Patent ID: 8432661

Claim:
A microstructural body comprising: a substrate; a support portion; one post that fixes the support portion to the substrate; a frame-shaped movable portion provided around an outer periphery of the support portion; and an elastic support portion that elastically connects the movable portion and the support portion, wherein the elastic support portion includes: a frame-shaped connecting portion provided around the outer periphery of the support portion; a first torsion spring; and a second torsion spring, wherein the first torsion spring supports the connecting portion such that the connecting portion undergoes torsional displacement around a first torsion axis relative to the support portion, and the second torsion spring supports the movable portion such that the movable portion undergoes torsional displacement around a second torsion axis relative to the connecting portion, and wherein the movable portion includes a movable electrode, and the movable portion and a fixed electrode on the substrate form a capacitor having variable electrostatic capacitance.