J. G. Mantovani

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A non-mechanical technique is presented for transporting micron-sized lunar or Martian soil simulant particles in a controllable manner to an instrument for subsequent analysis. The particles move across a surface in response to multi-phase, high-voltage waveforms that are applied to sets of line-electrodes of constant spacing, which are embedded under an(More)
The paper gives an overview over the potential dust-related hazards for crew and equipment on the surfaces of Moon and Mars, the currently available technologies for dust characterization and dust mitigation and directions for research needed to make future manned space exploration safe and efficient for crew and equipment. Primary research needs for future(More)
We have investigated thin films and junctions based on copper indium diselenide (CIS) which have been grown by electrochemical deposition. CIS is a leading candidate for use in polycrystalline thin film photovoltaic solar cells. Electrodeposition is a cost-effective method for producing thin-film CIS. We have produced both p and n type CIS thin films from(More)
Figure 2. Bearing capacity determined from astronaut bootprints (Modulus of Subgrade Reaction) [2]. Inset (upper left) shows a cross-section of bootprint and the forces involved. Other parameters can be measured using the astronaut’s boot or walking stick. They include surface temperature, dust accumulation, and penetrometry. These and other sensors will(More)
ELF A WHEEL ELECTROMETER TO MEASURE ELECTROSTATIC FIELDS ON THE MARTIAN SURFACE. C.I. Calle, C.R. Buhler, J.G. Mantovani, E.E. Groop, M.G. Buehler, and A.W. Nowicki Electrostatics and Materials Physics Laboratory, NASA Kennedy Space Center, YA-C2-T, Kennedy Space Center, FL 32899; Swales Aerospace, YA-C2-T, Kennedy Space Center, FL 32899; Florida Institute(More)
The surface charge generated on solid dielectrics placed in contact with granular materials at low gas pressures has been measured for several solid dielectrics. Induction sensors embedded in the dielectrics were used to measure the amount of charge that was induced on a metal electrode that had been exposed to some external distribution of electrostatic(More)
The unmanageable effects of the dust on the surface of the moon made lunar traverses for the Apollo astronauts nearly impossible after three days exposure. These effects, governed by electrostatic properties, are responsible for their behavior and, to this date, are largely unclassified. Although many of the electrostatic characteristics of lunar soil have(More)
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