aspuru-list April 2016

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25 participants
54 discussions

[Aspuru-Guzik Group List] FW: Excitonics Seminar: Delia Milliron - TOMORROW April 5 - 4:30pm in 34-401A

by Catherine M Bourgeois

PLEASE NOTE Room number - 34-401A Please post and forward to your groups: CENTER FOR EXCITONICS SEMINAR SERIES presents: Plasmonic metal oxide nanocrystals April 5, 2016 at 4:30pm/34-401A Delia Milliron Department of Chemical Engineering, The University of Texas at Austin [Delia-Milliron.01] Degenerately doped metal oxide semiconductors, like ITO, exhibit plasmonic resonance at near and mid-infrared wavelengths tunable by varying their composition. Nanocrystals of many such materials have now been synthesized and applications are emerging that leverage the responsiveness of their localized surface plasmon resonance (LSPR) to electronic charging and discharging. For example, we are developing a new class of electrochromic glass that can dynamically control heat loads and daylighting in buildings to save energy and enhance comfort of building occupants. Further applications of these novel plasmonic nanocrystals will hinge, in part, on their ability to concentrate infrared light into nanoscale volumes and to enhance electronic and vibrational state transitions via associated field enhancement effects. Through simulations, we have predicted high field enhancement factors exceeding 300x for faceted nanocrystals. Experimentally, we can assess the potential of plasmonic oxide nanocrystals for field enhancement by observing the homogeneous LSPR linewidth, which is inversely related to the dephasing time. We have sought to distinguish this intrinsic linewidth from the heterogeneous broadening that is always present for colloidal nanoparticles. Measuring LSPR spectra of individual nanocrystals by tip-enhanced synchrotron FTIR spectroscopy we find single nanocrystals can have linewidths less than half of the corresponding ensembles. Thus, the dephasing times are long and plasmonic oxide nanocrystals have great potential for diverse applications in energy. I will conclude with an outlook on how materials chemistry enables the tuning of LSPR properties by design. Delia J. Milliron is an Associate Professor in the McKetta Department of Chemical Engineering at the University of Texas at Austin and a Fellow of the Henry Beckman Professorship. She also serves as an Associate Editor for the journal Nano Letters. Dr. Milliron received her PhD in Chemistry from the University of California, Berkeley, in 2004. From 2004 to 2008 she worked for IBM's research division, initially as a postdoctoral researcher and subsequently as a member of the research staff. In 2008, she joined the research staff at the Molecular Foundry, Lawrence Berkeley National Lab, where she served as the Director of the Inorganic Nanostructures Facility and later as the Deputy Director. Dr. Milliron's awards include a Sloan Research Fellowship, a DOE Early Career award and a Resonate Award from Caltech's Resnick Institute. Her research is motivated by the potential for nanomaterials to introduce new functionality to and reduce manufacturing costs of energy technologies. Her group's activities span from the fundamental chemistry and assembly pathways of nanomaterials to device integration and characterization. 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

8 years, 2 months

[Aspuru-Guzik Group List] Ksenia Bravaya Theochem visit, Apr. 5th

by Jennifer Wei

Hi Everyone, Professor Ksenia Bravaya <http://people.bu.edu/kbravgrp/research/index.html> of BU is coming on April 5th to as part of the Theochem series. Research in her group spans electronic structure methods development Autoionizing Resonance States, Equation-of-Motion Coupled Cluster methods, and applications of these methods to biochromophores, fluorescent proteins, and cytochromes. Follow the link for a more detailed description of her research. She will only be at Harvard for the afternoon and dinner on Tues. Apr. 5th. Please let me know if you are interested in meeting with her in the afternoon or joining us for dinner. Prof. Bravaya's Theochem talk will be on Wed., April 6th at 4pm at MIT Building 4, Room 163. Abstract to follow Cheers, Jennifer

8 years, 2 months

[Aspuru-Guzik Group List] Special group meeting on Friday, April 1st: Postdoc candidate Jonathan Olson

by Salvatore Mandrà

Hi Everyone, This Friday (April 1st), the Postdoc candidate Jonathan Olson from Louisiana State University (Physics) will give a job interview to our group. The talk will be in the Division Room from 2pm to 3.30pm (the schedule is in attachment). Follows the abstract of the talk: ---- Title: The Ultimate Limits of Measurement --- Metrology from Single Photons Abstract: Metrology deals with the task of measuring unknown quantities and determining how certain our measurements can be about the “true” value of a variable. Optical interferometry has been an incredibly useful resource for making precision measurements about the properties of many systems, recently culminating in the breakthrough discovery of gravity waves by the LIGO collaboration. In this talk, I will describe the evolution of quantum metrology, and give some examples of the way interferometers can exploit the quantum properties of light to make higher precision measurements than could ever be done in a classical world. Finally, I will describe my work in developing a new architecture -- inspired by Boson Sampling -- which hopes to make practical quantum sensors a reality. ---- Kind regards, Salvatore

8 years, 2 months

[Aspuru-Guzik Group List] Fwd: Origins Prize Lecture: Dr. Gerald Joyce (Scripps and Novartis), April 12, 2016

by Marlon Cummings

*Marlon G. CummingsLab Manager, Aspuru-Guzik GroupMallinckrodt M136Department of Chemistry and Chemical BiologyHarvard University12 Oxford StreetCambridge, MA 02138617-496-9964617-496-9411 (fax)http://aspuru.chem.harvard.edu/ <http://aspuru.chem.harvard.edu/>* ---------- Forwarded message ---------- From: Moreno, Kelly <kelly.moreno(a)cfa.harvard.edu> Date: Fri, Apr 1, 2016 at 11:18 AM Subject: Origins Prize Lecture: Dr. Gerald Joyce (Scripps and Novartis), April 12, 2016 To: Marlon Cummings <marloncummings(a)chemistry.harvard.edu>, Steve Kelley < stevekelley(a)fas.harvard.edu>, smanley <smanley(a)fas.harvard.edu>, Jamie Villanueva <jvillanueva(a)cfa.harvard.edu>, "Cappo, Sabinna" < scappo(a)fas.harvard.edu>, shillsgrove <shillsgrove(a)oeb.harvard.edu>, jdelaney <jdelaney(a)fas.harvard.edu>, "Legee, Amanda E" < alegee(a)fas.harvard.edu>, "T.J. Martin" <tjmartin(a)gmwgroup.harvard.edu>, breen <breen(a)molbio.mgh.harvard.edu>, Alexei Trifonov < alexei.trifonov(a)me.com>, lmccaig <lmccaig(a)fas.harvard.edu>, ebeirne < ebeirne(a)fas.harvard.edu>, zchen <zchen(a)eps.harvard.edu>, markovic < markovic(a)chemistry.harvard.edu>, "Kelley, Paul" <kelley(a)eps.harvard.edu>, Mail Delivery Subsystem <MAILER-DAEMON(a)mx0b-00171101.pphosted.com>, " engelbrecht(a)fas.harvard.edu" <engelbrecht(a)fas.harvard.edu>, May Huang < mhuang(a)fas.harvard.edu>, olivera <olivera(a)seas.harvard.edu>, FANNY NG < ng(a)molbio.mgh.harvard.edu>, sabinna <sabinna(a)eps.harvard.edu>, sjcarter < sjcarter(a)fas.harvard.edu> Hi All, I'm reaching out with the hope that you could spread the word about our very 1st Origins Prize Lecture on April 12th. We are honored to announce Dr. Gerald Joyce (Scripps Research Institute & Genomics Institute of the Novartis Research Foundation) as The Origins of Life Initiative's first annual Prize Lecturer. Dr. Joyce is one of this generation's leading thinkers and experimentalists in origins of life research and a member of the National Academy of Sciences. If you have a list serve to send to or a board to post to, it would be very much appreciated! (PDF attached) Thanks Kelly -- Kelly Moreno Coordinator of Academic Programs, Outreach and Events Harvard University Origins of Life Initiative 60 Garden Street, B-315 Cambridge, MA 02138 Office Telephone: 617-496-1451 Work Email: kelly.moreno(a)cfa.harvard.edu

8 years, 2 months

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aspuru-list April 2016