Tag: Mad Science

Contributor Post Created with Sketch. Recommended by Ricochet Members Created with Sketch. Group Writing: Supervillainry

 

Cold, when all is said and done, makes a disappointing superweapon.

I mean, the comic book movies are pretty convincing. The hot superhero shoots a lava jet at the cold supervillain, whose ice ray (not to be confused with a freeze ray) sets out an opposite jet, they meet in the middle and cancel each other out in a brilliant contest of CGI. You get Frozone making walls of ice out of thin air. Or you get the Terminator, freezing in liquid nitrogen and shattering like the hopes of a Hillary voter on election night.

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Contributor Post Created with Sketch. Recommended by Ricochet Members Created with Sketch. How to Build a Computer 30: SEMsational

 

This is a continuation of last time’s discussion on Electron Microscopy. In that one, we covered the question of why you’d want one of these and gave a summary of how you’d work one. Take some electrons, throw it at your sample, and watch what bounces off for information. Sounds so simple when we put it that way, right? This week we’re talking about what happens when you actually buckle down to do it in practice.

Taken from Chem lab, when there weren’t any chem techs around to stop me.

Okay, just looking at the thing isn’t doing me much good. What’s going on there, and why? Start from the top. That bottle on the left? That’s for liquid nitrogen, used in the x-ray detector. (Neat! Why do we want to detect x-rays? That’s a subject for a future column.) The cylinder on top marked “GEMINI” is your column; the electron gun is in the top, and the rest of it contains the magnets for focusing and directing the electron beam. The cube-ish box it’s sitting on is your sample chamber; the front pulls out to reveal the stage where you’d put your puck holding the samples. The dark grey table surface is granite, used to lend stability to the whole apparatus. The cabinet it’s sitting on contains electronics and the vacuum pumps. Now let’s get to how all that works together.

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Contributor Post Created with Sketch. Recommended by Ricochet Members Created with Sketch. How to Build a Computer 3: The Hows of Doping

 

First you gotta find a dealer. Right, not that kind of doping. Today we’re going to discuss how to how you mix your dopant atoms into your silicon wafer so you can make transistors.

How Do I Dope My Wafer?

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