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Meta-Materials: Invisibility Cloaks, Superlenses, And Earthquake Protection

Try out my quantum mechanics course (and many others on math and science) on https://brilliant.org/sabine. You can get started for free, and the first 200 will get 20% off the annual premium subscription. Metamaterials are the next technological stage “after” materials. It’s a research area that has progressed incredibly quickly in the past decade, and that includes superlenses, invisibility cloaks, earthquake protection, and also chocolate. Yes, chocolate. What are metamaterials, and what are they good for? That’s what we’ll talk about today. The 2000 PRL from Pendry is here https://journals.aps.org/prl/abstract... Aaron Danner's raytracing paper is here: https://citeseerx.ist.psu.edu/viewdoc... The paper from Lee et al about the first superlens is this: https://link.springer.com/article/10.... The paper about the hyperlens is here: https://www.nature.com/articles/s4159... The infrared invisibility cloak that hides the mouse is here: https://onlinelibrary.wiley.com/doi/e... The video from Hyperstealth Corp is here:    • Hyperstealth Invisibility Cloak 9 Min...   The paper about magnetic metamaterials to improve wireless power transfer is here: https://www.nature.com/articles/srep0... The paper about the acoustic directional reflector is this: https://journals.aps.org/prmaterials/... The paper for hiding from ultrasound underwater is here: https://arxiv.org/abs/1009.3310 The paper about the acoustic invisibility cloak is this: https://www.nature.com/articles/nmat3901 The two papers about earthquake protection are those: https://ieeexplore.ieee.org/document/... https://www.frontiersin.org/articles/... And the paper about meta-chocolate is here: https://pubs.rsc.org/en/content/artic... 00:00 What are Metamaterials? 01:38 Negative Refraction and Superlenses 08:24 Invisibility Shields 11:58 Phononic Crystals 14:00 Earthquake Protection 16:25 Meta-Chocolate 17:12 Sponsor Message #science #technology #metamaterials 💌 Sign up for my weekly science newsletter. It's free! ➜ https://sabinehossenfelder.com/newsle... 👉 Support me on Patreon ➜   / sabine   📖 My new book "Existential Physics" is now on sale ➜ http://existentialphysics.com/ 🔗 Join this channel to get access to perks ➜    / @sabinehossenfelder   Many thanks to Jordi Busqué for helping with this video http://jordibusque.com/