Abahanga Babona Magnetic Nanopowder kuri 6G Ikoranabuhanga
Newswise - Abahanga mu bya siyansi bakoze uburyo bwihuse bwo gukora okiside ya epsilon kandi berekana amasezerano yayo kubikoresho bizakurikiraho. Imiterere yihariye ya magnetiki ituma iba kimwe mubikoresho byifuzwa cyane, nko kubisekuruza 6G bizaza byitumanaho ndetse no gufata amajwi arambye. Akazi kasohotse mu kinyamakuru cyitwa Materials Chemistry C, ikinyamakuru cya Royal Society of Chemistry. Okiside ya Iron (III) ni imwe muri oxyde ikwirakwira kwisi. Iboneka cyane nka minerval hematite (cyangwa alpha oxyde oxyde, α-Fe2O3). Ubundi buryo buhamye kandi busanzwe ni maghemite (cyangwa guhindura gamma, γ-Fe2O3). Iyambere ikoreshwa cyane munganda nka pigment itukura, naho iyanyuma nkigikoresho cyo gufata amajwi. Ihinduka ryombi ntiritandukanye gusa muburyo bwa kristaline (oxyde ya alpha-fer ifite syngony ya hexagonal na oxyde ya gamma-fer ifite cubic syngony) ariko nanone muburyo bwa magneti. Usibye ubu buryo bwa oxyde oxyde (III), hari byinshi byahinduwe bidasanzwe nka epsilon-, beta-, zeta-, ndetse nibirahure. Icyiciro gikurura cyane ni epsilon fer oxyde, ε-Fe2O3. Ihinduka rifite imbaraga zo guhatira cyane (ubushobozi bwibikoresho byo kurwanya umurima wa magneti wo hanze). Imbaraga zigera kuri 20 kOe mubushyuhe bwicyumba, ibyo bikaba bigereranywa nibipimo bya magneti bishingiye kubintu bihenze bidasanzwe-isi. Ikigeretse kuri ibyo, ibikoresho bikurura imishwarara ya electromagnetique mu ntera ya sub-terahertz (100-300 GHz) binyuze mu ngaruka za ferromagnetic resonance karemano. Inshuro ya resonance ni kimwe mu bipimo ngenderwaho mu gukoresha ibikoresho mu bikoresho by'itumanaho bidafite insinga - 4G bisanzwe ikoresha megahertz na 5G ikoresha gigahertz mirongo. Hariho gahunda yo gukoresha urwego rwa sub-terahertz nk'urwego rukora mu gisekuru cya gatandatu (6G) ikoranabuhanga ridafite insinga, ritegura kwinjizwa neza mu mibereho yacu guhera mu ntangiriro ya 2030. Ibikoresho bivamo birakwiriye kubyara ibice bihindura cyangwa imiyoboro ya sisitemu kuri iyi radiyo. Kurugero, ukoresheje compte ε-Fe2O3 nanopowders bizashoboka gukora amarangi akurura imiraba ya electromagnetique bityo akingira ibyumba ibimenyetso bidasanzwe, kandi bikarinda ibimenyetso kwifata hanze. Ε-Fe2O3 ubwayo irashobora no gukoreshwa mubikoresho byo kwakira 6G. Epsilon fer oxyde ni uburyo budasanzwe kandi bugoye kubona okiside ya fer. Uyu munsi, ikorwa mubwinshi, hamwe nibikorwa ubwabyo bifata ukwezi. Ibi birumvikana ko byanze bikunze gukoreshwa. Abanditsi b'ubushakashatsi bakoze uburyo bwo kwihutisha synthesis ya epsilon fer oxyde ishobora kugabanya igihe cyo guhuza umunsi umwe (ni ukuvuga gukora cycle yuzuye inshuro zirenga 30 byihuse!) No kongera ubwinshi bwibicuruzwa bivamo . Tekinike iroroshye kubyara, ihendutse kandi irashobora gushyirwa mubikorwa byoroshye muruganda, kandi ibikoresho bisabwa kugirango synthesis - fer na silicon - biri mubintu byinshi kwisi. “Nubwo icyiciro cya epsilon-fer oxyde yabonetse mu buryo bwera kera cyane, mu 2004, ntikirabona inganda zikoreshwa mu nganda bitewe n’ingorabahizi ya synthesis, urugero nk'uburyo bwo gukoresha magnetiki - gufata amajwi. Twashoboye koroshya ikoranabuhanga ku buryo bugaragara, ”ibi bikaba byavuzwe na Evgeny Gorbachev, umunyeshuri wa PhD mu ishami ry'ubumenyi bw'ibikoresho muri kaminuza ya Leta ya Moscou akaba n'umwanditsi wa mbere w'iki gitabo. Urufunguzo rwo gukoresha neza ibikoresho bifite ibimenyetso biranga amateka ni ubushakashatsi mubintu byabo bifatika. Hatabayeho ubushakashatsi bwimbitse, ibikoresho birashobora kwibagirana bidakwiriye imyaka myinshi, nkuko byabaye inshuro zirenze imwe mumateka yubumenyi. Ni cyo kintu cy’ibikoresho abahanga bo muri kaminuza ya Leta ya Moscou bashushanyije, hamwe n’abahanga mu bya fiziki muri MIPT, babyize ku buryo burambuye, byatumye iterambere rigenda neza.
Igihe cyo kohereza: Nyakanga-04-2022 