Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.11851/4102
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Knoll, Wolfgang | - |
dc.contributor.author | Azzaroni, Omar | - |
dc.contributor.author | Duran, Hatice | - |
dc.contributor.author | Kunze-Liebhaeuser, Julia | - |
dc.contributor.author | Lau, King Hang Aaron | - |
dc.contributor.author | Reimhult, Erik | - |
dc.contributor.author | Yameen, Basit | - |
dc.date.accessioned | 2021-01-27T13:24:31Z | - |
dc.date.available | 2021-01-27T13:24:31Z | - |
dc.date.issued | 2020-05 | |
dc.identifier.citation | Knoll, W., Azzaroni, O., Duran, H., Kunze-Liebhäuser, J., Lau, K. H. A., Reimhult, E., and Yameen, B. (2020). Nanoporous thin films in optical waveguide spectroscopy for chemical analytics. Analytical and bioanalytical chemistry, 412(14), 3299-3315. | en_US |
dc.identifier.issn | 1618-2650 | |
dc.identifier.issn | 1618-2642 | |
dc.identifier.uri | https://hdl.handle.net/20.500.11851/4102 | - |
dc.identifier.uri | https://link.springer.com/article/10.1007%2Fs00216-020-02452-8 | - |
dc.description.abstract | Spectroscopy with planar optical waveguides is still an active field of research for the quantitative analysis of various supramolecular surface architectures and processes, and for applications in integrated optical chip communication, direct chemical sensing, etc. In this contribution, we summarize some recent development in optical waveguide spectroscopy using nanoporous thin films as the planar substrates that can guide the light just as well as bulk thin films. This is because the nanoporosity is at a spacial length-scale that is far below the wavelength of the guided light; hence, it does not lead to an enhanced scattering or additional losses of the optical guided modes. The pores have mainly two effects: they generate an enormous inner surface (up to a factor of 100 higher than the mere geometric dimensions of the planar substrate) and they allow for the exchange of material and charges between the two sides of the solid thin film. We demonstrate this for several different scenarios including anodized aluminum oxide layers for the ultrasensitive determination of the refractive index of fluids, or the label-free detection of small analytes binding from the pore inner volume to receptors immobilized on the pore surface. Using a thin film of Ti metal for the anodization results in a nanotube array offering an even further enhanced inner surface and the possibility to apply electrical potentials via the resulting TiO2 semiconducting waveguide structure. Nanoporous substrates fabricated from SiNx thin films by colloid lithography, or made from SiO2 by e-beam lithography, will be presented as examples where the porosity is used to allow for the passage of ions in the case of tethered lipid bilayer membranes fused on top of the light-guiding layer, or the transport of protons through membranes used in fuel cell applications. The final example that we present concerns the replication of the nanopore structure by polymers in a process that leads to a nanorod array that is equally well suited to guide the light as the mold; however, it opens a totally new field for integrated optics formats for direct chemical and biomedical sensing with an extension to even molecularly imprinted structures. Graphical abstract | en_US |
dc.language.iso | en | en_US |
dc.publisher | Springer | en_US |
dc.relation.ispartof | Analytical and Bioanalytical Chemistry | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | Anodization | en_US |
dc.subject | Colloid lithography | en_US |
dc.subject | e-Beam lithography | en_US |
dc.subject | Nanoporous thin films | en_US |
dc.subject | Optical waveguide spectroscopy | en_US |
dc.subject | Chemical and biosensing | en_US |
dc.subject | Polymer nanorod array | en_US |
dc.title | Nanoporous Thin Films in Optical Waveguide Spectroscopy for Chemical Analytics | en_US |
dc.type | Review | en_US |
dc.department | Faculties, Faculty of Engineering, Department of Material Science and Nanotechnology Engineering | en_US |
dc.department | Fakülteler, Mühendislik Fakültesi, Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü | tr_TR |
dc.identifier.volume | 412 | |
dc.identifier.issue | 14 | |
dc.identifier.startpage | 3299 | |
dc.identifier.endpage | 3315 | |
dc.authorid | 0000-0001-6203-3906 | - |
dc.identifier.wos | WOS:000516956200001 | en_US |
dc.identifier.scopus | 2-s2.0-85080942422 | en_US |
dc.institutionauthor | Duran, Hatice | - |
dc.identifier.pmid | 32107572 | en_US |
dc.identifier.doi | 10.1007/s00216-020-02452-8 | - |
dc.relation.publicationcategory | Diğer | en_US |
dc.identifier.scopusquality | Q1 | - |
item.openairetype | Review | - |
item.languageiso639-1 | en | - |
item.grantfulltext | none | - |
item.fulltext | No Fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.cerifentitytype | Publications | - |
crisitem.author.dept | 02.6. Department of Material Science and Nanotechnology Engineering | - |
Appears in Collections: | Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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