Image Details
Caption: Figure 4.
Surface energies of pristine and air-exposed tholins produced from 5% CH4 in N2 on glass, quartz, and mica: (a) ARC/COSmIC plasma, (b) JHU/PHAZER plasma, (c) JHU/PHAZER UV, and (d) UNI/PAC UV. Colored bars show total surface energy and identify the substrate; silver and gray segments show the dispersive and polar components, respectively. Black, blue, and red error bars denote 1σ uncertainties in the total, dispersive, and polar values, respectively.
© 2026. The Author(s). Published by the American Astronomical Society.