Masayendisiti paRice University akagadzira yakasimba-state memory tekinoroji inobvumira yakakwirira-density chengetedzo ine hushoma chiitiko chekukanganisa kwekombuta.

Ndangariro dzinobva patantalum oxide, chivhariso chakajairika mumagetsi. Kuisa voltage kune 250-nanometer-yakakora sandwich yegraphene, tantalum, nanoporoustantalumoxide uye platinamu inogadzira mabheti anogona kugadziriswa panosangana maseru. Kudzora mavoltages anoshandura maion eokisijeni uye vacancies chinja mabits pakati peaya nemazero.

Kuwanikwa neRice lab yechemist James Tour inogona kubvumira ndangariro dzakachinjika dzinochengeta kusvika 162 gigabits, yakakwira zvakanyanya kupfuura mamwe oxide-based memory masisitimu ari kuferefetwa nemasaenzi. (Mabhiti masere akaenzana nebyte imwe; 162-gigabit unit yaizochengeta anenge 20 gigabytes eruzivo.)

Tsanangudzo inoonekwa online muAmerican Chemical Society magaziniNano Letters.

Kufanana neTour lab yakapfuura kuwanikwa kwesilicon oxide ndangariro, zvishandiso zvitsva zvinongoda maelectrode maviri padunhu, zvichiita kuti zvive nyore pane zvemazuva ano flash memory anoshandisa matatu. "Asi iyi inzira nyowani yekugadzira ndangariro dzekombuta dzakanyanyisa, dzisingaite," Tour akadaro.

Nonvolatile ndangariro dzinobata data radzo kunyangwe simba radzimwa, kusiyana nekusagadzikana-yekuwana ndangariro dzekombuta dzinorasikirwa nezviri mukati kana muchina wavharwa.

Mazuva ano memory machipisi ane zvakawanda zvinodiwa: Ivo vanofanirwa kuverenga nekunyora data nekumhanya kwakanyanya uye kubata zvakanyanya sezvinobvira. Dzinofanirwawo kuve dzakasimba uye kuratidza kuchengetedza kwakanaka kweiyo data uchishandisa simba shoma.

Tour yakati dhizaini nyowani yeRice, inoda simba rakapetwa ka100 pane yazvino, ine mukana wekurova mamakisi ese.

“Izvitantalumndangariro dzakavakirwa pamatanho maviri-terminal masisitimu, saka zvese zvakagadzirirwa 3-D memory stacks, ”akadaro. “Uye haitombodi madhiodhi kana maelectors, zvichiita kuti ive imwe yedzakareruka dzendangariro kugadzira. Uyu uchave mukwikwidzi chaiye wekukura kwendangariro kudiwa mune yakakwirira-tsanangudzo yevhidhiyo yekuchengetedza uye server arrays. "

Iyo yakaturikidzana chimiro ine tantalum, nanoporous tantalum oxide uye multilayer graphene pakati pema electrode maviri eplatinamu. Mukugadzira zvinyorwa, vatsvakurudzi vakawana tantalum oxide zvishoma nezvishoma inorasikirwa neokisijeni ions, ichichinja kubva kune-okisijeni-yakapfuma, nanoporous semiconductor kumusoro kusvika oksijeni-varombo pasi. Apo okisijeni inonyangarika zvachose, inova tantalum yakachena, simbi.