Question is really can you pay or receive a fraction of a satoshi?
why would you want to pay/recieve a fraction of a satoshi o_0
under current blockchain protocol it is impossible to send or recieve fractions of satoshi,but you can,theoretically ,do it off-chain
have never heard of any system that would do that,even if (when?) bitcoin costs 100.000$ ,1 satoshi would equal 0.001 $ or 1/10 of a cent