Black silicon as a platform for bacterial detection

Hartley, Jennifer S.; Hlaing, Mya Myintzu; Seniutinas, Gediminas; Juodkazis, Saulius; Stoddart, Paul R.

doi:10.1063/1.4934966

Cited by 17 publications

(8 citation statements)

References 17 publications

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“…349 More recently, Hartley et al exploited the needle shape of Au-coated black Si to impale E. coli bacteria and obtained SERS spectra that are not limited to the membrane but extend to internal components. 350 TiO 2 /Metal Hybrids. The combination of plasmonic metal NPs with TiO 2 nanostructures has been explored in many works, borrowing most of the results achieved in research on plasmon-assisted hybrid metal/semiconductor photocatalysts.…”

Section: Dielectrics Decorated With Metals: Synergistic Effectsmentioning

confidence: 99%

“…In general, the most important hallmarks of metal NP/SiNW hybrid substrates are excellent multiplexing capabilities and high reproducibilities (RSD < 8%).Other very interesting variations are represented by plasmonic NPs anchored to Si nanograss arrays: Talian et al reported a high enhancement factor (∼10 7 –10 8 ) for the detection of R6G and common explosives such as 1,3-dinitrobenzene (1,3-NB) and 2,4-dinitrotoluene (2,4-DNT), as well as good sensitivity toward diterpenoic acids (1.5 mM). , Au-decorated black Si arrays have also been extended to the analysis of single algal cell ( Chlorella vulgaris ) . More recently, Hartley et al exploited the needle shape of Au-coated black Si to impale E. coli bacteria and obtained SERS spectra that are not limited to the membrane but extend to internal components …”

Section: Metal/dielectric Hybrid Interfacesmentioning

confidence: 99%

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Enhanced Raman Scattering with Dielectrics

2016

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Dielectrics represent a new frontier for surface-enhanced Raman scattering. They can serve as either a complement or an alternative to conventional, metal-based SERS, offering key advantages in terms of low invasiveness, reproducibility, versatility, and recyclability. In comparison to metals, dielectric systems and, in particular, semiconductors are characterized by a much greater variety of parameters and properties that can be tailored to achieve enhanced Raman scattering or related effects. Light-trapping and subwavelength-focusing capabilities, morphology-dependent resonances, control of band gap and stoichiometry, size-dependent plasmons and excitons, and charge transfer from semiconductors to molecules and vice versa are a few examples of the manifold opportunities associated with the use of semiconductors as SERS-active materials. This review provides a broad analysis of SERS with dielectrics, encompassing different optical phenomena at the basis of the Raman scattering enhancement and introducing future challenges for light harvesting, vibrational spectroscopy, imaging, and sensing.

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Section: Dielectrics Decorated With Metals: Synergistic Effectsmentioning

confidence: 99%

Section: Metal/dielectric Hybrid Interfacesmentioning

confidence: 99%

Enhanced Raman Scattering with Dielectrics

2016

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“…Therefore, it can be used for insertion and SERS identification of bacteria. [46] Li et al designed a structure for the synthesis of Ag NPs on rGO sheets. Owing to the synergistic effect of Ag NPs and rGO, the LOD of E. coli was reduced to 10 5 CFU mL −1 .…”

Section: Enhanced Detection Sensitivitymentioning

confidence: 99%

“…Therefore, it can be used for insertion and SERS identification of bacteria. [ 46 ] Li et al. designed a structure for the synthesis of Ag NPs on rGO sheets.…”

Section: Label‐free Bacterial Detection Using Sersmentioning

confidence: 99%

Bacteria Detection: From Powerful SERS to Its Advanced Compatible Techniques

et al. 2020

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The rapid, highly sensitive, and accurate detection of bacteria is the focus of various fields, especially food safety and public health. Surface-enhanced Raman spectroscopy (SERS), with the advantages of being fast, sensitive, and nondestructive, can be used to directly obtain molecular fingerprint information, as well as for the on-line qualitative analysis of multicomponent samples. It has therefore become an effective technique for bacterial detection. Within this progress report, advances in the detection of bacteria using SERS and other compatible techniques are discussed in order to summarize its development in recent years. First, the enhancement principle and mechanism of SERS technology are briefly overviewed. The second part is devoted to a label-free strategy for the detection of bacterial cells and bacterial metabolites. In this section, important considerations that must be made to improve bacterial SERS signals are discussed. Then, the label-based SERS strategy involves the design strategy of SERS tags, the immunomagnetic separation of SERS tags, and the capture of bacteria from solution and dye-labeled SERS primers. In the third part, several novel SERS compatible technologies and applications in clinical and food safety are introduced. In the final part, the results achieved are summarized and future perspectives are proposed.

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“…The peculiarities of these mechanisms have been widely reported. (12,13) From established results, it appears that EM field enhancement plays a crucial role in increasing sensitivity, as a strong localized EM field enhances both the molecular scattering and the absorption cross sections. Therefore, recent SERS and SEIRA studies have been focused on the control of EM field intensity by well-defined nano-microstructures.…”

Section: Introductionmentioning

confidence: 99%

Plasmonic Sensor: Towards Parts-per-Billion Level Sensitivity

Nishijima¹,

Suda²,

Seniutinas³

et al. 2017

Sensors and Materials

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We have developed a plasmonic gas sensing system using transmissive (metal hole array) and scattering (rough surface of Au film) plasmonic materials in an integrating sphere geometry. The combination of transmissive and reflective plasmonic materials significantly enhances the detection threshold by way of surface-enhanced infrared absorption. Here, we first investigate the individual sensing enhancement contributions for each of the plasmonic materials and reveal the path towards applications in high-sensitivity gas detection.

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Black silicon as a platform for bacterial detection

Cited by 17 publications

References 17 publications

Enhanced Raman Scattering with Dielectrics

Enhanced Raman Scattering with Dielectrics

Bacteria Detection: From Powerful SERS to Its Advanced Compatible Techniques

Plasmonic Sensor: Towards Parts-per-Billion Level Sensitivity

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