Topic
Magneto
About: Magneto is a research topic. Over the lifetime, 2927 publications have been published within this topic receiving 21470 citations.
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TL;DR: In this paper, the spectral Galerkin method was used to prove the existence and uniqueness of strong solutions for magneto-micropolar fluid motion in the presence of magnetic fields.
Abstract: By using the spectral Galerkin method, we prove the existence and uniqueness of strong solutions for magneto - micropolar fluid motion.
175 citations
TL;DR: In this paper, a magneto-mechano-electric (MME) generator with a colossal power density that can turn on 35 LEDs and drive a wireless sensor network under a weak magnetic field of 5-7 × 10−4 T at a low frequency of 60 Hz.
Abstract: Stray magnetic field considered as harmful noise for the human body can be a ubiquitous energy source. We are surrounded with 50/60 Hz parasitic magnetic noise arising from power delivery infrastructure, but it cannot be readily utilized by traditional electromagnetic harvesters. Here, we introduce a novel magneto-mechano-electric (MME) generator with a colossal power density that can turn on 35 LEDs and drive a wireless sensor network under a weak magnetic field of 5–7 × 10−4 T at a low frequency of 60 Hz. The MME generator is a cantilever structured magnetoelectric (ME) laminate composite in which the 〈011〉 oriented anisotropic single crystal fiber composite (SFC) is bonded to Ni plate and Nd permanent magnet proof mass. The ME laminate composite has a strong ME coupling (αME ∼ 160 V cm−1 Oe−1) even without magnetic bias due to the intrinsic property of Ni. The MME generator is also found to exhibit a colossal output power density of 46 mW cm−3 Oe−2 under a weak magnetic field of 1.6 × 10−4 T at 60 Hz. This MME generator can be a ubiquitous power source for wireless sensor networks, low power electric devices, and wireless charging systems by harvesting tiny amounts of parasitic magnetic energy from our living environment.
161 citations
Patent•
13 Oct 2008
TL;DR: In this article, a magneto-machines system is used for wireless power transfer in the form of an electric power transformer, which is then converted to electric power by moving the magneto mechanical system.
Abstract: Wireless power transfer is received using a magneto mechanical system. Movement of the magneto mechanical system is converted to electric power.
160 citations
TL;DR: In this paper, the application of a composite material as a magneto-electric transducer has been discussed and the results of the measurements on frequency response, transfer characteristics, internal impedance, temperature dependence and noise are discussed.
Abstract: This article deals with the application of a composite material as a magneto-electric transducer. The composite, which has both magneto-strictive and piezo-electric properties was developed at Philips' Research Laboratories. A transducer consisting of a piece of composite appears to be a suitable replacement for e.g. Hall devices, especially in AC applications. It needs only two electrical contacts and has a flat frequency response from a few Hz up to 650 kHz, where mechanical resonance occurs. Several calculations and experiments were carried out on the transducer and its electronic analogon, as well as on the measuring set-up, which had to produce a calibrated magnetic field. The results of the measurements on frequency response, transfer characteristics, internal impedance, temperature dependence and noise are discussed. The construction of a magnetic field probe using the composite is described and finally some other applications are given.
149 citations
132 citations