Large-scale parallelization of nanomechanical mass spectrometry with weakly-coupled resonators
Stefano Stassi, Giulia De laurentis, Debadi Chakraborty, Katarzyna Bejtka, Angelica Chiodoni, John E Sader, Carlo Ricciardi
NATURE COMMUNICATIONS | NATURE PUBLISHING GROUP | Published : 2019
Nanomechanical mass spectrometry is a recent technological breakthrough that enables the real-time analysis of single molecules. In contraposition to its extreme mass sensitivity is a limited capture cross-section that can hinder measurements in a practical setting. Here we show that weak-coupling between devices in resonator arrays can be used in nanomechanical mass spectrometry to parallelize the measurement. This coupling gives rise to asymmetric amplitude peaks in the vibrational response of a single nanomechanical resonator of the array, which coincide with the natural frequencies of all other resonators in the same array. A rigorous theoretical model is derived that explains the physic..View full abstract
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Awarded by Australian Research Council Centre of Excellence in Exciton Science
The work was partially supported by Regione Piemonte through European Funds for Regional Development (FOOD DIGITAL MONITORING project) and with the support of the CleanWaterCenter@PoliTo. The authors also acknowledge support from the Australian Research Council Grants scheme, and the Australian Research Council Centre of Excellence in Exciton Science (CE170100026). C. R. expresses his gratitude to Prof. Guillermo Villanueva and Prof. Lamberto Rondoni for the fruitful discussions.