aspuru-list October 2009

aspuru-list@lists.fas.harvard.edu

25 participants
72 discussions

[Aspuru-Guzik group list] Group meeting 1:30 in Converse204

by Alejandro Perdomo

Dear group, Tomorrow we will have a guest speaker, Frank Koppens, who is doing a joint post-doc with Honkung Park and Michael Lukin. Please see the title and abstract of his talk below. See you all at 1:30pm in Converse 204. *Near-field Electrical Detection of Optical Plasmons and Single Plasmon Sources* Photonic circuits based on surface plasmons (SPs) are promising for the integration with nanoscale electronic circuits because they can be miniaturized below the optical wavelength scale. Moreover, the strong field confinement of SPs can be used to significantly modify the emission properties of individual emitters, which allows for single light quanta to be controlled. Such control has potential applications such as efficient photon collection, single-photon switching and long-range optical coupling of quantum bits. However, there is a general tradeoff between the localization of an SP and the efficiency with which it can be detected with conventional far-field optics. To address this issue, we integrated a plasmonic waveguide with a nanoscale transistor, and demonstrated all-electrical SP detection in the near-field. Moreover, we show that the emission from a single-photon emitter can be directed very efficiently into SPs that propagate along a metallic wire. We used this strong coupling to perform all-electrical detection of the plasmon emission from an individual colloidal quantum. These results enable new on-chip optical sensing applications and fulfill a key requirement for “dark” electroplasmonic nanocircuits, in which SPs can be generated, manipulated, and detected without involving far-field radiation. -- Alejandro Perdomo Ph.D. Candidate in Chemical Physics. Harvard University 12 Oxford St #482, Cambridge, MA, 02138. perdomo(a)fas.harvard.edu

14 years, 6 months

[Aspuru-Guzik group list] Fwd: "digital social science fair", Wed, 4 November, 2 - 5 pm, CGIS South 030 and concourse

by Anna B. Shin

Dear Group, This email may be of interest to those who are teaching. 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 617.495.9676 lab http://aspuru.chem.harvard.edu/ ---------- Forwarded message ---------- From: Tony Shaw <shaw(a)chemistry.harvard.edu> Date: Tue, Oct 20, 2009 at 10:54 AM Subject: "digital social science fair", Wed, 4 November, 2 - 5 pm, CGIS South 030 and concourse To: faculty(a)chemistry.harvard.edu, staff(a)chemistry.harvard.edu FYI ========================== Most of the exhibitors are general to FAS (or the university as a whole), so people outside of social science might find the information useful. The event is geared more toward faculty and staff, as well as to other researchers or instructors (grad students and postdocs) than it is toward undergraduate students (undergrads are welcome to attend, but may not find the event particularly relevant). Dear Everyone, I write to announce an important upcoming event, the "Digital Social Science Fair" jointly hosted by the Academic Technology Group and the Division of Social Science. Please distribute this invitation broadly to your faculty *and* staff (including lecturers, grad students, and postdocs), and encourage everyone to stop by. This is a chance to learn about the wealth of digital resources, archives, innovative technology, and IT and media services available to university members for teaching and research support. The fair will run from 2 - 5 pm on Wednesday, November 4th, in the CGIS South Bldg (1730 Cambridge St) public gathering room and concourse (downstairs), and people can stop by and wander through at any point during that time window. Undergrads are welcome, but the fair is geared toward faculty (and other researchers and educators) and staff more than to students. (This event is *not* open to the public.) There will be exhibits and presenters from the Libraries, the Bok Center, Instructional Media Services, the Division of Continuing Education, FAS IT, the Center for Workplace Development, the Institute of Quantitative Social Science, the Collection of Historical Scientific Instruments, the Peabody Museum, the Office for Scholarly Communication, the Office for Sponsored Research, Harvard Catalyst, and several others! Jennifer M. Shephard Special Initiatives Program Manager Division of Social Science University Hall 3 South Harvard University Cambridge MA 02138 jmsheph(a)fas.harvard.edu isites.harvard.edu/socialsciencedivision 1.617.495.7906

14 years, 6 months

[Aspuru-Guzik group list] Save the Date - "Semana México" / 26 - 30 of October 2009

by Roberto Olivares-Amaya

H a r v a r d U n i v e r s i t y M e x i c a n A s s o c i a t i o n www.huma.org.mx ___________________________ Semana México "Semana México" is a multidisciplinary event organized by the Harvard University Mexican Association in collaboration with the Business School, the Kennedy School of Government and the Graduate School of Arts and Science at Harvard. *Semana México* is an effort of all the Mexicans affiliated to Harvard, to show a more holistic view of what happens in our country in the areas of education, economic and social development, arts and culture, politics and academic nexus. All lectures will be from 6-8pm Venue - TBA Program *MONDAY 26**th**OCT.** * Inauguration Ceremony - HUMA President Jesús M. Acuña Méndez Political Development in México - Hon. Emilio González Márquez, Governor of Jalisco. - Hon. Amalia García Medina, Governor of Zacatecas. Moderator: Jesús M. Acuña *TUESDAY 27**th **OCT.** * A perspective of Cultural Projects: the experience of the Mexican Center for Music and Sonic Arts.¨ - Rodrigo Sigal Moderator: Edgar Barroso *WEDNESDAY 28**th **OCT.** * Regional and binational challenges - Mexico’s Ambassador Arturo Sarukhán - Dr. Fernando Estrada Sámano, Consul of Mexico at Boston - Jaime Bueno, Director of International Affairs, State of Coahuila. Moderator: Jorge I. Domínguez *THURDSAY 29**th **OCT.** * Mexico’s present economy: an alternative perspective for the future - Claudio X. González, Kimberly Clark Moderator: Fernando Lerdo de Tejada *FRIDAY 30**th**OCT.* Political Development in México - Hon. Juan Sabines, Governor of Chiapas Para mayor información, escribir a: info(a)huma.org.mx -- Harvard University Mexican Association www.huma.org.mx

14 years, 6 months

[Aspuru-Guzik group list] cookies!

by Leslie Vogt

Hi everyone, Please help yourself to chocolate chip walnut cookies by the coffee machine and in M111 =) Leslie -- Leslie Vogt Aspuru-Guzik Group Chemistry and Chemical Biology Harvard University

14 years, 6 months

[Aspuru-Guzik group list] ANNOUNCEMENT: Alan J. Heeger Seminar - October 20

by rtavilla＠rle.mit.edu

Center for Excitonics Seminar Series Announcement 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 The Center for Excitonics (http://www.rle.mit.edu/excitonics) invites you to join us at the next seminar of the Fall 2009 series. Please forward this information on to others who might be interested in attending this seminar. Title: "Plastic" Solar Cells: Self-Assembly of Bulk Heterojunction Nano-Materials by Spontaneous Phase Separation Presenter: Professor Alan J. Heeger Organization: University of California, Santa Barbara Department of Chemistry Date: October 20, 2009 Time: 3:00 - 4:00pm Place: 36-428 Refreshments: Yes URL: http://www.rle.mit.edu/excitonics/heeger-102009.html abstract Solar cells --- Power from the Sun --- can provide and must provide --- a significant contribution to our future energy needs. The challenge is clear; we must create the scientific foundation and the technology to enable fabrication of high efficiency solar cells at low cost. I will describe the discovery of ultrafast photoinduced electron transfer as the scientific foundation for the creation of a technology for low cost “plastic” solar cells. This initial charge separation occurs at a time scale two orders of magnitude faster than the first step in photo-synthesis in green plants. Charge collection at the electrodes is accomplished through self-assembly of bulk heterojunction (BHJ) nano-materials by spontaneous phase separation. Recent results include the achievement of 6% power conversion efficiency and the demonstration of quantum efficiencies approaching 100%: Each photon absorbed leads to a (positive and negative) pair of mobile charge carriers, and all the photo-generated charge carriers are collected at the electrodes. Higher efficiencies will come from improved harvesting of the photons from the solar spectrum using new semiconducting polymers designed and synthesized for use in “plastic” solar cells. We see a clear technology pathway to high efficiency “plastic” solar cells with lifetimes sufficient for a wide range of applications including portable electronics, semi-transparent solar cells for windows in homes and buildings, and rooftop installation. I will discuss lifetime issues and progress toward manufacturing plastic solar cells by printing/coating technology. I will demonstrate that the dream of low cost plastic solar cells is becoming reality. bio Widely known for his pioneering research in and the co-founding of the field of semiconducting and metallic polymers, Professor Heeger is also the recipient of numerous awards, including the Nobel Prize in Chemistry (2000), the Oliver E. Buckley Prize for Condensed Matter Physics, the Balzan Prize for the Science of New Materials, the Eni Italgas Prize for Energy and the Environment, the President’s Medal for Distinguished Achievement from the University of Pennsylvania, the Chancellor’s Medal from the University of California, Santa Barbara, and honorary doctorates from more than a dozen universities in the United States, Europe and Asia. He is a member of the National Academy of Science (USA), the National Academy of Engineering (USA) and a foreign member of the Korean Academy of Science. Prof. Heeger founded UNIAX Corporation in 1990; UNIAX was acquired by DuPont in 2000. Prof. Heeger is Chairman and Co-founder of CBrite Inc. in Santa Barbara. Barbara.

14 years, 6 months

[Aspuru-Guzik group list] thesis defense trip

by Man-Hong Yung

Dear all, I will be away for one week for having my thesis defense at Urbana-Champaign (the thesis committee includes Leggett, Kwiat, Schulten and Weissman). Wish me good luck! Regards, Man Hong

14 years, 6 months

[Aspuru-Guzik group list] Fwd: CLUSTER SPACE ISSUES.

by Alan Aspuru-Guzik

Dear group, Please begin using the partition below to alleviate space problems. See below. Alán Aspuru-Guzik | Assistant Professor Harvard University | Department of Chemistry and Chemical Biology 12 Oxford Street, Room M113 | Cambridge, MA 02138 (617)-384-8188 | http://aspuru.chem.harvard.edu ---------- Forwarded message ---------- From: Suvendra N. Dutta <suvendra_dutta(a)harvard.edu> Date: Fri, Oct 16, 2009 at 8:50 PM Subject: Re: CLUSTER SPACE ISSUES. To: Alan Aspuru-Guzik <aspuru(a)chemistry.harvard.edu> Cc: Jerry Lotto <lotto(a)harvard.edu> Ok Alan, This will take ~2 hours to percolate through the cluster, but parts of it should already have this: [root@iliadaccess02 ~]# df -h /n/aspuru_lab2/ Filesystem Size Used Avail Use% Mounted on helios:/root_vdm_6/aspuru_lab2/share_root 2.0T 2.7M 2.0T 1% /n/aspuru_lab2 All members of aspuru_lab group should have read/write access to it. Thanks. Suvendra. On 10/16/09 7:03 PM, "Alan Aspuru-Guzik" <aspuru(a)chemistry.harvard.edu> wrote: Dear Suvendra, A million thanks for your awesome help! It is really great. I really appreciate it :) Alan Alán Aspuru-Guzik | Assistant Professor Harvard University | Department of Chemistry and Chemical Biology 12 Oxford Street, Room M113 | Cambridge, MA 02138 (617)-384-8188 | http://aspuru.chem.harvard.edu On Fri, Oct 16, 2009 at 6:50 PM, Suvendra N. Dutta < suvendra_dutta(a)harvard.edu> wrote: Dear Alan, I am sorry you are having trouble with disk space on Odyssey. I made sure that you have access to the CDI funded storage. You should have space there. But lets just get rid of these problems. I will create a separate file system for you with 2TB (can be expanded in future) and mount it across the cluster. This will take a little bit of time. But it should be ready by later tonight. I'll put no quota limits on it to begin with so we don't run into those. It will exclusively for your group so no else is involved. Our storage is at $600/TB for 3 years, but you've been through thick and thin with us, so let me create the space first and then figure out what is already out there and being used later. That way your science can keep going. Thanks very much. Suvendra. On 10/16/09 6:35 PM, "Alan Aspuru-Guzik" <aspuru(a)chemistry.harvard.edu> wrote: Dear Suvendra, Jerry. First of all, yes, indeed we will provide you with the graphics for your website. I will have Mark Watson prepare something for you. Much more importantly, there is a BIG ISSUE going on with space in Oddyssey: 1. We don't have an easy accounting of how much space we have, as there is no easy way of counting how much space do we use as a group. 2. Furthermore, after we did our own accounting, it seems we are not up to 1 TB, which the space that we have allocated. 3. The file system is right now practically full again. We had to stop computiing again. So the question is: What groups are we sharing that filesystem with, and if so, are they over their quota? 4. We are planning to move our less important data to the Thumber of the CDI GPU project. Is that Raided? If so what RAID level is it at? What would be very useful is a global space monitoring script that could tell hourly or so how much space each user is employing and how are we doing with our quota, and if others are sharing our partition, maybe moving one group to another partition might be a good idea? Looking forward to your feedback, and thank you as always :) Alan Alán Aspuru-Guzik | Assistant Professor Harvard University | Department of Chemistry and Chemical Biology 12 Oxford Street, Room M113 | Cambridge, MA 02138 (617)-384-8188 | http://aspuru.chem.harvard.edu

14 years, 6 months

[Aspuru-Guzik group list] Andrew Childs's visit

by Ivan Kassal

Dear group, Andrew Childs from U Waterloo will be visiting the group on Monday morning around 9. He deals with quantum algorithms, especially quantum simulation. Let me know if you'd like to meet with him, and I'll let you know when he shows up. Ivan

14 years, 6 months

[Aspuru-Guzik group list] Fwd: CLUSTER SPACE ISSUES.

by Alan Aspuru-Guzik

Dear all FYI new cluster space! Alan Aspuru-Guzik (Sent from my mobile phone and might contain typos. Thanks for understanding.) Begin forwarded message: > From: "Suvendra N. Dutta" <suvendra_dutta(a)harvard.edu> > Date: October 16, 2009 20:50:11 EDT > To: Alan Aspuru-Guzik <aspuru(a)chemistry.harvard.edu> > Cc: Jerry Lotto <lotto(a)harvard.edu> > Subject: Re: CLUSTER SPACE ISSUES. > > Ok Alan, > > This will take ~2 hours to percolate through the cluster, but parts > of it should already have this: > [root@iliadaccess02 ~]# df -h /n/aspuru_lab2/ > Filesystem Size Used Avail Use% Mounted on > helios:/root_vdm_6/aspuru_lab2/share_root > 2.0T 2.7M 2.0T 1% /n/aspuru_lab2 > > All members of aspuru_lab group should have read/write access to it. > > Thanks. > Suvendra. > > > On 10/16/09 7:03 PM, "Alan Aspuru-Guzik" > <aspuru(a)chemistry.harvard.edu> wrote: > > Dear Suvendra, > > A million thanks for your awesome help! It is really great. I really > appreciate it :) > > Alan > > AlÃ¡n Aspuru-Guzik | Assistant Professor > Harvard University | Department of Chemistry and Chemical Biology > 12 Oxford Street, Room M113 | Cambridge, MA 02138 > (617)-384-8188 | http://aspuru.chem.harvard.edu > > > > > On Fri, Oct 16, 2009 at 6:50 PM, Suvendra N. Dutta <suvendra_dutta(a)harvard.edu > > wrote: > Dear Alan, > > I am sorry you are having trouble with disk space on Odyssey. I made > sure that you have access to the CDI funded storage. You should have > space there. > > But lets just get rid of these problems. > > I will create a separate file system for you with 2TB (can be > expanded in future) and mount it across the cluster. This will take > a little bit of time. But it should be ready by later tonight. I'll > put no quota limits on it to begin with so we don't run into those. > It will exclusively for your group so no else is involved. > > Our storage is at $600/TB for 3 years, but you've been through thick > and thin with us, so let me create the space first and then figure > out what is already out there and being used later. > > That way your science can keep going. > > Thanks very much. > Suvendra. > > On 10/16/09 6:35 PM, "Alan Aspuru-Guzik" > <aspuru(a)chemistry.harvard.edu> wrote: > > Dear Suvendra, Jerry. > > First of all, yes, indeed we will provide you with the graphics for > your website. I will have Mark Watson prepare something for you. > > Much more importantly, there is a BIG ISSUE going on with space in > Oddyssey: > > 1. We don't have an easy accounting of how much space we have, as > there is no easy way of counting how much space do we use as a group. > 2. Furthermore, after we did our own accounting, it seems we are not > up to 1 TB, which the space that we have allocated. > 3. The file system is right now practically full again. We had to > stop computiing again. So the question is: What groups are we > sharing that filesystem with, and if so, are they over their quota? > 4. We are planning to move our less important data to the Thumber of > the CDI GPU project. Is that Raided? If so what RAID level is it at? > > What would be very useful is a global space monitoring script that > could tell hourly or so how much space each user is employing and > how are we doing with our quota, and if others are sharing our > partition, maybe moving one group to another partition might be a > good idea? > > Looking forward to your feedback, and thank you as always :) > > Alan > > > > > > AlÃ¡n Aspuru-Guzik | Assistant Professor > Harvard University | Department of Chemistry and Chemical Biology > 12 Oxford Street, Room M113 | Cambridge, MA 02138 > (617)-384-8188 | http://aspuru.chem.harvard.edu > > > > > >

14 years, 6 months

[Aspuru-Guzik group list] unlocked door Cv-004

by Semion Saikin

Guys, Yesterday morning and this morning the door in Cv-004 was unlocked. Please, check the lock position at evenings when you leave the office. There are "potentially-free" laptops in our room and in the connected Cv-002. Semion -- ******************************************** Semion K. Saikin, PhD Department of Chemistry and Chemical Biology Harvard University 12 Oxford Street, Cambridge, MA 02138 email: saykin(a)fas.harvard.edu phone: (619)212-6649 ********************************************

14 years, 6 months

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aspuru-list October 2009