Sökning: onr:"swepub:oai:DiVA.org:liu-166465" >
Application of ZnO ...
Application of ZnO Nanorods Based Whispering Gallery Mode Resonator in Optical Immunosensors
-
- Tereshchenko, Alla (författare)
- Vilnius Univ, Lithuania
-
- Yazdi, Gholamreza (författare)
- Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
-
- Konup, Igor (författare)
- Odessa Natl II Mechnikov Univ, Ukraine
-
visa fler...
-
- Smyntyna, Valentyn (författare)
- Odesa Natl II Mechnikov Univ, Ukraine
-
- Khranovskyy, Volodymyr (författare)
- Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
-
- Yakimova, Rositsa (författare)
- Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
-
- Ramanavicius, Arunas (författare)
- Vilnius Univ, Lithuania
-
visa färre...
-
(creator_code:org_t)
- ELSEVIER, 2020
- 2020
- Engelska.
-
Ingår i: Colloids and Surfaces B. - : ELSEVIER. - 0927-7765 .- 1873-4367. ; 191
- Relaterad länk:
-
https://liu.diva-por... (primary) (Raw object)
-
visa fler...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- In this research a whispering gallery mode (WGM) resonator based on vertically oriented ZnO nanorods, which were formed on silicon surface (silicon/ZnO-NRs), has been applied in the design of optical immunosensor that was dedicated for the determination of grapevine virus A-type (GVA) proteins. Vertically oriented ZnO-NRs were grown on silicon substrates by atmospheric pressure metal organic chemical vapor deposition (APMOCVD) and the silicon/ZnO-NRs structures formed were characterized by structural and optical methods. Optical characterization demonstrates that silicon/ZnO-NRs-based structures can act as whispering gallery mode (WGM) resonator where quasi-whispering gallery modes (quasi-WGMs) are generated. These quasi-WGMs were experimentally observed in the visible and infrared ranges of the photoluminescence spectra. In order to design an immuno-sensing system the anti-GVA antibodies were immobilized on the surface of silicon/ZnO-NRs and in this way silicon/ZnO-NRs/anti-GVA structure was formed. The immobilization of anti-GVA antibodies and then the interaction of silicon/ZnO-NRs/anti-GVA structure with GVA proteins (GVA-antigens) resulted in an opposite shifts of the WGMs peaks in the visible range of the photoluminescence spectra observed as a defect-related photoluminescence emission of ZnO-NRs. Here designed silicon/ZnO-NRs/anti-GVA immuno-sensing structure demonstrates the sensitivity towards GVA-antigens in the concentration range of 1-200 ng/ml. Bioanalytical applicability of the silicon/ZnO-NRs-based structures in the WGMs registration mode is discussed.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
Nyckelord
- ZnO nanorods (ZnO NRs); Whispering gallery modes (WGMs); Whispering gallery mode resonators; Quasi-whispering gallery modes (quasi-WGMs); Photoluminescence; Biosensors; Optical immunosensor; Optical resonators; Grapevine virus A-type (GVA) antigen/antibody-complex
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas