Weekly Seminars

The one-hour ERC TeleSeminars are presented every other Thursday with information and presentation posted below (PDF). Presentations are also posted at our new partner site, SemiNeedle (www.semineedle.com/ERCseminars), where in addition to accessing the presentation you can ask questions and add comments on the presentation and connect with presenters and other attendees.

CURRENT & UPCOMING TELESEMINAR PRESENTATIONS -- 2009-2010: Presentation Time: 11:00AM PST / 12:00PM MST (Arizona) / 1:00PM CST / 2:00PM EST

NOTE	Standard Time began November 2nd; new start-time for Arizona participants
Nov. 12	Host: Inga Musselman, Associate Provost, Office of the Executive Vice President and Provost; Professor, Department of Chemistry, The University of Texas at Dallas Presentation by: Chi-cheng Chiu, Graduate Student, Department of Chemistry, The University of Texas at Dallas Topic title: Computer Simulations of the Interaction between Carbon Based Nanoparticles and Biological Systems Abstract: The interaction of carbon based nanoparticles (CNPs) with biological systems and the environment has drawn increased attention due to their enormous potential applications in the nanoelectronics industry. Molecular simulations have been widely used to reveal molecular insights and predict the chemical, physical, and biological properties of various systems. The driving force behind the need for molecular simulation in nanoscience is the fact that there are few experimental techniques capable of directly imaging or probing nanoscale systems. Much of this information is currently accessible only by simulation (e.g. the structure and dynamics at or near a nanosurface, transport across nanointerfaces, bonding and reactivity at nanosurfaces). Molecular simulation can effectively complement experimental efforts by providing insight into mechanisms and providing a framework in which to interpret experiments. Here we used coarse-grain molecular dynamics (CGMD) simulations to study C60 and carbon nanotubes (CNTs) interacting with a biological membrane. We first derive CG force field parameters for C60 and carbon nanotubes by using optimized benzene CG parameters. Solubility, transfer free energy, and dimerization free energy data for C60 and CNTs obtained using the proposed models show excellent agreement with experimental and fully atomistic MD data. Using the developed CG model, we found C60 molecules tend to form clusters in a lipid bilayer. The aggregation behavior of the present CG force field differs considerably from that of models currently in widespread use. The model was further applied to study the interaction between the CNTs and a biological membrane. Effects of degree of carboxylation, CNT diameter, and multi-walled versus single-walled CNTs were examined. The combined results provide a strong basis for future large scale MD studies involving CNPs and biological systems. Presentation: SemiNeedle enhanced access website: (www.semineedle.com/ERCseminars) ERC website: To be posted (PDF) _________________________________________ Dial-in # (caller paid & International): 1-719-955-1670 Please use this number if your company can cover the long distance charge; this choice will help the ERC budget and keep our cost down. Dial-in # (toll free): 1-800-375-2612 Use this toll free number if needed; the ERC will gladly pay for the long distance charge. Participant pass code: 675623 (followed by # sign) __________________________________________ ~ Please mute your phone during the speaker's presentation to eliminate unnecessary noise over the phone lines; disengage mute for Q&A. If you do NOT have a mute button on your phone, use 6 to engage mute during the presentation, then 6 (again) to disengage. ~ Disengage call waiting (check local phone directory for instructions). ~ Do not put the conference call on hold; "hold audio" will be disruptive to other call participants. ~ For best sound quality when using speaker phones, face the microphone when speaking; mute the phone/microphones when not speaking. ~ If possible, avoid using cellular or cordless phones which may cause unnecessary feedback or noise during the conference
Nov. 26	No TeleSeminar - THANKSGIVING HOLIDAY SCHEDULE
Dec. 10	Host: Ara Philipossian, University of Arizona Presentation by:
Dec. 24	No TeleSeminar - CHRISTMAS HOLIDAY SCHEDULE
	**********2010************
Jan. 7	No TeleSeminar -- NEW YEAR HOLIDAY SCHEDULE
Jan. 14	Host: Juan de Pablo, University of Wisconsin Presentation by:
Jan. 28	Host: Reyes Sierra, University of Arizona Presentation by:

The SRC/SEMATECH Engineering Research Center for Environmentally Benign Semiconductor Manufacturing (ERC) biweekly TeleSeminar Series is hosted by Center member universities: University of Arizona; Massachusetts Institute of Technology; Stanford University; University of California-Berkeley; Arizona State University; Cornell University; Tufts University; Columbia University; University of Massachusetts; University of Washington; University of North Carolina-Chapel Hill; University of Wisconsin; and University of Texas-Dallas.

The ERC TeleSeminars are presented biweekly and are available to participating ERC institutions, industries, and all interested parties and invited guests. The TeleSeminars, presented by ERC PIs, ERC graduate students, and invited academic and industrial guest speakers, focus on specific research efforts within current Center research relevant to the Center's mission.

The dial-in telephone number and participant code is posted with each TeleSeminar (above) as well as in all e-announcements. If you would like to be added to our distribution list, please contact the Center. If you should experience problems with any portion of the dial-in process the day of presentation, please call 520-626-5259 or 520-621-6051 (University of Arizona) for assistance.

Archived presentation materials are available to Center industrial and university members only and require a password to access. Contact Karen McClure for more information.
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STANDARD TIME: (Begins: November 2, 2009; Ends: March 13, 2010)
11:00AM PST / 12:00PM MST (Arizona) / 1:00PM CST / 2:00PM EST

DAYLIGHT SAVING TIME: (Ends: November 1, 2009; Begins: March 14, 2010)
11:00AM PDT / 11:00AM PDT (Arizona) / 12:00 MDT / 1:00PM CDT / 2:00PM EDT
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For more information on the TeleSeminar Series, contact:

Karen McClure
ERC Program Coordinator Sr.
University of Arizona
Email: kmcclure@erc.arizona.edu