Large-Area Low-Cost Plasmonic Perfect Absorber Chemical Sensor Fabricated by Laser Interference Lithography. ACS SENSORS, (1)9:1148-1154, AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA, September 2016. [PUMA: hydrogen laser perfect sensing; interference lithography} absorber; large-area fabrication; {plasmonics;]