Masana kimiyya a Jami'ar Rice sun ƙirƙiri ingantaccen fasahar ƙwaƙwalwar ajiya mai ƙarfi wanda ke ba da damar adana manyan yawa tare da ƙaramin kuskuren kwamfuta.

Abubuwan tunawa sun dogara ne akantantalum oxide, wani na kowa insulator a cikin lantarki. Aiwatar da wutar lantarki zuwa sanwici mai kauri na 250 nanometer na graphene, tantalum, nanoporoustantalumoxide da platinum suna haifar da raƙuman magana a inda yadudduka suka hadu. Sarrafa ƙarfin lantarki waɗanda ke canza ions oxygen da guraben aiki suna canza rago tsakanin waɗanda da sifili.

Binciken da dakin binciken kimiyya na Rice na James Tour ya yi zai iya ba da damar yin abubuwan tunawa da ke ajiye har zuwa gigabit 162, wanda ya fi sauran tsarin ƙwaƙwalwar ajiya na oxide da masana kimiyya ke bincike. (Rago takwas daidai byte ɗaya; naúrar mai girman gigabit 162 zai adana kimanin gigabytes 20 na bayanai.)

Cikakkun bayanai sun bayyana akan layi a cikin mujallar American Chemical SocietyNano Haruffa.

Kamar binciken da Tour Lab ya yi a baya na ƙwaƙwalwar silicon oxide, sabbin na'urorin suna buƙatar na'urorin lantarki guda biyu ne kawai a kowane da'irar, wanda ya sa su fi sauƙi fiye da ƙwaƙwalwar walƙiya na yau da ke amfani da uku. "Amma wannan wata sabuwar hanya ce ta yin ultradenense, ƙwaƙwalwar kwamfuta mara canzawa," in ji Tour.

Abubuwan da ba su canzawa ba suna riƙe bayanan su ko da lokacin da wutar lantarki ke kashe, ba kamar ƙwaƙwalwar shiga bazuwar kwamfuta ba da ke rasa abinda ke ciki lokacin da injin ke rufe.

Kwakwalwar ƙwaƙwalwar ajiyar zamani tana da buƙatu da yawa: Dole ne su karanta da rubuta bayanai cikin babban sauri kuma suna riƙe gwargwadon iko. Dole ne kuma su kasance masu ɗorewa kuma su nuna kyakkyawar riƙon wannan bayanan yayin amfani da ƙaramin ƙarfi.

Tour ya ce sabon ƙirar Rice, wanda ke buƙatar ƙarancin kuzari sau 100 fiye da na'urori na yanzu, yana da yuwuwar kaiwa ga dukkan alamu.

“WannantantalumƘwaƙwalwar ajiya ta dogara ne akan tsarin tasha biyu, don haka an saita duk don tarin ƙwaƙwalwar ajiya na 3-D, ”in ji shi. "Kuma baya buƙatar diodes ko masu zaɓe, yana mai da shi ɗaya daga cikin mafi sauƙin ƙwaƙwalwar ƙwaƙwalwar ajiya don ginawa. Wannan zai zama babban mai fafatawa don haɓaka buƙatun ƙwaƙwalwar ajiya a cikin babban ma'aunin ma'ajin bidiyo da tsararrun sabar sabar."

Tsarin da aka shimfida ya ƙunshi tantalum, nanoporous tantalum oxide da multilayer graphene tsakanin nau'ikan lantarki na platinum guda biyu. A cikin yin kayan, masu binciken sun gano cewa tantalum oxide a hankali yana rasa iskar oxygen, yana canzawa daga iskar oxygen mai wadata, nanoporous semiconductor a saman zuwa oxygen-malauci a kasa. Inda iskar oxygen ta ɓace gaba ɗaya, ya zama tantalum mai tsabta, ƙarfe.