Nigel Stanford made Cymatics: Science Vs. Music, the 2014 video that put Chladni plates, ferrofluid and a Ruben's tube in front of tens of millions of people. If you want to follow him now, Instagram is the only address that works: @nigelstanford showed 16,000 followers and 169 posts, with the bio "I dig robots. I make beats."
The alternatives are decoys. The X handle @nigelstanford has 41 followers and 141 posts since 2011; the TikTok account of the same name has 33 followers and no likes. Neither is a working channel.
We could not read his individual posts, so we make no claim about how often cymatics appears there now — the bio suggests robotics and music are the current interests. Follow it as the artist's own channel, not as a cymatics feed.