Biochemical passivation of metal surfaces for sensor application: reactive annealing of polycrystalline gold films in hydrogen sulfide atmosphere
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Biochemical passivation of metal surfaces for sensor application: reactive annealing of polycrystalline gold films in hydrogen sulfide atmosphere
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| Creator |
Snopok, B. A.
Kostyukevych, K.V. Beketov, G.V. Zinio, S.A. Shirshov, Yu.M. Venger, E.F. |
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| Description |
The formation of AuxSy interfacial layer by reactive annealing of gold films in H₂S atmosphere is investigated. This seems to be a technologically favorable technique for the large-scale and low-cost fabrication of nondestructive immobilization support for biological molecules. Formation of phases with different chemical functionality and surface topography as a function of reaction time was studied using Atomic Force Microscopy (AFM), Surface Plasmon Resonance (SPR) measurements and biomolecular interaction analysis (trypsin - Soybean Trypsin Inhibitor (STI) reaction). The results obtained confirm the classical two-step model for the sulfide phase formation during reactive annealing. This includes an intermediate formation of a dispersed phase of sulfur followed by its reconstruction to a close-packed sulfide layer. Adsorption of proteins onto a certain sulfide layer passes with retention of a native state of adsorbed molecules. The proposed strategy for formation of biochemical structures (gold/sulfide/proteins) on the surface of physical transducers opens a new way for design and development of novel artificial smart sensing systems. They not only maintain optimal functioning of bioreceptors but also are responsive to their environment.
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| Date |
2017-06-11T13:31:38Z
2017-06-11T13:31:38Z 2000 |
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| Type |
Article
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| Identifier |
Biochemical passivation of metal surfaces for sensor application: reactive annealing of polycrystalline gold films in hydrogen sulfide atmosphere / B.A. Snopok, K.V. Kostyukevych, G.V. Beketov, S.A. Zinio, Yu.M. Shirshov, E.F. Venger // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2000. — Т. 3, № 1. — С. 59-68. — Бібліогр.: 50 назв. — англ.
1560-8034 PACS 07.60.Hv; 78.30.Jv; 85.60.Me; 87.80.+s ; http://dspace.nbuv.gov.ua/handle/123456789/120238 |
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| Language |
en
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| Relation |
Semiconductor Physics Quantum Electronics & Optoelectronics
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| Publisher |
Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
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