Examining Substrate-Induced Plasmon Mode Splitting and Localization in Truncated Silver Nanospheres with Electron Energy Loss Spectroscopy

Journal Article · Thu Jan 01 00:00:00 EST 2015 · Journal of Physical Chemistry Letters

DOI:https://doi.org/10.1021/acs.jpclett.5b00961· OSTI ID:1265622

Li, Guoliang ^[1]; Cherqui, Charles ^[2]; Wu, Yueying ^[3]; Bigelow, Nicholas W. ^[2]; Simmons, Philip D. ^[4]; Rack, Philip D. ^[5]; Masiello, David J. ^[2]; Camden, Jon P. ^[1]

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1. Univ. of Notre Dame, IN (United States). Dept. of Chemistry and Biochemistry
2. Univ. of Washington, Seattle, WA (United States). Dept. of Chemistry
3. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
4. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry
5. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences

In this paper, motivated by the need to study the size dependence of nanoparticle–substrate systems, we present a combined experimental and theoretical electron energy loss spectroscopy (EELS) study of the plasmonic spectrum of substrate-supported truncated silver nanospheres. This work spans the entire classical range of plasmonic behavior probing particles of 20–1000 nm in diameter, allowing us to map the evolution of localized surface plasmons into surface plasmon polaritons and study the size dependence of substrate-induced mode splitting. Finally, this work constitutes the first nanoscopic characterization and imaging of these effects in truncated nanospheres, setting the stage for the systematic study of plasmon-mediated energy transfer in nanoparticle–substrate systems.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1265622
• Journal Information: Journal of Physical Chemistry Letters, Vol. 6, Issue 13; ISSN 1948-7185
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY