When a dielectric is placed in an electric field, it becomes polarized - positive and negative charges are separated, producing polarization defined as dipole moment per unit volume. Simultaneously, the dielectric experiences electrostrictive strain that is quadratic to polarization, though it is usually negligibly small. However, if the dielectric has no symmetry center, relatively large piezoelectric strain proportional to the electric field is also possible. Among 21 crystalline classes without a symmetry center, 20 of them are piezoelectric, within which 10 of them possess a unique polar axis that is spontaneously polarized, referred to as pyroelectric, whose spontaneous polarization varies with temperature. If such spontaneous polarization can be reversed by an external electric field, then the pyroelectric is also ferroelectric, and ferroelectricity refers to switching of spontaneous polarization in pyroelectric.
We are deeply sorry to report that Fred Leckie died on Friday, 14 June 2013, at the age of 84. A brief description of Fred's career is contained in the 2000 ASME Materials Division Newsletter, when Fred received the Nadai Medal.
The funeral is at Christ Church, 1415 Pelhamdale Avenue, Pelham Manor, NY 10803, on Friday June 21st, at 10am. In lieu of flowers, a contribution can be made to the University of St. Andrews American Foundation Inc with a note for it to be applied to bursaries for Scottish students in memory of Fred Leckie.
(Fall 2013 MRS) Symposium VV: Designed Cellular Materials—Synthesis, Modeling, Analysis and ApplicationsSubmitted by William Carter on Fri, 2013-06-14 20:06.
We wanted to make sure everyone knew about this symposium, tucked away under the nanotechnology category, for the fall 2013 MRS meeting. Abstracts are due soon. We expect a heavy mechanics component for this symposium.
MRS Symposium VV: Designed Cellular Materials—Synthesis, Modeling, Analysis and Applications
2014 MRS Spring Meeting Symposium P: Mechanics of Energy Storage and Conversion—Batteries, Thermoelectrics and Fuel CellsSubmitted by jiangyuli on Fri, 2013-06-14 05:02.
Ying Li , Brendan C. Abberton , Martin Kröger and Wing Kam Liu
The School of Mechanical Engineering and Mechanics, Ningbo University, is looking for cadidates for all subjects in the broad field of mechanical engineering and mechanics. In addition to traditional field of impact and shock waves, piezoelectric devices, material durability, and metal forming, the school are also initiating new directions like vechicle engineering, fluid mechanics, occean engineering, and other related subjects.
Positions in ALL ranks are available. Currently we are taking applications for 2014 school year.
We are looking for candidates with good publication record and potential for independent research.
The University provides competitive benefit packages for qualified applicants.
Introduction: This symposium is about energy challenges and roles of mechanics as a means for seeking solutions, involving multiple disciplines in technology, science and management. The venue of the symposium is in Aberdeen, Scotland, the Energy Capital of Europe. Since Watt, a Scottish, invented the steam engine, human civilization relies more and more on energy supply. The re-rise as an international superpower and the global energy crisis are challenging China and the world. Many Chinese engineers and mechanicians are taking leading roles in international conferences, so we adopt English/Chinese bilingual for communication.
The Skolkovo Institute of Science and Technology (Skoltech) seeks candidates for tenured and tenure-track positions to begin Fall 2013 or thereafter. Skoltech is an innovative, new, private university located just outside of Moscow, Russia.
Call for postdoctoral applications in solid mechanics
"Electro-Mechanical modeling of electrical contacts"
I wanted to draw your attention to a paper published last year in PNAS
where we analyze physical aspects of how euglenoids move
PhD Studentship@University of Southampton, UK - Wet Adhesive Poro-Viscoelastic Contact Along Human Skin SurfaceSubmitted by wwfchong on Fri, 2013-06-07 07:44.
Skin, the largest organ of the human body, acts as a
multi-functional biophysical interface to the external environment. The serial
interfacial phenomena along the skin/environment conjunction, particularly when
interacting with cosmetic and consumer goods (e.g. razor and shave preparation)
is determined by the interplay between the chemical structure and arrangement
of stratum corneum lipids,
environmental factors (e.g. hydration level) and also the physical
characteristics of skin surface relief. Therefore, the chemical and biophysical
properties of the stratum corneum
need to be considered jointly to approach the complexity of skin tribo-physics.
These technical challenges present outstanding opportunities for high quality
PhD Studentship@University of Southampton,UK-The Design of Lubricant-Surface Interaction for Reduced Boundary Friction and WearSubmitted by wwfchong on Fri, 2013-06-07 07:40.
Mechanical losses account for 15% of total energy loss in an
IC engine where 45% of these losses result from friction of piston-ring
assembly. An increase in mechanical efficiency of 10% could lead to improved
fuel consumption of 1.5%. Taking into account the large number of vehicles on
road (30 million in the UK in 2010 according to the Society of Motor
Manufacturers and Traders) and fuel
consumption of 12.5 miles/litre, the potential fuel saving would accrue to
approximated £647 million/annum, which is substantial to the country's economy.
Therefore, the advantage in improving mechanical efficiency of IC engines and
also other machines is self-evident.
The 9th International Conference on the Mechanics of Time Dependent Materials will be held in Montréal, Canada, from May 27th to 30th 2014. The purpose of this conference is to foster exchanges between researchers dealing with mechanical (solid mechanics, fluid mechanics, rheology, etc.) time-dependent aspects of different materials so as to generate new ideas and solutions for nowadays problems. The conference features 4 keynotes presentation given by world-class experts dealing with polymers, composites, metals and living tissues.
The deadline for submitting abstracts is November 1st 2013.
A Surface Stacking Fault Energy Approach to Predicting Defect Nucleation in Surface-Dominated NanostructuresSubmitted by Harold S. Park on Mon, 2013-06-03 00:29.
Recently accepted for publication in JMPS:
A Ph.D. position will be available in the Department of Mechanical Engineering and Applied Mathematics at Ecole des Mines de Paris. The position will start in October, 2013. The candidate will join the research group: Advanced Computational Mechanics based at Sophia Antipolis in the south of France. The project is funded by an industrial consortium such as Snecma and Areva leaders in aerospace engineering.
A full-time post-doctoral position is available within the ERC Starting Grant Project MuSIC -- Modeling and Simulation of Cancer Growth, which is led by Prof. Hector Gomez. The general goal of the project is to develop biophysical models to predict cancer growth.
The successful applicant will have a strong background on Medical Image Processing and the Finite Element Method or, preferably Isogeometric Analysis. Knowledge about the biology of cancer, and cancer modeling is desirable.
The position is for at least two years. High compensation for strong candidates.
cracks do not appear as a result of an ideal separation of two adjacent atomic
layers. Just the opposite, cracks appear as a result of the development of
multiple micro-cracks triggered by the massive breakage of atomic bonds. The microcracking
and the bond breakage are not confined to two neighbor atomic planes: the
process involves thousands atomic planes within the representative characteristic
volume of size h. This size defines the width (not the lenth) of the damage
localization zone and it can be called the crack thickness. The knowledge of
We would like to highlight to all the interested students that is now opened the competition for the academic year 2013-2014 (starting from November 1, 2013) for 5 positions in PhD program in "Computational Mechanics and Advanced Materials" hosted by the The Institute for Advanced Study of Pavia, in cooperation with the University of Pavia. The program chairman is Prof. F. Auricchio.
Lockheed Martin funded Post-Doctoral Position: Carbon Nano Structured Materials at Masdar Institute, Abu DhabiSubmitted by priyank_upadhyaya on Wed, 2013-05-29 03:30.
Applications are invited for the position of "Post‐doctoral Research Fellow" as part of a multi-disciplinary collaborative project funded by Lockheed Martin. The project's Principal Investigators are:
Dr. Kumar Shanmugam, Mechanical Engineering
Dr. Matteo Chiesa, Materials Science & Engineering
Dr. Amal Al Ghaferi, Materials Science & Engineering
Published in Acta Materialia (June, 2013):
UTC is pleased to announce the start of the second year of the MSCI master in Interacting Complex Systems, taught in English.
MSCI delivers a national master diploma fully accredited by French Ministry of Higher Education.
I am seeking a Postdoctoral Fellow to work on theoretical and computational
modeling of Traumatic Brain Injury. The position is available immediately. The
potential candidate should have a
Ph.D. (or must have completed the requirements for the Ph.D.) with a background in Solid Mechanics, Biomechanics or related field. The candidate
will be a part of Hopkins Extreme Material Institute (hemi.jhu.edu), under the
guidance of K.T. Ramesh and myself.
One postdoctoral research associate position is anticipated at the Department of
Mechanical Engineering and the Department of Materials Science and Engineering
at the University of Washington. The successful candidate will work on
developing novel morphing structures using shape memory alloys and thermoelectric
materials, in collaboration with the Boeing Company. The candidate should have
Ph.D. degree in Mechanical Engineering, Materials Science and Engineering, or
related field, have strong experimental experience in smart materials and