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Open AccessJournal ArticleDOI

Mass and stiffness spectrometry of nanoparticles and whole intact bacteria by multimode nanomechanical resonators.

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TLDR
By using nanomechanical resonators, heavier analytes can be identified by their mass and stiffness by demonstrating the enormous potential of this technology for identification of large biological complexes near their native conformation.
Abstract
Mass spectrometry can accurately identify species by molecular mass, but measuring large species can be difficult. Here the authors show that nanomechanical resonators can identify both the mass and stiffness of larger analytes, demonstrating it for gold nanoparticles and E. Coli bacteria.

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Citations
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Journal ArticleDOI

The emerging landscape of single-molecule protein sequencing technologies

TL;DR: In this paper, the authors describe new single-molecule protein sequencing and identification technologies alongside innovations in mass spectrometry that will eventually enable broad sequence coverage in single-cell profiling.
Journal ArticleDOI

Neutral mass spectrometry of virus capsids above 100 megadaltons with nanomechanical resonators

TL;DR: This system determined the mass distribution of ~30-megadalton polystyrene nanoparticles with high detection efficiency and effectively performed molecular mass measurements of empty or DNA-filled bacteriophage T5 capsids with masses up to 105 megadaltons using less than 1 picomole of sample and with an instrument resolution above 100.
Journal ArticleDOI

Optomechanical detection of vibration modes of a single bacterium.

TL;DR: This work harnessed a particular regime in the physics of coupled mechanical resonators to directly measure these low-frequency mechanical resonances of a single bacterium, demonstrating that ultrahigh frequency optomechanical resonators can be used for vibrational spectrometry with the unique capability to obtain information on single biological entities.
Journal ArticleDOI

Single-particle mass spectrometry with arrays of frequency-addressed nanomechanical resonators

TL;DR: The demonstration of mass spectrometry with arrays of 20 multiplexed nanomechanical resonators; each resonator is designed with a distinct resonance frequency which becomes its individual address, which significantly decreases detection time.
Journal ArticleDOI

Optomechanical mass spectrometry.

TL;DR: Single-particle mass spectrometry using integrated optomechanical resonators, impervious to particle position, stiffness or shape is demonstrated, showing a three-fold improvement in capture area with no resolution degradation, despite the use of a single resonance mode.
References
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Journal ArticleDOI

Mass spectrometry-based proteomics

TL;DR: The ability of mass spectrometry to identify and, increasingly, to precisely quantify thousands of proteins from complex samples can be expected to impact broadly on biology and medicine.
Journal ArticleDOI

Frequency response of cantilever beams immersed in viscous fluids with applications to the atomic force microscope

TL;DR: In this article, a detailed theoretical analysis of the frequency response of a cantilever beam that is immersed in a viscous fluid and excited by an arbitrary driving force is presented.
Journal ArticleDOI

Zeptogram-Scale Nanomechanical Mass Sensing

TL;DR: Analysis of the ultimate sensitivity of very high frequency nanoelectromechanical systems indicates that NEMS can ultimately provide inertial mass sensing of individual intact, electrically neutral macromolecules with single-Dalton (1 amu) resolution.
Journal ArticleDOI

A nanomechanical mass sensor with yoctogram resolution

TL;DR: This unprecedented level of sensitivity allows us to detect adsorption events of naphthalene molecules, and to measure the binding energy of a xenon atom on the nanotube surface, which could have applications in mass spectrometry, magnetometry and surface science.
Posted Content

Nanoelectromechanical Systems

TL;DR: Nanoelectromechanical systems as discussed by the authors are MEMS scaled to submicron dimensions, which can attain extremely high fundamental frequencies while simultaneously preserving very high mechanical responsivity (small force constants).
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