I kekahi manawa i hala aku nei, ua paʻi ka puke Communications Physics i kahi ʻatikala ʻepekema "Harnessing ferroelectric domains for negative capacitance", ʻo nā mea kākau o lākou he physicists Lūkini mai ka Southern Federal University (Rostov-on-Don) Yuri Tikhonov a me Anna Razumnaya, physicists mai ka Farani. Ke Kulanui o Picardy i kapa ʻia ma hope o Jules Verne Igor Lukyanchuk a me Anais Sen, a me ka mea ʻepekema waiwai mai Argonne National Laboratory Valery Vinokur. Ke kamaʻilio nei ka ʻatikala e pili ana i ka hana ʻana i kahi capacitor "hiki ʻole" me ka hoʻopiʻi maikaʻi ʻole, i wānana ʻia i nā makahiki he mau makahiki i hala aku nei, akā ua hoʻokō ʻia i kēia manawa.
Ke hoʻohiki nei ka hoʻomohala ʻana i ka loli i nā kaʻa uila o nā mea semiconductor. ʻO kahi pālua o ka "negative" a me ka capacitor maʻamau me ka uku maikaʻi, i hoʻopili ʻia i ka pūʻulu, e hoʻonui i ka pae uila hoʻokomo ma kahi i hāʻawi ʻia ma luna o ka waiwai nominal i ka mea e pono ai no ka hana ʻana o nā ʻāpana kikoʻī o nā kaapuni uila. I nā huaʻōlelo ʻē aʻe, hiki ke hoʻohana ʻia ka mea hana e kahi volta haʻahaʻa haʻahaʻa, akā ʻo kēlā mau ʻāpana o nā kaapuni (nā poloka) e koi ana i ka hoʻonui ʻana i ka volta e hana ai e loaʻa i ka mana hoʻomalu me ka piʻi ʻana o ka uila me ka hoʻohana ʻana i nā pālua "negative" a me nā capacitors maʻamau. Hoʻohiki kēia e hoʻomaikaʻi i ka pono o ka ikehu o nā kaʻa kaʻa a me nā mea hou aku.
Ma mua o kēia hoʻokō ʻana i nā capacitors maikaʻi ʻole, ua loaʻa kahi hopena like no ka manawa pōkole a ma lalo o nā kūlana kūikawā. Ua piʻi mai nā ʻepekema Lūkini, me nā hoahana mai USA a me Farani, me kahi ʻano paʻa a maʻalahi o nā capacitors maikaʻi ʻole, kūpono no ka hana nui a no ka hana ma lalo o nā kūlana maʻamau.
ʻO ke ʻano o kahi capacitor maikaʻi ʻole i hoʻomohala ʻia e nā physicists he ʻelua ʻāpana i hoʻokaʻawale ʻia, aia kēlā me kēia me nā nanoparticles ferroelectric me ka uku o ka polarity like (ma ka palapala Soviet i kapa ʻia lākou he ferroelectrics). I ko lākou kūlana maʻamau, loaʻa i ka ferroelectrics ka uku kūʻokoʻa, ʻo ia ma muli o nā kāʻei kua hoʻonohonoho ʻia i loko o ka mea. Ua hiki i nā kānaka ʻepekema ke hoʻokaʻawale i nā nanoparticles me ka uku like i ʻelua mau wahi kino o ka capacitor - kēlā me kēia ma kona wahi ponoʻī.
Ma ka palena maʻamau ma waena o nā ʻāpana polar ʻelua, ua ʻike koke ʻia kahi pā i kapa ʻia - kahi wahi o ka hoʻololi polarity. Ua hoʻololi ʻia e hiki ke hoʻoneʻe ʻia kahi pā domain inā hoʻopili ʻia ka volta i kekahi o nā ʻāpana o ka hale. ʻO ka hoʻoneʻe ʻana o ka pā kikowaena i hoʻokahi ʻaoʻao i like me ka hōʻiliʻili ʻana o kahi hoʻopiʻi ʻino. Eia kekahi, ʻoi aku ka nui o ka hoʻopiʻi ʻana o ka capacitor, ʻoi aku ka haʻahaʻa o ka volta ma kāna mau papa. ʻAʻole kēia ka hihia me nā capacitors maʻamau. ʻO ka piʻi ʻana o ka uku e alakaʻi i ka piʻi ʻana o ka volta ma nā papa. Ma muli o ka pili ʻana o ka capacitor maikaʻi ʻole a me ka maʻamau, ʻaʻole e uhai nā kaʻina i ke kānāwai o ka mālama ʻana i ka ikehu, akā alakaʻi i ke ʻano o kahi mea hoihoi i ke ʻano o ka piʻi ʻana o ka volta hāʻawi i nā wahi i makemake ʻia o ka uila uila. . He mea hoihoi ia ke ʻike pehea e hoʻokō ʻia ai kēia mau hopena i nā kaapuni uila.
Source: 3dnews.ru