Publications by authors named "Brahim El Mansouri"

This work demonstrates the first on-chip UV optoelectronic integration in 4H-SiC CMOS, which includes an image sensor with 64 active pixels and a total of 1263 transistors on a 100 mm chip. The reported image sensor offers serial digital, analog, and 2-bit ADC outputs and operates at 0.39 Hz with a maximum power consumption of 60 μW, which are significant improvements over previous reports.

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Commercially available gravimeters and seismometers can be used for measuring Earth's acceleration at resolution levels in the order of (where g represents earth's gravity) but they are typically high-cost and bulky. In this work the design of a bulk micromachined MEMS device exploiting non-linear buckling behaviour is described, aiming for resolution by maximising mechanical and capacitive sensitivity. High mechanical sensitivity is obtained through low structural stiffness.

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Article Synopsis
  • * The presented study involves the design and fabrication of a low-power MEMS microhotplate with aluminum IDEs, which is characterized to detect methanol vapor using a Zeolitic imidazolate framework (ZIF-8) coating.
  • * Results show that the sensor, operational at temperatures between 20°C and 50°C, can effectively detect methanol concentrations from 500 ppm to 7000 ppm, with improved response and recovery times at higher temperatures.
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The in situ electrochemical growth of Cu benzene-1,3,5-tricarboxylate (CuBTC) metal-organic frameworks, as an affinity layer, directly on custom-fabricated Cu interdigitated electrodes (IDEs) is described, acting as a transducer. Crystalline 5-7 µm thick CuBTC layers are grown on IDEs consisting of 100 electrodes with a width and a gap of both 50 µm and a height of 6-8 µm. These capacitive sensors are exposed to methanol and water vapor at 30 °C.

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