Physical process-aided fabrication of periodic Au–M (M = Ag, Cu, Ag–Cu) alloyed nanoparticle arrays with tunable localized surface plasmon resonance and diffraction peaks

Zhang, Honghua; Wang, Chu; Li, Huilin; Jiang, Longfa; Men, Dandan; Wang, Jun; Xiang, Junhuai

doi:10.1039/c7ra13567j

Cited by 19 publications

(18 citation statements)

References 36 publications

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“…The 2D Au nanospheres arrays were prepared on a quartz substrate by using PS colloidal monolayer arrays as initial templates, followed by depositing the Au layer and subsequent annealing, as reported previously [ 27 , 35 , 36 , 37 ]. Briefly, the PS colloidal monolayer arrays were fabricated on a glass slide by self-assembly at air/water interface ( Figure 1 a).…”

Section: Methodsmentioning

confidence: 99%

2D Au Nanosphere Arrays/PVA-PBA-Modified-Hydrogel Composite Film for Glucose Detection with Strong Diffraction Intensity and Linear Response

Xiang

Men

et al. 2019

Nanomaterials

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A novel glucose sensor was reported that consisted of two-dimensional (2D) Au nanosphere arrays and glucose-responsive hydrogel film. This sensor exhibited an intense diffraction signal and an obvious diffraction color on a quartz slide due to the strong diffraction intensity of the Au nanosphere arrays. Thus, glucose was detected via the variation of diffraction wavelength and diffraction color, without a high reflective mirror. In addition, by introducing poly(vinyl alcohol) (PVA) to crosslink the phenylboronic acid (PBA)-modified hydrogel film, the diffraction wavelength of the 2D Au nanosphere arrays/hydrogel composite film shifted in the same direction in high ionic strength condition. In particular, it showed a nearly linear red-shift when the glucose concentration increased from 0 mM to 20 mM. Moreover, this glucose sensor displayed good reproducibility. The nearly linear response and good reproducibility were highly helpful for improving practical application of this glucose sensor.

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Section: Methodsmentioning

confidence: 99%

2D Au Nanosphere Arrays/PVA-PBA-Modified-Hydrogel Composite Film for Glucose Detection with Strong Diffraction Intensity and Linear Response

Xiang

Men

et al. 2019

Nanomaterials

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“…As a conventional approach for producing thin film and multiple layers of metals, metal alloys, and metal oxides the method still received significant studies until now [5][6][7][8][9][10][11][12][13][14][15][16]. To some extent, the technique has been also used for immobilizing nanoparticles (NPs) on a solid substrate [17][18][19][20][21][22], or decorating nanoparticles on other metal/oxides nano-micron particles as the supporters [23][24][25][26][27][28][29][30][31][32][33]. In order to have NPs instead of big aggregate or thin film very short sputtering time, that is in order of few to several tens of second [23,27], or low pressure [24,25,27] or post heat-treatment [29,30] has been used.…”

Section: Brief History and Background Of Sputtering Onto A Liquidmentioning

confidence: 99%

“…To some extent, the technique has been also used for immobilizing nanoparticles (NPs) on a solid substrate [17][18][19][20][21][22], or decorating nanoparticles on other metal/oxides nano-micron particles as the supporters [23][24][25][26][27][28][29][30][31][32][33]. In order to have NPs instead of big aggregate or thin film very short sputtering time, that is in order of few to several tens of second [23,27], or low pressure [24,25,27] or post heat-treatment [29,30] has been used. The NPs can be sandwiched in two solid layer via alternative sputtering of two or more targets to prevent their growth and attain larger numbers of nanoparticles dispersed in solid [34].…”

Section: Brief History and Background Of Sputtering Onto A Liquidmentioning

confidence: 99%

“…Thus, it is challenging to create conditions favourable for co-reduction and alloying rather than for heterogeneous structure formation. Sputtering techniques, on the other hand, can produce atoms or clusters of any metal at once by the physical bombardment of energetic gas ions onto metal targets [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. This can allow for the production of alloy NPs of various bimetallic systems.…”

Section: Brief History and Background Of Sputtering Onto A Liquidmentioning

confidence: 99%

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Sputtering onto a liquid: interesting physical preparation method for multi-metallic nanoparticles

Nguyen

Yonezawa

2018

Science and Technology of Advanced Materials

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The young history of sputtering onto a liquid features great achievements in the green production of various metal and metal oxide nanoparticles (NPs) and nanoclusters (NCs). Studies on how the sputtering parameters affect the properties of NPs and NCs have elucidated their formation mechanism and marked a crucial role of liquid matrix in the nucleation and growth of particles, controlling their various properties. Current research has been devoted to making alloy bi-and trimetallic NPs with a high level of control over the NP structure, composition, and size via well-designed target systems, sputtering steps, and liquid matrix materials. In this minireview, we discuss the recent advances in the use of various types of targets to prepare different bi-and trimetallic NPs. In single target sputtering, systems with alternative configurations of metals, alloy targets, monometallic targets in sequence, and a combination of sputtering and chemical reactions have been developed. On the other hand, a double head system was introduced to widen the range of controllable sputtering parameters yielding more versatility in particle composition and fine structure. The synergistic and tuneable properties exhibited by the multi-metallic components in small NPs and NCs for their use in catalysis and optical applications are discussed.

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“…The LSPR tunability is one of the key features that has been widely exploited in surface-enhanced Raman spectroscopy (SERS) to design high-performance substrates for the detection of chemical species [12]. Various approaches such as alteration in shape and size of nanoparticles and variation in elemental composition and dielectric constant of the medium have been adopted for the tuning of LSPR from visible to near-infrared wavelengths [13][14][15][16]. The tailoring of the morphology of nanoparticles is, however, more desirable over these approaches as it offers not only the LSPR tunability but also the large electric field enhancement at sharp points and nanogaps [17].…”

Section: Introductionmentioning

confidence: 99%

Trace-Level Detection of Explosive Molecules with Triangular Silver Nanoplates-Based SERS Substrates

Kumar

Soni

2021

Plasmonics

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We report a simple route to design highly sensitive triangular silver nanoplates (TSNPs)-based SERS substrate for the tracelevel detection of explosive molecules. The size-dependent localized surface plasmon resonance (LSPR) tunability for the synthesis of TSNPs is achieved by controlling reaction kinetics and seed volume in a modified seed-mediated approach. The computed extinction spectra of TSNP, using the finite-difference time-domain (FDTD) method, are in excellent agreement with the experimental results, therefore assisting further in the investigation of the plasmonic properties of TSNP. The higher electric field enhancement offered by TSNP is systematically investigated by performing the FDTD simulations for various sizes and corner rounding of TSNP. The FDTD results show that the dipolar plasmon resonance wavelength, size, and corner rounding of TSNP are the principal contributing factors for designing the high-performance SERS substrate. Herein, we have used a portable Raman system for the SERS-based detection of three important explosive molecules: picric acid (PA), ammonium nitrate (AN), and 2, 4-dinitrotoluene (DNT). The TSNP-based SERS substrates display excellent intensity enhancement factors of ~ 10 7 for rhodamine 6G (R6G) and PA and ~ 10 5 for AN. The high sensitivity of SERS substrate with limit-of-detection (LOD) of value 2.3 × 10 −11 M for PA and 3.1 × 10 −8 M for AN and effective batch-to-batch reproducibility for DNT, thus offering its potentials for field detection of explosive molecules at trace-level.

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Physical process-aided fabrication of periodic Au–M (M = Ag, Cu, Ag–Cu) alloyed nanoparticle arrays with tunable localized surface plasmon resonance and diffraction peaks

Abstract: An interesting and facile physical route is proposed to fabricate multi-elemental alloyed nanoparticle arrays with controllable size, composition and periodicity.

Cited by 19 publications

References 36 publications

2D Au Nanosphere Arrays/PVA-PBA-Modified-Hydrogel Composite Film for Glucose Detection with Strong Diffraction Intensity and Linear Response

2D Au Nanosphere Arrays/PVA-PBA-Modified-Hydrogel Composite Film for Glucose Detection with Strong Diffraction Intensity and Linear Response

Sputtering onto a liquid: interesting physical preparation method for multi-metallic nanoparticles

Trace-Level Detection of Explosive Molecules with Triangular Silver Nanoplates-Based SERS Substrates

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