Izazinzulu kwiYunivesithi yaseRice zenze iteknoloji yememori eqinileyo evumela ukugcinwa koxinano oluphezulu kunye nesiganeko esincinci seempazamo zekhompyutheni.

Iinkumbulo zisekelwetantalum oxide, i-insulator eqhelekileyo kwi-electronics. Ukufaka amandla ombane kwisandwich engqindilili ye-250-nanometer yegraphene, tantalum, nanoporoustantalumioksidi kunye neplatinam yenza amasuntswana anokulungiseka apho iileya zidibana khona. Ulawulo lombane olutshintsha ii-ion ze-oksijini kunye nezithuba zitshintsha iibits phakathi kwezinye kunye no-zero.

Ukufunyaniswa kwelebhu yeRice yekhemisti uJames Tour kunokuvumela iinkumbulo ezinqamlezayo ezigcina ukuya kuthi ga kwi-162 gigabits, ephezulu kakhulu kunezinye iinkqubo zememori esekwe kwi-oxide phantsi kophando ngoososayensi. (Iibhithi ezisibhozo zilingana nebyte enye; iyunithi ye-162-gigabit ingagcina malunga ne-20 gigabytes yolwazi.)

Iinkcukacha zivela kwi-intanethi kwijenali ye-American Chemical SocietyIileta zeNano.

Njengokufunyanwa kwelebhu yoKhenketho yangaphambili yeenkumbulo ze-silicon oxide, izixhobo ezitsha zifuna kuphela ii-electrode ezimbini kwisekethe nganye, zizenza zibe lula kuneenkumbulo zanamhlanje ezisebenzisa ezintathu. "Kodwa le yindlela entsha yokwenza imemori yekhompyuter engapheliyo, engaguqukiyo," utshilo uKhenketho.

Iinkumbulo ezingaguqukiyo zigcina idatha yazo naxa amandla ecimile, ngokungafaniyo neenkumbulo eziguquguqukayo zokufikelela kwikhompyuter eziphulukana nemixholo yazo xa umatshini uvaliwe.

Iichips zememori zanamhlanje zineemfuno ezininzi: Kufuneka bafunde kwaye babhale idatha ngesantya esiphezulu kwaye babambe kangangoko kunokwenzeka. Kufuneka kwakhona zibe zomelele kwaye zibonise ukugcinwa kakuhle kwaloo datha ngelixa usebenzisa amandla amancinci.

Ukhenketho uthe uyilo olutsha lweRice, olufuna amandla angaphantsi kwamaxesha ali-100 kunezixhobo ezikhoyo, lunamandla okubetha onke amanqaku.

“Okutantaluminkumbulo isekwe kwiinkqubo ezineeterminal ezimbini, ngoko ke yonke imiselwe i-3-D memory stacks,” utshilo. Kwaye ayifuni kwa diode okanye abakhethi, iyenza ibe yenye yezona nkumbulo zilula kakhulu ukuzakha. Oku kuya kuba lukhuphiswano lokwenyani kwiimfuno zememori ezikhulayo kwindawo yokugcina ividiyo enenkcazo ephezulu kunye noluhlu lweeseva. ”

Ulwakhiwo olunamaleko luquka i-tantalum, i-nanoporous tantalum oxide kunye ne-multilayer graphene phakathi kwee-electrode ezimbini zeplatinam. Ekwenzeni izinto eziphathekayo, abaphandi bafumene i-tantalum oxide ngokuthe ngcembe ilahlekelwa yi-oxygen ion, itshintsha ukusuka kwi-oksijini-ecebileyo, i-semiconductor ye-nanoporous phezulu ukuya kwi-oksijini-ihlwempu ezantsi. Apho ioksijini inyamalala ngokupheleleyo, iba yi-tantalum ecocekileyo, isinyithi.