Soft-clamped silicon nitride string resonators at millikelvin temperatures

Gisler, Thomas; Helal, Mohamed; Sabonis, Deividas; Grob, Urs; Héritier, Martin; Degen, Christian L.; Ghadimi, Amir H.; Eichler, Alexander

doi:10.48550/arxiv.2112.03730

Cited by 2 publications

(2 citation statements)

References 47 publications

(78 reference statements)

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“…In order to realize zeptonewton force detection, the internal damping and stiffness of nanomechanical sensors must be reduced as much as possible. Many groups are striving to optimize different devices as force sensors, including cantilevers [9][10][11], doubly clamped beams [12][13][14][15][16][17], membranes [18][19][20][21][22], nanowires [23][24][25][26], graphene sheets [27], carbon nanotubes [28,29], and levitated particles [30,31]. The main challenge, in most cases, is to preserve the excellent internal characteristics of a force sensor in close proximity to a sample.…”

Section: Introductionmentioning

confidence: 99%

Force-Detected Magnetic Resonance Imaging of Influenza Viruses in the Overcoupled Sensor Regime

et al. 2022

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Long and thin scanning force cantilevers are sensitive to small forces, but also vulnerable to detrimental noncontact interactions. Here we present an experiment with a cantilever whose spring constant and static deflection are dominated by the interaction between the tip and the surface, a regime that we refer to as "overcoupled." The interactions are an obstacle for ultrasensitive measurements such as nanoscale magnetic resonance imaging (nano-MRI). We discuss several strategies to overcome the challenges presented by overcoupling, and demonstrate proton nano-MRI measurements of individual influenza virus particles.

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Section: Introductionmentioning

confidence: 99%

Force-Detected Magnetic Resonance Imaging of Influenza Viruses in the Overcoupled Sensor Regime

et al. 2022

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show abstract

“…In order to realize zeptonewton force detection, the internal damping and stiffness of nanomechanical sensors must be reduced as much as possible. Many groups are striving to optimize different devices as force sensors, including cantilevers [9][10][11], doubly-clamped beams [12][13][14][15][16][17], membranes [18][19][20][21][22], nanowires [23][24][25][26], graphene sheets [27], carbon nanotubes [28,29], and levitated particles [30,31]. The main challenge, in most cases, is to preserve the excellent internal characteristics of a force sensor in close proximity to a sample.…”

mentioning

confidence: 99%

Force-detected Magnetic Resonance Imaging of Influenza Viruses in the Overcoupled Sensor Regime

Krass¹,

Nils²,

Pachlatko³

et al. 2022

Preprint

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Long and thin scanning force cantilevers are sensitive to small forces, but also vulnerable to detrimental non-contact interactions. Here we present an experiment with a cantilever whose spring constant and static deflection are dominated by the interaction between the tip and the surface, a regime that we refer to as "overcoupled". The interactions are an obstacle for ultrasensitive measurements like nanoscale magnetic resonance imaging (nanoMRI). We discuss several strategies to overcome the challenges presented by the overcoupling, and demonstrate proton nanoMRI measurements of individual influenza virus particles.

show abstract

Soft-clamped silicon nitride string resonators at millikelvin temperatures

Cited by 2 publications

References 47 publications

Force-Detected Magnetic Resonance Imaging of Influenza Viruses in the Overcoupled Sensor Regime

Force-Detected Magnetic Resonance Imaging of Influenza Viruses in the Overcoupled Sensor Regime

Force-detected Magnetic Resonance Imaging of Influenza Viruses in the Overcoupled Sensor Regime

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