Silver nano-needles : Focused optical field induced solution synthesis and application in remote-excitation nanofocusing SERS
(2019) In Nanoscale 11(5). p.2153-2161- Abstract
Tapered metallic nanostructures that harbor surface plasmons are highly interesting for nanophotonic applications because of their waveguiding and field-focusing properties. Here, we developed a focused optical field induced solution synthesis for unique crystallized silver nano-needles. Under the focused laser spot, inhomogeneous Ag monomer concentration is created, which triggers the uniaxial growth of silver nanostructures along the radial direction with decreasing rate, forming nano-needle structures. These nano-needles are several micrometers long, with diameter attenuating from hundreds to tens of nanometers, and terminated by a sharp apex only a few nanometers in diameter. Moreover, nano-needles with atomically smooth surfaces... (More)
Tapered metallic nanostructures that harbor surface plasmons are highly interesting for nanophotonic applications because of their waveguiding and field-focusing properties. Here, we developed a focused optical field induced solution synthesis for unique crystallized silver nano-needles. Under the focused laser spot, inhomogeneous Ag monomer concentration is created, which triggers the uniaxial growth of silver nanostructures along the radial direction with decreasing rate, forming nano-needle structures. These nano-needles are several micrometers long, with diameter attenuating from hundreds to tens of nanometers, and terminated by a sharp apex only a few nanometers in diameter. Moreover, nano-needles with atomically smooth surfaces show excellent performance for plasmonic waveguiding and unique near-field compression abilities. This nano-needle structure can be used for effective remote-excitation detection/sensing. We also demonstrate the assembling and picking up of nano-needles, which indicate potential applications in intracellular endoscopy, high resolution scanning tips, on-chip nanophotonic devices, etc.
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- author
- Li, Pan ; Pan, Deng ; Yang, Longkun ; Wei, Hong ; He, Shuli ; Xu, Hongxing LU and Li, Zhipeng
- organization
- publishing date
- 2019-02-07
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nanoscale
- volume
- 11
- issue
- 5
- pages
- 9 pages
- publisher
- Royal Society of Chemistry
- external identifiers
-
- scopus:85060954519
- pmid:30402639
- ISSN
- 2040-3364
- DOI
- 10.1039/c8nr07141a
- language
- English
- LU publication?
- yes
- id
- af8a3d57-ea1d-484c-a2c1-45fe40e03e29
- date added to LUP
- 2019-02-11 11:56:35
- date last changed
- 2024-06-11 04:47:08
@article{af8a3d57-ea1d-484c-a2c1-45fe40e03e29,
abstract = {{<p>Tapered metallic nanostructures that harbor surface plasmons are highly interesting for nanophotonic applications because of their waveguiding and field-focusing properties. Here, we developed a focused optical field induced solution synthesis for unique crystallized silver nano-needles. Under the focused laser spot, inhomogeneous Ag monomer concentration is created, which triggers the uniaxial growth of silver nanostructures along the radial direction with decreasing rate, forming nano-needle structures. These nano-needles are several micrometers long, with diameter attenuating from hundreds to tens of nanometers, and terminated by a sharp apex only a few nanometers in diameter. Moreover, nano-needles with atomically smooth surfaces show excellent performance for plasmonic waveguiding and unique near-field compression abilities. This nano-needle structure can be used for effective remote-excitation detection/sensing. We also demonstrate the assembling and picking up of nano-needles, which indicate potential applications in intracellular endoscopy, high resolution scanning tips, on-chip nanophotonic devices, etc.</p>}},
author = {{Li, Pan and Pan, Deng and Yang, Longkun and Wei, Hong and He, Shuli and Xu, Hongxing and Li, Zhipeng}},
issn = {{2040-3364}},
language = {{eng}},
month = {{02}},
number = {{5}},
pages = {{2153--2161}},
publisher = {{Royal Society of Chemistry}},
series = {{Nanoscale}},
title = {{Silver nano-needles : Focused optical field induced solution synthesis and application in remote-excitation nanofocusing SERS}},
url = {{http://dx.doi.org/10.1039/c8nr07141a}},
doi = {{10.1039/c8nr07141a}},
volume = {{11}},
year = {{2019}},
}