Plasmonic tuning of silver nanowires by laser shock induced lateral compression

Prashant Kumar, Ji Li, Qiong Nian, Yaowu Hu, Gary J. Cheng

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Laser shock induced lateral compression has been demonstrated to controllably flatten cylindrical silver nanowires. Nanowires with circular cross-sections of diameter 70 nm are significantly shaped laterally, which transformed them to metallic ribbons of huge width of 290 nm and of thickness down to 13 nm, amounting the aspect ratio to as high as 22, at a laser intensity of 0.30 GW cm-2. Above the laser intensity of 0.30 GW cm -2 though, nanowires are observed to be ruptured. Lateral deformations of nanowires are achieved without altering longitudinal dimensions. Selected area electron diffraction patterns on the laterally deformed nanowires reveal that the flattening gives rise to twinning under high strain rate deformation without actually degrading crystallinity. As the 1D nanowire turns into a 2D metallic nanoribbon, new plasmonic modes and their combinations emerge. The transverse plasmon mode does not shift substantially, whereas longitudinal modes and their combinations are greatly influenced by lateral deformation. Apart from the transverse mode, which is dominant in a 1D nanowire and diminishes heavily when lateral deformation occurs, there is a presence of several longitudinal plasmonic modes and their combinations for metallic nanoribbons, which are revealed by experimental extinction spectra and also supported by finite-difference time-domain (FDTD) simulation. Such plasmonic tuning of silver nanowires across the visible range demonstrates the capability of a laser shock induced lateral compression technique for various emerging plasmonic applications. The laser shock compression technique has the advantages of flexibility, selectivity and tunability while retaining crystallinity of metallic nanowires, all of which enable it to be a potential candidate for plasmonic tuning of nanogeometries.

Original languageEnglish (US)
Pages (from-to)6311-6317
Number of pages7
JournalNanoscale
Volume5
Issue number14
DOIs
StatePublished - Jul 21 2013
Externally publishedYes

Fingerprint

Silver
Nanowires
Tuning
Lasers
Nanoribbons
Carbon Nanotubes
Twinning
Electron diffraction
Diffraction patterns
Aspect ratio
Strain rate

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Plasmonic tuning of silver nanowires by laser shock induced lateral compression. / Kumar, Prashant; Li, Ji; Nian, Qiong; Hu, Yaowu; Cheng, Gary J.

In: Nanoscale, Vol. 5, No. 14, 21.07.2013, p. 6311-6317.

Research output: Contribution to journalArticle

Kumar, Prashant ; Li, Ji ; Nian, Qiong ; Hu, Yaowu ; Cheng, Gary J. / Plasmonic tuning of silver nanowires by laser shock induced lateral compression. In: Nanoscale. 2013 ; Vol. 5, No. 14. pp. 6311-6317.
@article{2beb3c12c46c4b33be8495a4e61b924f,
title = "Plasmonic tuning of silver nanowires by laser shock induced lateral compression",
abstract = "Laser shock induced lateral compression has been demonstrated to controllably flatten cylindrical silver nanowires. Nanowires with circular cross-sections of diameter 70 nm are significantly shaped laterally, which transformed them to metallic ribbons of huge width of 290 nm and of thickness down to 13 nm, amounting the aspect ratio to as high as 22, at a laser intensity of 0.30 GW cm-2. Above the laser intensity of 0.30 GW cm -2 though, nanowires are observed to be ruptured. Lateral deformations of nanowires are achieved without altering longitudinal dimensions. Selected area electron diffraction patterns on the laterally deformed nanowires reveal that the flattening gives rise to twinning under high strain rate deformation without actually degrading crystallinity. As the 1D nanowire turns into a 2D metallic nanoribbon, new plasmonic modes and their combinations emerge. The transverse plasmon mode does not shift substantially, whereas longitudinal modes and their combinations are greatly influenced by lateral deformation. Apart from the transverse mode, which is dominant in a 1D nanowire and diminishes heavily when lateral deformation occurs, there is a presence of several longitudinal plasmonic modes and their combinations for metallic nanoribbons, which are revealed by experimental extinction spectra and also supported by finite-difference time-domain (FDTD) simulation. Such plasmonic tuning of silver nanowires across the visible range demonstrates the capability of a laser shock induced lateral compression technique for various emerging plasmonic applications. The laser shock compression technique has the advantages of flexibility, selectivity and tunability while retaining crystallinity of metallic nanowires, all of which enable it to be a potential candidate for plasmonic tuning of nanogeometries.",
author = "Prashant Kumar and Ji Li and Qiong Nian and Yaowu Hu and Cheng, {Gary J.}",
year = "2013",
month = "7",
day = "21",
doi = "10.1039/c3nr02104a",
language = "English (US)",
volume = "5",
pages = "6311--6317",
journal = "Nanoscale",
issn = "2040-3364",
publisher = "Royal Society of Chemistry",
number = "14",

}

TY - JOUR

T1 - Plasmonic tuning of silver nanowires by laser shock induced lateral compression

AU - Kumar, Prashant

AU - Li, Ji

AU - Nian, Qiong

AU - Hu, Yaowu

AU - Cheng, Gary J.

PY - 2013/7/21

Y1 - 2013/7/21

N2 - Laser shock induced lateral compression has been demonstrated to controllably flatten cylindrical silver nanowires. Nanowires with circular cross-sections of diameter 70 nm are significantly shaped laterally, which transformed them to metallic ribbons of huge width of 290 nm and of thickness down to 13 nm, amounting the aspect ratio to as high as 22, at a laser intensity of 0.30 GW cm-2. Above the laser intensity of 0.30 GW cm -2 though, nanowires are observed to be ruptured. Lateral deformations of nanowires are achieved without altering longitudinal dimensions. Selected area electron diffraction patterns on the laterally deformed nanowires reveal that the flattening gives rise to twinning under high strain rate deformation without actually degrading crystallinity. As the 1D nanowire turns into a 2D metallic nanoribbon, new plasmonic modes and their combinations emerge. The transverse plasmon mode does not shift substantially, whereas longitudinal modes and their combinations are greatly influenced by lateral deformation. Apart from the transverse mode, which is dominant in a 1D nanowire and diminishes heavily when lateral deformation occurs, there is a presence of several longitudinal plasmonic modes and their combinations for metallic nanoribbons, which are revealed by experimental extinction spectra and also supported by finite-difference time-domain (FDTD) simulation. Such plasmonic tuning of silver nanowires across the visible range demonstrates the capability of a laser shock induced lateral compression technique for various emerging plasmonic applications. The laser shock compression technique has the advantages of flexibility, selectivity and tunability while retaining crystallinity of metallic nanowires, all of which enable it to be a potential candidate for plasmonic tuning of nanogeometries.

AB - Laser shock induced lateral compression has been demonstrated to controllably flatten cylindrical silver nanowires. Nanowires with circular cross-sections of diameter 70 nm are significantly shaped laterally, which transformed them to metallic ribbons of huge width of 290 nm and of thickness down to 13 nm, amounting the aspect ratio to as high as 22, at a laser intensity of 0.30 GW cm-2. Above the laser intensity of 0.30 GW cm -2 though, nanowires are observed to be ruptured. Lateral deformations of nanowires are achieved without altering longitudinal dimensions. Selected area electron diffraction patterns on the laterally deformed nanowires reveal that the flattening gives rise to twinning under high strain rate deformation without actually degrading crystallinity. As the 1D nanowire turns into a 2D metallic nanoribbon, new plasmonic modes and their combinations emerge. The transverse plasmon mode does not shift substantially, whereas longitudinal modes and their combinations are greatly influenced by lateral deformation. Apart from the transverse mode, which is dominant in a 1D nanowire and diminishes heavily when lateral deformation occurs, there is a presence of several longitudinal plasmonic modes and their combinations for metallic nanoribbons, which are revealed by experimental extinction spectra and also supported by finite-difference time-domain (FDTD) simulation. Such plasmonic tuning of silver nanowires across the visible range demonstrates the capability of a laser shock induced lateral compression technique for various emerging plasmonic applications. The laser shock compression technique has the advantages of flexibility, selectivity and tunability while retaining crystallinity of metallic nanowires, all of which enable it to be a potential candidate for plasmonic tuning of nanogeometries.

UR - http://www.scopus.com/inward/record.url?scp=84879860274&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84879860274&partnerID=8YFLogxK

U2 - 10.1039/c3nr02104a

DO - 10.1039/c3nr02104a

M3 - Article

C2 - 23749208

AN - SCOPUS:84879860274

VL - 5

SP - 6311

EP - 6317

JO - Nanoscale

JF - Nanoscale

SN - 2040-3364

IS - 14

ER -