Dresden 2017 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 73: Nanostructures at Surfaces: Metals, Oxides and Semiconductors III
O 73.2: Vortrag
Mittwoch, 22. März 2017, 10:45–11:00, REC/PHY C213
Glancing Angle Deposited Silver Nanostructures for Surface Enhanced Raman Scattering Based Sensors — •Christoph Grüner1, Sachin K. Srivastava2, Atef Shalabney2, Ibrahim Abdulhalim2, Mousa Abu Tier3, and Bernd Rauschenbach1,4 — 1Leibniz Institute of Surface Modification, Permoserstraße 15, 04318 Leipzig, Germany — 2Department of Electro Optic Engineering, Ben Gurion University of the Negev, Beer Sheva-84105, Israel — 3Physics Department, Al-Quds University, Jerusalem, Palestine — 4University Leipzig, Institute of Experimental Physics II, Linnéstr. 5, 04103 Leipzig
Fast and certain determination and quantification of environmental toxics or human blood constituents is of great interest today. Such applications require highly sensitive and specific sensors for biological agents. Self-assembled nanostructure arrays can serve as such sensors. A simple and elegant method to produce these kind of structures is Glancing Angle Deposition (GLAD). This is a physical vapor deposition process, which utilizes the self-shadowing effect that appears at highly oblique particle incidence angles. Thereby, a highly porous films consisting of thin, separated nanostructures is created. The large surface area of these films opens the opportunity to fabricate Surface Enhanced Raman Scattering (SERS) based sensors. This study is focused on growth, surface functionalization and optimization of nanostructured thin silver GLAD films on the examples of highly specific sensors for endocrine disruptors and glycated hemoglobin.