In this paper, the snap-through buckling of an initially curved microbeam subject to an electrostatic force, accounting for fringing field effect, is investigated. The general governing equations of the curved microbeam are developed using Euler-Bernoulli beam theory and used to develop a new criterion for the snap-through buckling of that beam. The size effect of the microbeam is accounted for...

Different models for effective polarizability in water and the corresponding dispersion forces between dissolved molecules are explored in bulk water and near interfaces. We demonstrate that the attractive part of the Lennard-Jones parameters, i.e., the van der Waals parameter C6 (UvdW ≈ −C6/ρ), is strongly modified when two carbon dioxide (CO2) molecules are near an amorphous silica-water and ...

Ideal gases are gases in which the particles of the gas only interact through elastic collisions; there are no intermolecular forces between the particles. Real gases can approximate ideal gases at conditions of low pressure and high temperature where the intermolecular forces are negligible. Under those conditions the equation of state for an ideal gas holds: PV=nRT (1) where the pressure (P) ...

Recent advances in molecular force measurements have resulted in the quantification of the nanomechanical properties of single molecular bonds, and elucidated novel relationships between molecular architecture and biomolecular adhesion. The measured forces to rupture single intermolecular bonds revealed novel and unexpected ways that proteins respond to mechanical force. Measurement of the magn...

The nature of the intermolecular forces between water molecules is the same in small hydrogen-bonded clusters as in the bulk. The rotational spectra of the clusters therefore give insight into the intermolecular forces present in liquid water and ice. The water hexamer is the smallest water cluster to support low-energy structures with branched three-dimensional hydrogen-bond networks, rather t...

Introduction: Molecular interactions between glycosaminoglycans (GAGs) affect the behavior of extracellular matrix in health and disease. However, their heterogeneous composition, distribution, and physical-chemical properties complicate their characterization in situ. Here we present a new approach to measuring intermolecular electrostatic repulsive forces between GAGs (and between other matri...

Azobenzene-functionalized crystalline elastomers containing a monomer with reduced aromatic content exhibits enhanced phototropic response.