Is there a way to say in Sheet Music notation a chord with part of it quiet, and part of it loud?

For example, a normal Am. What if it was loud, but the C is quiet?

Or a C♯ chord: C♯ and G♯ quiet, but E♯ loud?

I need it to be a single chord with the same duration at each pitch. The reason I need to do this is because I want the voice and accompaniment to be played by one person. And the bit I want is more effective when the accompaniment varies in volume. The volumes need to be precise.