▁Techn ical ▁University ▁of ▁Berlin , ▁Adolf ▁Matth ias , ▁Professor ▁of ▁High ▁voltage ▁Technology ▁and ▁Elect rical ▁Install ations , ▁appointed ▁Max ▁Kn oll ▁to ▁lead ▁a ▁team ▁of ▁research ers ▁to ▁advance ▁the ▁C RO ▁design . ▁The ▁team ▁consisted ▁of ▁several ▁Ph D ▁students ▁including ▁Ernst ▁Rus ka ▁and ▁B odo ▁von ▁Bor ries . ▁The ▁research ▁team ▁worked ▁on ▁l ens ▁design ▁and ▁C RO ▁column ▁pla cement , ▁to ▁optimize ▁parameters ▁to ▁construct ▁better ▁C RO s , ▁and ▁make ▁electron ▁optical ▁components ▁to ▁generate ▁low ▁magn ification ▁( near ly ▁ 1 : 1 ) ▁images . ▁In ▁ 1 9 3 1 , ▁the ▁group ▁successfully ▁generated ▁magn ified ▁images ▁of ▁mesh ▁gr ids ▁placed ▁over ▁the ▁an ode ▁a pert ure . ▁The ▁device ▁used ▁two ▁magnetic ▁l enses ▁to ▁achieve ▁higher ▁magn ifications , ▁arg u ably ▁creating ▁the ▁first ▁electron ▁mic ros cope . ▁In ▁that ▁same ▁year , ▁Rein hold ▁Rud enberg , ▁the ▁scientific ▁director ▁of ▁the ▁S iem ens ▁company , ▁ ▁pat ented ▁an ▁electro static ▁l ens ▁electron ▁mic ros cope . ▁ ▁Im pro ving ▁resolution ▁At ▁the ▁time , ▁electrons ▁were ▁understood ▁to ▁be ▁charged ▁particles ▁of ▁matter ; ▁the ▁wave ▁nature ▁of ▁electrons ▁was ▁not ▁fully ▁realized ▁until ▁the ▁publication ▁of ▁the ▁De ▁Bro g lie ▁hypothesis ▁in ▁ 1 9 2 7 . ▁Kn oll ' s ▁research ▁group ▁was ▁una ware ▁of ▁this ▁publication ▁until ▁ 1 9 3 2 , ▁when ▁they