November 2006 - BNC-all - ecn.purdue.edu

MSE Seminar: Pablo Daniel Zavattieri, GM R & D Ctr., 12/1/06, MSEE B012, @ 3:30 PM (Understanding Failure of Advanced Materials and Their Interfaces: A Key Enabler for Designing Future Vehicles)
by Kathy Moore 17 Nov '06

17 Nov '06

Attached is the Materials Engineering seminar announcement for Dr. Pablo Zavattieri, General Motors. He is scheduled to be speaking on Friday, December 1, 2006 in MSEE B12 @ 3:45. Please forward to faculty and grad stdts. Thanks!! Kathy Moore ----------------------------------------------- Laura K.(Kathy) Moore, Faculty Assistant Purdue University, School of Materials Engineering 501 Northwestern Avenue - MSEE 150 West Lafayette, IN 47907-2044 (765)494-4100 (765)494-1204 (FAX)

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Tour of Birck, Wednesday, November 15
by Willison, Sheryl L 14 Nov '06

14 Nov '06

Dear BNC Researchers, Tomorrow, Wednesday, President Jischke will be hosting two representatives from a company to which MIT and Purdue are partnered for proposing a very large research program in energy biosciences. Nanotechnology will play a role in this work, so the group will be touring the Birck building between 11:00 and noon. If it is convenient for you to be working in the Birck building during that time I encourage you to do so to give our visitors a sense of what is happening here. Best regards, George George B. Adams III, Ph.D. Special Projects Manager, Discovery Park Research Development Manager, Birck Nanotechnology Center Purdue University 1205 West State Street | West Lafayette, IN 47907-2057 +1 765 494 2698 phone | +1 765 496 8383 fax | www.purdue.edu/nano

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REMINDER: Seminar: F.D. Fischer, Institute of Mechanics, Montanuniversität Leoben, Austria, 11/15/06, ME 256, @ 3:30 PM (On the Role of Surface Energy and Surface Stress in Phase-Transforming Nanoparticles)
by Annie Cheever 14 Nov '06

14 Nov '06

DESIGN AREA SEMINAR November 15, 2006 3:30 pm ME 256 F.D. Fischer Institute of Mechanics, Montanuniversität Leoben, Franz-Josef-Straße 18, A-8700 Leoben, Austria "On the Role of Surface Energy and Surface Stress in Phase-Transforming Nanoparticles" Abstract The role of surface energy and surface stresses has been a topic in thermodynamics and physics since the seminal work by Gibbs. Since both quantities take the same values for liquids this may have given rise to misconceptions in the community in the case of solids. Terms such as surface tension have been applied with a double meaning as a surface stress state or surface energy. These considerations are of special importance for phase transforming nanoparticles (precipitates, transforming or melting/solidifying single particles). A review on the relevant literature is presented showing that the findings from continuum mechanics, esp. the concept of configurational forces (stresses), are often either not known or not accepted. Therefore, the progress report gives a rather detailed introduction into the continuum mechanics and thermodynamics of a moving surface. The relevant literature is referenced and the main findings are reported. Then the terms "surface energy", "surface tension" and "surface stress" and their relations are discussed. A global transformation condition for a sudden phase-transforming nanoparticle is explained. The concept of configurational forces is applied to derive a local transformation condition in a material point at the phase interface. In this case the transformation process is controlled by a moving phase interface. Four different cases for nanoparticles (growing precipitate, growing solid nucleus in liquid, melting particle, solidifying particle) are studied in detail. It can be shown that the surface energy and the surface stress contribute to the thermodynamic force in different ways. The role of both terms is quantified in detail and compared with the case of a sudden transformation of the nanoparticle. Brief Bio Dr. Fischer received his PhD at the Technical University of Vienna, Austria, in 1965. From 1965 to 1983 he held various positions in industry. He was appointed as a Lecturer in Technical Mathematics in 1976 and Lecturer in Technical Mechanics in 1981 both at the Technical University of Vienna. Since 1983 he has been Professor of Mechanics at the Montanuniversität Leoben, Austria. He is a Senior Fellow of the Christian-Doppler-Forschungsgesellschaft Vienna, Austria, a Guest Professor at the Erich Schmid Institute of the Austrian Academy of Sciences (2002-05) and recently received the Erwin Schrödinger Prize of the Austrian Academy of Sciences (2005). He is Head of the Christian Doppler Laboratory of Micromechanics of Materials. He is Author and co-author of more than 450 scientific publications in International Journals and Conference Proceedings. His current research interests include Multicomponent diffusion in multiphase systems; non-equilibrium thermodynamics; Transformation Induced Plasticity; the deformation behaviour of Ti-Al Intermetallics; Constitutive laws for phase-transforming materials; Damping control of structures by means of shape memory alloy devices; Fully three-dimensional modelling of stable ductile crack growth in heterogeneous materials; Straightening of rails - residual stresses and optimal strategy; Microstructure of the running surface of rails. -- ------------------------------------------------------------------------ Annie Cheever, Area Secretary School of Electrical and Computer Engineering acheever(a)purdue.edu Purdue University Birck Nanotechnology Center, Room 2027 1205 West State Street West Lafayette, IN 47907-2057 Phone: 765-496-8327 Fax: 765-496-6443 http://www.nano.purdue.edu/ ------------------------------------------------------------------------

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Birck Town Hall Meeting -- this Thursday
by Deborah Starewich 14 Nov '06

14 Nov '06

TOWN HALL MEETING THURSDAY, 11.16 1:30 PM BRK 1001 Deborah S. Starewich Administrative Assistant to Timothy D. Sands, Director Birck Nanotechnology Center Purdue University 765-494-3509 dstarewi(a)ecn.purdue.edu http://www.nano.purdue.edu/

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Birck Living . . . November 2006
by Deborah Starewich 14 Nov '06

14 Nov '06

Deborah S. Starewich Administrative Assistant to Timothy D. Sands, Director Birck Nanotechnology Center Purdue University 765-494-3509 dstarewi(a)ecn.purdue.edu http://www.nano.purdue.edu/

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MSE Seminar - Lisa C. Klein, MSE, Rutgers, 3:30 PM, MSEE B012 11/17/06 (Methods for Modifying Proton Exchange Membranes (PEM) Using the Sol-Gel Process)
by Kathy Moore 13 Nov '06

13 Nov '06

Attached is the MSE seminar announcement for Dr. Lisa C. Klein, Rutgers Univ., Friday, 11/17 @ 3:30 in MSEE B12. Please distribute to faculty and grad stdts. Thanks!! Kathy Moore ----------------------------------------------- Laura K.(Kathy) Moore, Faculty Assistant Purdue University, School of Materials Engineering 501 Northwestern Avenue - MSEE 150 West Lafayette, IN 47907-2044 (765)494-4100 (765)494-1204 (FAX)

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Town Hall Meeting: Thursday, 11.16, 1:30 BRK 1001
by Deborah Starewich 10 Nov '06

10 Nov '06

See you at the meeting :) Deborah S. Starewich Administrative Assistant to Timothy D. Sands, Director Birck Nanotechnology Center Purdue University 765-494-3509 dstarewi(a)ecn.purdue.edu http://www.nano.purdue.edu/

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Seminar: F.D. Fischer, Institute of Mechanics, Montanuniversität Leoben, Austria, 11/15/06, ME 256, @ 3:30 PM (On the Role of Surface Energy and Surface Stress in Phase-Transforming Nanoparticles)
by Annie Cheever 08 Nov '06

08 Nov '06

DESIGN AREA SEMINAR November 15, 2006 3:30 pm ME 256 F.D. Fischer Institute of Mechanics, Montanuniversität Leoben, Franz-Josef-Straße 18, A-8700 Leoben, Austria "On the Role of Surface Energy and Surface Stress in Phase-Transforming Nanoparticles" Abstract The role of surface energy and surface stresses has been a topic in thermodynamics and physics since the seminal work by Gibbs. Since both quantities take the same values for liquids this may have given rise to misconceptions in the community in the case of solids. Terms such as surface tension have been applied with a double meaning as a surface stress state or surface energy. These considerations are of special importance for phase transforming nanoparticles (precipitates, transforming or melting/solidifying single particles). A review on the relevant literature is presented showing that the findings from continuum mechanics, esp. the concept of configurational forces (stresses), are often either not known or not accepted. Therefore, the progress report gives a rather detailed introduction into the continuum mechanics and thermodynamics of a moving surface. The relevant literature is referenced and the main findings are reported. Then the terms "surface energy", "surface tension" and "surface stress" and their relations are discussed. A global transformation condition for a sudden phase-transforming nanoparticle is explained. The concept of configurational forces is applied to derive a local transformation condition in a material point at the phase interface. In this case the transformation process is controlled by a moving phase interface. Four different cases for nanoparticles (growing precipitate, growing solid nucleus in liquid, melting particle, solidifying particle) are studied in detail. It can be shown that the surface energy and the surface stress contribute to the thermodynamic force in different ways. The role of both terms is quantified in detail and compared with the case of a sudden transformation of the nanoparticle. Brief Bio Dr. Fischer received his PhD at the Technical University of Vienna, Austria, in 1965. From 1965 to 1983 he held various positions in industry. He was appointed as a Lecturer in Technical Mathematics in 1976 and Lecturer in Technical Mechanics in 1981 both at the Technical University of Vienna. Since 1983 he has been Professor of Mechanics at the Montanuniversität Leoben, Austria. He is a Senior Fellow of the Christian-Doppler-Forschungsgesellschaft Vienna, Austria, a Guest Professor at the Erich Schmid Institute of the Austrian Academy of Sciences (2002-05) and recently received the Erwin Schrödinger Prize of the Austrian Academy of Sciences (2005). He is Head of the Christian Doppler Laboratory of Micromechanics of Materials. He is Author and co-author of more than 450 scientific publications in International Journals and Conference Proceedings. His current research interests include Multicomponent diffusion in multiphase systems; non-equilibrium thermodynamics; Transformation Induced Plasticity; the deformation behaviour of Ti-Al Intermetallics; Constitutive laws for phase-transforming materials; Damping control of structures by means of shape memory alloy devices; Fully three-dimensional modelling of stable ductile crack growth in heterogeneous materials; Straightening of rails - residual stresses and optimal strategy; Microstructure of the running surface of rails. -- ------------------------------------------------------------------------ Annie Cheever, Area Secretary School of Electrical and Computer Engineering acheever(a)purdue.edu Purdue University Birck Nanotechnology Center, Room 2027 1205 West State Street West Lafayette, IN 47907-2057 Phone: 765-496-8327 Fax: 765-496-6443 http://www.nano.purdue.edu/ ------------------------------------------------------------------------

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"NH3 annealing furnace @ Birck"
by Hasan Sharifi 08 Nov '06

08 Nov '06

Dear All, If anybody needs NH3 annealing(furnace), please send me an email. Thanks Hasan Sharifi Research Staff at Birck Nanotechnology Center,

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CCAM Visiting Scientist Seminar 11/10/06
by Deborah Starewich 06 Nov '06

06 Nov '06

The professors who organized this seminar asked me to request that you (or an appropriate delegate) distribute the announcement below to the faculty in your department. The seminar is this Friday, November 10th at 4:30 p.m. in REC 315. Purdue University's Center for Computational and Applied Mathematics(CCAM) Welcomes: Professor Weinan E Department of Mathematics and Program in Applied and Computational Mathematics Princeton University Seminar Title: What Can Go Wrong in Coupled Atomistic/Continuum Simulation Methods? Date: Friday, November 10th / 4:30 p.m. REC 315 This seminar is a part of the center's Visiting Scientist Seminar Series: Fall 2006 Theme "Analysis and Computation of Materials". We also have some half hour time slots for faculty and/or students to meet with Professor E on November 10th. If anyone is interested in scheduling some time with him, please contact Heather Connell in the CCAM office at 496-7678. E-mail: connellh(a)math.purdue.edu <mailto:connellh@math.purdue.edu> . Please state your preferred time for a meeting, and CCAM will get back with you to confirm if that time is available. An abstract of his upcoming presentation appears at the bottom of this e-mail. Additional background Information on Professor E: Professor E received his Ph.D. in Mathematics from UCLA. He is currently a Professor in the Dpeartment of Mathematics and Program in Applied and Computational Mathematics at Princeton University. His research centers on developing systematic mathematical analysis and computational methodologies for stochastic and multiscale, multi-physics modeling in science and engineering. Abstract of Upcoming Presentation: Numerical methods based on coupling atomistic and continuum models hold the potential for simulating efficiently the behavior of macroscopic systems and at the same time being faithful to the atomistic details near defects or singularities. However, to achieve this goal, one needs to understand the numerical issues for coupling atomistic and continuum models. In this talk, he will discuss some of the most typical errors in such coupled methods, both for fluids and for solids, and he will discuss ways of removing these errors. __________________________________ Heather A. Connell Center for Computational and Applied Mathematics Department of Mathematics/ College of Science Purdue University 150 N. University Street West Lafayette, IN 47907-2067 Phone: 765-496-7678 E-mail: connellh(a)math.purdue.edu ------ End of Forwarded Message

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