I would like to order 25 micron diameter 99.99% Aluminum wire required to use for making electrical connections. Only several cm are needed, so I would like to purchase a small spool. Delivery ASAP preferable (overnight or two day shipping would be best). This wire will be attached by hand using epoxy and not using a wire bonder.
If they can't help, try asking the tech support guys at the wirebond manufacturers and the tool manufacturers. KS in the US and Shinkawa in Japan used to be the big guys. You can search for ultrasonic bond tools. You can also check with superconducting research centers; several private and public ones. Researchers might loan you materials and/or bonding support. BTW, Al critical temp is reportedly about 1.2°K, pretty tough to get that cold! U/S bond wire has 1% silicon, partly for hardness, you can probably bond pure wire though. Key is breaking up the oxide. Maybe bonding at cold temps and/or in vacuum would work. Also, I doubt epoxy would be good or superconducting at the temps. Al filled epoxy is unreliable electrical conductor due to oxide formation. Will be a bear to handle such fine wires without a bonder! Good luck!
