An riga an san Graphene da ƙarfi sosai, duk da kauri ɗaya ne kawai. To ta yaya za a kara karfi? Ta hanyar juya shi zuwa zanen lu'u-lu'u, ba shakka. Masu bincike a Koriya ta Kudu a yanzu sun kirkiro wata sabuwar hanya ta canza graphene zuwa fina-finan lu'u-lu'u mafi sirara, ba tare da yin amfani da matsa lamba ba.
Graphene, graphite da lu'u-lu'u duk an yi su ne da abubuwa iri ɗaya - carbon - amma bambancin waɗannan kayan shine yadda ake tsara ƙwayoyin carbon da kuma haɗa su tare. Graphene takardar carbon ne mai kauri guda ɗaya kawai, tare da ɗaure mai ƙarfi a tsakanin su a kwance. Graphite an yi shi ne da zanen zanen graphene da aka jera a saman juna, tare da ɗaure mai ƙarfi a cikin kowace takarda amma masu rauni suna haɗa zanen gado daban-daban. Kuma a cikin lu'u-lu'u, atom ɗin carbon suna da alaƙa da ƙarfi ta fuskoki uku, suna ƙirƙirar abu mai wuyar gaske.
Lokacin da aka ƙarfafa haɗin tsakanin yadudduka na graphene, zai iya zama nau'in lu'u-lu'u na 2D wanda aka sani da diamane. Matsalar ita ce, wannan ba shi da sauƙi a yi. Hanya ɗaya tana buƙatar matsananciyar matsananciyar matsananciyar ƙarfi, kuma da zaran an cire wannan matsi ɗin sai abin ya koma graphene. Sauran binciken sun kara atom na hydrogen zuwa graphene, amma hakan yana da wahala a sarrafa abubuwan haɗin.
Don sabon binciken, masu bincike a Cibiyar Kimiyyar Kimiyya (IBS) da Cibiyar Kimiyya da Fasaha ta Ulsan (UNIST) sun musanya hydrogen zuwa fluorine. Manufar ita ce ta hanyar fallasa bilayer graphene zuwa fluorine, yana kusantar da yadudduka biyu kusa da juna, yana haifar da alaƙa mai ƙarfi a tsakanin su.
Tawagar ta fara ne da ƙirƙirar graphene bilayer ta yin amfani da hanyar gwada-da-na-sani ta hanyar shigar da tururin sinadarai (CVD), akan wani sinadari da aka yi da jan karfe da nickel. Bayan haka, sun fallasa graphene zuwa tururi na xenon difluoride. Fluorine a cikin wannan cakuda yana manne da atom ɗin carbon, yana ƙarfafa haɗin gwiwa tsakanin yadudduka na graphene da ƙirƙirar ultrathin Layer na lu'u-lu'u mai walƙiya, wanda aka sani da F-diamane.
Sabon tsari ya fi sauƙaƙa fiye da sauran, wanda yakamata ya sa ya zama mai sauƙin haɓaka. Ultrathin zanen gado na lu'u-lu'u na iya yin ƙarfi, ƙarami kuma mafi sassauƙa na kayan lantarki, musamman a matsayin babban mai gudanarwa mai faɗi.
"Wannan hanya mai sauƙi na fluorination yana aiki a kusa da dakin da zafin jiki da kuma ƙarƙashin ƙananan matsa lamba ba tare da yin amfani da plasma ko wasu hanyoyin kunna gas ba, saboda haka yana rage yiwuwar haifar da lahani," in ji Pavel V. Bakharev, marubucin farko na binciken.
Lokacin aikawa: Afrilu-24-2020