Yawancin karafa da mahallinsu dole ne a sanya su cikin siraran fina-finai kafin a iya amfani da su a cikin samfuran fasaha kamar na'urorin lantarki, nuni, ƙwayoyin mai, ko aikace-aikacen motsa jiki.Duk da haka, karafa masu “juriya”, gami da abubuwa kamar su platinum, iridium, ruthenium, da tungsten, suna da wahalar juyewa zuwa fina-finai na sirara saboda ana buƙatar matsanancin zafi (sau da yawa sama da digiri 2,000) don ƙafe su.
Yawanci, masana kimiyya suna haɗa waɗannan fina-finai na ƙarfe ta hanyar amfani da hanyoyi irin su sputtering da evaporation na lantarki.Ƙarshen ya haɗa da narkewa da zubar da karfe a yanayin zafi mai zafi da kuma samar da fim na bakin ciki a kan farantin.Duk da haka, wannan hanya ta gargajiya tana da tsada, tana cinye makamashi mai yawa, kuma yana iya zama mara lafiya saboda yawan wutar lantarki da ake amfani da shi.
Ana amfani da waɗannan karafa don yin samfura marasa ƙima, daga semiconductor don aikace-aikacen kwamfuta don nuna fasaha.Platinum, alal misali, shine mahimmin jujjuyawar makamashi da kuzarin ajiya kuma ana la'akari dashi don amfani da na'urorin spintronics.
Lokacin aikawa: Afrilu-26-2023