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  • Presentation | P13H: Venus Science and Technology, Interior to Exosphere of a Dynamic Planet: Preparing for the Next Generation of Missions II Poster
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  • P13H-2294: Material Selection and Testing of VfOx Sensor Membrane for Oxygen Fugacity Measurement in Lower Venusian Atmosphere
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  • Board 2294‚ Hall EFG (Poster Hall)
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Author(s):
Sarah Derrick, Johns Hopkins University (First Author, Presenting Author)
Zachary Berman, Johns Hopkins University
Kyle Dalrymple, Johns Hopkins University
William Dougherty, Johns Hopkins University
Ethan Dunn, Johns Hopkins University
Louis Lapp, Johns Hopkins University
Aléxia Louisy-Louis, Johns Hopkins University
Patrycja Potrzasaj, Johns Hopkins University
Sarah Horst, Johns Hopkins University
Noam Izenberg, Applied Physics Laboratory Johns Hopkins
David Kraemer, Johns Hopkins University
Adrian Podpirka, Applied Physics Laboratory Johns Hopkins


Unlike the other inner planets of our solar system, Venus’s history still remains elusive. Plate tectonics, volcanism, and the interactions between its barren surface and dense atmosphere are still poorly understood. In an endeavor to unveil the secrets lying below our sister planet’s atmosphere, NASA is sending the DAVINCI probe to conduct two fly-by’s before deploying a titanium sphere that will descend into the Venusian atmosphere. This sphere will house a small, ceramic sensor called VfOx that will measure the percentage of oxygen, also known as partial pressure, present at the various altitudes it descends through. With guidance from experienced project members, sensor development and testing is primarily conducted by a rotating group of students at Johns Hopkins University. Our recent experiments have focused on determining a material that returns the highest quality data at Venus-like temperatures. Through experiments controlling temperature and pressure, we determined that Hionic™, one of the materials we tested, shows promising results for determining partial pressure. Though delays exist in our sensor’s measurements, we believe that Hionic™ has promising potential for oxygen fugacity measurements in the Venusian atmosphere.



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