3 ms·

How do you evacuate these fibers to any decent vacuum? Sticking a vacuum pump on one end and waiting presumably won't work because gas will take a really reall

• avidiax 1y ago
  My uneducated guess, fill the cavity with a reactive gas, then apply heat in one part of the process to react the gas with the walls, leaving a vacuum. Part of the article mentions silver cladding on the inside wall, which would be a getter for some gasses, with the downside that it is slightly tarnished. Or, the entire process is performed under vacuum. More likely, that part of the manufacturing process isn't fully solved, so they just have pumped samples.
• LargoLasskhyfv 1y ago
  You produce them in orbit. Like ZBLAN. Actually hollow cored ZBLANS seems like a nice idea, to a layman like me :)