Monga aliyense amene adawongola tsitsi lake akudziwa, madzi ndi mdani.Tsitsi lomwe limawongoleredwa mwamphamvu ndi kutentha limabwereranso kukhala ma curls mphindi ikakhudza madzi.Chifukwa chiyani?Chifukwa tsitsi limakumbukira mawonekedwe.Zinthu zake zakuthupi zimalola kuti zisinthe mawonekedwe poyankha zokopa zina ndikubwerera ku mawonekedwe ake oyambirira poyankha ena.
Nanga bwanji ngati zida zina, makamaka nsalu, zinali ndi mawonekedwe otere?Tangoganizani t-sheti yokhala ndi mpweya wozizirira womwe umatseguka ukakumana ndi chinyontho ndikutsekedwa ukauma, kapena chovala chofanana ndi chimodzi chomwe chimatambasuka kapena kufinya potengera miyeso ya munthu.
Tsopano, ofufuza a ku Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) apanga zinthu zogwirizana ndi biocompatible zomwe zingathe kusindikizidwa mu 3D mu mawonekedwe aliwonse ndi kukonzedweratu ndi kukumbukira mawonekedwe osinthika.Zinthuzi zimapangidwa pogwiritsa ntchito keratin, puloteni ya ulusi yomwe imapezeka mu tsitsi, misomali ndi zipolopolo.Ofufuzawo adatulutsa keratin kuchokera ku ubweya wa Agora wotsala womwe umagwiritsidwa ntchito popanga nsalu.
Kafukufukuyu angathandize kuyesetsa kuchepetsa zinyalala m'makampani opanga mafashoni, chimodzi mwazowononga kwambiri padziko lapansi.Kale, opanga monga Stella McCarthy akuganiziranso momwe makampani amagwiritsira ntchito zipangizo, kuphatikizapo ubweya.
"Ndi polojekitiyi, tawonetsa kuti sitingathe kukonzanso ubweya koma tikhoza kupanga zinthu kuchokera ku ubweya wobwezerezedwanso zomwe sizinaganiziridwe kale," adatero Kit Parker, Pulofesa wa Tarr Family wa Bioengineering ndi Applied Physics ku SEAS ndi akuluakulu. wolemba pepala.“Zotsatira za kusungika kwa zinthu zachilengedwe ndizodziwikiratu.Pokhala ndi mapuloteni opangidwanso ndi keratin, titha kuchita zambiri, kapena zochulukirapo, kuposa zomwe zakhala zikumeta nyama mpaka pano, ndipo, potero, kuchepetsa kuwononga chilengedwe kwa makampani opanga nsalu ndi mafashoni.
Kafukufukuyu adasindikizidwa mu Nature Materials.
Chinsinsi cha luso losintha mawonekedwe a keratin ndi kapangidwe kake kapamwamba, atero a Luca Cera, mnzake wa postdoctoral ku SEAS komanso wolemba woyamba wa pepalalo.
Unyolo umodzi wa keratin umakonzedwa kuti ukhale ngati kasupe wotchedwa alpha-helix.Awiri mwa maunyolo amenewa amapotana kuti apange chinthu chotchedwa koyilo yopindika.Zambiri mwa zokhotakhotazi zimasonkhanitsidwa kukhala ma protofilaments ndipo pamapeto pake ulusi waukulu.
"Kapangidwe ka alpha helix ndi zomangira zolumikizirana zimapatsa zinthuzo mphamvu komanso kukumbukira mawonekedwe," adatero Cera.
Ulusi ukatambasulidwa kapena kukhudzidwa ndi chokondoweza china, zomangira zokhala ngati masika zimasunthika, ndipo zomangira zimakhazikika ndikupanga ma beta okhazikika.Ulusiwo umakhalabe pamenepo mpaka utayambika kuti ubwererenso mu mawonekedwe ake oyamba.
Kuti awonetse njirayi, ofufuzawo adasindikiza mapepala a keratin a 3D mumitundu yosiyanasiyana.Iwo anakonza zakuthupi mawonekedwe okhazikika - mawonekedwe omwe adzabwerera nthawi zonse akayambitsa - pogwiritsa ntchito yankho la hydrogen peroxide ndi monosodium phosphate.
Chikumbukirocho chikakhazikitsidwa, pepalalo likhoza kukonzedwanso ndikupangidwa kukhala mawonekedwe atsopano.
Mwachitsanzo, pepala limodzi la keratin linapindidwa kukhala nyenyezi yovuta ya origami monga mawonekedwe ake osatha.Chikumbukirocho chikakhazikitsidwa, ofufuzawo adayika nyenyeziyo m'madzi, pomwe idawululidwa ndikukhala yosasunthika.Kufuma apo, ŵakaŵika chisalu chira mu chubu chakukolerana.Likawuma, pepalalo limatsekeredwa ngati chubu chokhazikika komanso chogwira ntchito.Kuti asinthe ndondomekoyi, amabwezeretsa chubucho m'madzi, pomwe amachikuta ndikuchipindanso kukhala nyenyezi ya origami.
"Njira ziwirizi zosindikizira za 3D ndikuyika mawonekedwe ake osatha zimalola kupanga mawonekedwe ovuta kwambiri okhala ndi mawonekedwe mpaka pamlingo wa micron," adatero Cera."Izi zimapangitsa kuti zinthuzo zikhale zoyenera kugwiritsidwa ntchito mosiyanasiyana kuchokera ku nsalu kupita ku uinjiniya wa minofu."
"Kaya mukugwiritsa ntchito ulusi ngati uwu kuti mupange ma brassiere omwe kukula kwake kwa chikho ndi mawonekedwe ake kumatha kusinthidwa tsiku lililonse, kapena mukuyesera kupanga nsalu zochiritsira zachipatala, mwayi wa ntchito ya Luca ndi waukulu komanso wosangalatsa," adatero Parker."Tikupitiriza kuganizanso za nsalu pogwiritsa ntchito mamolekyu achilengedwe monga mabakiteriya a uinjiniya monga momwe sanagwiritsire ntchito kale."
Nthawi yotumiza: Sep-21-2020