For phononic crystals made from soft elastomers, phononic band gaps may be reversibly manipulated through large elastic deformation of the periodic structure.
Moreover, sample HS 69 could be identified as a polyurethane elastomer with additional bands present at 2936, 1702shoulder, 1188, 1162, 1103, 1065, 1047 and 730 cm-1.
Dielectric elastomer composites exhibit band gaps ranges of frequencies at which elastic waves cannot propagate that are tunable by electrostatically-controlled deformations.
In a statement to The Huffington Post, Fitbit said "numerous factors" may "cause skin irritation," including sensitivity to the device's stainless steel, which contains nickel, "reactions to bacteria that can accumulate in wristbands, or a sensitivity to the material of the band elastomer".
As with any jewelry or watch, numerous factors could cause a skin irritation, such as nickel sensitivity (surgical stainless steel is an alloy containing traces of nickel), reactions to bacteria that can accumulate in wristbands, or a sensitivity to the material of the band elastomer.
In a statement to The Huffington Post, Fitbit said "numerous factors" may "cause skin irritation," including sensitivity to the device's stainless steel, which contains nickel, "reactions to bacteria that can accumulate in wristbands, or a sensitivity to the material of the band elastomer". The company said it would offer refunds or exchanges to those affected.
This work demonstrates how fiber composites made of incompressible dielectric elastomers exhibit complete band gaps frequency ranges in which elastic wave propagation is prohibited, irrespective of its polarization and direction.
band.it is an elastic band made out of an extremely soft elastomer that encircles the lens barrel.
The structure of band-gaps in actuated fiber-reinforced dielectric elastomer composites with square lattice is studied.
They then coached rat muscle cells to grow in parallel bands on the silicone and encased the cells with a stretchy material called elastomer.
