original_query: What is the distinguishing feature of FinFET transistors?
query: What is the distinguishing feature of FinFET transistors?
answer: The distinguishing feature of FinFET transistors is the presence of a thin silicon "fin" inversion channel on top of the substrate, allowing the gate to make two points of contact: the left and right sides of the fin. This wrap-around gate structure provides better electrical control over the channel, reducing leakage current and overcoming short-channel effects.