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Jianliang Xiao's picture

Mechanics of in-surface buckling of one dimensional nanomaterials on elastomeric substrates

In this recently published paper on Nanotechnology, we studied the in-surface buckling mechanics of one dimensional nanomaterials on elastomeric substrates.  Simple analytical solutions are obtained for buckling wavelength and amplitude, which can be easily applied to the in-surface buckling of different nanomaterials, such as nanowires and nanotubes.  It is shown that in-surface buckling of nanomaterials has lower energy than out-of-surface buckling, which explains the experimental observance of

An Urgent Appeal for Your Support of My Job Application at COEP's Mechanical Engineering Department

Dear iMechanicians,

I have applied for the job of "Associate Professor" in the Department of Mechanical Engineering at COEP, Pune, India [^]---the same place from where I did my PhD (Mech.) research.

I most earnestly make an appeal to you to provide me with an informal support for my job application by way of a brief email recommendation. My resume may be found here [^].

Jianliang Xiao's picture

In-surface Buckling of Silicon Nanowires on Elastomeric Substrates

Buckling of thin layers or aligned arrays of stiff materials on elastomeric substrates has many important applications, such as stretchable electronics, precision metrology and flexible optoelectronics.  These systems show one common phenomenon, the stiff thin layers buckle normal to the substrate surface (out-of-surface buckling).  By contrast, we recently reported for the first time that silicon nanowires (SiNWs) on elastomeric substrates buckle only within the substrate surface, i.e. in-surface buckling.

A couple of upcoming international conferences in India

(i) 3rd International Congress on Computational Mechanics and Simulation (ICCMS09) to be held this year at IIT Bombay, on December 1--5, 2009. Abstracts due by July 31, 2009:

http://www.civil.iitb.ac.in/help/114_iccms09/iccms09.html

(ii) 54th Congress of the Indian Society of Theoretical and Applied Mechanics (An International Meet), to be held this year at the Netaji Subhas Institute of Technology, New Delhi, during December 18--21, 2009. Abstracts due by September 30, 2009:

Sigma_rr

Taxonomy upgrade extras: 

A (really) small problem

Here's a quick one.

Refer to the accompanying figure.

Figure to accompany a really small problem

 

It shows a frictionless glass tube lying on a horizontal desktop. The tube is smoothly bent at a couple of places as shown in the figure.

Suppose that a small steel ball (say, one taken from a ball-bearing) enters the tube at the point A, with an initial velocity of v.

Shailendra's picture

Post-doctoral postion in Mechanical Engineering at NUS

I have an opening for a post-doctoral position starting early next year (Jan 2009) in the broad area of multi-scale mechanics of nano-crystalline (nc) materials. The focus will be on microstructure mediated failure processes in nc materials primarily using continuum mechanics based approaches, but informed by materials science.

If you are interested, please send me (shailendra[at]nus[dot]edu[dot]sg) your CV and the names of at least two references.

Thanks,

~Shailendra

Seeking Summer Internship Opportunity

I am a third year undergraduate student of IIT Kharagpur (www.iitkgp.ernet.in). In the coming summer, we are supposed to do summer training in some industry in, or out of India, whereas if we want to do internship in a university it must be a foreign university (internship in Indian universities is not allowed).

Finance and Mechanics

 

Recent events about the financial crisis and generally spread turmoils on Economics and Financial Environments  lead me to these conclusions.

Critical Speed:  informations, a key issue on finance, reached a critical speed. Maybe this is the "first" critical speed of the system. Speed of informations has reached the same order of magnitude of people's judgement (executives and investors more than others) so there's a sort of over-reaction about actual events.

The 2009 ASCE-ASME-SES Joint Conference on Mechanics and Materials, June 24-27, 2009, Blacksburg, VA

ASCE, ASME and SES will hold their Joint Conference on Mechanics and Materials on June 24-27, 2009 in Blacksburg, VA.  The conference will be chaired by Dr. Ishwar K. Puri, Department Head, Engineering Science and Mechanics, Virginia Tech. The conference web site provides details, including an invitation to submit symposium and organized session proposals, key dates, instructions for the submission of abstracts and registration information.

I am looking for a PhD Studentship

Hi, I am a master student in Stuttgart University of Germany
I study Computational Mechanics of Materials and Structures

http://www.msc.commas.uni-stuttgart.de/index.html  

Post-Doc Position is avalaible in Bio-Mimetic Adhesive Interfaces


A Post-Doc Position is avalaible in Bio-Mimetic Adhesive Interfaces (EbioAdI) at the University of Mons-Hanaut, Belgium

Supervisor: Prof. Pascal Damman, PhD
University of Mons-Hainaut
Interfaces & Complex Fluids Lab (InFluX)
European Collaborative Research Project (ESF-Eurocores)
Duration : 1 – 3 years
Deadline: 1 September 20088

In short:

A lack of heroes, a lack of open culture

One of the things that I've thought about often in relation to mechanics is:

Ji Wang's picture

An Introduction Course on Mechanics

 

We are currently offerring an introductory course on mechanics for junior students for all fields and subjects.  It is a so called general knowledge course for students to know more on certain subjects and fields before a decision on choice of a major is made.  Since the Mechanics Department in our University has not been popular for so long, we have decided to evangalize our field with more glorious history of Mechanics: Newton, Bernoulli, Euler, Clausius, Faraday, and Einstein.

Dean Eastbury's picture

10% "early bird" discount off full registration fee for 2nd IC Mechanics of Biomaterials & Tissues - offer closes 26 October!

Elsevier is offering a 10% discount off the full registration fee for the 2nd International Conference on the Mechanics of Biomaterials & Tissues (www.icmobt.elsevier.com). This offer will end on 26 October 2007.

I hope you are able to come to Kaua'i and take part in this exciting and well-received conference.

Dean Eastbury

Publisher, Elsevier 

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