Direct Imaging of Soft-Hard Interfaces Enabled by Graphene
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- Direct Imaging of Soft-Hard Interfaces Enabled by Graphene
- Lee, Zonghoon; Jeon, Ki-Joon; Dato, Albert; Erni, Rolf; Richardson, Thomas J.; Frenklach, Michael; Radmilovic, Velimir
- Atomic layer; Atomic-resolution; Atomic-resolution imaging; Capping layer; Carbon atoms; Direct imaging; Functionalized nanoparticles; Gold Nanoparticles; Graphenes; Hard material; Microscopy technique; Molecular layer; Soft nanomaterials; Soft-hard interface; Surface molecules; Ultra-thin
- Issue Date
- AMER CHEMICAL SOC
- NANO LETTERS, v.9, no.9, pp.3365 - 3369
- Direct imaging of surface molecules and the interfaces between soft and hard materials on functionalized nanoparticles is a great challenge using modern microscopy techniques. We show that graphene, a single atomic layer of sp 2-bonded carbon atoms, can be employed as an ultrathin support film that enables direct imaging of molecular layers and interfaces in both conventional and atomic-resolution transmission electron microscopy. An atomic-resolution imaging study of the capping layers and interfaces of citrate-stabilized gold nanoparticles is used to demonstrate this novel capability. Our findings reveal the unique potential of graphene as an ideal support film for atomic-resolution transmission electron microscopy of hard and soft nanomaterials.
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