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Toward Attogram Mass Measurements in Solution with Suspended Nanochannel Resonators
Open accessAbstract
Using suspended nanochannel resonators (SNRs), we demonstrate measurements of mass in solution with a resolution of 27 ag in a 1 kHz bandwidth, which represents a 100-fold improvement over existing suspended microchannel resonators and, to our knowledge, is the most precise mass measurement in liquid today. The SNR consists of a cantilever that is 50 microm long, 10 microm wide, and 1.3 microm thick, with an embedded nanochannel that is 2 microm wide and 700 nm tall. The SNR has a resonance frequency near 630 kHz and exhibits a quality factor of approximately 8000 when dry and when filled with water. In addition, we introduce a new method that uses centrifugal force caused by vibration of the cantilever to trap particles at the free end. This approach eliminates the intrinsic position dependent error of the SNR and also improves the mass resolution by increasing the averaging time for each particle.
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Statistics of atomic frequency standards
Allan, D. W. (1966) · Proceedings of the IEEE · doi:10.1109/proc.1966.4634 · Cited by 2,692
Weighing of biomolecules, single cells and single nanoparticles in fluid
Burg, T. P., Godin, M., Knudsen, S. M., Shen, W., Carlson, G., Foster, J. S., Babcock, K., & Manalis, S. R. (2007) · Nature · doi:10.1038/nature05741 · Cited by 1,213
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Zhang, P., Bachman, H., Ozcelik, A., & Huang, T. J. (2020) · Annual Review of Analytical Chemistry · doi:10.1146/annurev-anchem-090919-102205 · Cited by 316
Live-cell mass profiling: an emerging approach in quantitative biophysics
Zangle, T. A., & Teitell, M. A. (2014) · Nature Methods · doi:10.1038/nmeth.3175 · Cited by 260
High-throughput measurement of single-cell growth rates using serial microfluidic mass sensor arrays
Cermak, N., Olcum, S., Delgado, F. F., Wasserman, S. C., Payer, K. R., A Murakami, M., Knudsen, S. M., Kimmerling, R. J., Stevens, M. M., Kikuchi, Y., et al. (2016) · Nature Biotechnology · doi:10.1038/nbt.3666 · Cited by 227
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Metadata
- Authors
- Lee, J., Shen, W., Payer, K., Burg, T. P., & Manalis, S. R.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-06-08
- Volume
- 10
- Issue
- 7
- Pages
- 2537-2542
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W1978597639
- Cited by
- 181
- References
- 2
- FWCI
- 7.83
- Type
- journal article
- Language
- en
- Open access
- green
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