Synthesis methods of gold nanoparticles for Localized Surface Plasmon Resonance (LSPR) sensor applications

Samsuri, Nurul Diyanah; Mukhtar, Wan Maisarah; Rashid, Affa Rozana Abdul; Dasuki, Karsono Ahmad; Yussuf, Awangku Abdul Rahman Hj. Awangku

doi:10.1051/epjconf/201716201002

Cited by 18 publications

(7 citation statements)

References 58 publications

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“…Obviously, LSPR of AuNPs resulted in a strong absorbance band in the visible region around 500 nm to 600 nm in which indirectly verified the presence of AuNPs on the substrate via drop-casting deposition technique. The maximum optical absorbance peak for GO were found around 286 nm to 296 nm as illustrated in Figure 5, in which shows an excellent agreement with previous studies (Samsuri et al, 2017). with operating wavelength at 1550nm resulted better sensitivity than 1310nm since less attenuation occurred at 1550nm (Kamarulzaman & Mukhtar, 2020).…”

Section: Methodssupporting

confidence: 89%

Identification of Recycled Cooking Oil by Varying Number of Au/GO Coated Fiber Optic’s Loop Ring

Mukhtar¹,

Manaf²,

Halim³

2021

ASMScJ

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This study investigates the effect gold nanoparticles (Au)/graphene oxide (GO) coated fibre optics with various number of loop ring in identifying recycled cooking oil based on their frying time. Various layers of gold nanoparticles (AuNP) suspension were deposited onto the substrate via drop casting technique. Few material characterizations were performed such as Fourier Transform Infrared (FTIR) spectroscopy, Ultraviolet Visible (UV-Vis) spectroscopy and refractometer analysis. Three macrobending structures of Au/GO coated fiber optic’s loop ring such as single, double and triple loops with diameter of 1.5cm were formed to generate large area of evanescent field around the fibre and to excite surface plasmon polaritons due to the interaction between AuNPs and analytes. Cooking oil samples with different frying time such as 14 minutes, 28 minutes and 42 minutes were prepared as analytes. The FTIR analysis revealed some changes in the transmittance percent of some bands as well as some slight shifts in the exact position of the bands due to the different of fatty acid composition. As the Au/GO coated fibre optics were immersed into the samples, the penetration depths were obtained as 142.75nm and 168.91nm at operating wavelengths of λ=1310nm and λ=1550nm, respectively. By using 1550nm operating wavelength due to its greater penetration depth than 1310nm, triple loop rings fibre optics coated with two layers of AuNP and one layer of GO exhibits a linear consistency with maximum sensitivity up to 69.17% due to the formation of large evanescent field around the loop area and intense SPP excitation.

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Section: Methodssupporting

confidence: 89%

Identification of Recycled Cooking Oil by Varying Number of Au/GO Coated Fiber Optic’s Loop Ring

Mukhtar¹,

Manaf²,

Halim³

2021

ASMScJ

Self Cite

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“…Au NPs have been recognized as outstanding properties in LSPR biosensors according to the spectral response to the NPs surface, and the simplicity of observing the signal of light according to their absorption and durable scattering [ 147 ]. An optical fiber biosensor based on LSPR for the capture of P. aeruginosa and E. coli monitored by antibiotic refereed lysis has been revealed in rapid drug susceptibility testing.…”

Section: Gold Nanoparticles For Antimicrobial Resistancementioning

confidence: 99%

Silver and Gold Nanoparticles for Antimicrobial Purposes against Multi-Drug Resistance Bacteria

et al. 2022

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Several pieces of research have been done on transition metal nanoparticles and their nanocomplexes as research on their physical and chemical properties and their relationship to biological features are of great importance. Among all their biological properties, the antibacterial and antimicrobial are especially important due to their high use for human needs. In this article, we will discuss the different synthesis and modification methods of silver (Ag) and gold (Au) nanoparticles and their physicochemical properties. We will also review some state-of-art studies and find the best relationship between the nanoparticles’ physicochemical properties and potential antimicrobial activity. The possible antimicrobial mechanism of these types of nanoparticles will be discussed in-depth as well.

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“…Aggregation was identified by DLS measurements and a red shift in the LSPR peak, typical for AuNPs within close proximity of each other. 65,66 This publication therefore shows how controlled radical polymerization techniques can be useful in generating aggregating particle systems.…”

Section: Temperature-and Ionic Strength-responsive Nanoparticle Aggregationmentioning

confidence: 95%

Multi-stimuli-responsive aggregation of nanoparticles driven by the manipulation of colloidal stability

et al. 2021

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Synthesis methods of gold nanoparticles for Localized Surface Plasmon Resonance (LSPR) sensor applications

Cited by 18 publications

References 58 publications

Identification of Recycled Cooking Oil by Varying Number of Au/GO Coated Fiber Optic’s Loop Ring

Identification of Recycled Cooking Oil by Varying Number of Au/GO Coated Fiber Optic’s Loop Ring

Silver and Gold Nanoparticles for Antimicrobial Purposes against Multi-Drug Resistance Bacteria

Multi-stimuli-responsive aggregation of nanoparticles driven by the manipulation of colloidal stability

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