What is polycrystalline water?

Video Description

Episode 2 of my series on water ice! Admittedly this is probably the least interesting because it's some negative results, but it's not very scientific to only discuss successes right? In this video, I use a lens to melt ice from the inside out, exposing it's polycrystalline structure (and explain how it's different from a single crystal). With this partially-melted ice, I can do a bit of materials forensics, and actually figure out how it formed, hopefully so I can improve the process in the future! Next video will be on vapor growth, and I'll say right now that it DOES work to grow centimeters-big faceted single crystals! Subscribe to make sure you see it! CORRECTIONS: [none yet!] Other videos in this series: The Sound of Freezing, Explained! https://youtu.be/Wd_c0A8u3lw The Sound of Freezing (Bonus Footage) https://youtu.be/hpzutKRSukw What is polycrystalline water? https://youtu.be/g7ONBuVtz-w Check out the other social media for updates and ramblings: https://www.facebook.com/AlphaPhoenixChannel/ https://twitter.com/Alpha__Phoenix https://reddit.com/r/tryitagain Interesting articles for the extra-curious: J.M. Adams, W. Lewis, The Production of Large Single Crystals of Ice, Rev. Sci. Instrum. 5 (1934) 400–402. doi:10.1063/1.1751759. T. Shichiri, Faceted ice crystals grown in water without air, J. Cryst. Growth. 187 (1998) 133–137. doi:10.1016/S0022-0248(97)00839-7. P. Bisson, H. Groenzin, I.L. Barnett, M.J. Shultz, High yield, single crystal ice via the Bridgman method, Rev. Sci. Instrum. 87 (2016) 034103. doi:10.1063/1.4944481. A. Cahoon, M. Maruyama, J.S. Wettlaufer, Growth-Melt Asymmetry in Crystals and Twelve-Sided Snowflakes, Phys. Rev. Lett. 96 (2006) 255502. doi:10.1103/PhysRevLett.96.255502. T. Gonda, The Growth of Small Ice Crystals in Gases of High and Low Pressures, C, J. Meteorol. Soc. Japan. Ser. II. 55 (1977) 142–146. doi:10.2151/jmsj1965.55.1_142. Y. Furukawa, S. Kohata, Temperature dependence of the growth form of negative crystal in an ice single crystal and evaporation kinetics for its surfaces, J. Cryst. Growth. 129 (1993) 571–581. doi:10.1016/0022-0248(93)90493-G. N.N. Khusnatdinov, V.F. Petrenko, Fast-growth technique for ice single crystals, J. Cryst. Growth. 163 (1996) 420–425. doi:10.1016/0022-0248(95)00980-9. D. v. d. S. Roos, Rapid Production of Single Crystals of Ice, J. Glaciol. 14 (1975) 325–328. doi:10.3189/s0022143000021808. Example of "single crystal casting" through a corkscrew shaped crucible for turbine blades http://040b.synthasite.com/resources/120b.pdf #Materials #Physics #Crystals Music and images in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 https://en.wikipedia.org/wiki/Bridgman%E2%80%93Stockbarger_method#/media/File:Bridgman-Stockbarger-Technique.svg https://en.wikipedia.org/wiki/Snowflake#/media/File:Snowflake_macro_photography_1.jpg