"Izinto zomlingo" igraphene

I-graphene "yezinto zomlingo" ingasetyenziselwa ukufumanisa ngokukhawuleza nangokuchanekileyo i-COVID-19
Ngokweengxelo zeendaba zamanye amazwe, abaphandi kwiYunivesithi yase-Illinois eChicago basebenzise ngempumelelo i-graphene, enye yezona zinto zinamandla nezincinci ezaziwayo, ukufumanisa intsholongwane ye-sars-cov-2 kwiimvavanyo zelebhu. Ezi ziphumo zisenokuba yinkqubela phambili ekufumaneni i-COVID-19 kwaye zingasetyenziswa ekulweni ne-COVID-19 kunye nezinye iintlobo zayo, batsho abaphandi.
Kolu vavanyo, abaphandi badibaniseamaphepha egrapheneenobukhulu obuyi-1/1000 kuphela yesitampu esine-antibody eyenzelwe ukujolisa kwi-glycoproteins ezidumileyo kwi-COVID-19. Emva koko balinganisa ukungcangcazela kwamanqanaba e-athomu kwamaphepha e-graphene xa evezwa kwiisampulu ze-cowid positive kunye ne-cowid negative kumathe okwenziwa. Ukungcangcazela kwephepha le-graphene elidityaniswe ne-antibody kwatshintsha xa kunyangwa ngeesampulu ze-cowid-19, kodwa akuzange kutshintshe xa kunyangwa ngeesampulu ze-cowid-19 okanye ezinye ii-coronavirus. Utshintsho lokungcangcazela olulinganiswe ngesixhobo esibizwa ngokuba yi-Raman spectrometer luyabonakala kwimizuzu emihlanu. Iziphumo zabo zapapashwa kwi-ACS Nano ngoJuni 15, 2021.
"Uluntu ngokucacileyo lufuna iindlela ezingcono zokufumanisa i-covid kunye neendidi zayo ngokukhawuleza nangokuchanekileyo, kwaye olu phononongo lunamandla okuzisa utshintsho lokwenyani. I-sensor ephuculweyo inobuntununtunu obuphezulu kunye nokukhetha i-covid, kwaye ikhawuleza kwaye ingabizi kakhulu. USid Vikas berry, umbhali ophezulu wephepha" Iiipropati ezizodwaye-graphene "yezinto zomlingo" yenza ukuba ibe nokuguquguquka okukhulu, nto leyo eyenza olu hlobo lwesensa lube nokwenzeka.
I-Graphene luhlobo lwento entsha ene-SP2 hybrid connected carbon atom afakwe ngokuqinileyo kwisakhiwo se-honeycomb lattice esinomgangatho omnye. Ii-athomu ze-carbon zidityaniswe kunye zii-chemical bonds, kwaye ukuthamba kwazo kunye nokuhamba kwazo kunokuvelisa i-resonance vibration, eyaziwa ngokuba yi-phonon, enokulinganiswa ngokuchanekileyo. Xa i-molecule efana ne-sars-cov-2 idibana ne-graphene, itshintsha ezi resonance vibration ngendlela ethile nenokubalwa. Abaphandi bathi ukusetyenziswa okunokwenzeka kwee-graphene atomic scale sensors - ukusuka ekufumaneni i-covid ukuya kwi-ALS ukuya kumhlaza - kuyaqhubeka nokwanda, batsho njalo abaphandi.