ArticleAdvanced science (Weinheim, Baden-Wurttemberg, Germany)2020
Label-Free Near-Infrared Plasmonic Sensing Technique for DNA Detection at Ultralow Concentrations.
Article in Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 48 citations in OpenAlex.
- Sensitivity Enhancement of Polymer Optical Fiber Surface Plasmon Resonance Sensor Utilizing ITO Overlayer.Sensors (Basel, Switzerland) · 2025Article
- Plasmonic Biosensors with Nanostructure for Healthcare Monitoring and Diseases Diagnosis.Sensors (Basel, Switzerland) · 2022Review
- Article
- A Fiber-Optic Surface Plasmon Resonance Sensor for Bio-Detection in Visible to Near-Infrared Images.Biosensors · 2021Article
- Differential Refractive Index Sensor Based on Coupled Plasmon Waveguide Resonance in the C-Band.Sensors (Basel, Switzerland) · 2021Article
- Near-infrared tunable surface plasmon resonance sensors based on graphene plasmonsRSC advances · 2021Article
- Label-Free Near-Infrared Plasmonic Sensing Technique for DNA Detection at Ultralow Concentrations.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2020Article
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Authors and funding
9 authors at 1 institution in 1 country.
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Abstract
Biomolecular detection at a low concentration is usually the most important criterion for biological measurement and early stage disease diagnosis. In this paper, a highly sensitive nanoplasmonic biosensing approach is demonstrated by achieving near-infrared plasmonic excitation on a continuous gold-coated nanotriangular array. Near-infrared incident light at a small incident angle excites surface plasmon resonance with much higher spectral sensitivity compared with traditional configuration, due to its greater interactive volume and the stronger electric field intensity. By introducing sharp nanotriangular metallic tips, intense localization of plasmonic near-fields is realized to enhance the molecular perception ability on sensing surface. This approach with an enhanced sensitivity (42103.8 nm per RIU) and a high figure of merit (367.812) achieves a direct assay of ssDNA at nanomolar level, which is a further step in label-free ultrasensitive sensing technique. Considerable improvement is recorded in the detection limit of ssDNA as 1.2 × 10
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