The invention relates to bimetallic leaf spring devices (600) that areresponsive tochanges in temperature, and methods of constructing and utilizing suchdevices. In oneembodiment, the invention includes a clamping apparatus including a firststrip (610) of a firstmaterial and a second strip (620) of a second material. The second strip (620)may be attachedto the first strip (610) at at least two attachment locations. The secondstrip (620) may bespaced apart from the first strip (610) at at least one section between the atleast two attachmentlocations, and at least one of the first material and the second material mayinclude a thermallyexpansive material.
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