Investigating optical properties of gold nanorod arrays

2019 ◽  
Author(s):  
Emma Marlow ◽  
Antony Murphy ◽  
Robert Pollard
Keyword(s):  
Optical Properties ◽  
Gold Nanorod ◽  
Nanorod Arrays

scholarly journals Plasmon Enhanced Second Harmonic Generation from ZnO Nanofilms on Vertical Au Nanorod Arrays

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2597
Author(s):  
Qiang Ma ◽  
Chengda Pan ◽  
Yingxian Xue ◽  
Zhiyun Fang ◽  
Shiyu Zhang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Gold Nanorods ◽  
Second Harmonic ◽  
Nanorod Array ◽  
Gold Nanorod ◽  
Nanorod Arrays ◽  
Plasmonic Enhancement ◽  
Vertically Aligned

Vertically aligned gold nanorod arrays have attracted much attention for their fascinating optical properties. Different from longitudinal surface plasmon wavelength (LSPW) and edge-to-edge spacing of gold nanorods, the role of gold nanorod diameter in plasmonic enhancement ability of vertical gold nanorod arrays has rarely been explored. In this work, we selected gold nanorods with similar LSPW but two different diameters (22 and 41 nm), the optical properties of which are dominated by absorption and scattering cross sections, respectively. The vertically aligned arrays of these gold nanorods formed by evaporation self-assembly are coupled with nonlinear ZnO nanocrystal films spin-coated on their surfaces. It was found that the gold nanorod array with a larger diameter can enhance the second harmonic generation (SHG) of ZnO nanofilm by a factor of 27.0, while it is about 7.3 for the smaller gold nanorod array. Theoretical simulations indicate that such stronger enhancement of the larger vertical gold nanorod array compared with the smaller one is due to its stronger scattering ability and greater extent of near-field enhancement at SHG fundamental wavelength. Our work shows that the diameter of gold nanorods is also an important factor to be considered in realizing strong plasmon enhancement of vertically aligned gold nanorod arrays.

Plasmonic nanorod array for effective photothermal therapy in hyperthermia

2021 ◽  
Author(s):  
Thanh Lam Bui ◽  
Ngoc Thanh Ho ◽  
Xuan Vuong Thi Thanh Ho ◽  
Dinh Nghi Ngo ◽  
Soon Hyuk Lim ◽  
...  
Keyword(s):  
Optical Properties ◽  
Cancer Cell ◽  
Photothermal Therapy ◽  
Aluminium Oxide ◽  
Nanorod Array ◽  
Cell Killing ◽  
Gold Nanorod ◽  
Nanorod Arrays ◽  
Anodic Aluminium Oxide ◽  
Oxide Substrates

Optical properties of anisotropic gold nanorod arrays inside anodic aluminium oxide substrates enhance the longitudinal absorption intensities and the hyperthermia cancer cell killing at 42.1 °C under photothermal laser exposures...

Ultrahigh surface sensitivity of deposited gold nanorod arrays for nanoplasmonic biosensing

2021 ◽  
Vol 23 ◽  
pp. 101046
Author(s):  
Abdul Rahim Ferhan ◽  
Youngkyu Hwang ◽  
Mohammed Shahrudin Bin Ibrahim ◽  
Shikhar Anand ◽  
Ahram Kim ◽  
...  
Keyword(s):  
Gold Nanorod ◽  
Nanorod Arrays ◽  
Surface Sensitivity

Effect of initial galvanic nucleation on morphological and optical properties of ZnO nanorod arrays

2015 ◽  
Vol 574 ◽  
pp. 177-183 ◽  
Author(s):  
Wiebke Riedel ◽  
Yang Tang ◽  
Wiebke Ohm ◽  
Jie Chen ◽  
Martha Ch. Lux-Steiner ◽  
...  
Keyword(s):  
Optical Properties ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays

Magnetic and optical properties of Co-doped ZnO nanorod arrays

2020 ◽  
Vol 135 (1) ◽  
Author(s):  
Wei Wang ◽  
Fuchun Zhang ◽  
Xiaoyang Wang ◽  
Shuili Zhang ◽  
Junfeng Yan ◽  
...  
Keyword(s):  
Optical Properties ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
Doped Zno ◽  
Co Doped

scholarly journals Silver-Nanoparticle-Decorated Gold Nanorod Arrays via Bioinspired Polydopamine Coating as Surface-Enhanced Raman Spectroscopy (SERS) Platforms

Coatings ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 198 ◽  
Author(s):  
Mehmet Yilmaz
Keyword(s):  
Raman Spectroscopy ◽  
Deposition Time ◽  
Surface Enhanced Raman Spectroscopy ◽  
Gold Nanorod ◽  
Nanorod Arrays ◽  
Plasmonic Material ◽  
Relative Standard ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Controlled Deposition

The controlled deposition of nanoparticles onto 3-D nanostructured films is still facing challenges due to the uncontrolled aggregation of colloidal nanoparticles. In the context of this study, a simple yet effective approach is demonstrated to decorate the silver nanoparticles (AgNP) onto the 3-D and anisotropic gold nanorod arrays (GNAs) through a bioinspired polydopamine (PDOP) coating to fabricate surface-enhanced Raman spectroscopy (SERS) platforms. Since the Raman reporter molecules (methylene blue, MB, 10 µM) were not adsorbed directly on the surface of the plasmonic material, a remarkable decrease in SERS signals was detected for the PDOP-coated GNAs (GNA@PDOP) platforms. However, after uniform and well-controlled AgNP decoration on the GNA@PDOP (GNA@PDOP@AgNP), huge enhancement was observed in SERS signals from the resultant platform due to the synergistic action which originated from the interaction of GNAs and AgNPs. I also detected that PDOP deposition time (i.e., PDOP film thickness) is the dominant parameter that determines the SERS activity of the final system and 30 min of PDOP deposition time (i.e., 3 nm of PDOP thickness) is the optimum value to obtain the highest SERS signal. To test the reproducibility of GNA@PDOP@AgNP platforms, relative standard deviation (RSD) values for the characteristic peaks of MB were found to be less than 0.17, demonstrating the acceptable reproducibility all over the proposed platform. This report suggests that GNA@PDOP@AgNP system may be used as a robust platform for practical SERS applications.

Self-Assembly of Vertically Aligned Gold Nanorod Arrays on Patterned Substrates

2012 ◽  
Vol 51 (35) ◽  
pp. 8732-8735 ◽  
Author(s):  
Thibaut Thai ◽  
Yuanhui Zheng ◽  
Soon Hock Ng ◽  
Stephen Mudie ◽  
Matteo Altissimo ◽  
...  
Keyword(s):  
Self Assembly ◽  
Gold Nanorod ◽  
Nanorod Arrays ◽  
Patterned Substrates ◽  
Vertically Aligned

Fabrication of gold nanorod arrays by templating from porous alumina

2005 ◽  
Vol 16 (10) ◽  
pp. 2275-2281 ◽  
Author(s):  
Dusan Losic ◽  
Joe G Shapter ◽  
James G Mitchell ◽  
Nicolas H Voelcker
Keyword(s):  
Porous Alumina ◽  
Gold Nanorod ◽  
Nanorod Arrays
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