Journal
NANOSCALE
Volume 11, Issue 5, Pages 2153-2161Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nr07141a
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [11774245, 11674256, 11704266, 11422436, 11774413, 51571146, 51771124]
- Ministry of Science and Technology of China [2015CB932400]
- Fok Ying Tung Education Foundation [151010]
- Scientific Research Base Development Program of the Beijing Municipal Commission of Education
- Training Program of the Major Research Plan of Capital Normal University
- General Foundation of Beijing Municipal Commission of Education [KM201810028006]
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available