Key Takeaways
- Kev hloov tshiab tsis ntev los no hauv kev siv thev naus laus zis tuaj yeem ua rau lub zog loj dua.
- Cov khoom siv graphene yog ib feem ntawm txoj hauv kev tshiab rau kev tsim cov khoom ntim cia.
- DNA yog lwm txoj hauv kev los nce hard drives uas tseem yuav kav ntev.
Npaj rau cov hard drive ntau dua.
Cov khoom siv graphene tuaj yeem siv los ntim cov ntaub ntawv ntau dua hauv cov hard disk drive piv rau cov txheej txheem tam sim no, cov kws tshawb fawb ntawm Cambridge University pom hauv kev tshawb fawb tsis ntev los no. Nws yog ib qho ntawm ob peb lub thev naus laus zis tshiab uas tuaj yeem ua rau nws muaj peev xwm muab cov ntaub ntawv ntau ntxiv hauv hard disk drives raws li qhov kev thov loj hlob rau kev khaws cia.
"Cov ntawv thov tshiab ob qho tib si roj thiab xav tau cov ntaub ntawv loj heev," John Morris, tus thawj coj thev naus laus zis ntawm lub tshuab tsav nyuaj Seagate Technology, tau hais hauv kev xam phaj email. "Yog vim li cas hard drives tau dav dua. Txawm li cas los xij koj xa mus rau huab-koj cov duab, yeeb yaj kiab, cov ntaub ntawv ntiag tug thiab kev lag luam- nyob rau ntawm lub zog siab dua thiab siab dua."
Muab ntau yam tsawg
Hard disk drives (HDDs) thawj zaug tshwm sim hauv xyoo 1950, tab sis lawv siv los ua cov khoom siv cia hauv cov khoos phis tawj ntawm tus kheej tsuas yog tawm ntawm nruab nrab-1980s. Lawv tau dhau los ua me me hauv qhov loj thiab denser nyob rau hauv cov nqe lus ntawm tus naj npawb ntawm khaws cia bytes. Thaum cov khoom siv hauv xeev tau nrov rau cov khoom siv txawb, HDDs txuas ntxiv siv los khaws cov ntaub ntawv hauv cov khoos phis tawj desktop, feem ntau vim tias lawv pheej yig los tsim thiab yuav khoom.
HDDs muaj ob yam tseem ceeb: platters thiab lub taub hau. Cov ntaub ntawv sau rau ntawm lub platters siv lub taub hau sib nqus, uas sib tw saum lawv thaum lawv tig. Qhov chaw nruab nrab ntawm lub taub hau thiab phaj txuas ntxiv yog txo kom ua kom muaj zog dua.
Qhov no yuav ntxiv dag zog rau txoj kev loj hlob tshiab ntawm qhov chaw siab ceev hard disk drives.
Tam sim no, carbon-based overcoats (COCs)-txheej siv los tiv thaiv platters los ntawm kev puas tsuaj thiab corrosion-nyob ib feem tseem ceeb ntawm qhov sib txawv. Cov ntaub ntawv ceev ntawm HDDs tau quadrupled txij li xyoo 1990, thiab COC thickness tau txo los ntawm 12.5nm mus rau ib ncig ntawm 3nm, uas sib raug rau ib terabyte ib square inch. Tam sim no, cov kws tshawb fawb hais tias graphene, uas yog ib txheej ntawm cov atoms txheej txheem nyob rau hauv ob sab ntawm honeycomb lattice, cia lawv nce qhov ceev.
Cov kws tshawb fawb Cambridge tau hloov pauv COC kev lag luam nrog ib mus rau plaub txheej graphene thiab kuaj kev sib txhuam, hnav, corrosion, thermal stability, thiab lubricant compatibility. Tshaj li nws qhov kev sib tw tsis zoo, graphene ua tiav tag nrho cov khoom zoo tshaj plaws ntawm HDD overcoat hauv kev tiv thaiv corrosion, tsis tshua muaj kev sib txhuam, hnav tsis kam, hardness, lubricant compatibility, thiab nto smoothness.
Graphene ua kom txo qis kev sib txhuam ob zaug thiab muab kev tiv thaiv corrosion thiab hnav zoo dua li cov kev daws teeb meem ntawm lub xeev, cov kws tshawb fawb tau thov. Ib txheej graphene tsuas yog txo qhov corrosion ntawm 2.5 npaug.
Cov kws tshawb fawb hauv Cambridge tau pauv graphene mus rau cov hard disks ua los ntawm hlau-platinum ua cov txheej txheem sib nqus thiab sim Heat-Assisted Magnetic Recording (HAMR). Cov thev naus laus zis tshiab no ua rau kom muaj kev khaws cia ntau ntxiv los ntawm cua sov cov txheej txheem rau qhov kub thiab txias.
COCs tam sim no tsis ua haujlwm ntawm qhov kub siab no, tab sis graphene ua. Graphene, ua ke nrog HAMR, tuaj yeem ua tau zoo dua HDDs tam sim no, muab cov ntaub ntawv tsis tau pom dua ua ntej siab dua 10 terabytes ib square inch, cov kws tshawb fawb hais.
"Qhia tau tias graphene tuaj yeem ua cov txheej txheem tiv thaiv rau cov txheej txheem hard disk thiab nws muaj peev xwm tiv taus HAMR cov xwm txheej yog qhov txiaj ntsig tseem ceeb," Anna Ott los ntawm Cambridge Graphene Center, yog ib tus kws sau ntawv. ntawm qhov kev tshawb fawb no, tau hais hauv xov xwm tshaj tawm. "Qhov no yuav ntxiv dag zog rau txoj kev loj hlob ntawm cov tshiab high-density hard disk drives."
DNA rau Cia?
Graphene tsis yog ib qho kev ua si hauv nroog thaum nws los txog rau kev tsim kho tshiab hauv cov ntaub ntawv khaws cia. Cov kws tshawb fawb tab tom tshawb nrhiav qhov ua tau tias DNA tuaj yeem siv los khaws cov ntaub ntawv zoo li cov yeeb yaj kiab thiab suab paj nruag.
DNA cia thev naus laus zis twb muaj lawm, tab sis nws yeej tsis tau hloov mus ua cov khoom muaj txiaj ntsig rau cov neeg siv khoom. Qhov ntawd tuaj yeem hloov pauv ua tsaug rau cov kws tshawb fawb ntawm Los Alamos National Laboratory, uas nyuam qhuav tsim software, Adaptive DNA Storage Codex (ADS Codex), uas txhais cov ntaub ntawv cov ntaub ntawv los ntawm cov lus binary ntawm xoom thiab cov computers nkag siab txog cov lej biology nkag siab.
"DNA cia tuaj yeem cuam tshuam txoj hauv kev peb xav txog kev khaws cia vim tias cov ntaub ntawv khaws cia ntev heev thiab cov ntaub ntawv ceev heev," Bradley Settlemyer, tus kws tshawb fawb ntawm Los Alamos, tau hais hauv xov xwm tshaj tawm. "Koj tuaj yeem khaws tag nrho YouTube hauv koj lub tub yees es tsis txhob nyob hauv thaj tsam thiab acres ntawm cov chaw zov me nyuam."
