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Since I am so ignorant, anyone up on what graphene may mean to the audio world? Stronger than steel and more conductive than copper. Seems like it will revolutionize many applications.
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A cursory google scan shows graphene available in 10 mm squares> A quantum jump from a few month ago.
However they are sold on some kind of substrate: gold or quartz.
My guess although very strong, being only an atom or two thick, they still are delicate.
Still amazing the progress on graphene. Even on a substrate they can be used for batteries and such, so the usage is always expanding.
Hmmm.... I wonder if this is the same material that was used for Fly Fishing poles ?
Nah:
carbon fiber is used. Very common these days: arrow shafts, golf clubs, surfboards, race car panels, etc. I buy mine from surf shop suppliers, comes in different weights and weaves, gotta coat it with resin or the CF will deteriorate when wet.
Used CF ribbon to laminate a TT tonearm: added a lot of stiffness.
IIRC Stax came out with a electrostatic "phones" utilizing graphene (IIRC they were earplug type design). If available in large enough sheets it should make a great electrostatic diaphragm.
Since people like B&W and Seas already make diamond tweeter domes, and graphene can rival diamond in stiffness and hardness and temperature tolerance and transfer, it may replace diamond.
The issue is making graphene in large enough sheets to be viable. Haven't looked in a while, but last I checked graphene was only available in relatively small sheets way less than a centimeter square. You can think of it as being a nanotube unrolled. Of course smaller pieces may be laminated with kevlar, nomex or even regular carbon fiber to stiffen speaker cone materials.
The other issue is terminating the graphene. The same issue came up when carbon fiber became available. A.J. Van Denhul used mechanical crimps to terminate his carbon fiber interconnects. The same issue exists today with carbon nanotubes. Exceedingly small diameters and the need for a mechanical crimp calls for expensive retooling and applications of techology (laser ?).
Such obstacles will be overcome, but it will take a bit of time
Thanks Stu, you the man!
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