Abaphandi abavela kwi-NTNU bakhanyisa ukukhanya kwiimathiriyeli zemagneti kwizikali ezincinci ngokwenza iimuvi ngoncedo lwee-X-reyi eziqaqambe kakhulu.
U-Erik Folven, umlawuli weqela le-oxide ye-electronics kwiSebe le-Electronics yeSebe le-NTNU, kunye noogxa abavela kwi-NTNU kunye neYunivesithi yaseGhent eBelgium bazimisele ukubona indlela i-micromagnets yefilimu ebhityileyo eguquka ngayo xa iphazanyiswa yimagnethi yangaphandle.Umsebenzi, oxhaswa ngemali yi-NTNU Nano kunye neBhunga loPhando laseNorway, lipapashwe kwiphephancwadi loPhando loPhando lwePhysical.
Iimagnethi ezincinci
U-Einar Standal Digernes wenza imagnethi encinci yesikwere esetyenziswa kuvavanyo.
Imagnethi encinci yesikwere, eyenziwe yi-NTNU Ph.D.umgqatswa Einar Standal Digernes, zimbini nje iimicrometers ububanzi kwaye zahlulwe zibene domains ezine-triangular, ngalinye linemagnethi eyahlukileyo eyalathe ngasekunene okanye ngokuchasene newotshi ejikeleze imagnethi.
Kwimathiriyeli kazibuthe ethile, amaqela amancinane e-athom ayadibana abe ziindawo ezibizwa ngokuba ziindawo ezibizwa ngokuba zii-electrons, apho zonke ii-electron zine-orientation efanayo.
Kwiimagnethi ze-NTNU, le mimandla idibana kwindawo ephakathi-i-vortex core-apho umzuzu wamagnetic ukhomba ngqo okanye ngaphandle kwendiza yezinto eziphathekayo.
“Xa sisebenzisa imagnethi, ngakumbi nangakumbi le mimandla iya kukhomba kwicala elinye,” utshilo uFolven."Banokukhula kwaye banokucutheka, emva koko bahlangane omnye komnye."
Ii-electron ziphantse ngesantya sokukhanya
Ukubona oku kusenzeka akukho lula.Abaphandi bathatha i-micromagnets yabo kwi-synchrotron ye-80m-wide-shaped-shaped synchrotron, eyaziwa ngokuba yi-BESSY II, e-Berlin, apho ii-electron zikhawuleza zide zihambe malunga nesantya sokukhanya.Ezo electron zihamba ngokukhawuleza emva koko zikhupha iiX-reyi eziqaqambe ngokugqithisileyo.
UFolven uthi: “Sithatha ezi X-reyi size sizisebenzise njengokukhanya kwimikroskopu yethu.
Ngenxa yokuba ii-electron zihamba ngeenxa zonke kwi-synchrotron ngamaqhekeza ahlulwe ngama-nanoseconds amabini, ii-X-rays ezizikhuphayo ziza ngokwemibhobho echanekileyo.
Imakroskopu yokuhanjiswa kwe-X-reyi, okanye i-STXM, ithatha ezo X-reyi ukwenza umfanekiso okhawulezayo wesakhiwo semagnethi.Ngokudibanisa ezi zifinyezo kunye, abaphandi banokwenza imuvi ebonisa indlela i-micromagnet itshintsha ngayo ixesha.
Ngoncedo lwe-STXM, uFolven kunye noogxa bakhe baphazamisa i-micromagnets yabo kunye ne-pulse yangoku eyenza i-magnetic field, kwaye yabona imimandla iguqula imilo kunye ne-vortex core isuka kwiziko.
Uthi: “Unomazibuthe omncinci kakhulu, emva koko uyawuxhokonxa kwaye uzame ukuwufanekisa njengoko uzinza kwakhona.Emva koko, bawubona umbindi ubuyela embindini—kodwa uhamba ngendlela ejijekileyo, kungekhona kumgca othe tye.
“Iya kudanisa kwakhona embindini,” utshilo uFolven.
Isiliphu esinye kwaye kuphelile
Kungenxa yokuba bafunda izinto ze-epitaxial, ezenziwe ngaphezulu kwe-substrate evumela abaphandi ukuba badibanise iimpawu zezinto eziphathekayo, kodwa baya kuthintela i-X-rays kwi-STXM.
Ukusebenza kwi-NTNU NanoLab, abaphandi basombulula ingxaki ye-substrate ngokungcwaba i-micromagnet yabo phantsi komgangatho wekhabhoni ukukhusela iimpawu zayo zamagnetic.
Emva koko baqhawula ngononophelo kwaye ngokuchanekileyo i-substrate engaphantsi ngomqadi ogxininisiweyo we-gallium ion de kube kushiyeke umaleko obhityileyo.Inkqubo enzima inokuthatha iiyure ezisibhozo kwisampulu nganye—kwaye ukutyibilika kube kanye kunokuchaza intlekele.
“Eyona nto ibalulekileyo kukuba, ukuba ubulala umazibuthe, asizukwazi oko ngaphambi kokuba sihlale eBerlin,” utshilo."Iqhinga, ewe, kukuzisa ngaphezulu kwesampulu enye."
Ukusuka kwifiziksi esisiseko ukuya kwizixhobo ezizayo
Ngombulelo isebenzile, kwaye iqela lasebenzisa iisampulu zabo ezilungiselelwe ngocoselelo ukwenza itshati ukuba imimandla ye-micromagnet ikhula kwaye inciphe ngokuhamba kwexesha.Baphinde benza ukulinganisa kwekhompyuter ukuqonda ngcono ukuba yeyiphi na amandla asebenzayo.
Kunye nokuqhubela phambili ulwazi lwethu lwefiziksi esisiseko, ukuqonda indlela imagnethi esebenza ngayo kobu bude kunye nezikali zexesha kunokuba luncedo ekudaleni izixhobo ezizayo.
I-Magnetism sele isetyenziselwa ukugcinwa kwedatha, kodwa abaphandi ngoku bafuna iindlela zokuyixhaphaza ngakumbi.Ukuqhelaniswa namagnetic kwi-vortex core kunye nemimandla ye-micromagnet, umzekelo, mhlawumbi ingasetyenziselwa ukubethelela ulwazi ngendlela ye-0 kunye ne-1s.
Abaphandi ngoku bajonge ukuphinda lo msebenzi ngezinto ezichasene ne-ferromagnetic, apho isiphumo somzuzu ngamnye sirhoxisa.Ezi zithembisayo xa kuziwa kwi-computing-kwithiyori, izinto ezichasene ne-ferromagnetic zingasetyenziselwa ukwenza izixhobo ezifuna amandla amancinci kwaye zihlale zizinzile nangona amandla elahlekile-kodwa kuninzi ukukhohlisa ukuphanda ngenxa yokuba imiqondiso abayivelisayo iya kuba buthathaka kakhulu. .
Ngaphandle kolu celomngeni, uFolven unethemba.“Siwugubungele umgangatho wokuqala ngokubonisa ukuba sinokwenza iisampulu kwaye sijonge kuzo ngeX-reyi,” utshilo."Inyathelo elilandelayo liya kuba kukubona ukuba singenza iisampulu ezikumgangatho ophezulu ngokwaneleyo ukufumana umqondiso owaneleyo kwizinto ezichasene ne-ferromagnetic."
Ixesha lokuposa: May-10-2021