Large-Area Silver-Stibnite Nanoporous Plasmonic Films for Label-Free Biosensing. Sreekanth, K., Dong, W., Ouyang, Q., Sreejith, S., Elkabbash, M., Lim, C., Strangi, G., Yong, K., Simpson, R., & Singh, R. ACS Applied Materials and Interfaces, 10(41):34991-34999, American Chemical Society, 2018. cited By 12
Large-Area Silver-Stibnite Nanoporous Plasmonic Films for Label-Free Biosensing [link]Paper  doi  abstract   bibtex   
The development of various plasmonic nanoporous materials has attracted much interest in different areas of research including bioengineering and biosensing because of their large surface area and versatile porous structure. Here, we introduce a novel technique for fabricating silver-stibnite nanoporous plasmonic films. Unlike conventional techniques that are usually used to fabricate nanoporous plasmonic films, we use a room-temperature growth method that is wet-chemistry free, which enables wafer-scale fabrication of nanoporous films on flexible substrates. We show the existence of propagating surface plasmon polaritons in nanoporous films and demonstrate the extreme bulk refractive index sensitivity of the films using the Goos-Hänchen shift interrogation scheme. In the proof-of-concept biosensing experiments, we functionalize the nanoporous films with biotin-thiol using a modified functionalization technique, to capture streptavidin. The fractal nature of the films increases the overlap between the local field and the immobilized biomolecules. The extreme sensitivity of the Goos-Hänchen shift allows femtomolar concentrations of streptavidin to be detected in real time, which is unprecedented using surface plasmons excited via the Kretschmann configuration. © Copyright 2018 American Chemical Society.
@ARTICLE{Sreekanth201834991,
author={Sreekanth, K.V. and Dong, W. and Ouyang, Q. and Sreejith, S. and Elkabbash, M. and Lim, C.T. and Strangi, G. and Yong, K.-T. and Simpson, R.E. and Singh, R.},
title={Large-Area Silver-Stibnite Nanoporous Plasmonic Films for Label-Free Biosensing},
journal={ACS Applied Materials and Interfaces},
year={2018},
volume={10},
number={41},
pages={34991-34999},
doi={10.1021/acsami.8b14370},
note={cited By 12},
url={https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054532816&doi=10.1021%2facsami.8b14370&partnerID=40&md5=6e472f0b9965feb20fb71864f93c1922},
abstract={The development of various plasmonic nanoporous materials has attracted much interest in different areas of research including bioengineering and biosensing because of their large surface area and versatile porous structure. Here, we introduce a novel technique for fabricating silver-stibnite nanoporous plasmonic films. Unlike conventional techniques that are usually used to fabricate nanoporous plasmonic films, we use a room-temperature growth method that is wet-chemistry free, which enables wafer-scale fabrication of nanoporous films on flexible substrates. We show the existence of propagating surface plasmon polaritons in nanoporous films and demonstrate the extreme bulk refractive index sensitivity of the films using the Goos-Hänchen shift interrogation scheme. In the proof-of-concept biosensing experiments, we functionalize the nanoporous films with biotin-thiol using a modified functionalization technique, to capture streptavidin. The fractal nature of the films increases the overlap between the local field and the immobilized biomolecules. The extreme sensitivity of the Goos-Hänchen shift allows femtomolar concentrations of streptavidin to be detected in real time, which is unprecedented using surface plasmons excited via the Kretschmann configuration. © Copyright 2018 American Chemical Society.},
publisher={American Chemical Society},
issn={19448244},
pubmed_id={30226753},
document_type={Article},
source={Scopus},
}

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