Annulus twist and diffeomorphic 4-manifolds
  We give a method for obtaining infinitely many framed knots which represent a diffeomorphic 4-manifold. We also study a relationship between the $n$-shake genus and the 4-ball genus of a knot. Furthermore we give a construction of homotopy 4-spheres from a slice knot with unknotting number one. 
Tetsuya Abe, In Dae Jong, Yuka Omae, Masanori Takeuchi
math.GT