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SUNMONTUEWEDTHUFRISAT
Events for April 20, 2011
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Meet USC: Admission Presentation, Campus Tour, & Engineering TalkWed, Apr 20, 2011
Viterbi School of Engineering Undergraduate Admission
Receptions & Special Events
This half day program is designed for prospective freshmen and family members. Meet USC includes an information session on the University and the Admission process; a student led walking tour of campus and a meeting with us in the Viterbi School. Meet USC is designed to answer all of your questions about USC, the application process and financial aid.Reservations are required for Meet USC. This program occurs twice, once at 8:30 a.m. and again at 12:30 p.m. Please visit http://usconnect.usc.edu/ to check availability and make an appointment. Be sure to list an Engineering major as your "intended major" on the webform!
Location: USC Admission Center
Audiences: Everyone Is Invited
Contact: Viterbi Admission
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EE-Electrophysics Seminar
Wed, Apr 20, 2011 @ 10:00 AM - 11:00 AM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Liangbing Hu, Department of Materials Science and Engineering, Stanford University
Talk Title: Nanostructured Energy Devices: Manipulating Electrons, Photons and Ions
Abstract: Lowering the cost and improving the performance of devices are essential for making renewable energy feasible for everyday applications. In this talk, I will focus on discussing how abundant materials such as paper, silicon and copper can be engineered to create one dimensional nanomaterial networks (Nano-Nets) which allow us to manipulate fundamental particles in these energy devices to ultimately obtain remarkable performance. Conductive Nano-Nets using carbon nanotubes, silver nanowires and copper nanofibers for transparent electrodes in solar cells, silicon Nano-Nets for high performance Li-ion battery anodes, and conductive paper and textiles for ultracapacitors and microbial fuel cells will be discussed in detail.
Biography: Liangbing Hu received his B.S. in applied physics from the University of Science and Technology of China (USTC) in 2002. He did his Ph.D. in experimental physics under Prof. George Gruner at UCLA, focusing on carbon nanotube based nanoelectronics. He studied extensively the charge transport in carbon nanotube thin films with randomly distributed energy barriers and its dependence on geometry (nanotube length, density et al.) and energy (frequency, temperature and field). He also explored the device applications of such random networks in field effect transistors, sensors and optoelectronic devices. In 2006, he joined Unidym as a co-founding scientist. At Unidym, Liangbingâs role was the development of roll-to-roll printed carbon nanotube transparent electrodes and device integrations into touch screens, LCDs, flexible OLEDs and solar cells. Currently, Liangbing is a postdoctoral research fellow at Stanford University in Prof. Yi Cuiâs lab where he is working on various energy devices based on nanomaterials and nanostructures including Li-ion batteries, ultracapacitors and microbial fuel cells. He has ~ 50 journal publications in nanomaterials, nanoelectronics, printed electronics and energy devices.
Host: EE-Electrophysics
More Info: http://ee.usc.edu/news/seminars/eepLocation: Hughes Aircraft Electrical Engineering Center (EEB) - 248
Audiences: Everyone Is Invited
Contact: Marilyn Poplawski
Event Link: http://ee.usc.edu/news/seminars/eep
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AME Department Seminar
Wed, Apr 20, 2011 @ 03:30 PM - 04:30 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Sandro Gomez , Professor, Yale University
Talk Title: Highly Turbulent Strained Premixed Flames in the Distributed Reaction Regime
Abstract: Turbulent lean-to-stoichiometric premixed flames were experimentally studied in a counterflow configuration at turbulent Reynolds numbers on the order of one thousand. The primary objective is to examine conditions of departure from the flamelet regime and analyze the turbulent premixed flame structure under conditions in which disrupted and locally-extinguished flame fronts are expected.
A turbulent stream of fresh premixed reactants was opposed to a second stream of hot products of combustion. By varying temperature and composition of the combustion product stream, the ârealitiesâ of practical flames, such as heat losses and composition stratification, could be studied systematically in a well-defined system. These effects are not accounted for by the commonly used Borghi diagram of regimes of turbulent premixed combustion. Diagnostic techniques included PIV and simultaneous CO/OH-LIF to probe the structure of the oxidation layer.
It was found that the boundary between the flamelet regime and the distributed reaction zone was lowered significantly to turbulent Karlovitz numbers, Kat, of unity order. The oxidation layer was found to be sensitive to the turbulence intensity and the hot product composition. In fact, the quenching of the oxidation layer, that is not currently accounted for in turbulent combustion models, appeared to be a critical element of departure from the flamelet regime.
The interpretation of the experimental results was aided by ancillary numerical calculations of strained laminar premixed flames that showed two distinct extinction modes, an abrupt one and a smooth one, the latter being favored by an excess of oxidizing species in the combustion product stream.
The highly turbulent opposed jet system is shown to offer several advantages by comparison with the more common jet flames and is proposed as a benchmark for turbulent combustion studies.
Host: Prof. P. Ronney
More Info: http://ame-www.usc.edu/seminars/index.shtml#upcomingLocation: Seaver Science Library (SSL) - 150
Audiences: Everyone Is Invited
Contact: April Mundy
Event Link: http://ame-www.usc.edu/seminars/index.shtml#upcoming
