As the height h of the pattern units increases, {HEAD ~ the thickness} of {TAIL ~ the base unit}, which is top region of the pattern units, decreases, and thus, dielectric breakdown may occur 
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As the height h of the pattern units increases , { HEAD ~ the thickness } of { TAIL ~ the base unit } , which is top region of the pattern units , decreases , and thus , dielectric breakdown may occur
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH