#PDF #paper on #mechanisms for #MEMS #gyroscopes #toread
on 02026-08-26#paper on a paramecium-sized programmable, autonomous robot that integrates sensors. “We operated within a limited power budget of ~100 nW by building our robot in a 55-nm [CMOS] process and leveraging #subthreshold digital logic. (...) In 210 μm by 340 μm by 50 μm, we were able to fit photovoltaic (PV) cells for power, sensors for temperature, four actuator control circuits, an optical receiver for downlink communication and programming, a processor, and memory.” But only barely: “The processor consumed most of the power, requiring nearly a third of the robot’s area to be devoted to energy harvesting to compensate. Even when using larger, low-leakage transistor-based memory, at this process node, we were limited to storing a few hundred bits.” 23 11-bit instructions, and the program could only be 32 instructions long; it had 16 bytes of RAM, 4 8-bit registers, no memory indexing, and no subroutine call and return functionality. #MEMS #robotics #toread
on 02025-12-18#New-Mind #video on #MEMS #mechanisms. Low information content, mostly just stock footage with an inept voiceover.
on 02025-12-17#Breaking-Taps #video about #MEMS accelerometers. He uses a lot of electron #microscopy to show the #flexures and other #mechanisms, then makes macroscopic replicas with #3D-printing. I don’t understand the whole flexure layout, but I appreciate the effort. He says the “gyros” use the Coriolis force generated from resonant vibration, which changes their resonant frequency. I don’t know. #toread
on 02024-09-05#materials properties database for a #MEMS class at MIT in 02004, with density, Young's modulus, Poisson ratio, thermal and electrical conductivity, dielectric constant, index of refraction, etc., for a variety of materials commonly used in MEMS
on 02023-01-15Development of a MEMS-Based Acoustic Energy Harvester, a doctoral dissertation #paper #energy-harvesting #hardware #electronics #mems #pdf
on 02015-09-29