research

Huang, Nano Lett. 7, 2335 (2007); Philip Ball, Nature 448, 396 (2007)
Watch movies at: http://pubs3.acs.org/acs/journals/supporting_information.page?in_manuscr...  

A cohesive law for carbon nanotube/polymer interfaces based on the van der Waals force (JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS 54 (11): 2436-2452 NOV 2006)

Authors: Jiang, L.Y., Huang, Y., Jiang, H., Ravichandran, G., Gao, H., Hwang, K.C. and Liu, B. 

Our paper on the Mechanical threshold stress (MTS) model for 6061-T6 aluminum has been accepted by JoMMS.  There are several things of interest in the paper:

1) The use of a phonon drag model to predict the sharp increase in flow stress at strain rates above 10,000 /s.  This behavior is seen in a  number of materials and is hard to fit using standard power law plasticity models.  Our model does a good job in this regard.

Hello every body,

As most of you know, fracture mechanics of polymer materials needs a special consideration of the viscoelastic material properties. Especially under thermomechanical loading the role of glass transition temperature T_g is very important. That is why people try to characterize the material with different methods including stress relaxation based on Time-Temperature superposition or DMA test.

Attached is a post-print of one of my journal papers submitted in 2005.  A brief description of my paper is as follows:

http://tinyurl.com/2ud2wn

Long URL: (http://www.scitizen.com/screens/blogPage/viewBlog/
sw_viewBlog.php?idTheme=5&idContribution=907
&PHPSESSID=c9ee7a1c644fb35c57fab30f6e0aafdf)

The above was written for the interested layperson who wants to learn more about science. It provides some context for our manuscript that has recently appeared in Nature.

From Northwestern Engineering:

In a paper published July 26 in the journal Nature, researchers led by Rod Ruoff, John Evans Professor of Nanoengineering in the Robert R. McCormick School of Engineering and Applied Science, report on the development of "graphene oxide paper."

Here are some of my recent papers about mechanics of rubber material. They concern constitutive modelling, fatigue and fracture.

Marckmann G. et Verron E., Comparison of hyperelastic models for rubberlike materials, Rubber Chemistry and Technology, 79(5), 835-858, 2006.
https://www.rubber.org/MngmntWeb/NonSecure/RCTabstract.aspx?id=8214

Hello,

 Recently, I have a problem bothered me alot, anybody please help me out.

 I am using Dimension 3100 AFM. It is a scanned tip SPM. There are two screws to adjust mirrow so that the laser can be reflected to the photodiode. My problem is:

I would like to do lateral force microscopy on biological samples.  The more I look into it, it seems it is very difficult to calibrate AFM tips for lateral force microscopy.  Does anyone have any suggestions about how to calibrate tips and which tips are conducive for lateral AFM?