TY - JOUR

T1 - Nanomass Sensing via Node Shift Tracing in Vibrations of Coupled Nanowires Enhanced by Fano Resonances

AU - Mozharov, Alexey

AU - Berdnikov, Yury

AU - Solomonov, Nikita

AU - Novikova, Kristina

AU - Nadoyan, Irina

AU - Shkoldin, Vitaliy

AU - Golubok, Alexander

AU - Kislov, Denis

AU - Shalin, Alexander

AU - Petrov, Mihail

AU - Mukhin, Ivan

N1 - Publisher Copyright: ©

PY - 2021/11/26

Y1 - 2021/11/26

N2 - We suggest an approach to mass sensing via tracing the shift of the node position as an alternative to current sensing approaches based on the detection of the frequency shift. We demonstrate the compatibility of our approach with fast and versatile in situ resonator fabrication and mass measurements by means of a scanning electron microscope. The proposed sensing mechanism is minimally affected by parasitic deposition during the measurement. Within this approach, we demonstrate the measurement of several femtogram masses for single-segmented amorphous carbon nanowire cantilevers. We use the experimental results to extract material parameters of the cantilever fabricated inside a microscope chamber. We use these material parameters to model the mass-sensing performance of the double-segmented cantilever geometry. Double-segmented cantilevers show Fano resonances originated from the coupling between top and bottom segment resonances. This coupling leads to two- to three-fold responsivity enhancement in comparison to a single-segment cantilever. Our approaches to mass sensing and sensitivity estimation are general and can be extended to other cantilever materials applied for mass and force measurements.

AB - We suggest an approach to mass sensing via tracing the shift of the node position as an alternative to current sensing approaches based on the detection of the frequency shift. We demonstrate the compatibility of our approach with fast and versatile in situ resonator fabrication and mass measurements by means of a scanning electron microscope. The proposed sensing mechanism is minimally affected by parasitic deposition during the measurement. Within this approach, we demonstrate the measurement of several femtogram masses for single-segmented amorphous carbon nanowire cantilevers. We use the experimental results to extract material parameters of the cantilever fabricated inside a microscope chamber. We use these material parameters to model the mass-sensing performance of the double-segmented cantilever geometry. Double-segmented cantilevers show Fano resonances originated from the coupling between top and bottom segment resonances. This coupling leads to two- to three-fold responsivity enhancement in comparison to a single-segment cantilever. Our approaches to mass sensing and sensitivity estimation are general and can be extended to other cantilever materials applied for mass and force measurements.

KW - coupled nanowires

KW - Fano resonance

KW - mass sensing

KW - nanowire vibration

KW - node shift

UR - http://www.scopus.com/inward/record.url?scp=85119135429&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/68be83da-ed21-3b7e-87a3-80a6f3f9b47c/

U2 - 10.1021/acsanm.1c02558

DO - 10.1021/acsanm.1c02558

M3 - Article

AN - SCOPUS:85119135429

VL - 4

SP - 11989

EP - 11996

JO - ACS Applied Nano Materials

JF - ACS Applied Nano Materials

SN - 2574-0970

IS - 11

ER -