Full Idea
Searle's defence of causally efficacious supervenient mind won't work, because, unlike the mind, the solidity of a piston is not a distinct and separate phenomenon from its microstructure.
Gist of Idea
Solidity in a piston is integral to its structure, not supervenient
Source
comment on John Searle (The Rediscovery of the Mind [1992], Ch. 5.V) by Keith T. Maslin - Introduction to the Philosophy of Mind 7.6
Book Reference
Maslin,Keith: 'An Introduction to the Philosophy of Mind' [Polity 2001], p.204
A Reaction
Searle struggles to find analogies for his position - and that, in my view, is highly significant in the philosophy of mind. If there is nothing else like your proposed theory, it is probably just human vainglory.