Amorphization of Cu nanoparticles: Effects on surface plasmon resonance

H. Amekura; B. Johannessen; D. J. Sprouster; M. C. Ridgway

doi:10.1063/1.3615307

Amorphization of Cu nanoparticles: Effects on surface plasmon resonance

H. Amekura^*, B. Johannessen, D. J. Sprouster, M. C. Ridgway

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Crystalline copper nanoparticles (NPs) were formed in silica by multi-energy MeV ion implantations and then transformed to amorphous NPs by irradiation with 5 MeV Sn³⁺ ions. Optical absorption spectra of both the phases were evaluated in the ultra-violet to near-infrared regions. Compared with corresponding crystalline NPs of the same mean diameter, the amorphous NPs showed a low-energy shift of the surface plasmon resonance around 2.2 eV and less prominent absorption structure around 4 eV. These differences are explained by a strongly reduced electron mean-free-path in the amorphous NPs due to the loss of lattice periodicity.

Original language	English
Article number	043102
Journal	Applied Physics Letters
Volume	99
Issue number	4
DOIs	https://doi.org/10.1063/1.3615307
Publication status	Published - 25 Jul 2011

Access to Document

10.1063/1.3615307

Cite this

@article{e26b997f8a824df280840d36e9a675da,

title = "Amorphization of Cu nanoparticles: Effects on surface plasmon resonance",

abstract = "Crystalline copper nanoparticles (NPs) were formed in silica by multi-energy MeV ion implantations and then transformed to amorphous NPs by irradiation with 5 MeV Sn3+ ions. Optical absorption spectra of both the phases were evaluated in the ultra-violet to near-infrared regions. Compared with corresponding crystalline NPs of the same mean diameter, the amorphous NPs showed a low-energy shift of the surface plasmon resonance around 2.2 eV and less prominent absorption structure around 4 eV. These differences are explained by a strongly reduced electron mean-free-path in the amorphous NPs due to the loss of lattice periodicity.",

author = "H. Amekura and B. Johannessen and Sprouster, {D. J.} and Ridgway, {M. C.}",

year = "2011",

month = jul,

day = "25",

doi = "10.1063/1.3615307",

language = "English",

volume = "99",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "4",

}

TY - JOUR

T1 - Amorphization of Cu nanoparticles

T2 - Effects on surface plasmon resonance

AU - Amekura, H.

AU - Johannessen, B.

AU - Sprouster, D. J.

AU - Ridgway, M. C.

PY - 2011/7/25

Y1 - 2011/7/25

N2 - Crystalline copper nanoparticles (NPs) were formed in silica by multi-energy MeV ion implantations and then transformed to amorphous NPs by irradiation with 5 MeV Sn3+ ions. Optical absorption spectra of both the phases were evaluated in the ultra-violet to near-infrared regions. Compared with corresponding crystalline NPs of the same mean diameter, the amorphous NPs showed a low-energy shift of the surface plasmon resonance around 2.2 eV and less prominent absorption structure around 4 eV. These differences are explained by a strongly reduced electron mean-free-path in the amorphous NPs due to the loss of lattice periodicity.

AB - Crystalline copper nanoparticles (NPs) were formed in silica by multi-energy MeV ion implantations and then transformed to amorphous NPs by irradiation with 5 MeV Sn3+ ions. Optical absorption spectra of both the phases were evaluated in the ultra-violet to near-infrared regions. Compared with corresponding crystalline NPs of the same mean diameter, the amorphous NPs showed a low-energy shift of the surface plasmon resonance around 2.2 eV and less prominent absorption structure around 4 eV. These differences are explained by a strongly reduced electron mean-free-path in the amorphous NPs due to the loss of lattice periodicity.

UR - http://www.scopus.com/inward/record.url?scp=79961052304&partnerID=8YFLogxK

U2 - 10.1063/1.3615307

DO - 10.1063/1.3615307

M3 - Article

SN - 0003-6951

VL - 99

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 4

M1 - 043102

ER -

Amorphization of Cu nanoparticles: Effects on surface plasmon resonance

Abstract

Access to Document

Other files and links

Fingerprint

Cite this