Ordered Au Nanodisk and Nanohole Arrays: Fabrication and Applications

2010 ◽  
Vol 1 (3) ◽  
Author(s):  
Yue Bing Zheng ◽  
Bala Krishna Juluri ◽  
Brian Kiraly ◽  
Tony Jun Huang
Keyword(s):  
Surface Plasmon Resonance ◽  
High Throughput ◽  
Localized Surface Plasmon Resonance ◽  
Low Cost ◽  
Localized Surface Plasmon ◽  
Dependent Behavior ◽  
Nanohole Arrays ◽  
Time Observation ◽  
Nanofabrication Technique ◽  
Real Time Observation

We have utilized nanosphere lithography (NSL) to fabricate ordered Au nanodisk and nanohole arrays on substrates and have studied the localized surface plasmon resonance (LSPR) of the arrays. Through these investigations, we demonstrate that the angle-dependent behavior of the LSPR in the Au nanodisk arrays enables real-time observation of exciton-plasmon couplings. In addition, we show that the NSL-fabricated Au nanohole arrays can be applied as templates for patterning micro-/nanoparticles under capillary force. The unique structural and plasmonic characteristics of the Au nanodisk and nanohole arrays, as well as the low-cost and high-throughput NSL-based nanofabrication technique, render these arrays excellent platforms for numerous engineering applications.

Fabrication and Applications of Ordered Au Nanodisk and Nanohole Arrays

2010 ◽  
Author(s):  
Tieyu Gao ◽  
Yue Bing Zheng ◽  
Bala Krishna Juluri ◽  
Tony Jun Huang
Keyword(s):  
Localized Surface Plasmon Resonance ◽  
Low Cost ◽  
Nano Particles ◽  
Localized Surface Plasmon ◽  
Microfluidic Channels ◽  
Force Microscopy ◽  
Glass Substrates ◽  
Atomic Force ◽  
Nanohole Arrays ◽  
Nanofabrication Technique

We have fabricate ordered Au nanodisk and nanohole arrays on glass substrates using nanosphere lithography (NSL) combined with reactive ion etching (RIE) techniques. The morphology and size distribution of the Au nanodisks and nanoholes were examined with scanning electron microscopy (SEM) and atomic force microscopy (AFM). The sensitivity of the localized surface plasmon resonance (LSPR) of the Au nanodisk arrays to change in the surroundings’ refractive index was evaluated by integrating the Au nanodisk arrays into microfluidic channels. In addition, we show that the NSL-fabricated Au nanohole arrays can be applied as templates for patterning micro-/nano-particles under capillary force. The unique structural and optical characteristics of the Au nanodisk and nanohole arrays, as well as the low-cost and high-throughput of NSL-based nanofabrication technique, render these arrays excellent platforms for numerous engineering applications.

scholarly journals Fabrication of Interconnected Plasmonic Spherical Silver Nanoparticles with Enhanced Localized Surface Plasmon Resonance (LSPR) Peaks Using Quince Leaf Extract Solution

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1557 ◽  
Author(s):  
Shujahadeen B. Aziz ◽  
Govar Hussein ◽  
M. A. Brza ◽  
Sewara J. Mohammed ◽  
R. T. Abdulwahid ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Low Cost ◽  
Ftir Spectrum ◽  
Localized Surface Plasmon ◽  
Ag Nps ◽  
Extract Solution

Interconnected spherical metallic silver nanoparticles (Ag NPs) were synthesized in the current study using a green chemistry method. The reduction of silver ions to Ag NPs was carried out with low-cost and eco-friendly quince leaves. For the first time, it was confirmed that the extract solution of quince leaves could be used to perform green production of Ag NPs. Fourier transform infrared spectroscopy (FTIR) was conducted to identify the potential biomolecules that were involved in the Ag NPs. The results depicted that the biosynthesis of Ag NPs through the extract solution of quince leaf was a low-cost, clean, and safe method, which did not make use of any contaminated element and hence, had no undesirable effects. The majority of the peaks in the FTIR spectrum of quince leaf extracts also emerged in the FTIR spectrum of Ag NPs but they were found to be of less severe intensity. The silver ion reduction was elaborated in detail on the basis of the FTIR outcomes. In addition, through X-ray diffraction (XRD) analysis, the Ag NPs were also confirmed to be crystalline in type, owing to the appearance of distinct peaks related to the Ag NPs. The creation of Ag NPs was furthermore confirmed by using absorption spectrum, in which a localized surface plasmon resonance (LSPR) peak at 480 nm was observed. The LSPR peak achieved in the present work was found to be of great interest compared to those reported in literature. Field emission scanning electron microscopy (FESEM) images were used to provide the morphology and grain size of Ag NPs. It was shown from the FESEM images that the Ag NPs had interconnected spherical morphology.

scholarly journals Low-Cost Localized Surface Plasmon Resonance Biosensing Platform with a Response Enhancement for Protein Detection

Nanomaterials ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 1019 ◽  
Author(s):  
Yun Liu ◽  
Ning Zhang ◽  
Ping Li ◽  
Li Yu ◽  
Shimeng Chen ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Real Time ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Low Cost ◽  
Microfluidic Channel ◽  
Protein Detection ◽  
Localized Surface Plasmon

There are many potential applications for biosensors that can provide real-time analysis, such as environmental monitoring and disease prevention. In this study, we investigated a simple strategy for real-time protein detection, which had the advantages of affordability, fast response, portability, and ease of use. A robust quantification of protein interaction was achieved by combining capillary localized surface plasmon resonance (LSPR) sensors and complementary metal–oxide–semiconductor (CMOS) image sensors. Gold nanoparticles were modified on the inner wall of the capillary, which was used as a microfluidic channel and sensing surface. We functionalized one of the LSPR sensors using ligand bound to gold nanoparticle. Our proposed biosensing platform could be easily multiplexed to achieve high throughput screening of biomolecular interactions, and it has the potential for use in disposable sensors. Moreover, the sensing signal was enhanced by the extinction effect of gold nanoparticles. The experimental results showed that our device could achieve qualitative identification and quantitative measurement of transferrin and immunoglobulin G (IgG). As a field-portable and low-cost optical platform, the proposed LSPR biosensing device is broadly applicable to various protein binding tests via a similar self-assembly of organic ultrathin films.

A facile colorimetric aptasensor for low-cost chlorpyrifos detection utilizing gold nanoparticles aggregation induced by polyethyleneimine

The Analyst ◽  
2021 ◽  
Author(s):  
Jittrapun Soongsong ◽  
Jamras Lerdsri ◽  
Jaroon Jakmunee
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Low Cost ◽  
Localized Surface Plasmon ◽  
Colorimetric Aptasensor

A colorimetric aptasensor for chlorpyrifos detection utilizing localized surface plasmon resonance (LSPR) of gold nanoparticles (AuNPs) aggregation coupling with a specific aptamer and cationic polyethyleneimine (PEI) has been developed. The...

Strain‐Induced Modulation of Localized Surface Plasmon Resonance in Ultrathin Hexagonal Gold Nanoplates

2021 ◽  
pp. 2100653
Author(s):  
Gyeong‐Su Park ◽  
Kyung Suk Min ◽  
Hyuksang Kwon ◽  
Sangwoon Yoon ◽  
Sangwon Park ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Localized Surface Plasmon
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