Rotational Elasticity

The Elasticity of Elasticity

In this talk I assert that the usual interpretation of what one means by “elasticity” is much too insular and illustrate my thesis by introducing implicit constitutive theories that can describe the nondissipative response of solids. I show that response which was hitherto untenable within the context of Cauchy or Green Elasticity are not only possible, they can explain phenomena that have thus...

Splay-bend elasticity and rotational viscosity of liquid crystal mixtures of rod-like and bent-core molecules

We report temperature dependent measurements of birefringence (Dn), splay (K11), bend (K33) elastic constants and rotational viscosity (g1) of mixtures of rod-like and bent-core molecules. K11 and Dn remain almost constant for all the mixtures whereas K33 is always lower than K11 and further decreases with increasing concentration of bent-core molecules in the mixtures. Apart from the large jum...

Relativistic Elasticity

Relativistic elasticity on an arbitrary spacetime is formulated as a Lagrangian field theory which is covariant under spacetime diffeomorphisms. This theory is the relativistic version of classical elasticity in the hyperelastic, materially frame-indifferent case and, on Minkowski space, reduces to the latter in the limit c → ∞. The field equations are cast into a first – order symmetric hyperb...

Elasticity Imaging

Basic principles and examples of elasticity imaging aresummarized. The chapter focuses on static ultrasonicmethods, and it discusses the advantages and limitationsof this approach in the context of dynamic methods andalternative imaging modalities from the literature. We re-view the physics of continuum deformations as a way toevaluate various experimental approaches. A ...

Rotational Motion