Mechanics of freely-suspended ultrathin layered materials

Geometry and mechanics of layered structures and materials.

Glass transitions of freely suspended polymer films

We present a modified version of our " sliding model " , where chain arcs, between two contacts at the surface, may move if all the barriers along the arc are weaker than a certain threshold. An important advance of the revised model is that the high limiting chain lengths N * observed in the experiments (N * ∼ 10 4) are naturally accounted for. In this model, a film of thickness h < 2R 0 (wher...

Evaporation of freely suspended single droplets

Evaporation is ubiquitous in nature. This process influences the climate, the formation of clouds, transpiration in plants, the survival of arctic organisms, the efficiency of car engines, the structure of dried materials and many other phenomena. Recent experiments discovered two novel mechanisms accompanying evaporation: temperature discontinuity at the liquid–vapour interface during evaporat...

Lateral Vibrations of Single-Layered Graphene Sheets Using Doublet Mechanics

This paper investigates the lateral vibration of single-layered graphene sheets based on a new theory called doublet mechanics with a length scale parameter. After a brief reviewing of doublet mechanics fundamentals, a sixth order partial differential equation that governs the lateral vibration of single-layered graphene sheets is derived. Using doublet mechanics, the relation between natural f...

Freely suspended two - dimensional electron gases

We present a new technique allowing us to build freely suspended two-dimensional electron gases from AlGaAs/GaAs/AlAs heterostructures. This technique relies on an MBE-grown structures that includes a sacrificial layer. ( 1998 Elsevier Science B.V. All rights reserved.