He hangarau whakamīharo, he maha hoki ngā whakamahinga o te tā 3D. Heoi, tae noa mai ki tēnei wā, kotahi te mea kua whakawhāitihia ki a ia – ko te rahi o te pūreretā 3D.
Tērā pea ka huri wawe tēnei. Kua whakawhanakehia e te tīma o UC San Diego tētahi pahuka ka taea te whakawhanui tae atu ki te 40 ngā wā o tōna rahi taketake.
"I roto i te ahumahi hou, ko te herenga whānui ko te iti iho o ngā wāhanga i hangaia mā te whakamahi i ngā tukanga ahumahi tāpiri, tango rānei (pēnei i ngā mīhini hurihuri, ngā mira, ngā pūreretā 3D rānei) i ngā mīhini tonu e hanga ana i aua wāhanga. Kua mīhinihia, kua herea, kua whakarewahia, kua whakapirihia rānei hei hanga i ngā hanganga nunui ake."
"Kua whakawhanakehia e mātou he kapia prepolymer pahuka mō te hanga tāpiritanga peita ka taea te whakawhanui i muri i te tānga hei whakaputa i ngā wāhanga tae atu ki te 40 ngā wā o te rahinga taketake. He maha ngā hanganga e whakaputa ana i ēnei."
Tuatahi, i whiriwhiria e te tīma tētahi monomer hei poraka hanga mō te kapia polymer: 2-hydroxyethyl methacrylate. Kātahi ka kitea e rātou te kukū tino pai o te photoinitiator me tētahi kaihopu pupuhi e tika ana hei whakakotahi me te 2-hydroxyethyl methacrylate. Whai muri i ngā whakamātautau maha, i whakatau te tīma ki tētahi kaihopu pupuhi kore-tūturu e whakamahia whānuitia ana me ngā polymer e ahu mai ana i te polystyrene.
I muri i te whiwhinga o te kapia photopolymer whakamutunga, ka tāia e te tīma 3D ētahi hoahoa CAD māmā, ā, ka whakamahanatia ki te 200°C mō ngā meneti tekau. I whakaatuhia e ngā hua whakamutunga kua whānui te hanganga mā te 4000%.
E whakapono ana ngā kairangahau ka taea te whakamahi i te hangarau i ēnei rā i roto i ngā tono māmā pēnei i ngā papa rererangi, i ngā taputapu āwhina pōtae rānei, tae atu ki ngā tono rererangi, pūngao, hangahanga me te hauora. I whakaputaina te rangahau ki roto i te ACS Applied Materials & Interface.
Wā tuku: 19 Paenga-whāwhā 2023