Zhaohe Dai's blog

Dear iMechanicians,

I want to share our recent work published in Nano Letters on the blister test of nanoflakes. The title, abstract, and links for data are as follows:

Pull-to-Peel of Two-Dimensional Materials for the Simultaneous Determination of Elasticity and Adhesion

Zheng Fang, Zhaohe Dai*, Bingjie Wang, Zhongzheng Tian, Chuanli Yu, Qing Chen, and Xianlong Wei*

Dear iMechanicians,

I want to share our recent work published in IJSS on the mechanics of spontaneously formed 2D crystal bubbles.

Two-dimensional crystals on adhesive substrates subjected to uniform transverse pressure

Zhaohe Dai, Yifan Rao, and Nanshu Lu

Dear iMechanicians,

I would like to share our recent work published in Phys. Rev. Fluids on the statics and dynamics of droplets on lubricated surfaces:

Droplets on lubricated surfaces: The slow dynamics of skirt formation

Zhaohe Dai and Dominic Vella

Dear iMechanicians, I would like to share our recent work on a drop confined by two adhesive graphene sheets (as illustrated below).

Dear iMechanicians, I would like to share our recent work on the poking and bulging of elastic thin sheets that were inspired by the classical indentation test and bulge test. Under clamped boundaries, there have been well-established theories and well-controlled experiments in this field.

Dear colleagues,I'd like to share our recent work on blister testing ofmultilayer2D materials that gives a direct measurement of Young's modulus and bending rigidity of a multilayer (~10-70 layers). Materials involved include graphene, MoS2, and hBN.

In this progress report, we reviewed recent advances in strategies for applying mechanical strain into 2D materials and recent state‐of‐the‐art characterizations of interface mechanics for 2D material–substrate systems.

In this paper, we experimentally characterize a simple and unified power law for the profiles of a variety of nanobubbles and nanotents formed by 2D materials such as graphene and MoS2 layers.https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.266101

ABSTRACT

Mechanics of Spontaneously Formed Nanoblisters Trapped by Transferred 2D Crystals.Proceedings of the National Academy of Sciences2018

Phys. Rev. Lett. 119, 036101 – Published 17 July 2017

Physics Focus: Graphene Sliding on Graphene