Large-Area Broadband Near-Perfect Absorption from a Thin Chalcogenide Film Coupled to Gold Nanoparticles

2019 ◽  
Vol 11 (5) ◽  
pp. 5176-5182 ◽  
Author(s):  
Tun Cao ◽  
Kuan Liu ◽  
Li Lu ◽  
Hsiang-Chen Chui ◽  
Robert E. Simpson
Keyword(s):  
Gold Nanoparticles ◽  
Large Area ◽  
Perfect Absorption ◽  
Chalcogenide Film

Large-area two-dimensional photonic crystals of metallic nanocylinders based on colloidal gold nanoparticles

2007 ◽  
Vol 90 (13) ◽  
pp. 133114 ◽  
Author(s):  
Xinping Zhang ◽  
Baoquan Sun ◽  
Hongcang Guo ◽  
Nicolas Tetreault ◽  
Harald Giessen ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Photonic Crystals ◽  
Colloidal Gold ◽  
Two Dimensional ◽  
Large Area ◽  
Colloidal Gold Nanoparticles

scholarly journals Fast Assembly of Gold Nanoparticles in Large-Area 2D Nanogrids Using a One-Step, Near-Infrared Radiation-Assisted Evaporation Process

ACS Nano ◽  
2016 ◽  
Vol 10 (2) ◽  
pp. 2232-2242 ◽  
Author(s):  
André Utgenannt ◽  
Ross Maspero ◽  
Andrea Fortini ◽  
Rebecca Turner ◽  
Marian Florescu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Infrared Radiation ◽  
Near Infrared ◽  
Evaporation Process ◽  
Large Area ◽  
Near Infrared Radiation ◽  
One Step

Fabrication of large‐area ordered array of gold nanoparticles on c‐Si substrate and its characterisation through reflectance spectra

2016 ◽  
Vol 11 (12) ◽  
pp. 819-821 ◽  
Author(s):  
Karishma Meena ◽  
Hanish Kumar ◽  
Arjyajyoti Goswami ◽  
Sivanandam Aravindan ◽  
Paruchuri Venkateshwara Rao
Keyword(s):  
Gold Nanoparticles ◽  
Reflectance Spectra ◽  
Si Substrate ◽  
Large Area ◽  
Ordered Array

scholarly journals Seed-Mediated Electroless Deposition of Gold Nanoparticles for Highly Uniform and Efficient SERS Enhancement

Nanomaterials ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 185 ◽  
Author(s):  
Junqi Tang ◽  
Quanhong Ou ◽  
Haichun Zhou ◽  
Limin Qi ◽  
Shiqing Man
Keyword(s):  
Gold Nanoparticles ◽  
Ascorbic Acid ◽  
Electroless Deposition ◽  
Trisodium Citrate ◽  
Mixed Solution ◽  
Large Area ◽  
Reaction Conditions ◽  
Au Nps ◽  
Sers Enhancement ◽  
Seed Mediated

A seed-mediated electroless deposition (SMED) approach for fabrication of large-area and uniform gold nanoparticle films as efficient and reproducible as surface-enhanced Raman scattering (SERS) substrates was presented. This approach involved a seeding pretreatment procedure and a subsequent growth step. The former referred to activation of polylysine-coated glass slides in gold seed solution, and the latter required a careful control of the reactant concentration and reaction time. With the aid of gold seeds and appropriate reaction conditions, a large-area and uniform nanofilm with evenly distributed gold nanoparticles (Au NPs) was formed on the surface of the substrates after adding a mixed solution containing ascorbic acid and trisodium citrate. The morphology of the Au nanofilm was examined by scanning electron microscopy. The size evolution of Au NPs on the surface of the substrates was analyzed in detail. The nanofilm substrate was prepared by reaction conditions of the seeded activation process: 10 mL ascorbic acid and trisodium citrate mixture and 30 min of soaking time, which exhibited an excellent uniformity and reproducibility of SERS enhancement with relative standard deviation (RSD) values of less than 8% (particularly, a RSD value of 3% can be reached for the optimized measurement). Compared to the common electroless deposition, the seed-mediated electroless deposition possessed inherent advantages in controllability, reproducibility, and economic benefit.

Improving yields in bridging silicon nanowires with rational control of the bridge characteristics

2013 ◽  
Vol 1551 ◽  
pp. 111-116
Author(s):  
Jin Yong Oh ◽  
M. Saif Islam
Keyword(s):  
Gold Nanoparticles ◽  
Silicon Nanowires ◽  
Deposition Time ◽  
Silicon Nanowire ◽  
Large Area ◽  
Surface Deposition ◽  
Rational Control ◽  
Poor Adhesion

ABSTRACTWe present a practical technique for fabricating silicon nanowire bridges on pre-patterned Si electrodes arrays. Silicon nanowires, catalyzed by gold nanoparticles, were grown on silicon electrodes from HF treated Au colloid as well as on electrodes treated with poly-L-lysine. Negligible growth was observed on untreated substrates due to poor adhesion of gold nanoparticles to the hydrogen terminated Si surface. In contrast, the treatments significantly increased occurrence of silicon nanowire bridges, which can be attributed to improved deposition of gold nanoparticles on the surface. Deposition time and concentrations of colloids also affected the occurrence of SiNW bridges. These results indicate that our techniqute for fabricating nanowire bridge arrays will be useful for large-area nanowire applications.

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