Abaphandi baseCRANN (iZiko loPhando ngeeNanostructures eziLungiselelanayo kunye neeNanodevices), kunye neSikolo seFiziksi kwiTrinity College eDublin, namhlanje babhengeze ukubaizinto zemagnethieyenziwe kwiZiko ibonisa ukutshintshwa kwemagnethi okukhawulezayo okwake kwarekhodwa.
Iqela lisebenzise iinkqubo zelaser ze-femtosecond kwiLebhu yoPhando lwePhotonics eCRANN ukutshintsha nokutshintsha kwakhona indlela ezisebenza ngayo izinto zazo nge-trillionths yomzuzwana, ngokukhawuleza kathandathu kunerekhodi yangaphambili, kwaye ngokukhawuleza kalikhulu kunesantya sewotshi sekhompyutha yomntu.
Olu phando lubonisa amandla ale nto kwisizukulwana esitsha seekhompyutha ezikhawulezayo kakhulu kunye neenkqubo zokugcina idatha ezisebenzisa amandla kakuhle.
Abaphandi bafikelele kwisantya sabo sokutshintsha esingazange sibonwe ngaphambili kwi-alloy ebizwa ngokuba yi-MRG, eyaqalwa ukwenziwa liqela ngo-2014 nge-manganese, i-ruthenium kunye ne-gallium. Kolu vavanyo, iqela lifikelele kwiifilimu ezincinci ze-MRG ngokukhanya okubomvu kwe-laser, okubonelela ngee-megawatts zamandla ngaphantsi kwesiqingatha sebhiliyoni somzuzwana.
Ukudluliselwa kobushushu kutshintsha indlela esebenza ngayo i-MRG. Kuthatha ishumi le-picosecond elikhawulezayo ngendlela engenakucingelwa ukuze kufezekiswe olu tshintsho lokuqala (1 ps = i-trillionth enye yomzuzwana). Kodwa, okubaluleke ngakumbi, iqela lifumanise ukuba lingayitshintsha indlela esebenza ngayo kwakhona i-10 trillionths yomzuzwana kamva. Olu lolona tshintsho lukhawulezayo lwendlela esebenza ngayo i-magnet olukhe lwabonwa.
Iziphumo zabo zipapashwe kule veki kwiphephancwadi eliphambili lefiziksi, iPhysical Review Letters.
Oku kufunyaniswa kungavula iindlela ezintsha zekhompyutha entsha kunye netekhnoloji yolwazi, ngenxa yokubalulekaizinto zemagnethikweli shishini. Ezifihliweyo kwizixhobo zethu ezininzi ze-elektroniki, kunye nakwiindawo ezinkulu zedatha embindini we-intanethi, izixhobo zemagnethi ziyafunda kwaye zigcina idatha. Ukuqhuma kolwazi lwangoku kuvelisa idatha engaphezulu kwaye kudla amandla amaninzi kunangaphambili. Ukufumana iindlela ezintsha zokusebenzisa amandla kakuhle zokulawula idatha, kunye nezixhobo ezihambelanayo, yinto ephambili kuphando lwehlabathi liphela.
Eyona nto iphambili kwimpumelelo yamaqela eTrinity yayikukwazi kwawo ukufezekisa utshintsho olukhawulezayo ngaphandle kwesimba semagnethi. Utshintsho lwemveli lwemagnethi lusebenzisa enye imagnethi, ebiza kakhulu ngokubhekiselele kumandla kunye nexesha. Nge-MRG utshintsho lwenziwe nge-heat pulse, kusetyenziswa unxibelelwano olulodwa lwezixhobo nokukhanya.
Abaphandi beTrinity uJean Besbas kunye noKarsten Rode baxoxa ngenye indlela yophando:
“Izinto zeMagneticngokwemvelo zinememori enokusetyenziswa kwi-logic. Okwangoku, ukutshintsha ukusuka kwi-magnetic state enye 'logical 0,' ukuya kwenye 'logical 1,' bekusoloko kudinga amandla amaninzi kwaye kucotha kakhulu. Uphando lwethu lujongana nesantya ngokubonisa ukuba singatshintsha i-MRG ukusuka kwenye imeko ukuya kwenye kwi-picoseconds eziyi-0.1 kwaye okubalulekileyo kukuba iswitshi yesibini inokulandela ii-picoseconds ezili-10 kuphela kamva, ngokuhambelana ne-frequency yokusebenza ye-~ 100 gigahertz—ngokukhawuleza kunayo nayiphi na into ebonwe ngaphambili.
“Olu phando lubonisa ubuchule obukhethekileyo be-MRG yethu bokudibanisa ukukhanya nokujikeleza ngempumelelo ukuze sikwazi ukulawula imagnetism ngokukhanya kunye nokukhanya ngemagnetism kwixesha elingenakufezekiswa ukuza kuthi ga ngoku.”
Ethetha ngomsebenzi weqela lakhe, uNjingalwazi uMichael Coey, iSikolo seFiziksi sikaTrinity kunye neCRANN, uthe, “Ngo-2014 xa mna neqela lam saqala ukubhengeza ukuba senze i-alloy entsha ngokupheleleyo ye-manganese, i-ruthenium kunye ne-gallium, eyaziwa ngokuba yi-MRG, asizange sicinge ukuba le nto yayinamandla amangalisayo e-magneto-optical.
"Lo mboniso uza kukhokelela kwiingcamango zesixhobo esitsha ezisekelwe ekukhanyeni nakwimagnethi ezinokuxhamla kwisantya esiphezulu kunye nokusebenza kakuhle kwamandla, mhlawumbi ekugqibeleni kufezekiswe isixhobo esinye esibanzi esinememori edibeneyo kunye nokusebenza kwengqiqo. Ngumngeni omkhulu, kodwa sibonise izinto ezinokwenza kube nokwenzeka. Sinethemba lokufumana inkxaso-mali kunye nentsebenziswano kushishino ukuze siqhubeke nomsebenzi wethu."
Ixesha lokuthumela: Meyi-05-2021