text: Using classical density functional theory,
  We study the LC-mediated interaction, don't you worry.
  Picture a cylindrical nanoparticle, yo, on a substrate so fly,
  The surface all structured, a rectangular groove, oh my!
  
  In the absence of the nanoparticle, check it,
  A range of defect structures, in the groove, they sit.
  But when we change the groove's width and depth,
  The LC-mediated interaction, it be reppin' a new rep.
  
  From repulsive to attractive, it goes through a switch,
  The groove and the nanoparticle, they form a tight hitch.
  When the groove's size matches the nanoparticle's game,
  That's when the interaction is at its strongest flame.
  
  For narrow grooves, yo, the nanoparticle be drawn,
  Right towards the center, like a magnet, it's dawn.
  But wider grooves, they got a whole different plan,
  There's a free energy minimum by the sidewalls grand.