scholarly journals Ordered Silver and Copper Nanorod Arrays for Enhanced Raman Scattering Created via Guided Oblique Angle Deposition on Polymer

2014 ◽  
Vol 118 (9) ◽  
pp. 4878-4884 ◽  
Author(s):  
M. Keating ◽  
S. Song ◽  
G. Wei ◽  
D. Graham ◽  
Y. Chen ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Oblique Angle Deposition ◽  
Nanorod Arrays ◽  
Oblique Angle ◽  
Enhanced Raman Scattering ◽  
Angle Deposition

scholarly journals Fabrication of Au Nanorods by the Oblique Angle Deposition Process for Trace Detection of Methamphetamine with Surface-Enhanced Raman Scattering

Sensors ◽  
2019 ◽  
Vol 19 (17) ◽  
pp. 3742
Author(s):  
Baini Li ◽  
Tianran Wang ◽  
Qingqing Su ◽  
Xuezhong Wu ◽  
Peitao Dong
Keyword(s):  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Oblique Angle Deposition ◽  
Trace Detection ◽  
Oblique Angle ◽  
Au Nanorods ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Angle Deposition

Oblique angle deposition (OAD) is a simple, low cost, effective, and maskless nanofabrication process. It can offer a reliable method for the mass fabrication of uniform metal nanorods which can be used as the surface-enhanced Raman scattering (SERS) substrate with an excellent enhancing performance. Up to now, Ag nanorods SERS substrates have been extensively studied. However, Ag is chemically active and easy to oxidize under atmospheric conditions. Comparatively, Au is chemically stable and has better biocompatibility than Ag. In this paper, we in detail, studied the electromechanical (EM) field distribution simulation, fabrication, and application of Au nanorods (AuNRs) on trace detection of methamphetamine. According to the finite-difference time-domain (FDTD) calculation results, the maximum EM intensity can be obtained with the length of AuNRs to be 800 nm and the tilting angle of AuNRs to be 71° respectively. The aligned Au nanorod array substrate was fabricated by the OAD process. The two key process parameters, deposition angle, and deposition rate were optimized by experiments, which were 86° and 2 Å/s, respectively. Using 1,2-bis (4-pyridyl) ethylene (BPE) as the probe molecule, the limit of detection (LOD) was characterized to be 10−11 M. The AuNRs were also used to detect methamphetamine. The LOD can be down to M (i.e., 14.92 pg/ml), which meet the requirements of the on-site rapid detection of the methamphetamine in human urine (500 ng/ml).

scholarly journals Slanted n-ZnO/p-GaN nanorod arrays light-emitting diodes grown by oblique-angle deposition

APL Materials ◽  
2014 ◽  
Vol 2 (5) ◽  
pp. 056101 ◽  
Author(s):  
Ya-Ju Lee ◽  
Zu-Po Yang ◽  
Fang-Yuh Lo ◽  
Jhih-Jhong Siao ◽  
Zhong-Han Xie ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Oblique Angle Deposition ◽  
Nanorod Arrays ◽  
Oblique Angle ◽  
Light Emitting ◽  
Angle Deposition

scholarly journals Vapor Phase Sensing Using Metal Nanorod Thin Films Grown by Cryogenic Oblique Angle Deposition

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Piyush Shah ◽  
Dongquan Ju ◽  
Xiaoxu Niu ◽  
Andrew M. Sarangan
Keyword(s):  
Thin Films ◽  
Vapor Phase ◽  
Oblique Angle Deposition ◽  
Oblique Angle ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Comsol Simulation ◽  
Angle Deposition ◽  
Good Agreement

We demonstrate the chemical sensing capability of silver nanostructured films grown by cryogenic oblique angle deposition (OAD). For comparison, the films are grown side by side at cryogenic (~100 K) and at room temperature (~300 K) by e-beam evaporation. Based on the observed structural differences, it was hypothesized that the cryogenic OAD silver films should show an increased surface enhanced Raman scattering (SERS) sensitivity. COMSOL simulation results are presented to validate this hypothesis. Experimental SERS results of 4-aminobenzenethiol (4-ABT) Raman test probe molecules in vapor phase show good agreement with the simulation and indicate promising SERS applications for these nanostructured thin films.

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