A selectively expandable breast implant (100) and method for tissue expansion are provided herein. The implant includes a flexible shell (110), an expandable material (150) inside the flexible shell, and a plurality of closed conducting loops (130) within the expandable material. The closed conducting loops absorb energy from a varying magnetic field external to the implant and generate heat, to heat the surrounding expandable material, and the expandable material expands in size based on the amount of heat generated by the closed conducting loops. The expandable material comprises a plurality of expandable microspheres that expands in response to the heat created by the closed conducting loops. The heat induction mechanism enables the closed conducting loops to generate heat for expansion of the expandable material in the implant. The implant can expand uniformly or in areas designated for selective shaping.
