Growth of large aspect ratio AuAg bimetallic nanowires on Si(110) substrate

Bhukta, Anjan; Guha, Puspendu; Satpati, Biswarup; Maiti, Paramita

doi:10.1016/j.apsusc.2017.02.200

Cited by 6 publications

(3 citation statements)

References 35 publications

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“…14,15 The elemental combinations include gold/silver (Au/Ag), platinum/nickel (Pt/Ni), platinum/cobalt (Pt/Co), platinum/copper (Pt/Cu), gold/copper (Au/Cu), Cu/Ni, among others. [16][17][18][19][20][21][22][23][24][25][26][27] Compared to those groups that include noble metals, the pure use of non-noble metals can be more benecial due to their low cost and abundant content in the Earth's crust. 28,29 Take Cu/Ni for example, such combination has been widely used in production of anticorrosion coins and serving as catalyst in various typical hydrogenation reactions.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of Cu/Ni alloy nanospheres with tunable size and elemental ratio

2017

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Section: Introductionmentioning

confidence: 99%

Facile synthesis of Cu/Ni alloy nanospheres with tunable size and elemental ratio

2017

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“…In the past decade, there have been incredible considerations on the fabrication and design of metal NSs on Si-based templates due to their prominent antibacterial, biocompatibility, catalysis, and optoelectronic properties. − Among the existing metal NSs, noble metal NSs have shown tremendous surface wetting properties in addition to narrow plasmon resonance. These highlighting factors have inspired the majority of studies in this area of interest for effective and innovative investigations. − These metal NSs demonstrate captivating properties on detection sensibilities and capabilities, which are strongly dependent on the size, shape, dimension, and separation between the metal NSs. , In a precise sense, the controllability over the size, shape, and distribution of metal NSs plays a vital role in the investigation of chemical and biomolecular detection in the new branch of sensing. − Furthermore, an engineering shape anisotropy of metal structures can influence the plasmonic response of metal NSs.…”

Section: Metal Nanodendrites Decorated On Si Substratementioning

confidence: 99%

Silicon Nanostructures for Molecular Sensing: A Review

Vendamani

Rao

Pathak

2022

ACS Appl. Nano Mater.

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This review presents a comprehensive synopsis of the recent developments and achievements in the research of nanosensors composed of plasmonic nanoparticles (NPs) and silicon nanostructures (NSs) for effective trace-level molecular detection. This review focuses intensively on the methodologies for the preparation and enforcement of a variety of SiNSs including (a) metal nanoparticles decorated silicon nanowires (NWs), (b) metal nanodendrites (NDs) on Si substrate, (c) plasmonic NPs decorated nanocrystalline porous silicon (pSi), and (d) silicon composed hybrid nanostructures with favorable parameters of importance in sensing. Furthermore, their potency in wide molecular sensing applications, especially chemical, biological, and explosive molecules based on surface enhanced Raman scattering (SERS) phenomenon is discussed in detail. Various demonstrations and categorizations are provided on the topic of Si-based NSs for a clear understanding to diverse readers. A roadmap is also provided at the end for achieving superior sensing materials or devices in the future.

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“…One-dimensional (1D) bimetallic nanostructures, especially 1D segmented metal nanocrystals, have stimulated extensive research enthusiasm because of their synergistic effect and prominent optical and electrical performance , and potential applications in catalysis, , photoelectric devices, , chips, , SERS, , and tumor imaging . To acquire desirable properties and promising applications, it is very important to fabricate well-defined, high-quality, and structure-controlled 1D segmented metal nanocrystals via solution-phase strategies.…”

Section: Introductionmentioning

confidence: 99%

Revealing the Aqueous Sequential Growth Mechanism between Au and Ag Nanocrystals of Segmented Ag-Au-Ag Heterojunction Nanorods via Redox Reaction Kinetics

et al. 2022

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Although the growth mechanisms (e.g., seed-induced growth and capping agent orientation) of bimetal nanocrystals (e.g., core–shell, alloy, segmented, and branched) from artificial experimental speculation and theoretical calculation have been widely accepted, precisely revealing their growth mechanisms is still tremendously challenging. In this work, we utilized redox reaction kinetics for the first time to successfully reveal the aqueous sequential growth mechanism between Au and Ag nanocrystals of segmented Ag-Au-Ag heterojunction nanorods (HJNRs) in a one-step and high-temperature aqueous system. Herein, electrode potentials of different electrical pairs (e.g., Ag+/Ag and AuCl4 –/Au) at 200 °C could be calculated through using the Helgeson–Kirkham–Flowers state and other equations, from which whether Au and Ag nanocrystals grew successively and formed segmented Ag-Au-Ag HJNRs could be correctly assessed. The redox reaction kinetics mechanism can also explain well the aqueous-phase growth mechanisms of other bimetal nanocrystals and paves a promising avenue for the design and synthesis of other one-dimensional segmented metal nanostructures.

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Growth of large aspect ratio AuAg bimetallic nanowires on Si(110) substrate

Cited by 6 publications

References 35 publications

Facile synthesis of Cu/Ni alloy nanospheres with tunable size and elemental ratio

Facile synthesis of Cu/Ni alloy nanospheres with tunable size and elemental ratio

Silicon Nanostructures for Molecular Sensing: A Review

Revealing the Aqueous Sequential Growth Mechanism between Au and Ag Nanocrystals of Segmented Ag-Au-Ag Heterojunction Nanorods via Redox Reaction Kinetics

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