Hanqing Jiang's blog

It is with great sadness that we post this entry.  Keh-Chih Hwang passed away in Beijing this afternoon, 6 December 2022. 

Cylindrical Origami: From Foldable Structures to Versatile Robots

Zhuang Zhang, Hanqing Jiang

School of Engineering, Westlake University, China.

1. Introduction

Physical gels are characterized by dynamic cross-linksthat are constantly created and broken, changing its state between solid andliquid under influence of environmental factors.

Congratulations to Prof. Yonggang Huang who has been selected to appear on ISIHighlyCited.com because of his exceptional citation count in the field of Engineering.

http://hcr3.isiknowledge.com/author.cgi?&link1=Browse&link2=Results&id=6498

The cytoskeleton provides the mechanical scaffold and maintains the integrity of cells.  It is usually believed that one type of cytoskeleton biopolymer, microtubules, bear compressive force.  In vitro experiments found that isolated microtubules may form an Euler buckling pattern with a long wavelength for very small compressive force.  This, however, does not agree with in vivo experiments where microtubules buckle with short-wavelength.  In order to understand the structural role of microtubules in vivo, we (Jiaping Zhang and Hanqing Jiang) developed a mechanics model to study microtubule buckling supported by cytoplasm.  We found that the ability for a cell to sustain compressive force does not solely rely on mic

A gel is an aggregate of polymers and solvent molecules.  The polymers crosslink into a three-dimensional network by strong chemical bonds, and enable the gel to retain its shape after a large deformation.  The solvent molecules, however, interact among themselves and with the network by weak physical bonds, and enable the gel to be a conduit of mass transport.  The time-dependent concurrent process of large deformation and mass transport is studied by developing a finite element method. 

Buckling of stiff thin films on compliant substrates has many important applications ranging from stretchable electronics to precision metrology and sensors.  John Hutchinson, Zhiggang Suo, Rui Huang, Xi Chen et al. have developed nice theories for stiff thin film buckling on soft substrate.

Prof. Yonggang Huang of Northwestern University was awarded the Guggenheim Fellowship in 2008. Today, the president of the John Simon Guggenheim Memorial Foundation, Edward Hirsch announced that 190 new fellowships were choosen from more than 2,600 applicants (news ). Yonggang won the competition because of his achievement on atomistic-based continuum theory for nanomaterials. A complete list is here

Nonlinear buckling of thin,
high modulus plates on compliant