CREATE TABLE table_4263 ("Material" CLOB, "Type" CLOB, "Geometry" CLOB, "Output voltage" CLOB, "Output power" CLOB, "Synthesis" CLOB, "Researched at" CLOB)

Where was d: ~50nm, l: ~600nm geometry researched?
SELECT "Researched at" FROM table_4263 WHERE "Geometry" = 'D: ~50nm, L: ~600nm'
SELECT "Researched at" FROM "table_4263" WHERE "Geometry" = 'D: ~50nm, L: ~600nm'