72. Spiderweb Inspired & Graphene Enhanced Microchips

The Next Byte Podcast · 31 May 2022 · 29m

AI in practice: 2 real uses of AI described

What this episode covers

Hosts Daniel and Farbod discuss two breakthroughs in microchip technology: a graphene-hexagonal boron nitride (HBN) heterostructure developed by the University of Michigan and Ohio State University, and spiderweb-inspired vibrational microchips created by students at Delft University of Technology. They explain how the graphene-HBN stack enables deep UV LEDs and potentially quantum computing by overcoming silicon's thermal and physical limits, while the spiderweb geometry allows precision sensors to operate at room temperature by isolating thermal noise. The episode highlights the role of molecular beam epitaxy in material synthesis and Bayesian optimization in designing bio-inspired mechanical structures.

AI in practice

Where this conversation describes AI being used to build or deliver a product. Part of the AI in practice tracker.

Engineering & simulationBayesian optimization modelQuality factor over one billion; vibration persisted for about an hour

A machine learning model guided by Bayesian optimization generated a spiderweb-inspired geometry for a microchip that confined internal vibrations, which was then confirmed by simulation.

“So they have a model, the design machine learning model that's guided by optimization, and they fed this Besian optimization model. Hey, this is the parameters that we care about. We want to do the spider web thing. And after a couple iterations, It gave them a design idea.”

Speaker 2 · Hear it at 21:18

Engineering & simulationQuality factor over one billion; oscillation lasted about an hour

Researchers used a machine learning model to optimize the geometry of a vibrating microchip, resulting in a design that isolated vibrations and achieved a quality factor of over one billion, allowing oscillation for an hour at room temperature.

“So the model gave them this design that was kind of like a 6 string design. And what was interesting about it is that it seemed to confine the internal vibrations into like a loop within the string itself. So you have this, uh, stress strain and torsional, um, force distribution through the web that kept the entire vibration local.”

Speaker 2 · Hear it at 21:18

Mentioned

Companies
Mouser Electronics, Wevolver
Tools
Molecular Beam Epitaxy
Materials
Graphene, Hexagonal Boron Nitride
Also
University of Michigan, Ohio State University, Delft University of Technology

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