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Poster

Turning Up Learning in Brazil, at Turning Technology User Conference: Aarhus, Denmark, Aarhus University (Aarhus, Denmark), Tuesday, June 19, 2012:
talk_1952.pdf
Peer Instruction (PI) is a teaching method that leverages the power of cutting-edge learning technologies, such as clickers, to transform learning. The centerpiece of Peer Instruction is the ConcepTest, a short interactive question that helps uncover student misconceptions. “Turn to your neighbor” is the classic catch-phrase of PI methodology, whereby teachers encourage students to think about a question, vote on their answer, and then turn to their neighbor to engage, rather than sitting passively in a lecture. In this presentation, we examine two big, open questions frequently posed by... Read more about Turning Up Learning in Brazil
Femtosecond laser doping of TiO2 for photocatalysis, at Gordon Research Conference on Renewable Energy: Solar Fuels (Barga, Italy), Wednesday, May 16, 2012:
talk_1945.pdf
We present a novel method for femtosecond-laser doping of titanium dioxide (TiO2) for above bandgap absorptance by irradiating titanium metal in the presence of oxygen and dopants. With a bandgap of 3.2 eV for the anatase crystalline phase, TiO2 most strongly absorbs in the UV range (λ < 387 nm). However, doping with metals and nitrogen has been shown to create intermediate states in the bandgap. Using femtosecond laser doping techniques on titanium in a gaseous environment, we produce laser-induced periodic surface structures. Altering the gas composition and pressure does not change the... Read more about Femtosecond laser doping of TiO2 for photocatalysis
Knowing as the Stage for Doing: Developing Professors’ Pedagogical Knowledge, Attitudes, Practice, and Dissemination During Cross-­‐national Faculty Development Programs, at American Education Research Association Annual Meeting (Vancouver, BC, Canada), Saturday, April 14, 2012:
talk_1878.pdf
This poster will present the findings of a case study research project designed around an innovative approach to faculty development in Latin America and the Caribbean. The project trained over 75 professors from research universities in Chile,Costa Rica, and the Dominican Republic. The program currently measures four dimensions of pedagogical change: knowledge, attitudes, practice and dissemination. We will solicit feedback on our faculty development and program assessment model so that we may further improve our ability to potentiate pedagogical change in Latin American higher education and... Read more about Knowing as the Stage for Doing: Developing Professors’ Pedagogical Knowledge, Attitudes, Practice, and Dissemination During Cross-­‐national Faculty Development Programs
Femtosecond laser doping of TiO2 for solar harvesting, at Photonics West (San Fransisco, CA), Tuesday, January 24, 2012:
talk_1915.pdf
We present a novel method for femtosecond-laser doping of titanium dioxide (TiO2) for above bandgap absorptance by irradiating titanium metal in the presence of oxygen and dopants. With a bandgap of 3.2 eV for the anatase crystalline phase, TiO2 most strongly absorbs in the UV range (λ < 387 nm). However, doping with metals and nitrogen has been shown to create intermediate states in the bandgap. Using femtosecond laser doping techniques on titanium in a gaseous environment, we produce laser-induced periodic surface structures. Altering the gas composition and pressure does not change the... Read more about Femtosecond laser doping of TiO2 for solar harvesting
TiO2 as a material platform for all-optical logic, at Horizons of Nanophotonics and Nanoelectronics, Harvard University (Cambridge, MA), Monday, December 20, 2010:
talk_1703.pdf
As the volume of internet traffic worldwide explodes and processing demands continually increase, solutions are required to overcome the inherent speed limitations of electronic devices. In particular, there is a need for all-optical devices, with their higher bandwidth and transmission rate, to replace various electronic functions such as routing data between processors and logic operations. We identified TiO2 as a promising yet unexplored material platform for ultrafast, on-chip nonlinear optical devices. TiO2 has a high nonlinear index of refraction (n2), enabling such operations as all-... Read more about TiO2 as a material platform for all-optical logic

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