Monolithic mass sensor fabricated using a conventional technology with attogram resolution in air conditions

J. Verd, A. Uranga, G. Abadal, J. Teva, F. Torres, F. Ṕrez-Murano, J. Fraxedas, J. Esteve, N. Barniol

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55 Citations (Scopus)

Abstract

Monolithic mass sensors for ultrasensitive mass detection in air conditions have been fabricated using a conventional 0.35 μm complementary metal-oxide-semiconductor (CMOS) process. The mass sensors are based on electrostatically excited submicrometer scale cantilevers integrated with CMOS electronics. The devices have been calibrated obtaining an experimental sensitivity of 6× 10-11 g cm2 Hz equivalent to 0.9 agHz for locally deposited mass. Results from time-resolved mass measurements are also presented. An evaluation of the mass resolution have been performed obtaining a value of 2.4× 10-17 g in air conditions, resulting in an improvement of these devices from previous works in terms of sensitivity, resolution, and fabrication process complexity. © 2007 American Institute of Physics.
Original languageEnglish
Article number013501
JournalApplied Physics Letters
Volume91
DOIs
Publication statusPublished - 19 Nov 2007

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