Miniaturized corona flow sensor operating in drift mobility increment mode for low flow velocity measurement

Chua, Beelee; Pak, James Jungho

doi:10.1016/j.sna.2015.01.022

Cited by 13 publications

(3 citation statements)

References 41 publications

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“…The ions accelerate in the electric field and collide with neutral air molecules, resulting in momentum transfer represented by volumetric electrohydrodynamic force, which gives rise to bulk air movement commonly called as ion wind. The ion wind has been used in various airflow control applications [1][2][3] , cooling application [4][5][6][7] , propulsion technology [8][9][10] , micro-pump design 11,12 , precipitation filtering 13,14 , and electronic devices [15][16][17] . There are several methods generating electric-field driven ion wind and two principal approaches are reviewed below.…”

Section: Introductionmentioning

confidence: 99%

Dual-pin electrohydrodynamic generator driven by alternating current

Dau

Dinh

Tran

et al. 2018

Experimental Thermal and Fluid Science

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We report a unique alternating current (AC) driven corona based air-flow generator using symmetrically arranged electrodes. Unlike the conventional configuration where one electrode generates charged ions moving towards the reference electrode, this configuration allows both negative and positive charges to simultaneously move away from the device and generate ion wind in parallel with the electrodes. In comparison with the direct current (DC) driven corona generator, the time oscillating AC field allows the device a better stabilization owing to the independence of ion wind strength from the inter-electrode spacing. Our results by both simulation and experiment showed that when the AC frequency exceeds a threshold value of 1100 Hz, the electric field at the electrode tips is determined dominantly by the charge cloud created in the previous half-cycle, resulting in stronger net electric field and thus stronger ion wind. In addition, the electrode separation in the AC driven corona based generator is less critical above the frequency threshold, yielding a more robust design with minimized susceptibility to manufacturing tolerances and impurities on the electrodes. Moreover, lower voltage levels of the AC driven system allow simpler and more economical design in the high voltage circuit of the AC generator.

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Section: Introductionmentioning

confidence: 99%

Dual-pin electrohydrodynamic generator driven by alternating current

Dau

Dinh

Tran

et al. 2018

Experimental Thermal and Fluid Science

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“…They are used to measure wind, wall shear stress, viscosity, monitor gas in gas chromatography, and fluid flow in flow cytometry (Kuo et al, 2012;Nguyen, 1997;Makinwa and Huijsing, 2001;Loefdahl and Gad-el Hak, 1999;Ju et al, 2011;Yu et al, 2008;Kaanta et al, 2009;Chua and Pak, 2015;Nguyen et al, 2014;Cubukcu et al, 2014;Reyes Romero et al, 2013). Flow sensors can be classified either as thermal or non-thermal.…”

Section: Introductionmentioning

confidence: 99%

Hot-film and calorimetric thermal air flow sensors realized with printed board technology

Glatzl

Ćerimović

Steiner

et al. 2016

J. Sens. Sens. Syst.

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Abstract. This paper addresses the development of flow sensors optimized for heating, ventilating, and air conditioning systems. The sensors are based on the printed circuit board technology facilitating robust, flexible (in terms of layout), and cost-effective devices. Two approaches for measuring fluid quantities like flow velocity over the whole cross section are investigated in this context. The first one relies on hot-film transduction and stands out for its simplicity, but also shows some severe limitations, which can be circumvented by the second approach based on calorimetric transduction. Supported by extensive numerical simulations, several sensor embodiments were investigated and fabricated. After experimental characterization, measurement and simulation results were compared, which turned out to be in good agreement.

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“…direct electrical probing, is applied to simultaneous measurement of the pressure and flow through the discharge. The concept of using plasma to measure these entities might not be entirely new, where, e.g., a Penning gauge relies on plasma to measure ultra-high vacuum, and Chua and Pak have demonstrated a flow sensor based on a corona discharge 14 . However, the approach of performing these measurements simultaneously and fully integrated with a miniaturized and highly versatile microplasmasource system is.…”

mentioning

confidence: 99%

Combined pressure and flow sensor integrated in a split-ring resonator microplasma source

Snögren

Berglund

Persson

2016

Applied Physics Letters

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PostprintThis is the accepted version of a paper published in Applied Physics Letters. This paper has been peerreviewed but does not include the final publisher proof-corrections or journal pagination.Citation for the original published paper (version of record):Snögren, P., Berglund, M., Combined pressure and flow sensor integrated in a split-ring resonator microplasma source. Abstract. Monitoring and control of the principal properties of a discharge or plasma is vital in many applications, and sensors for measuring them must be integrated close to the plasma source in order to deliver reliable results. This is particularly important, and challenging, in miniaturized systems, where different compatibility issues sets the closest level of integration. In this paper, a sensor for simultaneous measurement of the pressure and flow through a stripline split-ring resonator microplasma source is presented. The sensor utilize fully integrated electrodes Applied Physics Letters

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Miniaturized corona flow sensor operating in drift mobility increment mode for low flow velocity measurement

Cited by 13 publications

References 41 publications

Dual-pin electrohydrodynamic generator driven by alternating current

Dual-pin electrohydrodynamic generator driven by alternating current

Hot-film and calorimetric thermal air flow sensors realized with printed board technology

Combined pressure and flow sensor integrated in a split-ring resonator microplasma source

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