Tshuab tshiab: 3D printing yuav ua tiav los ntawm cov kab mob bacteria
Roberto Leonardo, tus xib fwb ntawm physics ntawm University of Rome, tau tsim muaj ntau hom me me uas tau siv cov kab mob thiab cov lasers thiab pib tig.
Nano-scale 3D tshuab luam ntawv tsis yog tshiab, tab sis muaj feem xyuam nrog cov ntaub ntawv tseem raug kho tshiab. Ib qho ntawm cov khoom hu ua "ob-photon lithography" tau nrov, thiab ntau cov qauv siv aesthetic tau tsim siv cov tshuab no, nrog rau kev sib tw ua me me, qhov chaw shuttles, thiab txawm qub Roman sculptures.
Txawm hais tias cov kws tshawb fawb kuj xav siv cov cuab yeej no mus rau thaj chaw kho mob, kom deb li deb, ntawm qhov kev xam pom txhua yam, cov ntsiab lus tau raug txwv. Piv txwv, ib pab pawg neeg tshawb xyuas tau siv 3D luam tawm los ua ib qho nanodevice hu ua "shark" uas tau txav chaw nyob hauv ib thaj chaw magnetic, thaum lwm pab pawg neeg tshawb fawb ua hauj lwm los tsim cov qauv geometries tshiab kom nce tau qhov kev vam meej ntawm cov tshuaj yeeb yaj kiab.
Yav dhau los kev tshawb fawb tau pov thawj tias nanotechnology muaj kev muaj peev xwm zoo nyob hauv cov kev siv, thiab cov khoom luam tawm muaj kev mob tsis txuam nrog kev kho mob. Cov kws tshawb fawb hauv University of Rome siv qhov kev tsim no los tsim cov micromotors powered los ntawm cov kab mob hauv lub cev. Nyob hauv txoj kev sim, Leonardo pawg neeg tau pom tias 36 lub tshuab fais fab ua hauj lwm hauv kev sib koom ua ke, qhia tias seb lub tshuab 3D printing micromachines yog dabtsi.
Leonardo hais tias siv cov cuab yeej niaj hnub xws li nanotechnology thiab microfabrication, soj ntsuam ntawm yuav ua zoo dua thiab zoo dua micromachines. Nrog cov 3D luam ob lub photon lithography system, txhua hom yuav tsum luam tawm, tab sis, yog hais tias koj xav mechanical suab khiav mus autonomously, koj yuav tsum nrhiav lub hwj chim. Ib tug neeg kho tshuab tau tsim los ntawm cov khoom siv roj hmab, nrog rau kev sib dhos xws li lub hnab looj tes, siv lub laser los tswj lub cev me me.
Nyob rau hauv lub tshwj xeeb lub cev ua ke qhia los ntawm Leonardo experimental pab neeg, cov kws tshawb fawb siv cov noob caj noob ces engineered E. coli. Nyob rau hauv cov qauv me me, txhua lub cav yog etched nrog 15 micro-Chambers. Thaum cov neeg tshawb xyuas poob ib tug kab mob ntawm cov kab mob uas muaj phav phav dej, lawv yuav ua luam dej rau hauv ib qho ntawm ib qho, nrog rau flagella. txheej. Nyob rau hauv kev sib koom ua ke, cov kab mob txia ua ib lub pob "kiv cua" me me, tig cov 3D micromotor zoo li lub laub dej khiav.
Txij li cov hloov kho E. coli kuj muaj nws tus kheej style thiab kev coj cwj pwm, cov neeg soj ntsuam kuj yog txhob txwm ua ib lub kauj ruam me me ntawm lub cev, nws tilting ntawm lub kaum-degree lub pob mus rau qhov siab tshaj lub zog, thiab cuam nws rau hauv lub micro-Chamber ua lub koob thaij dawb ua dai sab nraum lub chamber rau propel qhov txav ntawm ib lub cav rotor nkaus xwb. Qhov teeb meem ntawm qhov kev ua no yog tias kev tawm tsam los ntawm cov kab mob yog sib quas ntus, thiab nws yuav siv sijhawm li 1 feeb rau lub cav kom tig mus ib zaug, thiab qee zaus qhov kev taw qhia ntawm lub zog ntawm qee qhov rings yog rov qab, uas yog qhov tsis muaj txiaj ntsig.
Yuav kom sib sau ua ke thiab tswj cov kab mob, cov kws tshawb fawb pom kev tsav lub cev nrog lub laser txhua 10 feeb, thiaj li hais tias txhua feem hauv lub cev tuaj yeem koom ua ke. Yav tag los, lub zej zog tseem siv los siv hluav taws xob los yog cov khoom hlau sib nqus kom tswj cov kab mob, tab sis nws kim heev thiab tsim kev lag luam. Kev siv lub teeb kom tswj tau lub cev muaj zog yog yooj yim rau kev khiav lag luam thiab tsis tshua muaj nqi, thiab tso cai rau cov kab mob ua rau cov teeb meem sib txawv nyob hauv cheeb tsam.
Leonardo taw tes hais tias lub hauv paus ntawm lub neej yog lub hlwb, thiab kev kuaj mob yuav pib los ntawm kev sau cov tib neeg lub hlwb. Tam sim no, tib neeg tshawb fawb yog qhov pib xwb. Cov kws tshawb fawb tau ib leeg ua rau kev ua haujlwm tsis tu ncua hauv kev ua haujlwm ntawm physics, engineering, biology, thiab lwm yam. Txawm li cas los, los ntawm kev xav ntawm nanotechnology, yog tias sib txawv ntawm kev tshawb fawb tau muab tso ua ke, tib neeg muaj peev xwm tau txais txiaj ntsim tshaj plaws.
