aspuru-list March 2015

aspuru-list@lists.fas.harvard.edu

32 participants
64 discussions

[Aspuru-Guzik group list] [theochem-announce] Theoretical Chemistry seminar Wednesday 3/11 at 4 PM in 4-163!

by Michael Mavros

Dear all, Professor Anastassia Alexandrova will be giving a talk as part of the theoretical chemistry seminar series this Wednesday, March 11 at 4 PM in 4-163. The title of her talk is: "Design of artificial enzymes: catalysis ahead of nature" Abstract: TBA We hope to see you all there! -- Michael Mavros Department of Chemistry, Massachusetts Institute of Technology _______________________________________________ theochem-announce mailing list theochem-announce(a)mit.edu http://mailman.mit.edu/mailman/listinfo/theochem-announce

9 years, 1 month

[Aspuru-Guzik group list] [IACS-events] REMINDER: IACS Seminar: "Chile-Harvard Innovative Learning Exchange"------ TODAY, Friday 3/6 @1pm

by Baker, Natasha

Date: Friday, March 6, 2015--- TODAY!!! Location: Maxwell Dworkin G115, 33 Oxford Street, Cambridge MA 02138 Speakers: Diana Zhang, Sabrina Zhou, Xufei Wang, Lyla Fadden, Kim Minjae Time: Lunch 12:30pm; Talk 1-1:30pm Title: Chile-Harvard Innovative Learning Exchange Abstract: Five Harvard graduate students will discuss their recent research trip to Chile to analyze data from the Dark Energy Camera (DECam). The DECam is one of the instruments used in the Dark Energy Survey<http://www.darkenergysurvey.org/> (DES), an international effort “designed to probe the origin of the accelerating universe" and help uncover the nature of dark energy." Collaborating with students at the University of Chile, Harvard students were separated into small teams and ask to identify and classify objects as galaxies, stars or asteroids. Designed by IACS Scientific Program Director and Lecturer Pavlos Protopapas<http://iacs.seas.harvard.edu/people/pavlos-protopapas>, the two-week Chile-Harvard Innovative Learning Exchange Program is in its second year and aims to provide students the experience of working on international teams with noisy and imperfect data sets. Free and open to the public. No registration required. *********************** UPCOMING SEMINARS 3/27 Jeff Bilmes<http://www.ee.washington.edu/faculty/bilmes/> (University of Washington) 4/10 Budhendra Bhaduri<http://web.ornl.gov/sci/gist/staff_bios/staff_bhaduri.shtml> (Oak Ridge National Laboratory<http://www.ornl.gov/>--- Geographic Information Science and Technology) 4/24 Christian Rudder<http://www.okcupid.com/about> (OkCupid) Click here<https://lists.seas.harvard.edu/mailman/listinfo/iacs-events> to subscribe to our events list. _______________________________________________ Iacs-events mailing list Iacs-events(a)seas.harvard.edu https://lists.seas.harvard.edu/mailman/listinfo/iacs-events

9 years, 2 months

[Aspuru-Guzik group list] Special Seminar Doran Bennet - March 9th, 2 pm

by Rafa Gómez Bombarelli

Dear All, Doran Bennett will be visiting us next Monday and giving a special seminar at 2pm with the title *Light Harvesting in Plants: Energy Transfer and Capture in Photosystem II *(abstract attached). Doran's interests include "dynamics of open quantum systems, excitation energy transfer, electronic structure calculations, molecular dynamics, light harvesting, non-linear spectroscopy, electron transfer reactions, and quantum computing". He also has experience in computational materials discovery for industry, so I am sure this will be an interesting talk for most of the group. I also attach his schedule in case someone is interested in squeezing a meeting with him. All the best Rafa

9 years, 2 months

[Aspuru-Guzik group list] [qip] Friday the 6th

by Edward Farhi

Hi Quanta We will meet tomorrow at 11:00 in 6-310 and Xiaodi Wu will tell us about what he has been doing. 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

9 years, 2 months

[Aspuru-Guzik group list] AAG update

by Aspuru Lab Email

Dear group, As mentioned during the group meeting last Thursday, the phase 1 office move has been delayed for 3 weeks due to minor construction issues. More on that in a week or so. In addition, the deadline for the computer recycle drive is next Friday. Please, let's get this done so Kai can have an easy go at it. For PDs and graduate students who recently completed travel, I need your receipts before 11am tomorrow. Finally, during this week, our office door will be locked. Unless it's an absolute emergency, please avoid any unnecessary interruptions. Cynthia and I need time to get caught up after a crazy snow-filled and schedule interrupted February. Thanks, Marlon G. Cummings

9 years, 2 months

[Aspuru-Guzik group list] Excitonics Seminar: Felix Castellano, Tues. Mar 10, 4:30 PM

by Catherine M Bourgeois

PLEASE POST AND FORWARD TO YOUR GROUPS - Thanks! CENTER FOR EXCITONICS Seminar Series http://www.rle.mit.edu/excitonics/events/833/ Unusual Solar Photoconversion: Sensitized Triplet Fusion March 10, 2015 at 4:30 PM/ RLE Haus 36-428 Felix Castellano Department of Chemistry, North Carolina State University [castellano_02] abstract: One focus of our research program involves the study of sensitized triplet fusion (TF) in solution using highly photostable metal-organic chromophores in conjunction with energetically appropriate organic molecules with large singlet-triplet gaps. Selective excitation of the long-wavelength absorbing sensitizer efficiently generates long-lived triplet states that serve as energy transfer donors. In the presence of appropriate molecular acceptors, diffusion controlled triplet-triplet energy transfer takes place, producing the excited triplet state of the acceptor while regenerating the ground state of the sensitizer. When sufficient numbers of the sensitized triplets are produced, TTA takes place which results in either frequency upconverted light or the formation of desired chemical products. Various combinations of donor and acceptor have been explored and data will be presented on a number of these systems spanning light conversions ranging from the near-visible to the near-IR. This presentation will also describe many examples of upconversion phenomena realized in solid-state polymeric materials along with emerging classes of acceptor/annihilator chromophores and materials. TF processes will be shown to operate at high efficiencies with concomitant linear incident power density response, demonstrated in both theory and experiment using non-coherent photons. Upconversion-based photoaction observed in water splitting photoelectrochemical cells and operational photovoltaics will also be discussed. bio: Felix (Phil) Castellano earned a B.A. in Chemistry from Clark University in 1991 and a Ph.D. in Chemistry from Johns Hopkins University in 1996. Following an NIH Postdoctoral Fellowship at the University of Maryland, School of Medicine, he accepted a position as Assistant Professor at Bowling Green State University in 1998. He was promoted to Associate Professor in 2004, to Professor in 2006, and was appointed Director of the Center for Photochemical Sciences in 2011. In 2013, he moved his research program to North Carolina State University where he is currently a Professor in the Department of Chemistry. His current research focuses on metal-organic chromophore photophysics and energy transfer, photochemical upconversion phenomena, solar fuels photocatalysis, and excited state electron transfer processes.

9 years, 2 months

[Aspuru-Guzik group list] [qip] Fwd: Chez Pierre Seminar - Monday, 3/9/15

by Jeongwan Haah

Hi Quanta, I thought the following talk would be interesting to some of you. Best, Jeongwan > Begin forwarded message: > > From: Monica Wolf <mwolf(a)mit.edu> > To: "chezpierre(a)mit.edu" <chezpierre(a)mit.edu> > Subject: Chez Pierre Seminar - Monday, 3/9/15 > Date: March 5, 2015 at 10:06:30 AM EST > > Hi Everyone, > > The next Chez Pierre Seminar will be held Monday, March 9, 2015, at 12:00 noon in the MIT Duboc Room, 4-331. Pizza and soda will be available prior to the talks at 11:45am. > > Pankaj Mehta – Boston University > > “Deep Learning and the Variational Renormalization Group” > > Deep learning is a broad set of techniques that uses multiple layers of representation to automatically learn relevant features directly from structured data. Recently, such techniques have yielded record-breaking results on a diverse set of difficult machine learning tasks in computer vision, speech recognition, and natural language processing. In this talk, I will give a "gentle" introduction to Deep Learning and show that deep learning is intimately related to one of the most important and successful techniques in theoretical physics, the renormalization group (RG). I will present an exact mapping from the variational renormalization group, first introduced by Kadanoff, and deep learning architectures based on Restricted Boltzmann Machines (RBMs) and illustrate these ideas using the nearest-neighbor Ising Model in one and two-dimensions. > > Date: 3/9/2015 > Talk: 12:00pm > Room: 4-331, Duboc Room > Lunch: 11:45am (As always remember to dispose of your plates and cups in the trash containers when you leave the Duboc Room, thanks!) > Host: Senthil Todadri > > Chez Pierre seminars are usually scheduled for Mondays at noon in the MIT Duboc Room, 4-331. Seminar speakers, titles and abstracts will be posted on the Chez Pierre website at: http://web.mit.edu/physics/cmt/chezp.html <http://web.mit.edu/physics/cmt/chezp.html> . > > Upcoming Chez Pierre Seminars: > > March 16, 2015 – Luz Martinez-Miranda, University of Maryland > March 23, 2015 – No Seminar – Spring Break > April 6, 2015 – Jak Chakhalian, University of Arkansas > April 13, 2015 – TBA > April 20, 2015 – No Seminar – Patriot’s Day Holiday > April 27, 2015 – David Hsieh, California Institute of Technology > May 4, 2015 – TBA > May 11, 2015 – Peter Abbamonte - University of Illinois at Urbana-Champaign > > > Enjoy your day, > > Monica > Monica Wolf > Massachusetts Institute of Technology > 77 Massachusetts Ave, > Cambridge, MA 02139 > Administrative Assistant > Condensed Matter & Biophysics Experimental Physics > 13-2029 > 617-253-4829 > Fax: 617-258-6883 _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

9 years, 2 months

[Aspuru-Guzik group list] ITAMP lunch seminar: Colin Kennedy (3/6)

by Singh, Swati

*ITAMP Topical Lunch Discussion* Date: Friday, March 6th Time: 12:00-1:30 pm Pizza will be served. Location: B-106 @ Center for Astrophysics (60 Garden Street) Directions: after entering the lobby of the CfA, turn right to enter the hallway of the B building. In the hallway, turn right again, and B-106 is there. *Speaker: *Colin Kennedy (graduate student in Ketterle group) *Title:* Bose-Einstein Condensation in the 1/2 Flux Harper Hamiltonian *Abstract:* In condensed matter physics, two-dimensional electron gases subjected to strong magnetic fields have proved to be a powerful platform for investigating topological phases of matter such as the quantum Hall effect and the fractional quantum Hall effect. Recently, much progress has been made in simulating such systems using ultracold neutral atoms utilizing Raman processes in bulk BEC's and Fermi gases and modulation techniques in optical lattices. We report on our work in realizing a system exhibiting arbitrarily high synthetic magnetic fields in optical lattices and in achieving Bose-Einstein condensation in a model with effective magnetic fields of 1/2 flux per plaquette. We study how coherence emerges and decays in our weakly interacting effective Hamiltonian with preference given to finding an adiabatic pathway for adding strong interactions. Our work serves as an important starting point for practical approaches to investigate the quantum Hall effect, the quantum spin Hall effect, Weyl points, and other exotic states of matter in optical lattices. -- Dr. Swati Singh Institute for Theoretical Atomic, Molecular, and Optical Physics (ITAMP), Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, MS-14, Cambridge, MA 02138 https://www.cfa.harvard.edu/~ssingh/

9 years, 2 months

[Aspuru-Guzik group list] [Aspuru-meetings-list] Group Meeting, Mar. 5, 2:30pm

by Jennifer Wei

Hi Everyone, Tomorrow Changwon will be giving us group meeting. Please see below for the title and abstract of his talk. Cheers, Jennifer ------------------------------- Title: Molecular Mining for Grid-Scale Redox Flow Battery — A Fun-filled Journey for the Discovery of Unknown Quinone Molecules How do we store global renewable energy when there isn't blowing wind or shining sun? Our research team is developing a special type of battery called aqueous redox flow battery. This is promising for storing vastly large amounts of energy because energy is stored in liquids that can be pumped into big holding tanks which are environmentally friendly and very inexpensive. This talk will discuss our molecular mining and high-throughput process screening to rapidly predict the key functionalities of candidate molecules called quinones for such flow battery. Our computational design and discovery frameworks operate by reducing the huge search space to explore and guide processes. In addition, this talk will go over our successful strategies and discuss what we are actively doing now, as well as future work in advanced all-organic molecule based flow batteries. _______________________________________________ Aspuru-meetings-list mailing list Aspuru-meetings-list(a)lists.fas.harvard.edu https://lists.fas.harvard.edu/mailman/listinfo/aspuru-meetings-list

9 years, 2 months

[Aspuru-Guzik group list] TODAY at 4:00 PM! Vladimir Shalaev- HQOC/ITAMP Joint Quantum Sciences Seminar

by Coleman, Karl

HQOC/ITAMP Joint Quantum Sciences Seminar Wednesday, March 4, 2015 4:00 PM, Jefferson 250 Vladimir Shalaev – Purdue University Merging Metamaterials with Quantum Photonics Over the past decade, one of the major focuses for the area of nanophotonics has been on developing a new class of “plasmonic” structures and “metamaterials” as potential building blocks for advanced optical technologies, including data processing, exchange and storage; a new generation of cheap, enhanced-sensitivity sensors; nanoscale-resolution imaging techniques; new concepts for energy conversion including improved solar cells, as well as novel types of light sources. Designing plasmonic metamaterials with versatile properties that can be tailored to fit almost any practical need promises a range of potential breakthroughs. However, to enable these new technologies based on plasmonics, grand limitations associated with the use of metals as constituent materials must be overcome. In the structures demonstrated so far, too much light is absorbed in the metals (such as silver and gold) commonly used in plasmonic metamaterials. The fabrication and integration of metal nanostructures with existing semiconductor technology is challenging, and the materials need to be more precisely tuned so that they possess the proper optical properties to enable the required functionality. Our recent research aims at developing new designs and plasmonic materials (other than the metals used so far) that will form the basis for future low-loss, durable, CMOS-compatible devices that could enable full-scale development of the plasmonic and metamaterial technologies. Can these recently developed plasmonic structures and metamaterials based on new material platforms help in unfolding the potential of quantum photonics? We report on our first efforts in that direction. Alex High, 10-Minute Speaker Visible Frequency Hyperbolic Metasurfaces Postdoc Presentation begins at 4:00 PM Refreshments are served from 4:10-4:30 PM Guest Presentation begins at 4:30 PM Karl Coleman HQOC Laboratory Administrator Faculty Assistant to Profs. Greiner and Lukin Harvard University Department of Physics 17 Oxford Street Cambridge, MA 02138 P: (617) 496-2544 F: (617) 496-2545

9 years, 2 months

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aspuru-list March 2015