Menene graphene?
Graphene sabon abu ne mai girman saƙar zuma mai girman saƙar zuma da aka kafa ta kusa da tattarawar ƙwayoyin carbon mai Layer Layer guda ɗaya.A wasu kalmomi, abu ne na carbon mai girma biyu kuma yana cikin nau'in nau'in heteromorphic na jikin carbon.Haɗin kwayoyin halitta na graphene shine kawai 0.142 nm, kuma tazarar jirgin saman crystal shine kawai 0.335 nm
Mutane da yawa ba su da ra'ayi na naúrar nano.Nano raka'a ce mai tsayi.Ɗayan nano yana da kusan 10 zuwa a debe murabba'in murabba'in 9.Ya fi guntu da yawa kuma yana da girma kamar guda huɗu.A kowane hali, ba za mu taba ganin wani abu mai girman 1 nm da idanunmu tsirara ba.Dole ne mu yi amfani da microscope.Gano nanotechnology ya kawo sabbin fannonin ci gaba ga ɗan adam, kuma graphene shima fasaha ce mai mahimmancin wakilci.
Har ya zuwa yanzu, graphene shine mafi sirin sinadari da aka samu a duniyar dan adam.Kaurinsa yana da kauri kamar zarra ɗaya kawai.A lokaci guda kuma, shine mafi ƙarancin abu kuma mafi kyawun jagorar lantarki a duniya.
Mutane da kuma graphene
Koyaya, tarihin ɗan adam da graphene a zahiri ya daɗe fiye da rabin ƙarni.A farkon 1948, masana kimiyya sun gano wanzuwar graphene a cikin yanayi.Duk da haka, a wancan lokacin, yana da wuya matakin kimiyya da fasaha ya iya kwasfa graphene daga tsarin mai layi ɗaya, don haka waɗannan graphene an tattara su tare, suna nuna yanayin graphite.Kowane mm 1 na graphite ya ƙunshi kusan yadudduka miliyan 3 na graphene.
Amma na dogon lokaci, graphene an yi la'akari da cewa babu shi.Wasu suna ganin wani abu ne kawai da masana kimiyya ke zato, domin idan da gaske akwai graphene, me yasa masana kimiyya ba za su iya cire shi kadai ba?
Har zuwa 2004, masana kimiyya Andre Geim da Konstantin Volov daga Jami'ar Manchester a Burtaniya sun sami hanyar raba graphene.Sun gano cewa idan aka cire faifan graphite daga ma'aunin graphite mai ma'ana sosai, to bangarorin biyu na faifan graphite sun makale da wani tef na musamman, sannan tef din ya yage, wannan hanyar za ta iya samun nasarar raba filayen graphite.
Bayan haka, kawai kuna buƙatar sake maimaita ayyukan da ke sama gabaɗaya don sanya takardar graphite da ke hannunku ta zama sirara da ƙaranci.A ƙarshe, zaku iya samun takarda na musamman wanda ya ƙunshi ƙwayoyin carbon kawai.Abubuwan da ke kan wannan takardar ainihin graphene ne.Andre Geim da Konstantin Novoselov suma sun sami lambar yabo ta Nobel don gano graphene, kuma wadanda suka ce babu graphene an buge su a fuska.Don haka me yasa graphene zai iya nuna irin waɗannan halaye?
Graphene, sarkin kayan
Da zarar an gano graphene, gaba daya ya canza tsarin binciken kimiyya a duk duniya.Domin graphene ya tabbatar da cewa shi ne mafi siraɗin abu a duniya, gram ɗaya na graphene ya isa ya rufe daidaitaccen filin ƙwallon ƙafa.Bugu da kari, graphene shima yana da kyakkyawan yanayin zafi da lantarki.
graphene mai tsaftataccen lahani na kyauta guda ɗaya yana da ƙarfi mai ƙarfi na thermal conductivity, kuma ƙarancin zafinsa ya kai 5300w / MK (w / m · digiri: ɗauka cewa kauri ɗaya-Layer na kayan shine 1m da bambancin zazzabi tsakanin bangarorin biyu shine 1C, wannan abu zai iya gudanar da mafi yawan zafi ta wurin sararin sama na 1m2 a cikin sa'a guda), Abun carbon ne tare da mafi girman yanayin zafi da aka sani ga ɗan adam.
Siffofin samfur SUNGRAF BRAND
Launin bayyanar Baƙar foda
Abubuwan da ke cikin Carbon% > casa'in da tara
Chip diamita (D50, um) 6 ~ 12
Abun ciki na danshi% <biyu
Girman g / cm3 0.02 ~ 0.08
Lokacin aikawa: Mayu-17-2022