A noiʻi hui haku o Ph.D haumāna Kento Katairi a me Associate Professor Masayoshi Ozaki o ka Graduate School o 'enekinia, Osaka University, Iapana, a me Professor Toruo Iriya mai ka Research Center no Deep Earth Dynamics o Ehime University, a me na mea e ae, ua wehewehe i ka. ka ikaika o ke daimana nano-polycrystalline i ka wā o ka deformation kiʻekiʻe.

Ua hoʻopaʻa ʻia ka hui noiʻi i nā crystallites me ka nui o nā ʻumi nanometer e hana i daimana i loko o kahi mokuʻāina "nanopolycrystalline", a laila hoʻopili i ke kaomi ultra-kiʻekiʻe iā ia e noiʻi i kona ikaika.Ua hana ʻia ka hoʻokolohua me ka hoʻohana ʻana i ka laser XII laser me ka mana puka pulse nui loa ma Iapana.ʻIke ʻia i ka wā e hoʻohana ʻia ai ke kaomi kiʻekiʻe o 16 miliona mau ea (ʻoi aku ma mua o 4 mau manawa o ke kaomi o ke kikowaena o ka honua), e hoʻemi ʻia ka nui o ke daimana i lalo o ka hapalua o kona nui kumu.

ʻO ka ʻikepili hoʻokolohua i loaʻa i kēia manawa e hōʻike ana i ka ikaika o ke daimana nano-polycrystalline (NPD) ʻoi aku ka ʻoi aku ma mua o ka pālua o ko ke daimana aniani maʻamau.Ua ʻike pū ʻia ʻo NPD ka ikaika kiʻekiʻe ma waena o nā mea a pau i noiʻi ʻia i kēia manawa.