Entry_20203_Callahan_Dennis-Beautiful_Failures Published October 6, 2011 at 480 × 480 in Entry_20203_Callahan_Dennis-Beautiful_Failures ‹ PREVIOUS --- NEXT › ‹ PREVIOUS --- NEXT › Dennis Callahan, Cracked gallium arsenide solar cell films (50X) 6th Place, 2011 Sharing is Caring:FacebookTwitterEmailMorePinterestMastodon