Cov kws tshawb fawb los ntawm Harvard University John John Paulsen School of Engineering thiab Applied Sciences (SEAS) nyob hauv Massachusetts, tau tsim cov txheej txheem 3D tshuab luam tawm uas siv lub suab tsis ua kom muaj ntau hom viscous kua hauv cov khoom siv ntxiv.
Ib myriad ntawm inks
Inkjet 3D printing siv cov kua kua dej ntawm microliter-rau-nanoliter ntim rau cov khib nyiab; li cas los xij, tus txheej txheem no tsuas yog siv cov viscosity tsawg uas muaj kwv yees li 10 txog 100 zaus siab tshaj qhov dej ntawm qhov dej, raws li txoj kev tshawb fawb. Txoj cai no tawm ntawm 3D printing capabilities ntawm biopolymer tseem ceeb heev thiab cov cell-laden inks siv nyob rau hauv biopharmaceuticals thiab 3D bioprinting raws li cov qab zib biopolymers, xws li zib ntab, uas yog 25,000 npaug tshaj dej.
Tsis tas li ntawd, kev tshawb fawb pom tau tias qhov kua khov khov ua pauv txawv txav nrog qhov kub thiab txias, ua rau nws tsis yooj yim rau kev luam ntawv tsis muaj teeb meem los ntawm kev txo qhov taub.
Los pab kom muaj "cov khoom siv" cov kev tshawb nrhiav, SEAS tshawb nrhiav pab pawg ua tus subwavelength acoustic resonator peev xwm tsim cov kab nrawm heev uas qhib tau cov tub rog uas muaj peev xwm tsim rub zog tshaj "100 zaus lub zog ntawm lub zog (1G) ntawm lub tshuab luam ntawv lub hau - plaub zaug lub zog gravitational nyob rau saum npoo ntawm lub hnub. "
Txws los ntawm drip
Cov soj ntsuam ntawm tau soj ntsuam cov tshuab luam ntawv tshuab luam yeeb ntau ntawm cov ntaub ntawv, xws li zib ntab rau qia-cell inks, ib qho kua xaim hluav taws xob hauv pob txha, ib lub tshuab UV-curable optical adhesive, thiab kua hlau. Lub zog tswj ntawm tus neeg tswj kev ua haujlwm tawm ntawm kev tswj tus kheej ntawm cov kev cai resonator rub tawm txhua qhov kev lag luam tawm ntawm "lub tshuab luam tawm" nrog rau ib daim ntawv tso cai ntawm 800μm rau tsawg dua 65μm nozzle, thiab ejects nws mus rau lub hom phiaj luam ntawv.
Qhov siab tshaj ntawm lub suab tsis muaj zog, qhov loj me me raws li qhov dej, qhov soj ntsuam ntawm pom tau.Thaum ntawd, vim tias lub suab tsis muaj peev xwm kis tau los ntawm kev mob, cov neeg tshawb xyuas ntseeg tias txoj kev nyab xeeb rau kev siv nrog rhiab lom vectors xws li cov hauv hlwb lossis cov nqaijrog.
"Peb lub tshuab yuav tsum muaj feem cuam tshuam rau qhov kev lag luam kws tshuaj," said Jennifer Lewis, Senior Author ntawm daim ntawv thiab Hans Hansorg Wyss professor ntawm Biologically Inspired Engineering ntawm SEAS. "Tiam sis peb ntseeg tias qhov no yuav yog ib qho tseem ceeb rau ntau lub lag luam."
