aspuru-list November 2013

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34 participants
83 discussions

[Aspuru-Guzik group list] Exctionics Seminar - Leonid Levitov - Thurs. Nov 14, 3 pm, RM 6-233

by Catherine M Bourgeois

Please post and forward to your group. _________________________________ Center for Excitonics Seminar Series Thursday, Nov 14, 2013 3:00 - 4:00 PM Amdur Conference Room: 6-233 * Energy Waves and Plasmons in Graphene Leonid Levitov, Dept. Of Physics, MIT Abstract: Materials in which heat and entropy can be transmitted by directed ballistic pulses, are of keen interest and importance both scientifically and technologically. Scientifically, they enable fundamentally new unconventional modes of energy transfer which rely on collective wave-like behavior akin to light or sound propagation. Technologically, directed ballistic heat pulses can trigger new approaches to energy transduction in solids. Collective wave-like energy transfer has been predicted for relativistic matter under extreme conditions (cosmic sound). This talk will discuss an electronic analog of cosmic sound that can be realized in the thermal electron-hole plasma in graphene. The new behavior originates from rapid exchange of energy and momentum in particle collisions leading to energy propagation as a collective weakly damped oscillation. Due to the electronic nature of this mode, the estimated propagation velocity can be orders of magnitude faster than that for previously studied phonon mechanisms. The energy mode is uncharged at charge neutrality, but becomes coupled to charge dynamics upon doping. This coupling, combined with the techniques developed recently to study plasmons in nanosystems such as carbon nanotubes and graphene, can be employed for an all-electric excitation and detection of energy transport. This talk will also briefly discuss several other topics of interest concerning plasmons, hot carriers and excitons in atomically thin layered materials: multiple carrier generation in the photo-excitation cascade, plasmon generation in the presence of a DC current (electronic flute), exciton Berry's phase, topological currents and anomalous Hall transport. Bio Leonid Levitov received his M.A. in Physics cum laude at Moscow Physical-Technical Institute in 1985 and his Ph.D. in Theoretical Physics at Landau Institute in 1989. He pioneered in the theory of quasicrystals, orderly materials with non-crystallographic symmetries, discovered in 1985 and in the theory of quantum noise in coherent electron transport. He also developed theory of electronic properties of graphene, in particular, new device concepts based on common-path interference and Klein tunneling, and theory of spin Hall effect which explained the giant nonlocality observed in graphene. He has published over a 100 refereed papers and reviews in the fields of quantum transport, solid-state quantum computing, cold atoms, quantum noise, growth and pattern formation. Currently, he is a Professor of Physics at MIT and leads the Condensed Matter Theory Research Group. The Center for Excitonics is an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science and Office of Basic Energy Sciences Light refreshments will be served. Please note location: Amdur Conference Room: 6-233 *

10 years, 5 months

[Aspuru-Guzik group list] Fwd: residence for 4 days?

by Marlon Cummings

Team! Can any of you provide some assistance for our incoming postdoc Borja? Or, perhaps and leads? He arrives soon. Please contact Borja directly. Marlon. ---------------- Marlon G. Cummings Lab Manager, Aspuru-Guzik Group Mallinckrodt M112 Department of Chemistry and Chemical Biology Harvard University 12 Oxford Street Cambridge, MA 02138 617-496-9964 617-496-9411 (fax) http://aspuru.chem.harvard.edu/ ---------- Forwarded message ---------- From: Borja <borplg(a)gmail.com> Date: Tue, Nov 12, 2013 at 12:30 PM Subject: residence for 4 days? To: Marlon Cummings <aspuru.labmanager(a)gmail.com> Hi Marlon, I'm traveling to Boston on the 26th, but I'm not able to check-in in the apartment until the 30th of november. Does the university have any residence where I can stay at during those days? Thanks in advance, Borja PS: Don't hate me for all the annoying questions I've made during these months! :-)

10 years, 5 months

[Aspuru-Guzik group list] CPUs Cluster Databases

by Salvatore Mandrà

Dear group, yesterday I compiled two small databases with the principal information (e.g. number of cpus, installed RAM, ..) of all machines in our two clusters (eldorado and the new odyssey2). Now, it should be easy to identify which are the monster machines with the largest number of cpus and the largest amount of RAM! ;-) Databases can be found in our wiki at the following pages: https://aspuru.wikidot.com/computation:eldorado https://aspuru.wikidot.com/computation:odyssey2 Feel free to change the databases if I missed something (original databases are in attachment). Best, Salvatore

10 years, 5 months

[Aspuru-Guzik group list] Flaskbox Update

by Trepte, Kai

Hi Everyone: We have made the transition to the new updated multi-processing routines and it looks like everything is running smoothly. We have a request - could you all delete your "Flaskbox" directory, not the "Flaskbox_Output" directory as it will clean up the system; our policy of NEVER reading or deleting files prevents us from doing this for you. Our goal for this week is to have a "command line" tool available which will let you push files from any system into Flaskbox. Additional instructions will follow on how you can access this tool. In the following week we hope to pilot automated parsing which many of you have asked for. As always, if you have any comments of suggestions for improvements please let us know. With Respect, Team Flaskbox

10 years, 5 months

[Aspuru-Guzik group list] pdf of slurm vs lsf commands

by Joseph Goodknight

Possibly useful? Left some copies next to the big office printer. -Joey

10 years, 5 months

[Aspuru-Guzik group list] Football

by Xavier Andrade

Hi all, In case you are interested in some football (soccer), there is a group that plays at Hemenway Gym every Monday (7:00 PM) and Saturday (11:00 AM). Novice and experienced players are welcome. Xavier

10 years, 5 months

[Aspuru-Guzik group list] [Aspuru-meetings-list] group meeting now!

by Ryan Babbush

Jacob Biamonte is presenting group meeting on Chemical Reaction Networks in the Division room right now! -- Ryan Babbush | PhD Student in Physics (949) 331-3943 | babbush(a)fas.harvard.edu Harvard University | Aspuru-Guzik Group 12 Oxford Street | Cambridge, MA 02138 _______________________________________________ Aspuru-meetings-list mailing list Aspuru-meetings-list(a)lists.fas.harvard.edu https://lists.fas.harvard.edu/mailman/listinfo/aspuru-meetings-list

10 years, 5 months

[Aspuru-Guzik group list] Divestment Forum today

by Sawaya, Nicolas

I thought this forum might interest people in the group, especially those who work on clean energy. <<<>>> People on campus and across the nation are talking about Fossil Fuel Divestment…. President Faust and others oppose it, but many Harvard students, faculty, and alumni feel otherwise On Friday November 8th @ 3:30pm in Sever Hall 113 come hear Harvard faculty and students discuss the PROS and CONS of divestment The panelists will include four Harvard professors: Rebecca Henderson (HBS) Dan Schrag (FAS, Geology) John Coates (HLS) James Engell (FAS, English) & Prominent climate activist and Harvard Divinity School student, Tim DeChristopher The forum will be moderated by the Harvard Undergraduate Council President, Tara Raghuveer. Come with questions and prepare for debate! Sponsored by Divest Harvard<http://divestharvard.com/> & Perspective Magazine<http://www.perspy.com/> [cid:E9BE1164-0E24-46CB-AD20-F4D2377CB720@client.fas.harvard.edu]

10 years, 5 months

[Aspuru-Guzik group list] OpenCL on aspuru_guzik nodes

by Christoph Kreisbeck

Dear group, Now we have the Intel and AMD OpenCL toolkit installed on all aspuru_guzik nodes.OpenCL is cross-platform, parallel programming language. That is OpenCL code runs on CPUs, GPUs or accelerators such as the XeonPhi. For more details about OpenCL see http://www.khronos.org/opencl/ I created a brief entry in aspuru.wikidot.com on how to compile and run OpenCL jobs. Best, Christoph

10 years, 5 months

[Aspuru-Guzik group list] Flaskbox!

by Alan Aspuru-Guzik

Dear group members, Please re-share your folders with Flaskbox. Kai and the team are ready to ingest your files. We need the sharing so that the system experiences load and that we can test awesome new features for you (one is a surprise for next week!) Surprise me, flood share(a)flaskbox.com with folder requests, Best, Alan Alán Aspuru-Guzik | Professor of Chemistry and Chemical Biology Harvard University | 12 Oxford Street, Room M113 | Cambridge, MA 02138 (617)-384-8188 | http://aspuru.chem.harvard.edu | http://about.me/aspuru

10 years, 5 months

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aspuru-list November 2013