"Khoom siv khawv koob" graphene

"Khoom siv khawv koob" graphene siv tau rau kev kuaj pom COVID-19 sai thiab raug
Raws li cov xov xwm txawv teb chaws tshaj tawm, cov kws tshawb fawb ntawm University of Illinois hauv Chicago tau siv graphene, ib qho ntawm cov khoom siv muaj zog tshaj plaws thiab nyias tshaj plaws, los nrhiav tus kab mob sars-cov-2 hauv kev sim hauv chav kuaj. Cov kev tshawb pom no yuav yog qhov kev tshawb pom tshiab hauv kev nrhiav COVID-19 thiab tej zaum yuav siv tau rau hauv kev sib ntaus sib tua tiv thaiv COVID-19 thiab nws cov variants, cov kws tshawb fawb hais.
Hauv kev sim, cov kws tshawb fawb tau ua kecov ntawv graphenenrog rau qhov tuab ntawm tsuas yog 1/1000 daim ntawv nplaum nrog cov tshuaj tiv thaiv kab mob tsim los tsom rau cov glycoproteins uas muaj npe nrov ntawm COVID-19. Tom qab ntawd lawv ntsuas qhov kev co ntawm cov ntawv graphene thaum lawv raug rau ob qho tib si cov qauv zoo thiab cov qauv tsis zoo hauv cov qaub ncaug cuav. Qhov kev co ntawm cov ntawv graphene antibody txuas nrog tau hloov pauv thaum kho nrog cov qauv zoo ntawm cov qauv zoo ntawm cov qauv zoo, tab sis tsis hloov pauv thaum kho nrog cov qauv tsis zoo ntawm cov qauv zoo ntawm cov qauv zoo lossis lwm yam kab mob coronaviruses. Qhov kev hloov pauv kev co ntsuas nrog lub cuab yeej hu ua Raman spectrometer pom tseeb hauv tsib feeb. Lawv cov kev tshawb pom tau luam tawm hauv ACS Nano rau lub Rau Hli 15, 2021.
"Lub zej zog yeej xav tau cov hau kev zoo dua los nrhiav covid thiab nws cov variants sai thiab raug, thiab kev tshawb fawb no muaj peev xwm coj kev hloov pauv tiag tiag. Lub sensor zoo dua muaj kev nkag siab zoo thiab xaiv tau covid, thiab ceev thiab pheej yig Vikas berry, tus sau ntawv laus ntawm daim ntawv hais tias"cov khoom tshwj xeebntawm "khoom siv khawv koob" graphene ua rau nws muaj ntau yam siv, uas ua rau hom sensor no ua tau.
Graphene yog ib hom khoom siv tshiab uas muaj SP2 hybrid txuas nrog cov pa roj carbon atoms nruj nreem rau hauv ib txheej ob-seem honeycomb lattice qauv. Cov pa roj carbon atoms raug sib txuas ua ke los ntawm cov tshuaj sib txuas, thiab lawv qhov elasticity thiab kev txav mus los tuaj yeem tsim cov resonance vibration, tseem hu ua phonon, uas tuaj yeem ntsuas tau meej heev. Thaum ib lub molecule zoo li sars-cov-2 cuam tshuam nrog graphene, nws hloov cov resonance vibrations no hauv txoj kev tshwj xeeb thiab ntsuas tau. Cov kws tshawb fawb hais tias cov kev siv tau ntawm graphene atomic scale sensors - los ntawm kev kuaj pom covid mus rau ALS mus rau mob qog noj ntshav - txuas ntxiv nthuav dav.