Masana kimiyya sun ɓullo da wani dandali don harhada abubuwan nanosized, ko “nano-objects,” na nau'ikan iri iri-iri - inorganic ko Organic - cikin tsarin 3-D da ake so.Ko da yake an yi nasarar yin amfani da haɗin kai (SA) don tsara nau'ikan nanomaterials iri-iri, tsarin ya kasance na musamman musamman na tsarin, yana samar da tsari daban-daban dangane da ainihin abubuwan kayan.Kamar yadda aka ruwaito a cikin wata takarda da aka buga a yau a cikin Nature Materials, za a iya amfani da sabon tsarin nanofabrication na DNA-programmable don tsara nau'ikan kayan 3-D iri ɗaya a cikin nanoscale (biliyoyinths na mita), inda na musamman na gani, sinadarai. , da sauran kaddarorin suna fitowa.
"Daya daga cikin manyan dalilan da ya sa SA ba dabarar zabi ba ce don aikace-aikacen aikace-aikace shine cewa tsarin SA iri ɗaya ba za a iya amfani da shi ba a cikin nau'ikan kayan aiki iri ɗaya don ƙirƙirar tsararrun 3-D iri ɗaya daga nanocomponents daban-daban," in ji marubucin Oleg Gang. , Shugaban Ƙungiyar Nanomaterials Soft da Bio Nanomaterials a Cibiyar Nanomaterials Aiki (CFN) - Ofishin Ma'aikatar Makamashi ta Amurka (DOE) Ofishin Mai Amfani da Kimiyya a Cibiyar Nazarin Kasa ta Brookhaven - kuma farfesa na Injiniyan Kimiyya da Kimiyyar Kimiyya da Kimiyyar Materials Yin Karatu a Columbia Engineering."A nan, mun ƙaddamar da tsarin SA daga kaddarorin kayan ta hanyar zayyana tsayayyen firam ɗin DNA na polyhedral waɗanda za su iya ɗaukar abubuwa daban-daban na inorganic ko nano-abubuwa, gami da karafa, semiconductor, har ma da sunadarai da enzymes."
Masanan kimiyya sun ƙera firam ɗin DNA na roba a cikin siffar cube, octahedron, da tetrahedron.A cikin firam ɗin akwai “makamai” na DNA waɗanda kawai abubuwan nano tare da jerin DNA ɗin da zasu iya ɗaure su.Wadannan voxels na kayan abu - hadewar tsarin DNA da nano-abu - su ne tubalan ginin da za a iya yin sifofin 3-D na macroscale.Firam ɗin suna haɗa juna ba tare da la'akari da irin nau'in nano-abu a ciki (ko a'a) bisa ga ƙarin jerin abubuwan da aka lulluɓe su da su ba.Ya danganta da siffar su, firam ɗin suna da adadi daban-daban na tsaye kuma don haka suna samar da tsari daban-daban.Duk wani abu-nano-abun da aka shirya a cikin firam ɗin yana ɗaukar takamaiman tsarin firam ɗin.
Don nuna tsarin haɗin gwiwar su, masanan kimiyya sun zaɓi ƙarfe (zinariya) da semiconducting (cadmium selenide) nanoparticles da furotin na kwayan cuta (streptavidin) azaman inorganic da nano-abubuwan da za a sanya su a cikin firam ɗin DNA.Na farko, sun tabbatar da amincin firam ɗin DNA da samuwar voxels na kayan abu ta hanyar yin hoto tare da microscopes na lantarki a CFN Electron Microscope Facility da Cibiyar Van Andel, wanda ke da rukunin kayan aikin da ke aiki a yanayin yanayin cryogenic don samfuran halitta.Daga nan sai suka binciki tsarin lattice na 3-D a Coherent Hard X-ray Scattering and Complex Materials Watsa katako na National Synchrotron Light Source II (NSLS-II) - wani DOE Ofishin Mai Amfani da Kimiyya a Brookhaven Lab.Injiniya Columbia Bykhovsky Farfesa na Injiniyan Chemical Sanat Kumar da ƙungiyarsa sun yi ƙirar ƙididdiga suna bayyana cewa tsarin gwajin gwaji da aka lura (dangane da sifofin watsawa na x-ray) sun kasance mafi kwanciyar hankali masu ƙarfi waɗanda kayan voxels zasu iya samarwa.
"Wadannan voxels na kayan aiki suna ba mu damar fara amfani da ra'ayoyin da aka samo daga atoms (da kwayoyin halitta) da lu'ulu'u da suke samar da su, da kuma jigilar wannan ilimi mai zurfi da bayanai zuwa tsarin sha'awa a nanoscale," in ji Kumar.
Daliban Gang a Columbia daga nan sun nuna yadda za a iya amfani da dandalin taro don sarrafa ƙungiyoyin nau'ikan abubuwa guda biyu tare da ayyukan sinadarai da na gani.A cikin wani yanayi, sun haɗa nau'ikan enzymes guda biyu, suna ƙirƙirar tsararrun 3-D tare da babban marufi.Kodayake enzymes sun kasance ba su canzawa ba tare da sinadarai ba, sun nuna kusan ninki huɗu a cikin ayyukan enzymatic.Ana iya amfani da waɗannan “nanoreactors” don sarrafa abubuwan da suka faru da kuma ba da damar ƙirƙira kayan aikin sinadarai.Don nunin kayan gani, sun haɗa launuka daban-daban guda biyu na ɗigogi masu yawa - ƙananan nanocrystals waɗanda ake amfani da su don yin nunin talabijin tare da cikakken launi da haske.Hotunan da aka ɗauka tare da na'urar hangen nesa mai haske sun nuna cewa ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ya kiyaye tsabtar launi a ƙasa da iyakacin iyaka (tsawon tsayi) na haske;wannan kadarorin na iya ba da damar haɓaka ƙuduri mai mahimmanci a cikin nunin nuni da fasahohin sadarwa na gani.
"Muna bukatar mu sake tunani yadda za a iya samar da kayan da kuma yadda suke aiki," in ji Gang.“Sake fasalin kayan abu bazai zama dole ba;kawai tattara kayan da ake dasu ta sabbin hanyoyi na iya haɓaka kaddarorin su.Mai yuwuwa, dandalin mu na iya zama fasaha mai ba da damar 'bayan masana'antar bugu na 3-D' don sarrafa kayan a ƙananan ma'auni kuma tare da nau'ikan kayan iri da ƙira.Yin amfani da wannan hanyar don ƙirƙirar lattices na 3-D daga abubuwan nano-abun da ake so na nau'ikan kayan abu daban-daban, haɗa waɗanda ba za a yi la'akari da su ba, na iya kawo sauyi na nanomanufacturing. "
Abubuwan da DOE/Brookhaven National Laboratory suka bayar.Lura: Ana iya gyara abun ciki don salo da tsayi.
Sami sabbin labarai na kimiyya tare da wasiƙun imel na ScienceDaily kyauta, sabuntawa kullum da mako-mako.Ko duba sabbin labarai na sa'o'i a cikin mai karanta RSS ku:
Faɗa mana abin da kuke tunani game da ScienceDaily - muna maraba da maganganu masu kyau da mara kyau.Kuna da matsala ta amfani da rukunin yanar gizon?Tambayoyi?
Lokacin aikawa: Jul-04-2022