Ua ʻike mua ʻia ʻo Graphene no ka ikaika nui, ʻoiai he hoʻokahi wale nō ka mānoanoa atom. No laila pehea e hoʻoikaika ʻia ai? Ma ka hoʻohuli ʻana iā ia i ʻāpana daimana, ʻoiaʻiʻo. Ua hoʻomohala nā mea noiʻi ma South Korea i kahi ala hou no ka hoʻololi ʻana i ka graphene i nā kiʻi daimana lahilahi loa, me ka ʻole o ka hoʻohana ʻana i ke kaomi kiʻekiʻe.
Hana ʻia ka Graphene, graphite a me ke daimana i nā mea like - carbon - akā ʻo ka ʻokoʻa ma waena o kēia mau mea ʻo ia ke ʻano o ka hoʻonohonoho ʻana a hoʻopaʻa ʻia nā ʻātoma kalapona. He ʻāpana kalapona ʻo Graphene hoʻokahi wale nō ʻātoma mānoanoa, me nā paʻa paʻa ma waena o lākou ma ke ākea. Hana ʻia ka Graphite me nā pepa graphene i hoʻopaʻa ʻia ma luna o kekahi me kekahi, me nā mea paʻa ikaika i loko o kēlā me kēia pepa akā nā mea nāwaliwali e pili ana i nā ʻāpana like ʻole. A i loko o ke daimana, ʻoi aku ka ikaika o nā ʻātoma kalapona i ʻekolu anana, e hana ana i kahi mea paʻakikī loa.
Ke hoʻoikaika ʻia nā paʻa ma waena o nā papa graphene, hiki ke lilo i ʻano daimana 2D i kapa ʻia ʻo diamane. ʻO ka pilikia, ʻaʻole maʻalahi kēia hana. Pono ke ala hoʻokahi i nā kaomi kiʻekiʻe loa, a ke wehe ʻia kēlā kaomi, hoʻi hou ka mea i ka graphene. Ua hoʻohui ʻia nā haʻawina ʻē aʻe i nā ʻātoma hydrogen i ka graphene, akā he mea paʻakikī ke kāohi i nā mea paʻa.
No ka noiʻi hou, ua hoʻololi nā mea noiʻi ma ka Institute for Basic Science (IBS) a me ka Ulsan National Institute of Science and Technology (UNIST) i ka hydrogen no ka fluorine. ʻO ka manaʻo ʻo ia ma ka wehe ʻana i ka bilayer graphene i ka fluorine, hoʻopili ia i nā papa ʻelua i kahi pili, e hana ana i nā paʻa ikaika ma waena o lākou.
Ua hoʻomaka ka hui ma ka hana ʻana i ka bilayer graphene me ka hoʻohana ʻana i ke ʻano hoʻāʻo a me ka ʻoiaʻiʻo o ka hoʻoheheʻe ʻana i ka mahu (CVD), ma kahi pani i hana ʻia me ke keleawe a me ka nickel. A laila, hōʻike lākou i ka graphene i nā mahu o xenon difluoride. Pili ka fluorine i loko o ia hui ʻana i nā ʻātoma kalapona, e hoʻoikaika ana i nā paʻa ma waena o nā papa graphene a hana i kahi papa ultrathin o ka daimana fluorinated, i kapa ʻia ʻo F-diamane.
ʻOi aku ka maʻalahi o ke kaʻina hana hou ma mua o nā mea ʻē aʻe, pono e maʻalahi ka hoʻonui ʻana. Hiki i nā ʻāpana daimana ultrathin ke hana i nā ʻāpana uila ʻoi aku ka ikaika, liʻiliʻi a maʻalahi hoʻi, ʻoiai he semi-conductor ākea ākea.
"Ke hana nei kēia ʻano fluorination maʻalahi i ka mahana kokoke i ka lumi a ma lalo o ke kaomi haʻahaʻa me ka ʻole o ka hoʻohana ʻana i ka plasma a i ʻole nā hana hoʻoulu kinoea, no laila e hōʻemi ana i ka hiki ke hana i nā hemahema," wahi a Pavel V. Bakharev, ka mea kākau mua o ka noiʻi.
Ka manawa hoʻouna: Apr-24-2020