Perforated SiN membrane resonators for nanomechanical IR spectroscopy

Maksymilian Kurek, Matthias Carnoy, Anja Boisen, Silvan Schmid

Research output: Contribution to conferencePosterResearchpeer-review

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Abstract

Constant progress in micro- and nanofabrication provides a great opportunity in development of micro- and nanomechanical resonatorsthat can be used for sensing purposes. These sensors usually consist of singly-clamped cantilever beams, doubly-clamped bridges ormembranes that exhibit resonant behavior. The principle of operation is based on the monitoring of the resonance frequency shift dueto various external factors such as change of temperature. It has been shown that photothermal infrared (IR) spectroscopy based onnanomechanical silicon nitride (SiN) string resonators (NAM-IR) enables the exceptionally fast chemical analysis of pictograms of analytedirectly from liquid solution in only a few minutes [1]. However in this technique the coupling of the IR laser beam to the nanometerwidestring resonators is difficult and inefficient. Therefore perforated SiN membranes with thickness of 100 nm, lateral dimension of1×1 mm2 and 2 µm perforation grid pitch were used instead of strings which makes the IR beam alignment significantly simpler whilemaintaining similar sampling efficiency and photothermal IR absorption sensitivity.
Original languageEnglish
Publication date2016
Number of pages1
Publication statusPublished - 2016
Event42nd International conference on Micro and Nano Engineering - Vienna, Austria
Duration: 19 Sep 201623 Sep 2016
Conference number: 42

Conference

Conference42nd International conference on Micro and Nano Engineering
Number42
Country/TerritoryAustria
CityVienna
Period19/09/201623/09/2016

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