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MEAM Seminar: “Exploring Self-assembly of 2D Materials: Insights from Graphene Auto-kirigami”

August 14 at 10:15 AM - 11:15 AM

Two dimensional (2D) materials with atomic-scale thickness like graphene exhibit substantial in-plane stiffness and strength while maintaining significant out-of-plane flexibility. This enables the assembly of graphene into complex multilayer and even three-dimensional (3D) structures through a unique combination of self-folding, self-tearing, and nearly frictionless self-propagation, all driven by interfacial energy. We call this phenomenon ‘graphene auto-kirigami’.

Auto-kirigami provides an innovative approach to potentially sculpting 2D materials into intricate micro/nanostructures. However, significant challenges exist in understanding and controlling it. To address this, we have probed graphene auto-kirigami with atomic force microscopy (AFM) experiments, continuum mechanics models, and molecular dynamics (MD) simulations. We will present results toward our goal of developing a complete, atomistically-informed physical description of auto-kirigami formation in graphene-based systems.

Li Yuan

Ph.D. Candidate, Department of Mechanical Engineering & Applied Mechanics, University of Pennsylvania

Li Yuan is advised by Robert Carpick.

Details

Date:
August 14
Time:
10:15 AM - 11:15 AM
Event Categories:
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Organizer

Mechanical Engineering and Applied Mechanics
Phone
215-746-1818
Email
meam@seas.upenn.edu
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Venue

Towne 319
220 S. 33rd Street
Philadelphia, 19104 United States
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