Cov kws tshawb fawb ntawm Ulsan National Institute of Science thiab Technology hauv Kaus Lim Qab Teb tau tsim ib qho tshiab sib nqus sib xyaw cov leeg nqaij. Piv nrog rau cov leeg pob txha, cov khoom siv tshiab tuaj yeem tiv taus ntau dua 1, 000 npaug ntawm nws qhov hnyav, thiab xav tias yuav nqa cov caj npab muaj zog ntau dua rau cov neeg hlau, cov khoom siv hnav, thiab lwm yam. Cov ntawv tau tshaj tawm hauv qhov teeb meem tshiab ntawm Nature Communications.
Cov nqaij ntshiv uas muaj zog, uas ua raws li kev txav mus los ntawm tib neeg cov leeg, tau dhau los ua cov thev naus laus zis hauv ntau yam xws li robotics, wearables, thiab biomedicine. Txawm li cas los xij, cov leeg nqaij ib txwm muaj feem ntau tsis nruj txaus thiab tsis xav tau kev co, ua rau nws nyuaj rau nqa cov khoom hnyav thiab tswj xyuas kom meej.
Yuav kom kov yeej lub bottleneck no, cov kws tshawb fawb tau ua ke ferromagnetic particles uas ua rau muaj zog hlau nplaum loj nrog lub cim xeeb polymer ua los ntawm cov khoom siv sib xyaw ua ke los tsim ib qho tshiab mos magnetic composite cov leeg nqaij nrog kev txhim kho cov kabmob muaj peev xwm thiab elasticity.
Raws li cov kws tshawb fawb, los ntawm txoj kev kho saum npoo tshwj xeeb, lub cev sib sib zog nqus yog tsim los ntawm ferromagnetic hais thiab cov duab nco polymer. Qhov kev sib koom ua ke no tsis yog tsuas yog txhim kho cov khoom siv hluav taws xob ntawm cov khoom sib xyaw, tab sis kuj tso cai rau nws los teb sai sai rau sab nraud magnetic teb.
Cov txiaj ntsig kev sim tau pom tias cov nqaij leeg tshiab tau pom tias muaj kev hloov pauv txawv txawv, nrog rau 2,700 npaug ntau dua thiab ntau dua 8 npaug ntau dua. Nyob rau hauv cov xwm txheej nruj, nws tuaj yeem tiv taus kev ntxhov siab txog li 1, 000 zaug nws qhov hnyav thiab 3,690 zaug compressive stresses.
Txhawm rau txo qhov cuam tshuam ntawm kev co sab nraud, cov kws tshawb fawb kuj tau siv ob txheej txheej, ib qho yog hydrogel. Qhov kev tsim no tso cai rau cov nqaij ntshiv kom muaj kev tswj xyuas meej thaum lub sijhawm ua haujlwm ceev.
Raws li cov kws tshawb fawb, cov khoom siv kho tshuab thiab kev ua kom yooj yim ntawm cov leeg nqaij tshiab no zoo dua li cov leeg nqaij uas twb muaj lawm. Siv ntau txoj kev, xws li laser cua sov thiab magnetic teb, lawv muaj peev xwm tswj tau cov nqaij ntshiv ntawm cov nqaij ntshiv kom ua tau yooj yim txav xws li elongation, contraction, flexion thiab twisting, nrog rau ntau txoj kev txav xws li kev tswj xyuas cov khoom.