collaborations in the field of mechanical behavior and strain engineering of HOIMs.
Invited Speakers (tentative) include:
- Nitin Padture (Brown University)
- Reinhold Dauskardt (Stanford University)
- Winston Wole Soboyejo (SUNY Polytechnic Institute)
- Michael McGehee (University of Colorado Boulder)
- Omar K. Farha (Northwestern University)
- Adam Printz (University of Arizona)
- Jin-Chong Tan (Oxford University)
- Yang Lu (University of Hong Kong)
- Jinsong Huang (UNC – Chapel Hill)
- Yueting Sun (University of Birmingham)
- Dan Zhao (National University of Singapore)
- Hong-Cai (Joe) Zhou (Texas A&M University)
- Jun Liu (North Carolina State University)
- Hemamala Karunadasa (Stanford University)
- Xiwen Gong (University of Michigan)
- Shao-Horn Yang (Massachusetts Institute of Technology)
- Nicola Perry (University of Illinois Urbana Champaign)
- Loreta Muscarella (Vrije Universiteit Amsterdam)
- Piero Canepa (University of Illinois Urbana Champaign)
- Arun Mannodi-Kanakkithodi (Purdue University)
Topics of interest:
Topics addressed in this symposium will include (but not limited to):
- Mechanical Behavior: elasticity, plasticity, fracture, fatigue, creep, and deformation mechanism of HOIMs; New structure/chemistry and engineering strategies to enhance the mechanical reliability of HOIMs; Mechanical behavior of HOIMs in service environments, with external stressors, e.g., temperature, light, and humidity.
- Surface and interfacial mechanics in HOIMs, including tribology, adhesion, fracture, and encapsulation, etc.
- Novel engineering strategies to achieve controllable mechanical deformation (e.g., bending, wrinkling, folding, buckling, crumpling, assembly, etc.), strain distribution, and/or mechanically coupled functionalities (e.g., symmetry breaking, piezoelectricity, chemical reactivity, light emission, conductivity, work function, etc.)
- Experimental characterization and theoretical understanding of the stress/strain distribution in HOIMs in device applications, and the stress/strain transfer through the surfaces and interfaces in HOIMs and heterostructures under both static and dynamic loading conditions
- Mechanically-coupled physico-chemical properties and transport phenomena in HOIMs, including thermal, electrical, optical, magnetic properties
- Flexible, stretchable and shape adaptive devices based on HOIMs
- Computational methods and simulation for HOIMs: current advances in computational tools (machine learning, artificial intelligence, DFT, molecular dynamics, etc.) and modeling for HOIMs’ mechanical behavior and strain-coupled properties.
- Advanced characterization techniques for HOIMs: advances in structure-property characterization techniques (incl. in-situ/in-operando methods) for HOIMs