Archive note: Cov ntawv sau ua siab ncaj khaws cia cov lus thov los ntawm thawj tsab xov xwm thiab tsis yog lawv qhov kev lees paub tshiab. Cov kev tshawb fawb tau piav qhia, txheej txheem, cov khoom siv thiab cov ntaub ntawv siv tau tsis yog cov khoom lag luam, kev qhia tshwj xeeb, daim ntawv pov thawj lossis qhov project ntawm Savo Kusić. Qhov kev tshaj tawm rau pej xeem tam sim no yog tsom rau kev cai qhov rais thiab qhov rooj.
keeb kwm piav qhia ntawm kev tshawb fawb
Ntoo yog cov khoom siv hauv tsev muaj zog thiab ntau yam, tab sis zoo li txhua yam khoom siv, nws muaj nws qhov tsis zoo (nws rots dhau sij hawm, lwj los ntawm kab thiab thaiv qhov kev pom ntawm lub teeb).
Cov iav iav tsis tu ncua tsis zoo dua. Lawv yooj yim refract lub teeb thiab tso cai rau ntau lub zog ntws mus rau hauv lossis tawm ntawm lub tsev. Engineers pom qhov zoo tshaj plaws ntawm ob qho tib si: pob tshab ntoo.
Cov kws tshawb fawb Liangbing Hu, Dr. Mingwei Zhu thiab lawv cov npoj yaig los ntawm University of Maryland tau tswj los ua ib qho thaiv ntawm cov ntoo pob tshab, yog li tau txais cov khoom siv uas tuaj yeem siv hauv kev tsim kho thiab hauv tshuab hluav taws xob raws li lub teeb.
Cov kws tshawb fawb tau tshem tawm ntawm cov ntoo ntawm cov molecule uas ua rau nws nruj thiab tsaus xim, thiab tau txais cov xim tsis muaj xim ntawm cov cellulose uas muaj epoxy resin, yog li ua rau cov ntoo uas feem ntau pob tshab.
“Qhov no tuaj yeem siv rau hauv tsheb vim tias cov ntoo yog pob tshab thiab muaj zog heev,” said Dr. Zhu, thawj tus sau ntawm txoj kev tshawb no. “Koj tuaj yeem siv nws ua cov khoom siv hauv tsev tshwj xeeb.”
Los ntawm kev tshem cov xim thiab cov tshuaj, cov ntoo los ua pob tshab, tab sis nws kuj muaj zog dua thiab zoo dua insulator dua iav, thiab muaj cov cuab yeej ntawm biodegradability zoo dua li yas.
Cov txheej txheem thiab cov khoom tau hais hauv tsab xov xwm
Cov txheej txheem uas ua rau cov ntoo pob tshab pib los ntawm boiling nws nyob rau hauv dej tov nrog sodium hydroxide thiab lwm yam tshuaj rau txog 2 teev. Qhov no leached lignin, molecule uas muab ntoo nws cov xim, tawm ntawm ntoo. Tom qab ntawd, lawv nchuav epoxy resin hla lub thaiv ntawm cov ntoo, uas ua rau nws muaj zog plaub mus rau tsib zaug.
Ib qho ntawm cov khoom nthuav dav ntawm cov ntoo “tshiab” yog tias nws tau khaws cov qauv thiab cov txheej txheem ntuj tsim thaum nws yog “tseem” ntoo. Cov microchannels tuaj yeem ua teeb pom kev zoo li lawv ua cov as-ham ua ib feem ntawm cov nroj tsuag. “Nyob rau hauv cov khoom siv tsoos, lub teeb tau tawg mus,” Hu hais. “Yog tias koj tau txais cov nyhuv ntawd hauv ntoo, ntau lub teeb yuav tuaj rau hauv koj lub tsev.”
Muaj peev xwm siv tau teev nyob rau hauv qhov chaw
Nyob rau theem tom ntej ntawm kev tshawb fawb, cov kws tshawb fawb yuav sim tsim cov txheej txheem uas yuav tso cai rau lawv los ntsuas cov thev naus laus zis no, kom cov pob tshab ntawm cov ntoo loj tuaj yeem tsim tau uas yuav siv tau rau ntau lub hom phiaj los ntawm kev ua qhov rais, cov khoom siv hauv tsev thiab rooj tog, txhua txoj hauv kev rau cov ntawv me me xws li cov khoom siv kho qhov muag uas feem ntau yog ua los ntawm iav lossis yas.
Sources: phys.org, youtube.com