Growth of High-Aspect-Ratio Gold Nanowires on Silicon by Surfactant-Assisted Galvanic Reductions

Huang, Ting; Chen, Ying-Chieh; Ko, Hsin Chun; Huang, Hsiang‐Po; Wang, Chia Hsin; Lin, Hsiu-Li; Chen, Fu‐Rong; Kai, Ji Jung; Lee, Chi Young; Chiu, Hsin‐Tien

doi:10.1021/la8000575

Cited by 23 publications

(23 citation statements)

References 45 publications

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“…[26][27][28] The surfactant may preferentially bind to a certain crystal facet, directing 1D growth of the long-axis facet (along the [110] direction) and restricting the metal growth to the short-axis facet. [45][46][47] Therefore, gold nanowires are formed (Fig. 5a).…”

Section: Resultsmentioning

confidence: 99%

CO2-responsive TX-100 emulsion for selective synthesis of 1D or 3D gold

Zhang

Zhao

et al. 2010

Soft Matter

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The effect of CO 2 on the properties of water/poly(oxyethylene)iso-octylphenyl ether (TX-100)/ isooctane emulsions was investigated by direct observation, small angle X-ray scattering (SAXS), and UV-vis spectroscopy at 303.2 K in the pressure range 0-5 MPa. It was demonstrated that the droplet size of the emulsion was sensitive to the pressure of CO 2 , and the droplet size can be tuned in a wide range from the micron to the nanometre scale. When the CO 2 pressure was 3.90 MPa, the droplet size reached a minimum value of 92 nm. To demonstrate the utilization of the CO 2 -responsive water/TX-100/isooctane emulsion, gold particles were synthesized using HAuCl 4 as a gold precursor and TX-100 as a reducing reagent. It was shown that gold particles with different morphologies, such as nanowires, nanorods, and polyhedral nanocrystals could be synthesized by controlling the pressure of CO 2 .

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Section: Resultsmentioning

confidence: 99%

CO2-responsive TX-100 emulsion for selective synthesis of 1D or 3D gold

Zhang

Zhao

et al. 2010

Soft Matter

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“…[15][16][17][18] Previously, we demonstrated facile electrochemical depositions of various Au nanostructures on carbon, silicon, and glass substrates. [19][20][21] In this study, we wish to report the simple electrochemical growth of several Au nanostructures, including Au nanothorns (NTs), Au nanocorals (NCs), Au nanoslices (NSs), and Au nanowires (NWs), on exible commercial transparencies made from polyethylene terephthalate (PET). The nanostructures, especially the high aspect ratio one-dimensional NWs, provide greatly increased surface areas.…”

Section: Introductionmentioning

confidence: 99%

Growth of gold nanowires on flexible substrate for highly sensitive biosensing: detection of thrombin as an example

2013

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We demonstrated a facile fabrication of high density Au nanostructures including nanothorns (NTs), nanocorals (NCs), nanoslices (NSs), and nanowires (NWs) which were electrochemically grown on flexible plastic substrates of polyethylene terephthalate (PET). A thrombin-binding aptamer was immobilized on the surfaces of the Au nanostructures to form highly sensitive electrochemical impedance spectroscopic (EIS) biosensors for thrombin recognition. The binding of thrombin to the aptamer sequence was monitored by EIS in the presence of [Fe(CN) 6 ] 3À/4À (aq). The protein (1-50 pM) was detected linearly by the Au nanostructures. Among them, the Au NWs exhibited excellent thrombin detection performances. The biosensor provided high sensitivity, selectivity, and stability due to its high surface area.

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“…On the other hand, the properties of 1D nanostructure were greatly dependent on the aspect ratio [7-9], longer or higher aspect ratio has now in many cases emerged as one of the focuses of the synthesis of 1D nanostructures. As a consequence, much effort has been devoted to the synthesis of 1D nanostructures with high aspect ratio, such as capping reagents or surfactants-assisted synthesis of high-aspect-ratio hydroxyapatite [10] and CdS [11] nanorods, vanadium oxide [12] and Te [13] nanobelts, Au [14] and aluminum borate [15] nanowires; seed-mediated synthesis of high-aspect-ratio Au nanorods [16] and ZnO nanowires and nanotubes [17]; process conditions-optimized synthesis of high-aspect-ratio titanate nanofibers/nanotubes [18], Cu nanowires [19], ZnO nanorods/nanowires [20], and magnesium oxysulfate nanowires [21]. …”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Formation of the Head-to-Head Coalesced Szaibelyite MgBO2(OH) Nanowires

et al. 2009

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The significant effect of the feeding mode on the morphology and size distribution of the hydrothermal synthesized MgBO2(OH) is investigated, which indicates that, slow dropping rate (0.5 drop s−1) and small droplet size (0.02 mL d−1) of the dropwise added NaOH solution are favorable for promoting the one-dimensional (1D) preferential growth and thus enlarging the aspect ratio of the 1D MgBO2(OH) nanostructures. The joint effect of the low concentration of the reactants and feeding mode on the hydrothermal product results in the head-to-head coalesced MgBO2(OH) nanowires with a length of 0.5–9.0 μm, a diameter of 20–70 nm, and an aspect ratio of 20–300 in absence of any capping reagents/surfactants or seeds.

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Growth of High-Aspect-Ratio Gold Nanowires on Silicon by Surfactant-Assisted Galvanic Reductions

Cited by 23 publications

References 45 publications

CO2-responsive TX-100 emulsion for selective synthesis of 1D or 3D gold

CO2-responsive TX-100 emulsion for selective synthesis of 1D or 3D gold

Growth of gold nanowires on flexible substrate for highly sensitive biosensing: detection of thrombin as an example

Hydrothermal Formation of the Head-to-Head Coalesced Szaibelyite MgBO2(OH) Nanowires

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