Vorträge und Posterpräsentationen (mit Tagungsband-Eintrag):
M.-H. Chien, M. Brameshuber, B. Rossboth, G. Schütz, S. Schmid:
"Single-molecule analysis with silicon nitride drums";
Vortrag: 44th International Conference on Micro and Nanoengineering (MNE),
Copenhagen (eingeladen);
24.09.2018
- 27.09.2018; in: "44th International Conference on Micro and Nanoengineering (MNE)",
(2018),
1 S.
Kurzfassung englisch:
Abstract: Absorption microscopy is a powerful technique, enabling the
detection of single non-fluorescent molecules at room temperature. We show
that nanomechanical photothermal sensing surpasses the shot-noise-limited
sensitivity of state-of-the-art optical absorption techniques by more than two
orders of magnitude. Using stress-optimized silicon nitride resonators, we
achieve femtowatt-sensitivities at room temperature. Such a sensitivity results
in unprecedented signal-to-noise ratios for the imaging of single molecules,
presenting a competitive alternative to established imaging tools for singlemolecule
analysis.
Schlagworte:
single-molecule analysis, photothermal sensing, nanomechanical resonators, silicon nitride drums, photothermal imaging
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.