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Ocean Optics - Insight - founders & distributer

Ocean Optics SERS nano gold substrates




SKU: RAM-SERS-AU-5 Category:


Manufactured using an innovative new technique, our gold SERS substrates let you make fast, repeatable SERS measurements for the identification and quantification of SERS-active analytes. Typical applications for the Ocean Optics SERS include trace level detection of explosives and narcotics and precision screening of food ingredients for controlled additives such as melamine and pesticides. SERS substrates also can be used for authentication and anti-counterfeiting applications using SERS-active taggants. Five slides per pack.

SERS Substrates Options 
Engineering Specifications RAM-SERS-AU RAM-SERS-AG RAM-SERS-SP
Slide dimensions: 25.4 x 76.2 x 1 mm 25.4 x 76.2 x 1 mm 25.4 x 76.2 x 1 mm
SERS active area: 5.5 mm diameter circle 5.5 mm diameter circle 4 x 4 mm square
SERS active chemistry: Gold (Au) Nanoparticles Silver (Ag) Nanoparticles Gold/Silver Film
Slide material: Borosilicate Glass Borosilicate Glass Borosilicate Glass
Raman excitation wavelength: 785 nm 532 nm 638 nm
Storage lifetime: 1.5 months 1 month 6 months
Reusable: No No Yes
Laser power: ≤20 mW ≤20 mW ≤100 mW
Volume of analyte: 15 µL 15 µL 10 µL
Sensitivity: ppm to ppb level sensitivity for wide range of analytes

Ocean Optics SERS substrates are a versatile, general-purpose measurement substrates for many applications. The table below suggests the limit of detection for the QE Pro Raman spectrometer with SERS substrates, using a 785 nm excitation laser with a 1 second integration time. While each analyte will behave differently, these results show how our SERS substrates are a great choice for general-purpose SERS measurements.

Material Why Do I Want to Detect Trace Levels? Modular – QE Pro
BPE BPE can be used as a taggant in fuel as well as in biological samples 1 ppb
TNT The threat of terrorism means the need for quick screening for trace levels of explosives is greater than ever 227 ppm
Melamine Poisonous to humans, especially babies and children at very low levels (<1 ppm) 12 ppm

SERS Analytes Library – Limits of Detection

Analyte Classification Lowest detectable concentration determined
1,2-bis(4-pyridyl)ethylene  (BPE) Taggant / Marker 0.2 ppb
4-mercaptobenzoic acid Taggant / Marker 15 ppb
4-mercaptopyridine Taggant / Marker 0.1 ppm
2-naphthalenethiol Taggant / Marker 0.2 ppm
1,10-phenantroline Taggant / Marker 0.2 ppm
1,2-Bis(4-pyridyl)ethane (BPYE) Taggant / Marker 18 ppm
4,4’-Trimethylenedipyridine (TMDP) Taggant / Marker 20 ppm
1,4-Diethynylbenzene (DEB) Taggant / Marker 13 ppb
Cocaine Illict drug 340 ppm
THC Illict drug (Cannabis) 3000 ppm
2-propranolol Beta blocker 30 ppm
triamterene Diuretic 250 ppm
ipratropium bromide Bronchodilator 4000 ppm
nicotinamide B vitamin 12 ppm
crystal violet Fungicide 4 ppb
malachite green Fungicide 4 ppb
thiram Fungicide, ectoparasiticide, and animal repellent 24 ppm
malathion Organophosphate insecticide 1 ppm
melamine Food adulterant 10 ppm
cyanuric acid Metabolite of food adulterant melamine 1000 ppm
TNT Explosive 10 ppm

Additional information

Weight 1 lbs
Dimensions 9 × 6 × 2 in
SERS Material

AG Silver, AU – Gold, SP Nano Sponge


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