Cryo-transmission electron microscopy of Ag nanoparticles grown on an ionic liquid substrate

Handle URI:
http://hdl.handle.net/10754/561547
Title:
Cryo-transmission electron microscopy of Ag nanoparticles grown on an ionic liquid substrate
Authors:
Anjum, Dalaver H.; Stiger, Rebecca M.; Finley, James J.; Conway, James F.
Abstract:
We report a novel method of growing silver nanostructures by cathodic sputtering onto an ionic liquid (IL) and our visualization by transmission cryo-electron microscopy to avoid beam-induced motion of the nanoparticles. By freezing the IL suspension and controlling electron dose, we can assess properties of particle size, morphology, crystallinity, and aggregation in situ and at high detail. We observed round silver nanoparticles with a well-defined diameter of 7.0 ± 1.5 nm that are faceted with crystalline cubic structures and ∼80% of the particles have multiply twinned faults. We also applied cryo-electron tomography to investigate the structure of the nanoparticles and to directly visualize the IL wetting around them. In addition to particles, we observed nanorods that appear to have assembled from individual nanoparticles. Reexamination of the samples after 4-5 days from initial preparation showed significant changes in morphology, and potential mechanisms for this are discussed. © 2010 Materials Research Society.
KAUST Department:
Advanced Nanofabrication, Imaging and Characterization Core Lab; Core Labs
Publisher:
Cambridge University Press (CUP)
Journal:
Journal of Materials Research
Issue Date:
Jul-2010
DOI:
10.1557/jmr.2010.0166
Type:
Article
ISSN:
08842914
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab

Full metadata record

DC FieldValue Language
dc.contributor.authorAnjum, Dalaver H.en
dc.contributor.authorStiger, Rebecca M.en
dc.contributor.authorFinley, James J.en
dc.contributor.authorConway, James F.en
dc.date.accessioned2015-08-02T09:13:56Zen
dc.date.available2015-08-02T09:13:56Zen
dc.date.issued2010-07en
dc.identifier.issn08842914en
dc.identifier.doi10.1557/jmr.2010.0166en
dc.identifier.urihttp://hdl.handle.net/10754/561547en
dc.description.abstractWe report a novel method of growing silver nanostructures by cathodic sputtering onto an ionic liquid (IL) and our visualization by transmission cryo-electron microscopy to avoid beam-induced motion of the nanoparticles. By freezing the IL suspension and controlling electron dose, we can assess properties of particle size, morphology, crystallinity, and aggregation in situ and at high detail. We observed round silver nanoparticles with a well-defined diameter of 7.0 ± 1.5 nm that are faceted with crystalline cubic structures and ∼80% of the particles have multiply twinned faults. We also applied cryo-electron tomography to investigate the structure of the nanoparticles and to directly visualize the IL wetting around them. In addition to particles, we observed nanorods that appear to have assembled from individual nanoparticles. Reexamination of the samples after 4-5 days from initial preparation showed significant changes in morphology, and potential mechanisms for this are discussed. © 2010 Materials Research Society.en
dc.publisherCambridge University Press (CUP)en
dc.titleCryo-transmission electron microscopy of Ag nanoparticles grown on an ionic liquid substrateen
dc.typeArticleen
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.contributor.departmentCore Labsen
dc.identifier.journalJournal of Materials Researchen
dc.contributor.institutionDepartment of Structural Biology, University of Pittsburgh-School of Medicine, Pittsburgh, PA 15260, United Statesen
dc.contributor.institutionPPG Glass Business and Discovery Center, Cheswick, PA 15024, United Statesen
kaust.authorAnjum, Dalaver H.en
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