Blog posts
Rolling Moment Resistance of Particles on Surfaces
In the brief presentation attached, I am summarizing my lab's recent work in the field of adhesion and work-of-adhesion measurements, and hoping to see who else is working in the field. Here is some intro to the topic (by no means, it is complete - maybe we can add some recent work to this list as discussions develop)
Split singularities and dislocation injection in strained silicon
By Martijn Feron, Zhen Zhang and Zhigang Suo
The mobility of charge carriers in silicon can be significantly increased when silicon is subject to a field of strain.In a microelectronic device, however, the strain field may be intensified at a sharp feature, such as an edge or a corner, injecting dislocations into silicon and ultimately failing the device. The strain field at an edge is singular, and is often a linear superposition of two modes of different exponents. We characterize the relative contribution of the two modes by a mode angle, and determine the critical slip systems as the amplitude of the load increases. We calculate the critical residual stress in a thin-film stripe bonded on a silicon substrate.
To the students of ES 242r / ENGM 940
Thank you very much for taking this course. Some of the assignments of
the course will be done on iMechanica. The main purposes of these assignments are
- to expose students to resources for life-long learning, and
- to facilitate interactions among students who are taking the course from three campuses (Harvard, MIT and Nebraska).
Please take the following quick steps now.
IINTERMEDIATE MECHANICS OF MATERIALS
J.R.BARBER: INTERMEDIATE MECHANICS OF MATERIALS
Many of you may know my book on Elasticity, but may not be aware that I also wrote an undergraduate book on Intermediate Mechanics of Materials (Published by McGraw-Hill - ISBN 0-07-232519-4). This picks up from the typical elementary Mechanics of Materials course and deals with the next range of topics such as energy methods, elastic-plastic bending, bending of axisymmetric cylindrical shells and axisymmetric thick-walled cylinders. A full Table of Contents and the Preface are given below.
An introductory paper on thermal combinatorial analysis of nano-scale materials
If you are interested in nano-calorimetry or combinatorial analysis, you might also find the following paper interesting. It was published as part of the MRS spring ‘06 meeting proceedings (http://www.mrs.org/s_mrs/sec_subscribe.asp?CID=6447&DID=175796&action=d…). This paper describes the parallel nano-differential scanning calorimeter (PnDSC), a new device for measuring the thermal properties of nano-scale material systems using a combinatorial approach.
150 Years of Vortex Dynamics
The IUTAM Symposium "150 Years of Vortex Dynamics" will be held October 12-17, 2008, at the Technical University of Denmark (DTU) in Lyngby, and in Copenhagen, Denmark. The rationale behind the title is that H. von Helmholtz published his seminal paper enunciating his three laws of vortex dynamics in 1858.
The Scientific Committee, consisting of Profs. Keith Moffatt (Cambridge), Paul Newton (Los Angeles), Slava Meleshko (Kiev), Morten Brøns (Copenhagen), GertJan van Heijst (Eindhoven), Shigeo Kida (Kyoto), and H. Aref (Copenhagen and Blacksburg) has been constituted.
Why We Use Firefox
By Michael H . Suo and Zhigang Suo
While browsers have improved greatly in recent years, we have noticed that many academics are still missing out on important functions. In this post, we will focus on Firefox, an open-source browser that has recently gained popularity. Note: this is not a Microsoft-bashing article. Internet Explorer 7 is a very functional modern browser, but for the reasons below, we like Firefox better.
Some thoughts on ``Where are fluid mechanicians?''
I think that the note by Zhigang Suo puts forth a pressing issue. Coming from remotely related areas in physics (quantum mechanics and electromagnetic theory), my own interests and work have recently evolved to topics in both solid mechanics (crystal surfaces) and aspects of fluid mechanics (advection-diffusion and a most recent start on biomembranes). Hence, practically, I cannot see any boundaries between these disciplines.