  Physical properties of out of equilibrium soft materials depend on time as
well as deformation history. In this work we propose to transform this major
shortcoming into gain by applying controlled deformation field to tailor the
rheological properties. We take advantage of the fact that deformation field of
a certain magnitude can prevent particles in an aging soft glassy material from
occupying energy wells up to a certain depth, thereby populating only the
deeper wells. We employ two soft glassy materials with dissimilar
microstructures and demonstrate that increase in strength of deformation field
while aging leads to narrowing of spectrum of relaxation times. We believe
that, in principle, this philosophy can be universally applied to different
kinds of glassy materials by changing nature and strength of impetus.

Soft Condensed Matter;Mesoscale and Nanoscale Physics;Materials Science