Silicon Vibrating Micro-Wire Resonators for Study of Quantum Turbulence in Superfluid $$^{4}$$He

Midlik, Šimon; Sadílek, Jakub; Xie, Zailai; Huang, Yushan; Schmoranzer, David

doi:10.1007/s10909-022-02675-2

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…The resonators are coated with a thin layer of superfluid helium, which flows around the wire and causes it to vibrate. The authors measured the resonance frequency and damping of the wire, which are affected by the properties of the superfluid helium, such as its density and viscosity [7]. Researchers utilized Si MWs in combination with a ZnO nanofilm to create an energy-efficient, lightweight, and flexible LED array device.…”

Section: Introductionmentioning

confidence: 99%

In-plane synthesis of silicon microwires array for optoelectronic and microelectronic applications; a TCAD study

Jahromi,

Sanaei

2023

Preprint

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Silicon microwires have been used in various applications such as sensors, solar cells, and lithium-ion batteries due to their high surface area-to-volume ratio and good electrical conductivity. One of the interesting challenges in microelectronics and photovoltaics is the creation of interspacing, laterally oriented silicon arrays on SiO2 substrate for semiconductor devices with multi-function. Silicon microwires array is a type of microstructure with unique optical and electrical properties that makes it useful for various applications. The fabrication of such structures is still a serious technological problem and requires searching for new approaches and techniques. In this work, we report a CMOS compatible approach for synthesis of in-plane Si microwires array on SiO2 substrate. The approach is a combination of micro-photolithography, oxidation, and etching techniques that are all compatible with standard CMOS fabrication processes. We found that dray oxidation leads to desirable results, and the process will be successful at 1575 degree Celsius after 120 minutes. The resulted Si microwires array are then processed to be used in the channel of a MOSFET for microelectronic application as a sensor. The excellent performance of the designed MOSFET proves formation of the desired Si microwires array which can be used in the structure of any microelectronic devices and sensors. All simulations were performed using TCAD Silvaco software.

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Section: Introductionmentioning

confidence: 99%

In-plane synthesis of silicon microwires array for optoelectronic and microelectronic applications; a TCAD study

Jahromi,

Sanaei

2023

Preprint

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Acoustic emission in bulk normal and superfluid 3He

Noble

Midlik

Colman

et al. 2023

Applied Physics Letters

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We present measurements of the damping experienced by custom-made quartz tuning forks submerged in 3He covering frequencies from 20 to 600 kHz. Measurements were conducted in the bulk of normal liquid 3He at temperatures from 1.5 K down to 12 mK and in superfluid 3He-B well below the critical temperature. The presented results complement earlier work on tuning fork damping in 3He, removing possible ambiguities associated with acoustic emission within partially enclosed volumes and extend the probed range of frequencies, leading to a clearly established frequency dependence of the acoustic losses. Our results validate existing models of damping and point toward the same mechanism of wave emission of first sound in normal 3He and liquid 4He and zero sound in superfluid 3He. We observe a steep frequency dependence of the damping ≈ f 5.5, which starts to dominate around 100 kHz and restricts the use of tuning forks as efficient sensors in quantum fluids. The acoustic emission model can predict the limiting frequencies for various devices, including micro-electromechanical and nano-electromechanical structures developed for quantum turbulence and single vortex dynamics research.

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Aluminum nanosized beams as probes of superfluid 4He

Noble,

Guthrie,

Jennings

et al. 2024

Applied Physics Letters

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Sub-micrometer size devices are strong candidates for future use as probes of quantum fluids. They can be reproducibly manufactured with resonant frequencies in the range of kilohertz to gigahertz and have low power consumption and dissipation. Here, we present doubly clamped aluminum nanobeams of lengths from 15 μm up to 100 μm operated in vacuum and the hydrodynamic regime of liquid 4He. We observe that in vacuum devices are described well using a simple harmonic motion with a constant Duffing coefficient, and in helium, we quantitatively model their behavior with the conventional hydrodynamic model.

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Silicon Vibrating Micro-Wire Resonators for Study of Quantum Turbulence in Superfluid $$^{4}$$He

Cited by 3 publications

References 16 publications

In-plane synthesis of silicon microwires array for optoelectronic and microelectronic applications; a TCAD study

In-plane synthesis of silicon microwires array for optoelectronic and microelectronic applications; a TCAD study

Acoustic emission in bulk normal and superfluid 3He

Aluminum nanosized beams as probes of superfluid 4He

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