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At LEAP, nearly 300 Mount Holyoke students present about their internships and research experiences. You will hear from future policy makers, activists, entrepeneurs, data scientists, teachers, researchers, and market analysts. Most will tell stories of unmitigated success and transformative learning. Others will share details of unexpected challenges they faced, and how they were required to shift and adapt in response. Students worked in 42 countries in every imaginable field. They will discuss important issues of social justice, relate how they met challenges of communication and expression in new contexts, and talk about how to find and succeed in summer internships.

LEAP is designed to give students who aspire to undertake internships and summer research the opportunity to learn from their peers. It is also for the whole Mount Holyoke community where family, friends, faculty, staff and our alumnae come together to celebrate the work and contributions of the presenters.

We are hugely impressed by students in College 211 and inspired by their individual success and collective learning. Their work in bringing the LEAP Symposium to fruition was exceptional. We thank the faculty, staff, alumnae, donors, and internship and research providers whose contributions have make this event possible.

LEAP presenters: Congratulations.
avatar for Yuan  Tian

Yuan Tian

Chemistry & Philosophy Major
Effect of Oxygen Vacancy on Proton Binding Site Energies of 12.5% Y-doped BaZrO3
South Hadley, Massachusetts
The proton conductivity of perovskites makes them a promising material for fuel cells. A recent experimental study suggested that oxygen vacancies caused by doping the perovskite can enhance proton conduction. We considered twenty-three Glazer distortions as well as three previously-optimized structures for a 2⨉2⨉2 system of 12.5% Y-doped BaZrO3 to find the lowest energy structure. Calculations using conjugate gradient optimization in the Vienna Ab initio Simulations Package (VASP) show average lattice sizes of 4.25 Å with an oxygen vacancy in the 12.5% yttrium doped barium zirconate system. Three types of possible oxygen vacancies are identified from the system and the energy of all 92 proton-binding sites are considered for each type. The energy of proton-binding sites is highly dependent on proximity of dopant and local hydrogen bonding. Bader charge calculations show that some binding sites close to the oxygen vacancy do not have enough electron density to bind a proton.