Polyurethane (PU) is a highly elastic and transparent polymer, with a transmissivity of ~92% at 550 nm wavelength (see supplementary materials, Figure S3) and resistant to ultraviolet radiation, is an ideal choice for our soft and compliant substrate with elastic nature withstanding large strains.
By selection of compliant substrate and electrodes, we can control the critical strain ([[epsilon].sub.c]) developed in the system, which regulates the wavelength of the wrinkles generated while maintaining transparency at the same time.
This out-of-plane deformation of graphene enhances the adhesion energy of the stiff film to compliant substrates .
"Despite the likely physical and energetic challenges, the benefits of the ability to move on narrow and compliant substrates
might have large ecological implications for animals," said the authors.
The Formaldehyde-free Coalition insists that there would be a sufficient supply of compliant substrates
to satisfy Californians' demand for cabinets, furniture, store fixtures, etc.
(For simplicity, the tarsus is considered as a passive foothold only, and the tip of the tibia is considered as the leg endpoint throughout this paper.) Four factors further complicate this control task: (1) the number and combinations of legs in stance vary continuously, (2) during curve walking, the legs move at different speeds, (3) on compliant substrates
the movement of a leg may vary unpredictably, and (4) the geometry of the system may vary due to nonrigid suspension of the joints or due to injuries of leg segments.
Minoshima, "Evaluation of incipient plasticity from interfaces between ultra-thin gold films and compliant substrates
," Thin Solid Films, vol.
(IX) Designing compliant substrates
to regulate the motion of polymeric microcapsules.