aspuru-list November 2011

aspuru-list@lists.fas.harvard.edu

25 participants
58 discussions

[Aspuru-Guzik group list] [Aspuru-meetings-list] TODAY at 5pm: "Investigating with a Camera" with Errol Morris

by Center for the Environment

Science and Democracy, a lecture series aimed at exploring both the promised benefits or our era's most salient scientific and technological breakthroughs and the potentially harmful consequences of developments that are inadequately understood, debated, or managed by politicians, lay publics, and policy institutions. Errol Morris Filmmaker and Author, Cambridge "Investigating with a Camera" Comments by Elaine Scarry, Walter M. Cabot Professor of Aesthetics and General Theory of Value, Department of English, Harvard University Moderated by Sheila Jasanoff, Pforzheimer Professor of Science and Technology Studies, Harvard Kennedy School Tuesday, November 29, 2011 5:00 - 7:00 pm Piper Auditorium Gund Hall, GSD 48 Quincy Street Harvard University Filmmaker and essayist Errol Morris’ groundbreaking work tackles questions of truth, objectivity, and the role of expert knowledge in modern society. His documentaries are renowned for their innovative use of interviews and archival material. In his STS talk, “Investigating With a Camera,” Morris will reflect on his experiences researching and producing four of his most celebrated films - The Thin Blue Line, on a Texas murder case; Mr. Death, on capital punishment and Holocaust denial; The Fog of War, on Robert McNamara and the Vietnam War; and Standard Operating Procedure, on the Abu Ghraib prison scandal. His new book "Believing is Seeing: Observations on the Mysteries of Photographies" was released by Penguin Press in September. Errol Morris has been listed as one of the top ten film directors in the world by The Guardian. Among his many awards, including five fellowships from the National Endowment of the Arts, a Guggenheim Fellowship, and a MacArthur Fellowship, Morris received the 2003 Academy Award for Best Documentary Feature for “The Fog of War.” His ninth feature-length documentary film, “Tabloid,” debuted in 2010. He is currently a regular contributor to the opinion pages of the New York Times through his blog, Zoom, and his first book of essays, Believing is Seeing, was published in 2011 by Penguin Press. This event is organized by the Program on Science, Technology, and Society, at the Harvard Kennedy School and co-sponsored by the School of Engineering and Applied Sciences, the Graduate School of Design, and the Harvard University Center for the Environment. For more information on Science, Technology, and Society events at Harvard University, please visit: www.ksg.harvard.edu/sts/. This lecture and discussion is free and open to the public. **Screenings of Morris’ films will be held at the Brattle Theater the week of November 27. Visit the Brattle Theatre website for schedule and ticket information: http://brattlefilm.org/category/calendar-2/repertory-series/seeing-is-belie… ** Contact: Lisa Matthews Assistant Director of Events and Communications Harvard University Center for the Environment 24 Oxford Street Cambridge, MA 02138 lisa_matthews(a)harvard.edu p. 617-495-8883 f. 617-496-0425 Become a Fan of HUCE on Facebook! *|LIST_BIODIVERSITY|* [6]Unsubscribe aspuru-meetings-list(a)lists.fas.harvard.edu from this list. Links: 6. http://harvard.us1.list-manage2.com/unsubscribe?u=7532d1fbf18f39219ac742ebe… Our mailing address is: 24 Oxford St. Cambridge, MA 02138 T: (617) 495-0368 www.environment.harvard.edu Copyright (C) 2008 Harvard University. All rights reserved. [7]Forward this email to a friend Links: 7. http://us1.forward-to-friend2.com/forward?u=7532d1fbf18f39219ac742ebe&id=99… _______________________________________________ Aspuru-meetings-list mailing list Aspuru-meetings-list(a)lists.fas.harvard.edu https://lists.fas.harvard.edu/mailman/listinfo/aspuru-meetings-list

12 years, 5 months

[Aspuru-Guzik group list] Fwd: [CCB_Staff] FREE HUPD Laptop Registration: Fri, Dec 2, 10AM - Noon

by Anna B. Shin

Dear Group, Please bring your laptops and HUID cards on Friday to register them with HUPD, in case they're ever stolen. Adrian: I need to register the loaner laptop that you are using. Please bring it by that morning. Thanks! Regards, Anna Anna B. Shin Laboratory Administrator | Aspuru-Guzik Research Group Department of Chemistry and Chemical Biology | Harvard University 12 Oxford Street | Cambridge, MA 02138 617.496.9964 office | 617.694.9879 cell | 617.496.9411 fax http://aspuru.chem.harvard.edu/ <https://mail.google.com/mail/u/0/?ui=2&ik=e7480c62f0&view=att&th=12eee19970…> ---------- Forwarded message ---------- From: Aloise, Allen <aloise(a)chemistry.harvard.edu> Date: Mon, Nov 28, 2011 at 5:03 PM Subject: [CCB_Staff] FREE HUPD Laptop Registration: Fri, Dec 2, 10AM - Noon To: #List-CCB-Gradstudents <gradstudents(a)chemistry.harvard.edu>, #List-CCB-OtherGradStudents <othergradstudents(a)chemistry.harvard.edu>, #List-CCB-PostDocs <postdocs(a)chemistry.harvard.edu>, #List-CCB-Staff < staff(a)chemistry.harvard.edu>, #List-CCB-Faculty < faculty(a)chemistry.harvard.edu> Dear CCB, ** ** The Harvard University Police Department (HUPD) will be offering free laptop registration for all CCB researchers this *Friday, Dec 2, from 10AM - Noon in the Division Room (102 Mallinckrodt Lab)*. The registration process includes affixing a small, permanently bonded, ID tag with a unique serial number to the outside of your laptop. The ID number will be linked with your contact information in a HUPD database. This tag will allow for a recovered stolen laptop to be returned to its owner and may also serve as a visible deterrent to thieves, as selling a "tagged" laptop should present additional difficulties. ** ** To take advantage of this opportunity, just show up with your laptop and your HUID. CCB will cover the $10 fee per laptop fee. ** ** Please remember that laptop registration is just one among several precautions that you can take to safeguard your computer. Using a security cable and locking unattended laptops in a secure drawer/cabinet should also be practiced. Best, Allen P.S. My thanks to Nicole Minotti for facilitating this event. --------------------------------------------------------------------- Allen Aloise, Ph.D. Director of Laboratories Co-Director of Graduate Studies Department of Chemistry and Chemical Biology (CCB) Harvard University 12 Oxford St. Cambridge, MA 02138 617-495-4283 (office) 617-496-5618 (fax) aloise(a)chemistry.harvard.edu _______________________________________________ ccb_staff mailing list ccb_staff(a)lists.fas.harvard.edu https://lists.fas.harvard.edu/mailman/listinfo/ccb_staff

12 years, 5 months

[Aspuru-Guzik group list] [qip] Tuesday this week

by Edward Farhi

Hi Quanta We will meet on Tuesday November 29 at 11:00. Usual spot. Scott promises to tell us something. Best, Eddie ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: Edward Farhi Cecil and Ida Green Professor of Physics Director Center for Theoretical Physics Massachusetts Institute of Technology 6-300 Cambridge MA 02139 617 253 4871 ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

12 years, 5 months

[Aspuru-Guzik group list] SEMINAR: Center for Excitonics , Tues. Nov. 29, 3 pm, 36-428

by Cathy Bourgeois

Please post and forward to your groups Center for Excitonics Seminar Series Tues. November 29, 2011 3:00 PM - 4:00 PM Haus Conference Room - 36-428 "Spectroscopy of complex molecular systems: Physics on an exciton cake-walk" Jasper Knoester, Zernike Institute for Advanced Materials, University of Groningen abstract The concept of excitons, collective excited states, is well-known in solid-state physics. It was first developed by Frenkel in the 1930's to explain the absorption spectrum of perfect molecular crystals, in which case the excitons are simple Bloch waves of excitation. Over the years, it has become apparent that also less regular structures carry delocalized excitations, which are responsible for many of their electromagnetic properties and energy transport characteristics. In this presentation, I will address two classes of such systems. The first class are molecular J-aggregates, large self-assembled structures containing up to 1000's of molecules, which play a role in opto-electronic applications and natural photosynthetic systems. The second class are polypeptides and proteins, in which case collective vibrations are the excitations of interest. The irregular nature of these systems and the occurrence of fluctuations in their host, provide a complex and dynamic landscape in which the excitons are created, evolve, and decay. I will address the basic physics of these systems, some of their intriguing properties, and the theoretical tools used by us to analyse and predict (ultrafast) spectroscopic experiments in the visible and the infrared used to probe these properties. bio Jasper Knoester received his MSc and PhD in Theoretical Physics at the University of Utrecht, The Netherlands, in 1983 and 1987, respectively. Currently, he is the Dean of Faculty of Mathematics and Natural Sciences and Professor of Theoretical Physics at the University of Groningen, The Netherlands. He conducts his research in the Theory of Condensed Matter Group at the Zernike Institute for Advanced Materials in optical and electronic properties of condensed phases, in particular of (bio)molecular aggregates and conjugated polymers; vibrational dynamics and infrared spectroscopy of polypeptides and proteins; low-dimensional systems; spin systems; disorder and localization; QED near dielectric interfaces; light scattering on photonic crystals, plasmonics. Light refreshments will be provided

12 years, 5 months

[Aspuru-Guzik group list] [Aspuru-meetings-list] Group meeting by John tomorrow

by Joel Yuen

When: Monday November 28 from 2 to 3 PM Where: Cabot Division Room at Mallinckrodt What: John is up for group meeting: Title: "Polaron-Transformed electronic response theory." I'll present a natural ab-initio counterpart of open-systems DFT, an electronic response theory dressed by the small-polaron transformation. The trick of the method is that system-bath coupling occurs only with the electron-electron interaction, so that all correlated electron response theories in the polaron frame are, loosely speaking, master equations. Previous difficulties forming a Dyson equation are sidestepped by the Time-Convolutionless perturbation theory, which produces a model which resembles CIS(D), but dressed by bath coupling. Preliminary implementation is discussed. Time permitting I'll discuss how tricks of variational ground state methods can be used for dynamical problems. -- Joel Yuen-Zhou PhD candidate in Chemical Physics Harvard University CCB, 12 Oxford St. Mailbox 107, Cambridge, MA, USA. _______________________________________________ Aspuru-meetings-list mailing list Aspuru-meetings-list(a)lists.fas.harvard.edu https://lists.fas.harvard.edu/mailman/listinfo/aspuru-meetings-list

12 years, 5 months

[Aspuru-Guzik group list] Giving thanks for FMO

by Jacob Krich

12 years, 5 months

[Aspuru-Guzik group list] For the FMO and possibly J-aggregate modelers

by Jacob Krich

12 years, 5 months

[Aspuru-Guzik group list] [Aspuru-meetings-list] HUCE Weekly Calendar Email November 23 - December 8

by Center for the Environment

Highlights: Tuesday, November 29: The Science and Democracy Lecture series welcomes Errol Morris, Academy Award-winning filmmaker and author, for his talk, "Investigating with a Camera." He will reflect on his experiences researching and producing four of his most celebrated films and his most recent novel. Wednesday, November 30: James T. Hackett, Chairman and Chief Executive Officer of Anadarko Petroleum Corporation, concludes the fall Future of Energy series with a talk on "North America’s New Age of Energy Abundance: Prudent Oil and Natural Gas Development." Tuesday, December 1: Join Dr. Steven Chu, US Secretary of Energy, for a Department of Molecular and Cellular Biology Lecture on, "The Role of Science, Technology and Innovation in Solving the Energy Challenge." Calendar Listings: November 24: Happy Thanksgiving! November 28 11:45am - 12:45pm Harvard Energy Journal Club HUCE Seminar Room, 24 Oxford Street, 3rd Floor, Cambridge Facilitating discussion and furthering our understanding of the technical details of energy technology and science. Visit the Energy Journal website for updates and topics of discussion. http://www.hcs.harvard.edu/~hejc/ Contact Name: Dan Recht drecht(a)fas.harvard.edu 12:00pm - 1:00pm MCZ Lunchtime Seminar MCZ 101 Seminar Room, 26 Oxford Street, Cambridge "The role of environmental gradients and food web interactions in fish diversification"with Travis Ingram, Postdoctoral Researcher, Herpetology, Losos Lab. Feel free to bring your lunch! Beverages and snacks will be provided. Contact Name: Catherine Weisel cweisel(a)oeb.harvard.edu (617) 495-2460 12:00pm - 1:30pm Energy Policy Seminar Bell Hall, 5th Floor, Belfer Building, 79 JFK Street, Cambridge Sue Tierney, Analysis Group, "Recent Developments in Shale Gas: Observations from the Vantage Point of Two New Studies (National Petroleum Council and the Secretary of Energy Advisory Board)." Lunch will be provided. Contact Name: Louisa Lund louisa_lund(a)hks.harvard.edu 12:15pm - 2:00pm STS Circle Lecture 124 Mt. Auburn Street, Suite 100, Room 106, Cambridge Featuring Cristina Grasseni (Radcliffe Institute), "Skilled Visions: Critical Ecologies of Belonging." Please RSVP to sts(a)hks.harvard.edu by the Thursday before. http://www.hks.harvard.edu/sts 4:00pm EPS Colloquium Haller Hall, 24 Oxford Street, Cambridge With Steve Krueger, University of Utah. Hosted by Zhiming Kuang. Contact Name: Sabinna Cappo scappo(a)fas.harvard.edu November 29, 2011 3:00pm ClimaTea HUCE Seminar Room, 24 Oxford Street 3rd Floor, Cambridge Visit the ClimaTea website for a list of speakers and topics: http://www.seas.harvard.edu/climate/seminars/climatea.html 5:00pm - 7:00pm Science and Democracy with Errol Morris: “Investigating with a Camera” Piper Auditorium, Gund Hall, 48 Quincy St, Cambridge Errol Morris, Academy Award-winning filmmaker and author, will reflect on his experiences researching and producing four of his most celebrated films and his most recent novel. Featuring panelist Elaine Scarry, Walter M. Cabot Professor of Aesthetics and General Theory of Value, Department of English, Harvard University; moderated by Sheila Jasanoff, Pforzheimer Professor of Science and Technology Studies, Harvard Kennedy School. http://www.hks.harvard.edu/sts 6:00pm - 7:30pm Harvard Energy Innovation Showcase Harvard Hall 201, 12 Harvard Yard, Cambridge Harvard's leading energy innovators present their cutting-edge clean energy research and perspectives on commercializing innovation. https://docs.google.com/spreadsheet/viewform?formkey=dC1RZTNKNnk4bEg4UXFZWU…... 7:00pm - 8:30pm American Eden: What Our Gardens Tell Us About Who We Are Trinity Church, 206 Clarendon St, Boston Featuring Wade Graham, Designer, Historian, Adjunct Professor of Public Policy, Pepperdine University. http://my.arboretum.harvard.edu Contact Name: pam_thompson(a)harvard.edu November 30, 2011 11:00am - 12:00pm OEB Seminar Series BioLabs Main Lecture Hall, 16 Divinity Avenue, Cambridge "From Democratic Consensus to Cannibalistic Hordes: The Principles of Collective Behavior" with Iain Couzin, Princeton University. Hosted by: Olveczky and Pierce Labs 12:00pm Winning the Clean Energy Race MIT Kresge Auditorium (W16), 48 Massachusetts Avenue, Cambridge An address by U.S. Secretary of Energy Dr. Steven Chu. http://events.r20.constantcontact.com/register/event?llr=9covq4hab&oeidk=a0…... 5:00pm Future of Energy Lecture Science Center D, 1 Oxford Street, Cambridge “North America’s New Age of Energy Abundance: Prudent Oil and Natural Gas Development” with James Hackett, Chairman of the Board and Chief Executive Officer, Anadarko Petroleum Corporation. Contact Name: Lisa Matthews lisa_matthews(a)harvard.edu 6:00pm Relics: Travels in Nature's Time Machine Harvard Museum of Natural History, 26 Oxford Street, Cambridge Zoologist Piotr Naskrecki will give a lecture and sign his latest book, Relics, which captures creatures or habitats that, while acted upon by evolution, remain remarkably similar to their earliest manifestations in the fossil record. http://www.hmnh.harvard.edu/lectures_and_special_events/index.php 8:00pm - 9:00pm Environmental Action Committee Meeting Quincy House, Spindell Room, Harvard University, Cambridge Everyone interested in learning about the EAC and/or learning how to help make a difference for the environment is welcome. http://www.hcs.harvard.edu/~eac/ Contact Name: Jackson Salovaara jsalov(a)fas.harvard.edu December 1, 2011 11:30am - 1:00pm Ecology Journal Club HUCE Seminar Room 310, 24 Oxford St. 3rd Floor, Cambridge Reading and discussion group on diverse topics in ecology. Visit the website for topics of discussion. All interested researchers are welcome and lunch is provided. http://www.oeb.harvard.edu/faculty/pringle/journalclub.htm Contact Name: Primrose Boynton pboynton(a)fas.harvard.edu 12:00pm - 1:00pm MCB Bloch Lecture: Dr. Steven Chu, US Secretary of Energy Northwest Lecture Hall B-103, 52 Oxford Street, Cambridge Department of Molecular and Cellular Biology Lecture: "The Role of Science, Technology and Innovation in Solving the Energy Challenge" with Steven Chu, US Secretary of Energy. http://www.mcb.harvard.edu/NewsEvents/Calendar/Event.asp?ID=3148 Contact Name: Michelle Cicerano mcicerano(a)mcb.harvard.edu (617) 495-4448 3:30pm China Project Seminar Pierce Hall 100F, 29 Oxford St., Cambridge "Environmental Consequences of International Trade, with Focus on China" featuring XU Ming, Assistant Professor of Sustainable Systems, School of Natural Resources and Environment; Assistant Professor of Civil and Environmental Engineering, University of Michigan. http://chinaproject.harvard.edu/seminar%20folder/seminar/XuMing111201 Contact Name: Chris Nielsen nielsen2(a)fas.harvard.edu 5:30pm Edmond J. Safra Center for Ethics Lecture Austin Hall, 100 North, Harvard Law School, 1515 Massachusetts Ave., Cambridge "When the Experts are Uncertain: Scientific Knowledge and the Ethics of Democratic Judgment"with Melissa Lane, Professor of Politics, Princeton University. http://www.ethics.harvard.edu Contact Name: Abigail Bergman Gorlach abigail(a)ethics.harvard.edu (617) 495-0599 5:30pm Peabody Museum Lecture Peabody Museum Geological Lecture Hall, 24 Oxford Street, Cambridge "Products, Plastics, Putrefaction and Power: Rethinking how we Manage Materials to Achieve Just Sustainability," with Samantha MacBride, Adjunct Professor, Columbia University. This is part of the series, “Trash Talk: the Anthropology of Waste.” http://www.peabody.harvard.edu/files/2011%20Fall%20Cal_0.pdf December 2, 2011 4:00pm Ghost Orchids Harvard Museum of Natural History, 26 Oxford Street, Cambridge In this sculpture display in the museum’s Glass Flowers gallery, Scottish artist Siobhan Healy creates a subtle and thought-provoking piece inspired by the Ghost Orchid (Epipogium aphyllum), a rare British wild flower recently rediscovered after it was thought to be extinct for 23 years. December 5, 2011 11:45am - 12:45pm Harvard Energy Journal Club HUCE Seminar Room, 24 Oxford Street, 3rd Floor, Cambridge Facilitating discussion and furthering our understanding of the technical details of energy technology and science. Visit the Energy Journal website for updates and topics of discussion. http://www.hcs.harvard.edu/~hejc/ Contact Name: Dan Recht drecht(a)fas.harvard.edu 12:00pm - 1:30pm Energy Policy Seminar Bell Hall, 5th Floor, Belfer Building, HKS, 79 JFK Street, Cambridge Richard Lazarus, Harvard Law School, "Investigating the Gulf Oil Spill: Challenges and Opportunities.” Lunch will be provided. Contact Name: Louisa Lund louisa_lund(a)hks.harvard.edu 12:15pm - 2:00pm STS Circle Lecture 124 Mt. Auburn St, Suite 100, Room 106, Cambridge With Jonathan Zittrain (Harvard Law & HKS), "Minds for Sale." Please RSVP to sts(a)hks.harvard.edu by the Thursday before. http://www.hks.harvard.edu/sts December 6, 2011 3:00pm ClimaTea HUCE Seminar Room, 24 Oxford Street 3rd Floor, Cambridge Visit the ClimaTea website for a list of speakers and topics: http://www.seas.harvard.edu/climate/seminars/climatea.html December 7, 2011 8:30am - 5:00pm New England Water Law and Policy Conference Holiday Inn Hotel & Suites, 265 Lakeside Avenue, Marlborough This one-day Eastern Water Law and Policy conference will provide a great networking and information exchange opportunity. It will provide state and federal regulatory updates and clarifications, information about current water issues and litigation, and cost effective groundwater protection strategies. http://www.agwt.org/events/2011/2011MA_Legal_Program.pdf Contact Name: Jacqueline Daoust jdaoust(a)agwt.org 7:00pm - 8:30pm Deadly Nightshades: From Potatoes to Poisons Hunnewell Building, 125 Arborway, Boston Featuring Gregory J. Anderson, Professor of Ecology and Evolutionary Biology, University of Connecticut. http://my.arboretum.harvard.edu Contact Name: pam_thompson(a)harvard.edu December 8, 2011 11:30am - 1:00pm Ecology Journal Club HUCE Seminar Room 310, 24 Oxford St. 3rd Floor, Cambridge Reading and discussion group on diverse topics in ecology. Visit the website for topics of discussion. All interested researchers are welcome and lunch is provided. http://www.oeb.harvard.edu/faculty/pringle/journalclub.htm Contact Name: Primrose Boynton pboynton(a)fas.harvard.edu 12:30pm - 1:20pm Environmental Health Colloquium Harvard School of Public Health, Building 1, Room 1302, 677 Huntington Avenue, Boston Featuring Brian Schwartz [videoconference], Co-director, Program on Global Sustainability and Health, Johns Hopkins Bloomberg School of Public Health. Contact Name: Alissa Wilcox awilcox(a)hsph.harvard.edu 5:00pm Harvard Thinks Green Sanders Theatre, 45 Quincy Street, Cambridge Join 6 all-star environmental faculty as they present 6 big green ideas. http://green.harvard.edu/thinksgreen Contact Name: Jaclyn Olsen jaclyn_olsen(a)harvard.edu --- Always check the calendar on the website for updated information. If you would like to submit an event to the calendar, contact Lisa Matthews at the Center for the Environment: lisa_matthews(a)harvard.edu. Be sure to sign up to receive the HUCE newsletter. <a href="http://us1.campaign-archive2.com/?u=7532d1fbf18f39219ac742ebe&id=b9312084fe…" title="Like HUCE Weekly Calendar Email November 23 - December 8 on Facebook" rel="fblikebtn"><img src="http://cdn-images.mailchimp.com/fb/like.gif" border="0" alt="Like HUCE Weekly Calendar Email November 23 - December 8 on Facebook" height="20" width="48" style="display:inline;"/></a> Become a Fan of HUCE on Facebook! You are receiving this email because you indicated interest in Harvard University Center for the Environment events. [75]Unsubscribe aspuru-meetings-list(a)lists.fas.harvard.edu from this list. Links: 75. http://harvard.us1.list-manage1.com/unsubscribe?u=7532d1fbf18f39219ac742ebe… Our mailing address is: 24 Oxford St. Cambridge, MA 02138 (T) 617-495-0368 www.environment.harvard.edu Copyright (C) 2008 Harvard University. All rights reserved. _______________________________________________ Aspuru-meetings-list mailing list Aspuru-meetings-list(a)lists.fas.harvard.edu https://lists.fas.harvard.edu/mailman/listinfo/aspuru-meetings-list

12 years, 5 months

[Aspuru-Guzik group list] Jeong-il Park visit

by Sule Atahan-Evrenk

Dear All, Jeong-il Park from Samsung Organic Electronics Lab will be visiting on Nov 29. He will meet with Alan 11-12:00. He might stay 1-2 hours longer if anyone else would like to meet. Please let me know if you are interested. Happy Thanksgiving, Sule.

12 years, 5 months

[Aspuru-Guzik group list] SEMINAR: Excitonics Seminar, Thurs. Dec. 1, 3 pm, 36-428

by Cathy Bourgeois

Please post and forward to your groups ___________________________ Center for Excitonics Seminar Series Thursday, Dec. 1, 2011 3:00 PM - 4:00 PM Haus Conference Room - 36-428 "Real time observations of the nucleation and growth of nanowires and nanotubes" Eric Stach, Center for Functional Nanomaterials Brookhaven National Laboratory abstract Crucial to the application of nanostructured materials is control over their nucleation and growth, as these aspects determine their structure and thus properties. We will review our work concerning these issues in both semiconductor nanowires and carbon nanotubes. These studies exploit a combination of environmental and ultra-high vacuum transmission electron microscopy approaches to observe these processes in real time and at high resolutions. Interestingly, nanowire and nanotube growth share many similarities. In each case small metal nanoparticles are used to catalyze the decomposition of relatively simple source gas. This decomposition leads to incorporation of the growth element (Si, Ge, C, .) into the particle until supersaturation is reached and the new nanostructure nucleates and grows. We will present measurements of the nucleation and growth process in Si nanowires, quantifying the process as it proceeds from the initial solid Au nanoparticle, through the creation of the AuSi eutectic liquid and finally towards Si nanowire nucleation and growth. The observations will demonstrate the reproducibility of the process, and allow determination of the rate limiting steps for nanowire growth. In the case of carbon nanotube growth, we will demonstrate that both Ostwald ripening and atomistic diffusion of the Fe catalytic nanoparticles lead to growth termination and we will present early results that suggest a pathway towards the creation of an 'immortal' catalyst to support continuous nanotube growth. Recent observations suggesting a route towards chirality control will also be outlined. Specific parallels and differences between our nanowire and nanotube observations will be made. bio Eric Stach leads the Electron Microscopy Group in the Center for Functional Nanomaterials (CFN) at Brookhaven National Laboratory. He received his Ph.D. in Materials Science and Engineering from the University of Virginia. He has held positions as Staff Scientist and Principal Investigator at the National Center for Electron Microscopy at the Lawrence Berkeley National Laboratory and as Associate then Full Professor at Purdue University, where he retains an Adjunct appointment. His research interests focus on the development and application of electron microscopy techniques to solve materials problems in nanostructure growth, catalysis, thin film growth and materials deformation. Light refreshments will be provided

12 years, 5 months

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aspuru-list November 2011