Real-Time Particle Mass Spectrometry Based on Resonant Micro Strings
Open Access
- 27 August 2010
- Vol. 10 (9) , 8092-8100
Abstract
Micro- and nanomechanical resonators are widely being used as mass sensors due to their unprecedented mass sensitivity. We present a simple closed-form expression which allows a fast and quantitative calculation of the position and mass of individual particles placed on a micro or nano string by measuring the resonant frequency shifts ofthe first two bending modes. The method has been tested by detecting the mass spectrum of micro particles placed on a micro string. This method enables real-time mass spectrometry necessary for applications such as personal monitoring devices for the assessment of theexposure dose of airborne nanoparticles.Keywords
This publication has 11 references indexed in Scilit:
- Towards single-molecule nanomechanical mass spectrometryNature Nanotechnology, 2009
- Damping mechanisms of single-clamped and prestressed double-clamped resonant polymer microbeamsJournal of Applied Physics, 2008
- A megahertz nanomechanical resonator with room temperature quality factor over a millionApplied Physics Letters, 2008
- Mass and position determination of attached particles on cantilever based mass sensorsReview of Scientific Instruments, 2007
- Study of the origin of bending induced by bimetallic effect on microcantileverSensors, 2007
- Ultra-sensitive NEMS-based cantilevers for sensing, scanned probe and very high-frequency applicationsNature Nanotechnology, 2007
- Toxic Potential of Materials at the NanolevelScience, 2006
- Single cell detection with micromechanical oscillatorsJournal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena, 2001
- Adsorption-induced surface stress and its effects on resonance frequency of microcantileversJournal of Applied Physics, 1995
- Detection of mercury vapor using resonating microcantileversApplied Physics Letters, 1995