title: Transferable Memristive Nanoribbons Comprising Solution-Processed Strontium Titanate Nanocubes.
abstract: Memristors, often comprising an insulating metal oxide film between two metal electrodes (MIM), constitute a class of two-terminal devices that possesses tunable variations in resistance based on the applied bias history. Intense research remains focused on the metal-insulator interface, which serves as the crux of coupled electronic-ionic interactions and dictates the underpinning transport mechanisms at either electrode. Top-down, ultrahigh-vacuum (UVH) deposition approaches for MIM nanostructures yield highly crystalline, heteroepitaxial interfaces but limit the number of electrode configurations due to a fixed bottom electrode. Here we report on the convective self-assembly, removal, and transfer of individual nanoribbons comprising solution-processed, single-crystalline strontium titanate (STO) perovskite oxide nanocrystals to arbitrary metallized substrates. Nanoribbon transferability enables changes in transport models ranging from interfacial trap-detrap to electrochemical metallization processes. We also demonstrate the endurance of memristive behavior, including switching ratios up to 104, after nanoribbon redeposition onto poly(ethylene terephthalate) (PET) flexible substrates. The combination of ambient, aerobic prepared nanocrystals and convective self-assembly deposition herein provides a pathway for facile, scalable manufacturing of high quality, functional oxide nanostructures on arbitrary surfaces and topologies.
authors.affiliation: Department of Mechanical and Industrial Engineering, ‡Polymer Science and Engineering Department, and §Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States.
authors.forename: Jiaying
authors.initials: J
authors.lastname: Wang
authors.affiliation: Department of Mechanical and Industrial Engineering, ‡Polymer Science and Engineering Department, and §Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States.
authors.forename: Satyan
authors.initials: S
authors.lastname: Choudhary
authors.affiliation: Department of Mechanical and Industrial Engineering, ‡Polymer Science and Engineering Department, and §Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States.
authors.forename: William L
authors.initials: WL
authors.lastname: Harrigan
authors.affiliation: Department of Mechanical and Industrial Engineering, ‡Polymer Science and Engineering Department, and §Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States.
authors.forename: Alfred J
authors.initials: AJ
authors.lastname: Crosby
authors.affiliation: Department of Mechanical and Industrial Engineering, ‡Polymer Science and Engineering Department, and §Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States.
authors.forename: Kevin R
authors.initials: KR
authors.lastname: Kittilstved
authors.affiliation: Department of Mechanical and Industrial Engineering, ‡Polymer Science and Engineering Department, and §Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States.
authors.forename: Stephen S
authors.identifier: http://orcid.org/0000-0002-5369-9279
authors.initials: SS
authors.lastname: Nonnenmann
keywords: electronic transport; interfaces; nanoparticles; resistive switching; strontium titanate