Standing Ag nanoplate-built hollow microsphere arrays: Controllable structural parameters and strong SERS performances

Liu, Guangqiang; Cai, Weiping; Kong, Lingce; Duan, Guotao; Li, Yue; Wang, Jingjing; Zuo, Guomin; Cheng, Zhenxing

doi:10.1039/c1jm14296h

Cited by 49 publications

(37 citation statements)

References 65 publications

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“…Periodically arranged nanostructured arrays are an important basis of next‐generation devices and have potential applications in optics, electronics, optoelectronics, information storage, super‐hydrophobicity, biological and chemical sensing, and surface‐enhanced Raman scattering (SERS)‐based devices . So far, there have been many methods developed to fabricate these arrays.…”

Section: Introductionmentioning

confidence: 99%

Gold Binary‐Structured Arrays Based on Monolayer Colloidal Crystals and Their Optical Properties

Liu

Wang

et al. 2014

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A simple and flexible route is presented to fabricate a gold binary-structured ordered array by one step based on non-shadow deposition on a plasma etching-induced dualistic monolayer colloidal crystal. Such a Au binary-structure array is built of hexagonally arranged nanoshells and nanorings which stand between two adjacent nanoshells. Six gold nanorings surround each nanoshell. The obtained arrays exhibit both the controllable surface-plasmon-resonance (SPR) properties of Au nanoshells and the strong electromagnetic-field-enhancement effects of Au nanorings, with the high structural stability of ordered arrays, and show promising potential as the substrate of surface-enhanced Raman scattering (SERS)-based devices. The method could also be suitable for fabrication of other material binary-structured arrays. This study is important in designing and fabricating basal materials for the next generation of multifunctional nanostructured devices.

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Section: Introductionmentioning

confidence: 99%

Gold Binary‐Structured Arrays Based on Monolayer Colloidal Crystals and Their Optical Properties

Liu

Wang

et al. 2014

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“…Moreover, templates based on NIL are fabricated, followed by electroless growth of gold pillars . Additionally, NSL substrates are employed as templates for electrodeposition of silver crystals using a constant low current density of 5 μA cm −2 over 10 h . Finally, EBL‐prepared template structures are employed as seeds for the electrodeposition of gold crystalline structures.…”

Section: Introductionmentioning

confidence: 99%

“…Here, the size of the metallic particles is in the micrometer range . However, all mentioned fabrication techniques combining top‐down and bottom‐up approaches show drawbacks, e.g., fabrication time (for constant current), hazardous reducing agents and the low variability of the pattern size as well as inhomogeneity when applying NSL for fabricating the template. As an alternative, templates inspired by nature, e.g., diatom biosilica, rose petals or butterfly wings, are employed; however, no bulk production is achieved, and these procedures show a lack of repeatability.…”

Section: Introductionmentioning

confidence: 99%

TopUp Plasmonic Arrays for Surface‐Enhanced Raman Spectroscopy

Patze

Huebner

Weber

et al. 2016

Adv Materials Inter

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III in paprika powder, [ 11 ] azorubine in drinks, [ 12 ] or melamine in milk. [ 13 ] In clinical application schemes, SERS shows high potential as a point-of-care method for the online monitoring of morphine, methadone, or dopamine [ 14 ] in intravenous delivery tubing or of levofl oxacin in urine. [ 15 ] Moreover, the detection of environmentally relevant and harmful substances, i.e., arsenic (III) in lake water samples [ 16 ] or veterinary drugs such as metronidazole and ronidazole in various water sources, [ 17 ] extends the application fi eld of SERS. All of the above-mentioned application examples share the enhancement of the naturally weak Raman signal by employing nanostructured metal surfaces, so-called SERS substrates.The applied nanostructured SERS substrates are commonly generated via wet chemistry [ 18 ] and bottom-up [ 19 ] or topdown [ 20,21 ] approaches. Metal colloids can be prepared in large quantities via wet chemical reactions, e.g., the reduction of silver or gold salts to the pure metal. In general, metallic nanoparticle suspensions are characterized by easy handling and fast production in high quantities. In contrast, limitations are related to their low time stability, poor batch-to-batch reproducibility, and spectral interference originating from the reaction participants. As an alternative, laser ablation techniques are employed to fabricate metal nanoparticles without stabilization agents on their surfaces. [ 22 ] Moreover, planar substrates produced by immobilization of metallic nanoparticles based on a bottom-up technique are characterized by low homogeneity across a large area and low batch-to-batch quality.Top-down techniques can overcome some of the above-mentioned limitations by structuring thin metal layers using lithographic techniques, e.g., electron beam lithography (EBL) [ 21,23 ] or nanoimprint lithography (NIL). [ 24 ] These procedures lead to highly homogenous planar substrates with well-defi ned structures and plasmonic resonance tunabilities. However, due to the multiple processing steps required for top-down techniques, the manufacturing time for a given structure is extensive and the process is expensive. Thus, the top-down production of SERS active substrates is realized in small quantities.By an appropriate combination of bottom-up and top-down techniques, the creation of a SERS active substrate that uses the advantages and avoids the drawbacks of each applied fabrication technique becomes feasible. In principle, a sophisticated top-down approach is improved by a fast and easy bottom-up method. As an example, particle-in-cavity structures [ 25 ] were created for which the template (the cavity structure) is fabricated by nanosphere lithography (NSL) [ 25 ] following a porous By combining a bottom-up process with top-down fabricated templates, the benefi ts of both methods are joined by creating so-called TopUp plasmonic arrays for surface-enhanced Raman spectroscopy (SERS). The morphological and optical characterization of the TopUp substrates illustrates exceptional...

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“…Due to the interstitial geometry in the PS monolayer colloidal crystals, by using them as the template or mask and depositing some materials into the interstitials of the template, we can fabricate the nanostructured arrays with various structural parameters, such as nanohole arrays [30], nanoplate arrays [8], nanorod arrays [31], etc., depending on the deposition routes. As for removal of the PS template, it is easily dissolved by immersion into the methylene chloride (CH 2 Cl 2 ) solution and removed completely by subsequently cleaning.…”

Section: Fabrication Of Gold Nanostructured Arraysmentioning

confidence: 99%

“…Periodically arranged nanostructured arrays are an important basis of next-generation devices and have potential applications in fields such as optics [1], electronics [2], optoelectronics [3], information storage [4], super-hydrophobicity [5], biological and chemical sensing [6], and surface-enhanced Raman scattering (SERS)-based devices [7][8][9]. Thus far, there have been many methods developed to fabricate these arrays, including aluminum oxide (AAO) template technique [10,11], nano-imprint lithography [12], electron beam ligthography [13] and colloidal lithography [14][15][16], etc.…”

Section: Introductionmentioning

confidence: 99%

Morphological and Structural Control of Organic Monolayer Colloidal Crystal Based on Plasma Etching and Its Application in Fabrication of Ordered Gold Nanostructured Arrays

Liu

Cai

2016

Crystals

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Abstract:The organic monolayer colloidal crystals, which are usually prepared by self-assembling, could be used as templates, due to their interstitial geometry, for the periodically arranged nanostructured arrays, which have important applications in many fields, such as photonic crystals, information storage, super-hydrophobicity, biological and chemical sensing. Obviously, the structures of the obtained arrays mainly depend on those of the templates. However, the self-assembled monolayer colloidal crystal is exclusive in structure and for its hexagonal close-packed colloidal arrangement, leading to the limitation of the monolayer colloidal crystal as the template for the nanostructured arrays. Therefore, structural diversity is important in order for colloidal crystals to be used as the templates for various nanostructured arrays. Recently, there have been some reports on the morphological and structural manipulation of the organic monolayer colloidal crystals. In this review article, we focus on the recent progress in morphological and structural manipulation of polystyrene monolayer colloidal crystals based on plasma etching, and its application in the fabrication of the ordered gold nanostructured arrays with different structures, mainly including close-packed monolayer colloidal crystal and its transferrable property; structural manipulation based on plasma etching; and fabrication of gold nanostructured arrays based on varied monolayer colloidal crystals as template.

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Standing Ag nanoplate-built hollow microsphere arrays: Controllable structural parameters and strong SERS performances

Cited by 49 publications

References 65 publications

Gold Binary‐Structured Arrays Based on Monolayer Colloidal Crystals and Their Optical Properties

Gold Binary‐Structured Arrays Based on Monolayer Colloidal Crystals and Their Optical Properties

TopUp Plasmonic Arrays for Surface‐Enhanced Raman Spectroscopy

Morphological and Structural Control of Organic Monolayer Colloidal Crystal Based on Plasma Etching and Its Application in Fabrication of Ordered Gold Nanostructured Arrays

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