Silicon Nanowires Coated with Silver Nanostructures as Ultrasensitive Interfaces for Surface-Enhanced Raman Spectroscopy

Galopin, Élisabeth; Barbillat, J.; Coffinier, Yannick; Szunerits, Sabine; Patriarche, G.; Boukherroub, Rabah

doi:10.1021/am900087s

Cited by 136 publications

(130 citation statements)

References 34 publications

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“…4. Well-resolved peaks were detected at CV concentration as low as 10 −10 M. Lowering the concentration down to 10 −11 M does not change the spectral feature, but instead reduces the SERS intensity, due to probably the reduction of the regions of highly enhanced local electromagnetic field "SERS hot spots" [9,18]. The lowest detectable "secured" concentration of CV is therefore taken as 10 −10 M. SERS spectra were further collected using four different substrates fabricated under identical conditions to evaluate the reproducibility, Fig.…”

Section: Resultsmentioning

confidence: 95%

“…In the past decade, SERS substrates could be achieved on porous silicon (PSi) layers benefiting from the huge internal surface area and its open porous structures [7]. Various Ag nanostructures were synthesized on PSi via thermal decomposition [8], chemical deposition on SiNWs [9] or by immersion plating [10,11]. The advantages of immersion plating are its ease to conduct and simplicity; self-induced deposition with no need for vacuum technologies or energy supply [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Surface-enhanced Raman scattering (SERS)-active substrates from silver plated-porous silicon for detection of crystal violet

Harraz

Ismail

Bouzid

et al. 2015

Applied Surface Science

115

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Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Surface-enhanced Raman scattering (SERS)-active substrates from silver plated-porous silicon for detection of crystal violet

Harraz

Ismail

Bouzid

et al. 2015

Applied Surface Science

115

View full text Add to dashboard Cite

“…Cheng and coworkers explored SiNWs arrays coated with silver as an efficient SERS substrate, allowing detection of Calcium dipicolinate with a low concentrations of *10-6 M [91]. Boukherroub et al used highly SERS-active (EF: *10 8 ) AgNPs-capped SiNWs for sensitive detection of low-concentration (10-1 4 M) R6G [99]. Fang and coworkers deposited metal ions on the top of SiNWs to fabricate a SERS sensor, which was suitable for detecting *600 molecules [100].…”

Section: Surface-enhanced Raman Scattering-based Biosensorsmentioning

confidence: 99%

Silicon-Based Platform for Biosensing Applications

He¹,

Su²

2014

SpringerBriefs in Molecular Science

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Development of high-performance biosensors vastly facilitates the analysis and detection of various biological species, including nucleic acids, protein, cell, etc. Functional nanomaterials (e.g., silver/gold nanoparticles, carbon nanotubes, graphene, silicon nanowires, etc) serve as new platform for design of nano-biosensors featuring high sensitivity and specificity. Taking advantage of the attractive merits of silicon nanowires (SiNWs) (e.g., unique electronic/optical properties, huge surface-to-volume rations, surface tailorability, fast response and good reproducibility, and compatibility with conventional silicon technology), SiNWs have been widely employed for constructing various kinds of electrochemical and optical biosensors, enabling ultrasensitive, specific, and reproducible detection of DNA and protein. We introduce a number of typical SiNWs-based biosensors (e.g., field-effect transistor (FET), amperometric-, surface-enhanced Raman scattering (SERS), and fluorescence-based biosensors) in this chapter, aiming to summarize the representative progresses of this research field in recent years. These kinds of high-quality silicon-based sensors show potentially great promise for myriad practical applications, such as medical diagnosis, food safety, drug security, environment monitoring, as well as anti-bioterrorism and so forth.Keywords Silicon nanowires Á Biosensor Á Field effect transistor Á Surfaceenhanced Raman scattering (SERS) Á DNA and protein detection Á Sensitivity and specificity Biological/chemical analysis and detection are of essential importance for disease diagnosis, drug discovery, food safety, environmental protection, and anti-bioterrorism, etc. While a large number of bioassay kits have been available on the market, there are ever-growing efforts to develop new detection methods with ultrahigh sensitivity and specificity, to meet the increasing demands of biosensing applications. Parallel to research efforts devoted to such high-end requirements, much recent interest has been directed toward the development of low-cost and portable biosensors, which possess comparable high sensitivity to conventional instruments, but with greatly reduced cost/mass/power requirements. Nanostructures (e.g., nanoparticles [1][2][3][4][5][6][7][8][9], nanotubes [10][11][12][13][14], and nanowires [15][16][17][18], etc) Y.

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“…Some very exciting highlights of nanoplasmonic sensitive interfaces include the plasmonic nanoholes, the surface-enhanced Raman spectroscopy (SERS), the localized surface plasmon resonance, or the localised surface plasmon fluorescence (Galopin et al, 2009a;Tripp, Dluhy & Zhao, 2008). These and others are employed for detection or imaging and will be briefly discusses below.…”

Section: Nanoplasmonic Sensitive Interfacesmentioning

confidence: 99%