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We present for the first time wirebonded microcoils arranged in a planar phased-array configuration for large field of view (FOV) microscale magnetic resonance imaging (MRI) of 2D samples. The phased array consists of seven microcoils providing a sensitive area of 18.3 mm2. We demonstrate successful high-resolution imaging of a water phantom with 16 × 16 µm2 in-plane resolution and an signal-to-noise...
We developed the first micro energy harvester with optimized wire bonded microcoils. The coils were fabricated with a fully automated process on PCB. The 3D coils enable to effectively use the magnetic field and generate an output power of 0.62 µW at 1 ms−2 within a total harvester volume of 0.46 cm3. With the coil wire thickness of only 25 µm this corresponds to the high load voltage of 10.4 mV....
This paper reports a terahertz metamaterial consisting of 3-D microcoils fabricated with an automatic wire bonder in a fully MEMS-compatible manner. The response of the system to an incident electromagnetic wave was characterized by terahertz time-domain spectroscopy (TDS) and by numerical simulations. Depending on the light polarization relative to the structure, fundamental and higher order electric...
The goal of this paper is to provide a simple and effective optimization approach maximizing the output power of electromagnetic energy harvesters. The optimization is based on an equation enabling direct computation of the electromagnetic coupling. The output power is derived using only physical and geometrical parameters. Therefore, optimization can be applied earlier in the design process and the...
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