AI Weirdness: the strange side of machine learning

Tag: grad school

Total 24 Posts
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Top: An electron microscope photo of long, straight waveguides (left) interrupted by an accidental scratch during fabrication, that turned the orderly stripes into naturalistic chaos. Each structure is about 0.5 microns high, or less than 1/200 the thickness of a typical human hair. Bottom: A photo on quite
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This is the nanolaser equivalent of being smacked in the face with a slab of corrugated roofing during a tornado.  There’s one step in making microscopic lasers where you have to peel away metal from much of the substrate, leaving behind pillar-shaped lasers surrounded by small metallic patches.  These
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I finished my PhD! (!!!) Thanks so much to all of you for following so far, and giving me a use for the interesting images that wouldn’t necessarily make it to publication.  I’m glad I’m not the only one amused by strange-looking dust. Though I’ve graduated, I’
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On the right: a photonic nanostructure, used in researching new light-based ways to make computers communicate faster. On the left: a single human hair (oops). Fortunately, according to Dr. Felipe Vallini of UCSD (who made and imaged this structure): “A hair hit my device, but he is still fine!”
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Nano Street Fight Electron microscope image submitted by grad student Rajat Sharma of UCSD, who looked unsuccessfully with another grad student for a Brad Pitt-esque central character, before giving up and declaring the fight a total mess.  They were testing the etching conditions for making a series of tiny uniform
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A nano-lollipop?  This is a tiny glass ball on a tiny stick made of polymer, a partially-completed nano-sized chemical sensor made by then-grad-student Matthew Chen.  It’s on its way to becoming a nano-torch, which can detect minute concentrations of chemicals due to its ability to focus light. This whole
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Smiley face lasers!  Now decorating our office door. Left half: Top view showing the light distribution in the lasers - these are whispering gallery modes, where the light bounces around the laser’s perimeter. Right half: Diagram of the lasers (red), their glassy coatings (greenish), and their metal surroundings (blue)
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The long valley, surrounded by jagged mountains, occupied by a picturesque leaning castle….  Actually, this is a closeup of a minuscule scratch in a coating of photoresist.  At this magnification (2096x), it’s clear that the photoresist has a rough, mountainous surface, caused by the high-energy plasma I’d bombarded
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Low-budget geeky grad school magnetic poetry: cut up the fridge magnet ads that they hand out at conferences and job fairs.  If there’s any whitespace, go to work with a Sharpie.  Thanks to some junk mail, I’ve got a pizza-themed set as well!
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