Rapid identification of electricigens via silver-plated photonic crystal filters

Wang, Delong; Zhao, Xiangwei; Liu, Xing; Mu, Zhongde; Gu, Zhongze

doi:10.1007/s12274-016-1164-0

Cited by 6 publications

(7 citation statements)

References 52 publications

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“…Surface-enhanced Raman scattering was recently proposed for rapid identification of electricigens in small volumes (Wang et al, 2016). The details of the Raman spectrum allow, in principle, to identify strong electricigens from non-electricigens.…”

Section: Other Considerationsmentioning

confidence: 99%

Weak electricigens: A new avenue for bioelectrochemical research

Doyle

Marsili

2018

Bioresource Technology

115

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Section: Other Considerationsmentioning

confidence: 99%

Weak electricigens: A new avenue for bioelectrochemical research

Doyle

Marsili

2018

Bioresource Technology

115

View full text Add to dashboard Cite

“…AuNPs were synthesized following a modified procedure reported by Frens and plasmonic filter was prepared with the method mentioned in previous paper . Then the silver-plated PC substrate was washed with deionized water for three times, dried at room temperature, and cut into pieces (1 × 1 mm).…”

Section: Methodsmentioning

confidence: 99%

“…Photonic crystal (PC), with ordered and periodic dielectric micro/nanostructure, can control the propagation of light through photonic band gaps. , It could not only be utilized as label-free platform for biosensing and bioimaging because it is sensitive to the change of refractive index, but also be used as substrate for SERS in combination with plasmonic materials. ,− Because PC could provide an ordered and rough plasmonic surface, distribution of plasmonic “hot spots” could be effectively controlled, which is in great demand for high reproducible detection . Additionally, the low cost of colloidal PC fabricated by self-assembly of monodispersed colloids, which avoids high cost nanofabrication process in case of 2D PC composed of 2D cavity or pillar array, paves the way for its wide application in POCT.…”

Section: Introductionmentioning

confidence: 99%

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Discrimination of Nosiheptide Sources with Plasmonic Filters

Wang

Wang³

et al. 2017

ACS Appl. Mater. Interfaces

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Bacteria identification plays a vital role in the field of clinical diagnosis, food industry, and environmental monitoring, which is in great demand of point of care detection methods. In this paper, in order to discriminate the source of nosiheptide product, a plasmonic filter was fabricated to filtrate, capture and identify Streptomycete spores with Surface enhanced Raman Scattering (SERS). Since the plasmonic filter was derived from self-assembled photonic crystal coated with silver, the plasmonic "hot spots" on the filter surface was distributed evenly in a fare good density and the SERS enhancement factor was 7.49 × 10. With this filter, a stain- and PCR-free detection was realized with only 5 μL sample solution and 5 min in a manner of "filtration and measure". Comparison to traditional Gram stain method and silver-plated nylon filter membrane, the plasmonic filter showed good sensitivity and efficiency in the discrimination of nosiheptide prepared with chemical and biological methods. It is anticipated that this simple SERS detection method with plasmonic filter has promising potentials in food safety, environmental, or clinical applications.

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“…The ultrahigh sensitivity of SERS is highly dependent on the local field enhancement arising from localized surface plasmon resonance (LSPR) excitation, which extremely enhances Raman signals. , Some plasmonic (metal) nanostructures, such as metal nanoparticles (NPs) − and nanostructured arrays and films, − can be used to excite strong LSPR and therefore are commonly employed as SERS substrates. For example, a dimer of 80 nm Ag spheres was used to achieve a SERS enhancement factor (EF) of 1.7 × 10 8 ; Ag NP-modified inverse opal photonic crystal hydrogel beads were applied to detect hemoglobin at the concentration of 7.75 × 10 –6 M; and layer-by-layer films infiltrated with Ag NPs was utilized to detect dioxin with a concentration down to 10 –8 M .…”

Section: Introductionmentioning

confidence: 99%

Single-Step Fabrication of High-Throughput Surface-Enhanced Raman Scattering Substrates

Zeng

Gao

et al. 2018

ACS Appl. Mater. Interfaces

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The combination of surface-enhanced Raman scattering (SERS) with high-throughput screening (HTS) has significant importance for highly sensitive and massive workload assays. Although fabrication of HTS-SERS substrates can be achieved by several methods, the high cost as well as large-equipment dependence limit their applications. Here, we report a simple method to fabricate HTS-SERS substrates within one-step process. The HTS-SERS substrate is fabricated by simply UV-irradiating a fluoroalkylsilane (FAS)-modified liquid-repellent TiO surface in AgNO solution through a photomask. Owing to the photocatalytic nature of TiO, the UV irradiation simultaneously triggers the degradation of the attached FAS and the generation of liquid-adhesive Ag nanoparticles (NPs) on exposed area. A HTS-SERS substrate could be directly obtained after UV irradiation. The deposited Ag NPs evidently enhance Raman signals, and the significant difference between the wettability of exposed area and masked area enables fast formation of high-throughput liquid droplet arrays through a simple dragging solution process. The fabrication method is applicable to various substrate materials, to introduce additional functionalities. The photocatalytic activity of TiO also allows us to photobleach the residual analyte and Ag NPs after detection to recycle substrate. This single-step method is a highly promising candidate for the fabrication of HTS-SERS substrates.

show abstract

Rapid identification of electricigens via silver-plated photonic crystal filters

Cited by 6 publications

References 52 publications

Weak electricigens: A new avenue for bioelectrochemical research

Weak electricigens: A new avenue for bioelectrochemical research

Discrimination of Nosiheptide Sources with Plasmonic Filters

Single-Step Fabrication of High-Throughput Surface-Enhanced Raman Scattering Substrates

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