Zonke izinhlobo zezinto ezisetshenziswayo zisetshenziselwa ukuphrinta kwe-3D kulezi zinsuku, i-Kevlar ne-fiberglass eqinise ama-nyloni. njll. Kepha ngenkathi kuliqiniso lokho ukuqina kwezinto kubalulekile, kanjalo nokwakheka kwangaphakathi kwento I-3D iphrintiwe. Muva nje, iqembu labacwaningi abavela ku- I-MIT yathuthukisa enye yezinto eziqine kakhulu kepha ezilula kakhulu ngokucindezela nokuncibilikisa izinhlayiya ze-graphene.
Kuze kube manje, abacwaningi bebenobunzima bokuguqula amandla we-graphene anezinhlangothi ezintathu abe yizakhiwo ezintathu. Kepha umklamo omusha kusuka ku-MIT, a ukumiswa kwe-graphene okufana ne- isiponji, singaba namandla aphindwe kayishumi kunensimbi, ngesibalo samaphesenti ayisihlanu kuphela.
Ukutholwa kwethimba labacwaningi be-MIT kusanda kubikwa kumagazini iScience Advances. Lo mbhalo wabhalwa ngokubambisana nguMarkus Buehler, uprofesa wezobunjiniyela waseMcAfee kanye nenhloko yoMnyango Wezobunjiniyela Bezemvelo kanye Nezemvelo (i-CEE) we-MIT; Umcwaningi wesayensi we-CEE uZhao Qin; Umfundi othweswe iziqu uGang Seob Jung; NoMin Jeong Kang Meng, isigaba sango-2016.
Ku-geometry yesakhiwo seGraphene kuyisihluthulelo
Ukuthola kwabo, ngokusho kweMIT, kuveza ukuthi "isici esibalulekile sezimo ezintsha ze-3D inokuningi okuphathelene nokulungiswa kwayo okungajwayelekile kwejiyomethri kunokwaziswa uqobo, okuphakamisa ukuthi izakhiwo ezifanayo zingatholakala ezintweni ezahlukahlukene uma sisebenzisa izici ezifanayo zejometri. »
Iqembu likhiqize i- isakhiwo esizinzile nesiqinile esifana namakhorali nezidalwa ezincane kakhulu ezaziwa ngokuthi ama-diatom, usebenzisa inhlanganisela yokushisa nengcindezi ukucindezela amaflake amancane e-graphene. Izimo eziphumayo zinendawo enkulu ngokulingana nevolumu yazo, futhi ziqine ngokweqile. Zibukeka njengamabhola eNerf - ziyizinto eziyindilinga, kepha zigcwele izimbobo. Lezi zimo eziyinkimbinkimbi zaziwa ngokuthi ama-gyroids., futhi uBuehler uthe "kungenzeka kungenzeki" ukuzidala kusetshenziswa ukukhiqizwa okuvamile. Ekuvivinyweni kwelabhorethri, iqembu lisebenzise amamodeli aphrintiwe e-3D ama-gyroids, lakhulisa izikhathi eziyizinkulungwane ubukhulu bawo bemvelo.
Ithimba lifake amamodeli e-3D ezivivinyweni ezahlukahlukene zokuqina kokuqina nezokuminyanisa, zisebenzisa amamodeli wazo zethiyori ukulingisa impendulo yomshini ngaphansi komthwalo. Kwelinye lamasampuli ethu bakutholile lokho nge U-5% wamanani wensimbi atholwe izikhathi eziphindwe ka-10 ngamandla alokho okushiwo".
Okwenziwe nge-3D graphene, okwenziwe izindawo ezigobile ngaphansi kwe-deformation, kuphendula njengamaphepha. Leli phepha lingashwabana kalula, ngoba aliqinile kububanzi nobude balo. Kepha lapho iphepha lifakwa kushubhu, amandla asebude beshubhu akhulu kakhulu. Ukuhlelwa kwejometri kwama-graphene flakes ngemuva kokwelashwa kunokucushwa okufanayo.
Izicelo ezingenzeka
Phakathi kwezicelo ezingenzeka, kuvela ukuthi Izici zejometri ezitholwe ngezinye izinto zingasetshenziswa, njengama-polymers noma izinsimbi, ukuze thola izinzuzo ezifanayo zamandla ngezindleko eziphansi zokukhiqiza. Kukhona futhi ithuba lokusebenzisa izinhlayiya ze-polymer noma zensimbi njengamathempulethi, usebenzisa inqolobane yomhwamuko wamakhemikhali ngaphambi kokushiswa nokucindezelwa kokwelashwa ukuwamboza nge-graphene. Ngokulandelayo, i-polymer noma insimbi ingasuswa ukuze kugcinwe i-3D graphene ngendlela ye-gyroid. Le geometry enezimbobo ingasetshenziswa lapho kwakhiwa izakhiwo ezinkulu, njengebhuloho. Kunganikeza nokufakwa okuhle kwebhuloho, ngenxa yenani lomoya ovaliwe.