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Medientyp:
E-Artikel
Titel:
Spectroscopy of mechanical dissipation in micro-mechanical membranes
Beteiligte:
Jöckel, Andreas;
Rakher, Matthew T.;
Korppi, Maria;
Camerer, Stephan;
Hunger, David;
Mader, Matthias;
Treutlein, Philipp
Erschienen:
AIP Publishing, 2011
Erschienen in:Applied Physics Letters
Sprache:
Englisch
DOI:
10.1063/1.3646914
ISSN:
0003-6951;
1077-3118
Entstehung:
Anmerkungen:
Beschreibung:
<jats:p>We measure the frequency dependence of the mechanical quality factor (Q) of SiN membrane oscillators and observe a resonant variation of Q by more than two orders of magnitude. The frequency of the fundamental mechanical mode is tuned reversibly by up to 40% through local heating with a laser. Several distinct resonances in Q are observed that can be explained by coupling to membrane frame modes. Away from the resonances, the background Q is independent of frequency and temperature in the measured range.</jats:p>