Nanostructured Ag surface fabricated by femtosecond laser for surface-enhanced Raman scattering

Chang, Han Wei; Tsai, Yu Chen; Cheng, Chung-Wei; Lin, Chih‐Yung; Lin, Yen Wen; Wu, Tianwei

doi:10.1016/j.jcis.2011.04.005

Cited by 43 publications

(20 citation statements)

References 32 publications

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“…Printed AgNWs have higher WF than Ag films (≈4.3 eV) and Au films in air because the NWs include CuO which has a deep valence band edge (≈5.42 eV) . X‐ray photoelectron spectroscopy (XPS) of both the printed AgNW and the vacuum‐deposited Ag film showed binding energies of Ag 3d 5/2 at 368.2 eV and Ag 3d 3/2 at 374.2 eV, which correspond to pure metallic Ag (Figure S9a,b, Supporting Information) . However, in the O 1s spectrum, AgNW had three clear peaks at binding energies of 529.7, 531.4, and 532.9 eV, which are originated from the O in CuO, in Cu(OH) 2 , and in a small amount of adsorbed H 2 O molecules on the surface of AgNW, respectively, whereas the Ag film had a small peak at 530.4 eV that is attributed to O adsorbed to the electrophilic state of Ag (Figure S9c, Supporting Information) .…”

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confidence: 99%

Versatile Metal Nanowiring Platform for Large‐Scale Nano‐ and Opto‐Electronic Devices

et al. 2016

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A versatile metal nanowiring platform enables the fabrication of Ag nanowires (AgNW) at a desired position and orientation in an individually controlled manner. A printed, flexible AgNW has a diameter of 695 nm, a resistivity of 5.7 μΩ cm, and good thermal stability in air. Based on an Ag nanowiring platform, an all-NW transistors array, as well as various optoelectronic applications, are successfully demonstrated.

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confidence: 99%

Versatile Metal Nanowiring Platform for Large‐Scale Nano‐ and Opto‐Electronic Devices

et al. 2016

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“…For sensor applications, fabrication of Ag nanostructure-covered surface structures can be used for surface-enhanced Raman scattering (SERS) application. The SERS intensities of rhodamine 6G (R6G) at LIPSStreated Ag substrates are 15 times greater than those at non-treated Ag substrates [50].…”

Section: Applicationsmentioning

confidence: 97%

Micro- and Nano-Structuring of Materials via Ultrashort Pulsed Laser Ablation

Cheng¹,

Chen²

2017

Laser Ablation - From Fundamentals to Applications

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Laser material processing has been demonstrated as an effective means for machining almost every solid material. The quality of laser machining depends on the processing parameters that dictate material ablation mechanisms. The understanding of the complex physics associated with ultrashort pulsed laser (USPL) material interaction and ablation has advanced significantly owing to a great many theoretical and experimental studies in the past 20 years. To date, USPLs have been considered as a novel tool for micro-and nano-machining of bulk or thin film materials and for internal modification of transparent materials via multi-photon absorption in a tiny focal volume. Moreover, USPL material processing is now gaining interest in other applications, such as in sensors, electronics and medical device industries.

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“…These approaches allow us to fabricate large‐area NSs (few cm 2 to few inches 2 ) with distinct morphologies such as periodic gratings/ripples/groves and three‐dimensional structures in a variety of materials . Especially, laser‐induced periodic surface structures (LIPSS)/ripple‐like surface structures have found potential applications in numerous fields, but only a few studies have demonstrated the utility of LIPSS and/or ripple‐like structures in SERS‐based identification of different probe/hazardous molecules . The periodic/ripple‐like structures could play a vital role in SERS‐based detection because these structures enable the excitation of the surface plasmon polaritons (SPPs).…”

Section: Introductionmentioning

confidence: 99%

“…Barmina et al recently demonstrated superior SERS activity as well as information storage capacity of laser generated Ni NSs after depositing Au on them . Chang et al have recently compared the R6G SERS intensities obtained from ripple‐like structures and untreated Ag substrate . However, there are no reports on the utility of Fe ripple‐like structures obtained using fs LAL for detection of dyes/explosives using the SERS technique.…”

Section: Introductionmentioning

confidence: 99%

Surface‐enhanced Raman scattering studies of gold‐coated ripple‐like nanostructures on iron substrate achieved by femtosecond laser irradiation in water

Byram

Moram

Soma

2019

J Raman Spectroscopy

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During the past several years, numerous efforts have been accomplished on designing efficient surface‐enhanced Raman scattering (SERS) substrates with high sensitivity, good reproducibility, and recyclable nature. However, it still remains a significant challenge to realize all these qualities in a single substrate. We have fabricated ripple‐like nanostructures (NSs) on Iron (Fe) substrate using femtosecond (fs) laser irradiation of Fe target in distilled water. These ripple‐like structures had periodicities in the range of ~90–190 nm, which was confirmed from the analysis of field emission scanning electron microscope (FESEM) data. We subsequently deposited a thin layer of gold on these ripple‐like Fe NSs using thermal evaporation. Later, these coated NSs were effectively utilized as SERS substrates for methylene blue (MB) detection and were found to be sensitive evident from the data obtained at a very low concentration of 500pM. Furthermore, we observed that the SERS signal variations on the substrate were <11.2% indicating the reproducible nature of these substrates. Additionally, we demonstrate that these substrates can be reused (we establish this for three times consecutively) by detecting malachite green (MG) and an explosive molecule (picric acid, PA) followed by the mixture compound (Rhodamine 6G+MB) through employment of simple cleaning procedures. The detected molecular concentrations in terms of masses were found to be 3.2 pg, 36.5 pg, and 23 ng for MB (for a concentration of 500pM), MG (for a concentration of 5nM), and PA (for a concentration of 5μM), respectively. Furthermore, these Fe NSs exhibited superior batch‐to‐batch reproducibility with a relative standard deviation (RSD) value of ~l4%. The proposed method of fabricating ripple structures as SERS platforms are highly feasible, reliable, and have great potential for on‐site detection of several analyte molecules with an easily transportable Raman spectrometer.

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Nanostructured Ag surface fabricated by femtosecond laser for surface-enhanced Raman scattering

Cited by 43 publications

References 32 publications

Versatile Metal Nanowiring Platform for Large‐Scale Nano‐ and Opto‐Electronic Devices

Versatile Metal Nanowiring Platform for Large‐Scale Nano‐ and Opto‐Electronic Devices

Micro- and Nano-Structuring of Materials via Ultrashort Pulsed Laser Ablation

Surface‐enhanced Raman scattering studies of gold‐coated ripple‐like nanostructures on iron substrate achieved by femtosecond laser irradiation in water

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