USS Gerald R. Ford hosts one of the few large-scale applications of a waste disposal technique in which these substances help convert feedstock into syngas (SIN-gas). In semiconductor manufacture, photoresists can be attacked by these substances in a process called ashing. A (10[1])type of dry etching abbreviated RIE ("R I E"), which uses these substances to remove unwanted material from wafers, can make use of their "inductively coupled" type. Innovations centered on these substances are eligible for the Hannes Alfvén (HAH-nuss alf-VANE) Prize. Similarly to cathode-ray devices, a class of consumer devices named for these substances were extremely prone to "burn-in." In the 2010s, that type of television display named for these substances was largely superseded by OLED ("O L E D") and liquid crystal displays. For 10 points, name this highly-ionized state of matter. ■END■