Bionic amphibious robots are receiving attention and significant interest from the civil and
military sectors since they can move on land and swim underwater. When developing a …

Mechanosensation is a universal feature of animals that is essential for behavior, allowing
detection of animals' own body movement and position as well as physical characteristics of …

Fish fins do not contain muscles, yet fish can change their shape with high precision and
speed to produce large and complex hydrodynamic forces—a combination of high morphing …

Fins from ray-finned fishes do not contain muscles, yet fish can change the shape of their
fins with high precision and speed, while producing large hydrodynamic forces without …

Large shape change from localized mechanical actuation is an attractive prospect for
morphing materials and structures, but it is limited by Saint-Venant's principle: In typical …

Morphing materials are typically either very compliant to achieve large shape changes or
very stiff but with small shape changes that require large actuation forces. Interestingly, fish …

Processes that regulate size and patterning along an axis must be highly integrated to
generate robust shapes; relative changes in these processes underlie both congenital …

In this study, the dynamics of the symmetric oscillation and turning characteristics of a
flexible fin underwater robot propelled by two fins were studied. First, a three-dimensional …

The fin-to-limb transition was marked by the origin of digits and the loss of dermal fin rays.
Paleontological research into this transformation has focused on the evolution of the …

Inspired by the composition of “hard” fin rays and “soft” collagen and the non-segmented
and segmented composite structure of fish fins, we propose a partially segmented laminated …