Ultrasensitive inkjet-printed based SERS sensor combining a high-performance gold nanosphere ink and hydrophobic paper

Recent Advances and Applications in Paper-Based Devices for Point-of-Care Testing

“…Paper-based lateral flow immunoassay (LFIA) based on (Fe 3 O 4 /Au-PEI) nanoparticles tested bacteria in urine and milk samples with a good linearity from 1 × 10 1 to 1 × 10 7 cfu/mL in less than 60 min [ 238 ]. A paper-based SERS sensor with AgNPs can detect methyl parathion quickly in the sample of fruit [ 239 ], tartrazine in Children's snacks [ 240 ], crystal violet (CV) and the fungicide thiram in food [ 241 ]. Wu’s team has separated and identified lycopene and β-carotene in food products successfully with paper SERS [ 242 ].…”

“…A paper-based SERS sensor with AgNPs can detect methyl parathion quickly in the sample of fruit [239], tartrazine in Children's snacks [240], crystal violet (CV) and the fungicide thiram in food [241]. Wu's team has separated and identified lycopene and β-carotene in food products successfully with paper SERS [242].…”

Combining printing and nanoparticle assembly: Methodology and application of nanoparticle patterning

“…constructed a paper-based SERS platform using NP ink printing, and a very low analyte concentration of 2 μL could be detected. 123 There was a good linear relationship between the SERS intensity and analyte concentration. Additionally, the sensor has good repeatability and high stability.…”

Bottom-up microwave-assisted seed-mediated synthesis of gold nanoparticles onto nanocellulose to boost stability and high performance for SERS applications

“…The herein produced and optimized SERS platform achieved an EF up to ~10 6 , with 10 -6 M R6G, for both most intense peaks of 1360 and 1508 cm -1 , with an RSD lower than 8%, which confirm the best performance of our approach within the state of the art of AuNPs Raman enhancement. [64][65][66] In terms of cost, the use of a low-cost and commercially available substrate allied with a solution-based production method, with an energy-efficient synthesis method, reduces the final cost of the produced membranes significantly, within the cents range, well below the price of the substrates currently available in the market.…”