A normally closed MEMS micro reed switch with fill in liquid metal micro hinge structure

Lai, Wei-Sheng; Hong, Chang Sun; Lai, Wen Ching; Chen, Chang; Chang, Chun-Po; Chen, Ching-Hung; Fang, Weileun

doi:10.1109/transducers.2015.7180988

Cited by 2 publications

(2 citation statements)

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“…The micromechanical structures (so-called MEMS connectors) are also of great importance. Volume of their magnetic driving systems does not exceed 2–3 mm 3 [4,5,6,7,8,9,10]. It should be emphasized that the use of micro-machine technology allowed for a significant miniaturization of the various device structures, for example the reed contacts of about 2 × 1.4 × 0.75 mm [11,12].…”

Section: Introductionmentioning

confidence: 99%

“…An interesting product is a miniature switch with a ferromagnetic ball of a diameter of 2–3 mm that serves as the magnetic system as well as the electrical contact [13]. The control of all above-mentioned devices is by means of a DC magnetic field produced by coils (also made by an electron beam technology [6,9,10,14]) and/or by the movable permanent magnets [1,2]. It should be emphasized however, that in the case of the permanent magnets, the increase of the sensitivity with simultaneous miniaturization requires the minimized length of the so-called “differential movement” of the control element (s) [3,15].…”

Section: Introductionmentioning

confidence: 99%

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Control of the Singular Points Location for Miniature Switches with Magnetically Driven Contacts

Wang

Habrych

Miedziński

et al. 2018

Sensors

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This paper presents and discusses usefulness and possibility of control of the singular points location of a driving magnetic field under as structure considerations as well as selection of energizing magnet systems for miniature electromagnetic switches. The sample results of theoretical analysis and experimental testing concern selected reed switches with normally open contacts as well as a developed miniature switch with a metallic ball contact. It must be noted that the switch with the contact performed by means of the metallic tiny ball can be effectively used both as a change-over switch as well as a detector of the energizing magnetic field distribution under designing and assembling of any electromagnetic contact device preferably with an increased degree of integration and miniaturization.

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