MikeDalton June 11, 2021 09:20 AM This is very exciting for engine design and for optical applications. Maybe a precision engine could be built without piston rings. Or maybe a rotary engine could be redesigned with higher compression since the apex seals wouldn't be a weak point any longer. The applications are endless. I can't wait to see what racing teams come up with using this stuff. As well as the weapons and space guys. Kpar June 11, 2021 09:38 AM I wonder what other characteristics this material has? What is its strength, ductility, ablation resistance, etc.?Sounds much like the early lasers- a solution in search of a problem. WB1200 June 11, 2021 10:34 AM Build a bridge out of this stuff- won't need expansion joints. David Cowlishaw June 11, 2021 01:54 PM I am interested in other material properties, such as lubricity. I feel it would make a good material to make an ETSE (EndoThermic Steam Engine), which expands an ambient temperature liquid refrigerant in a piston cylinder to it's "dew point" vacuum collapse (timed to suck the piston back to TDC as a one cycle engine), then squirts out supercooled refrigerant back to the heat exchanger, for mechanical energy extraction. COLD is it's only waste product! Karmudjun June 11, 2021 07:24 PM Too bad this wasn't around when the original SR-71 Blackbird was produced - using Russian sourced titanium. No mention in your excellent write-up of the weight, but having a supersonic spy plane with tanks that don't leak when at sea level normal temperature would be a marvelous upgrade. The JP-7 is extremely slick when raining as recounted in this article: https://www.bbc.com/future/article/20130701-tales-from-the-blackbird-cockpitI never saw an SR-71 in the air - nor a U2 - but if this material - especially if an equal substitute for scandium can be found - may lead to better reliability of fuselages. You will still have the take-off, pressurized cabin stresses, and landing routines but with a reduction in expansion/contraction the skin integrity has to improve! HoppyHopkins June 11, 2021 09:19 PM I sure would love to see how the old SR-71 would do skinned with this material, break her own speed and altitude records I think. It also makes SSTO (single stage to orbit) space planes closer to reality when combined with pulse detonation engines wolf0579 June 12, 2021 08:55 AM I'd like to think that we have or are moving beyond such primitive technology as internal combustion engines... Lowell June 12, 2021 11:23 PM I wonder if platinum could be substituted for scandium. That might solve the problem with platinum fracturing with temperature change in a hydrogen fuel cell. Zola June 13, 2021 06:23 PM How does the picture relate to the article? AngryPenguin June 13, 2021 06:58 PM "catchy name, eh?"ScAlWO has a bit of a ring to it.