Improved fiber-optic interferometer for atomic force microscopy

Rugar, D.; Mamin, H. J.; Guethner, P.

doi:10.1063/1.101987

Cited by 615 publications

(344 citation statements)

References 19 publications

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“…36 The motion of the levers is detected using laser light focused onto a 12-μm-wide paddle near the mass-loaded end and reflected back into an optical fiber interferometer. 37 100 nW of light are incident on the paddle from a temperature-tuned 1550 nm distributed feedback laser diode. At T = 4.2 K and μ 0 H = 0 T, the nanotube-loaded cantilevers have resonant frequencies f 0 = ω 0 /(2π) between 2 and 3 kHz and intrinsic quality factors around Q 0 = 3 × 10 4 .…”

Section: Abstract: Magnetic Nanotubes Cantilever Magnetometry Magnementioning

confidence: 99%

Cantilever Magnetometry of Individual Ni Nanotubes

et al. 2012

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Recent experimental and theoretical work has focused on ferromagnetic nanotubes due to their potential applications as magnetic sensors or as elements in high-density magnetic memory. The possible presence of magnetic vortex statesstates which produce no stray fields makes these structures particularly promising as storage devices. Here we investigate the behavior of the magnetization states in individual Ni nanotubes by sensitive cantilever magnetometry. Magnetometry measurements are carried out in the three major orientations, revealing the presence of different stable magnetic states. The observed behavior is well-described by a model based on the presence of uniform states at high applied magnetic fields and a circumferential onion state at low applied fields.

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Section: Abstract: Magnetic Nanotubes Cantilever Magnetometry Magnementioning

confidence: 99%

Cantilever Magnetometry of Individual Ni Nanotubes

et al. 2012

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“…The schematic diagram can be seen in figure 2. We have designed and built an AFM head capable of detecting the cantilever displacements through an all-fiber Rugar type interferometer [18]. This custom-built interferometer consists of a laser diode pigtail with a 1550 nm wavelength, an inline isolator, a 50X50 fiber coupler and two photodiodes.…”

Section: Instrument Designmentioning

confidence: 99%

Customized silicon cantilevers for Casimir force experiments using focused ion beam milling

Castillo-Garza

Chang

Yan

et al. 2009

J. Phys.: Conf. Ser.

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Generation and monitoring of directed neutrino beams using electron-capturedecay sources C. Abstract. Higher sensitivity cantilevers will lead to exploration of new phenomena in the Casimir effect. We have used focused ion beam milling to reduce the width of a commercial single crystal, rectangular-shaped silicon cantilevers with a massive Cr/Au-coated-hollow sphere attached at their free end. Theoretically these milled and modified cantilevers should have better Casimir force sensitivity than their non-milled counterparts. In this preliminary report however only 1 out of 4 modified cantilevers were found to have a higher force sensitivity. Future studies will be needed to determine the general applicability of focused ion beam milling for force sensitivity improvements in comparison to the complete nanofabrication of cantilevers.

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“…The oscillation of the lever along the y direction is detected using laser light focused onto a 10-μm wide paddle near the mass-loaded end and reflected back into an optical fiber interferometer. 44 One hundred nW of light are incident on the paddle from a temperature-tuned 1550-nm distributed feedback laser diode.…”

Section: Ltmfm Setupmentioning

confidence: 99%

Nanoscale multifunctional sensor formed by a Ni nanotube and a scanning Nb nanoSQUID

et al. 2013

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Nanoscale magnets might form the building blocks of next generation memories. To explore their functionality, magnetic sensing at the nanoscale is key. We present a multifunctional combination of a nanometer-sized superconducting quantum interference device (nanoSQUID) and a Ni nanotube attached to an ultrasoft cantilever as a magnetic tip. By scanning the Nb nanoSQUID with respect to the Ni tube, we map out and analyze their magnetic coupling, demonstrate the imaging of an Abrikosov vortex trapped in the SQUID structure -which is important in ruling out spurious magnetic signals -and reveal the high potential of the nanoSQUID as an ultrasensitive displacement detector. Our results open a new avenue for fundamental studies of nanoscale magnetism and superconductivity.

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Improved fiber-optic interferometer for atomic force microscopy

Cited by 615 publications

References 19 publications

Cantilever Magnetometry of Individual Ni Nanotubes

Cantilever Magnetometry of Individual Ni Nanotubes

Customized silicon cantilevers for Casimir force experiments using focused ion beam milling

Nanoscale multifunctional sensor formed by a Ni nanotube and a scanning Nb nanoSQUID

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