Hoʻokuʻu ʻia ka X-ray e nā electrons manuahi e hoʻopili ana i kahi mea van der Waals.Loaʻa: Technion - Israel Institute of Technology
Ua hoʻomohala ka poʻe noiʻi ʻenehana i nā kumu radiation kūpono e manaʻo ʻia e alakaʻi i nā holomua i ka lāʻau lapaʻau a me nā wahi ʻē aʻe.Ua hoʻomohala lākou i nā kumu radiation kūpono e hiki ke pani i nā keʻena pipiʻi a paʻakikī i hoʻohana ʻia no ia mau hana.Hoʻopuka ka mea hana i manaʻo ʻia i ka radiation hoʻomalu ʻia me kahi kikoʻī haiki hiki ke hoʻolohe ʻia me ka hoʻonā kiʻekiʻe, ma kahi haʻahaʻa haʻahaʻa.ʻO nā mea i ʻike ʻia e alakaʻi i nā holomua ma nā ʻano ʻano like ʻole, me ka nānā ʻana i nā kemika a me nā mea olaola, nā kiʻi lāʻau lapaʻau, nā lako X-ray no ka nānā ʻana i ka palekana, a me nā hoʻohana ʻē aʻe o nā kumu X-ray pololei.

Ua paʻi ʻia ma ka puke pai Nature Photonics, ua alakaʻi ʻia ke aʻo ʻana e Professor Ido Kaminer a me kāna haumāna haku ʻo Michael Shentcis ma ke ʻano he hui pū me kekahi mau keʻena noiʻi ma ka Technion: the Andrew and Erna Viterbi Faculty of Electrical Engineering, the Solid State Institute, ka Russell Berrie Nanotechnology Institute (RBNI), a me ka Helen Diller Center for Quantum Science, Matter and Engineering.

Hōʻike ka pepa noiʻi i kahi nānā hoʻokolohua e hāʻawi ana i ka hōʻoia-o-manaʻo mua no nā kumu hoʻohālike i kūkulu ʻia i nā makahiki he ʻumi i hala i loko o ke ʻano o nā ʻatikala constitutive.Ua ʻike ʻia ka ʻatikala mua ma ke kumuhana ma Nature Photonics.Ua kākau ʻia e Prof. Kaminer i kāna postdoc ma MIT, ma lalo o ka mākaʻikaʻi a Prof. Marin Soljacic lāua ʻo Prof. John Joannopoulos, ua hōʻike ʻia kēlā pepa i ka manaʻo pehea e hiki ai i nā mea ʻelua-dimensional ke hana i nā kukui X.Wahi a Prof. Kaminer, "ʻo ia ʻatikala ka hoʻomaka ʻana o kahi huakaʻi i nā kumu hoʻoheheʻe e pili ana i ka physics kūʻokoʻa o nā mea ʻelua-dimensional a me kā lākou hui like ʻole - heterostructures.Ua kūkulu mākou ma luna o ka theoretical breakthrough mai kēlā ʻatikala e hoʻomohala i kahi ʻatikala o ka hahai ʻana, a i kēia manawa, hauʻoli mākou e hoʻolaha i ka ʻike hoʻokolohua mua i ka hana ʻana o ka radiation X-ray mai ia mau mea, ʻoiai e hoʻomalu pono ana i nā ʻāpana radiation. .”

ʻO nā mea ʻelua-dimensional he mau hale hana ʻokoʻa i lawe i ke kaiāulu ʻepekema e ka ʻino a puni ka makahiki 2004 me ka hoʻomohala ʻana o ka graphene e nā physicists Andre Geim lāua ʻo Konstantin Novoselov, ka mea i lanakila ma hope i ka makana Nobel ma Physics ma 2010. mānoanoa ʻātoma hoʻokahi i hana ʻia mai nā ʻātoma kalapona.Ua hana ʻia nā hale graphene mua e nā Nobel laureates ʻelua ma ka ʻili ʻana i nā ʻāpana lahilahi o ka graphite, ka "mea kākau" o ka penikala, me ka hoʻohana ʻana i ka duct tape.Ua ʻike nā kānaka ʻepekema ʻelua a me nā mea noiʻi ma hope mai he mau waiwai kūʻokoʻa ko ka graphene i ʻokoʻa i nā waiwai graphite: ikaika nui, ʻaneʻane piha ke aniani, conductivity uila, a me ka hiki ke hoʻouna i nā kukui e hiki ai i ka hoʻokuʻu ʻana i ka radiation - kahi ʻano pili i kēia ʻatikala.ʻO kēia mau hiʻohiʻona kūʻokoʻa e hana i ka graphene a me nā mea ʻelua-dimensional ʻē aʻe e hoʻohiki ana no nā hanauna e hiki mai ana o nā kemika a me nā mea ʻike olaola, nā cell solar, semiconductors, monitors, a me nā mea hou aku.

'O Johannes Diderik van der Waals, ka mea i lanakila i ka Nobel Prize in Physics ma mua o ho'okahi haneri makahiki ma mua, i ka makahiki 1910. 'O nā mea i kapa 'ia ma hope ona—vdW material—ke kumu o Ka noiʻi a Prof. Kaminer.He laʻana nō hoʻi ʻo Graphene o kahi mea vdW, akā ua ʻike ka noiʻi hou i kēia manawa ua ʻoi aku ka pono o nā mea vdW holomua ʻē aʻe no ke kumu o ka hana ʻana i nā kukui X.Ua hana nā mea noiʻi Technion i nā mea vdW like ʻole a hoʻouna i nā kukui electron ma o lākou ma nā kihi kikoʻī i alakaʻi i ka hoʻokuʻu ʻana i ka X-ray ma ke ʻano hoʻomalu a pololei.Eia kekahi, ua hōʻike ka poʻe noiʻi i ka hiki ke kūpono o ka spectrum radiation i ka hoʻonā ʻike ʻole ʻia, me ka hoʻohana ʻana i ka maʻalahi i ka hoʻolālā ʻana i nā ʻohana o nā mea vdW.

Aia ka ʻatikala hou a ka hui noiʻi i nā hopena hoʻokolohua a me nā manaʻo hou e hāʻawi pū ana i kahi hōʻoia-o-manaʻo no ka noi hou ʻana o nā mea ʻelua-dimensional ma ke ʻano he ʻōnaehana paʻa e hoʻopuka i ka radiation hoʻomalu a pololei.

"ʻO ka hoʻokolohua a me ke kumumanaʻo a mākou i hoʻomohala ai e wehewehe he mea nui ia i ke aʻo ʻana i ka pili ʻana o nā mea māmā a wehe i ke ala no nā noi like ʻole i ka X-ray imaging (medical X-ray, no ka laʻana), X-ray spectroscopy i hoʻohana ʻia. e hōʻike i nā mea, a me nā kumu kukui quantum e hiki mai ana i ke aupuni X-ray," wahi a Prof. Kaminer.