implies a voluntary limiting. it is the #formal variant of だけ implies that something is exclusive to (...)

結果のみが求められて The only thing I request are results.

Not with adjectives

Cannot be used with 形容詞 or 形容動詞.

かわいい~~のみ~~ 元気~~のみ~~

not to be confused with

literally の (verb nominaliser) + に

パソコンは仕事をするのに必要だ。 A PC is necessary for doing work.