加拿大pc

加拿大pc高等研究院李武课题组在《Physical Review Letters》发表高导热材料的研究进展

来源: 发布时间: 2020-04-28 09:53 点击数: Views

加拿大pcbaowenpingderenwushibaochireliang,danyoushirenmenxiangyaodadaoxiangfandexiaoguo: jisuanjixinpianhuichanshengreliang,bixujinkuaisanfareliang,yimianwenduguogaosunhuaixinpian。zheixuyaojuyoulianghaodedaorexingnengdeteshucailiao。

加拿大pcjianadapcgaodengyanjiuyuanliwuketizu,zaigaodaorecailiaotansuofangmianqudezhongyaoyanjiujinzhan。tamenfaxianjinshudanhuatan(tan)juyouchaogaoredaolv,zaishiwenkeyigaoda1000w/mk,zheigaoyurenheqitayizhidejinshucailiao。yanjiujieguofabiaoyu《wulipinglunkuaibao》[phys. rev. lett. 126, 115901 (2021)],biaotiwei“ultrahigh thermal conductivity of θ-phase tantalum nitride”。lunwendiyizuozheweiketizuashis kunduboshi,tongxunzuozheweiliwuyanjiuyuan,hezuozhebaokuoyangxiaolongboshi,majinlongfuyanjiuyuan(xianweihuazhongkejidaxuejiaoshi),youtadaxuedefengtianlijiaoshou,pududaxuederuan xiulinjiaoshou,weiyenagongyedaxuedej. carreteyanjiuyuanheg. madsenjiaoshou。gaiyanjiugongzuoshoudaoleguojiazirankexuejijinyijishenzhenshikechuangweixuekebujuxiangmudezizhu。

tu: danhuatan,jingangshi,shenhuapengheyinderedaolv。

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加拿大pctongguoxiangjindelilunfenxihejisuanjimoni,liwuketizuhehezuozhezuizhongchenggongdiquedingledanhuatandeliufangjingxiθxiangzheiyangyizhongheshidecailiao。tanshitebieyoulide,yinweijihumeiyourenhebutongdetongweisu。tianrantanzhongjihuyou99.99%shitongweisutan181。danhuatandeliufangjingxiθxiangjuyoujinshuxing,qiteshudeshengzisesanhedianzijiegouyizhiledaoreshengziyuqitashengziyijidianzidexianghuzuoyong,erzhengshizheixiexianghuzuoyongyizhileqitacailiaozhongdedaorexingneng。yinci,θxiangdedanhuatanjiehelejigezhongyaodeyoudian,shiqichengweiyizhongchuangjiludecailiao,qidaorexishushiyindejibei,keyujingangshipimei。zhidezhuyideshi,zaidanhuatanzhongchuanredezhuyaozaitishishengzi,ertongchangjinshuzhongdianzihuizhudaoredaolv。

加拿大pczheixiangyanjiugongzuoshizai“jinshuzhongfanchangshengzishuyun”zheiyifangxiangqianqigongzuojichushangdezuixinyanjiuchengguo。tongchangrenweishiwenfujinjinshuzhongdianziduiredaolvqijueduizhudaogongxian,ershengziduiredaolvdegongxiankeyihulve。erliwuketizufaxianlezaidanzhijinshuwuzhong,jinggeredaolvdegongxiangaoda46w/m-k,zheichengqingleqilorenzshuxianzhugaoyulilunzhizheiyizhangdajishiniandeyiwen。tongshifaxianleqijinggeredaolvzhuyaoshiyoudianshengxianghuzuoyongsuojuedingde,zheiyebutongyufeijianxiexingxianzhishiwenjinggeredaolvdechangshi。jibianzaishiwenxiadianshengouheyenengshiredaolvxiajiang80%,bingdaozhiqiredaolvduiwenduruodeyilaiguanxi[phys. rev. b 99, 020305 (rapid communications) (2019);npj comput. mater. 5, 98 (2019)]。jinshuwudefanchangshengzishuyunxingweigenqidanzhitixinlifangjiegoujinmixiangguan。zaidanzhitixinlifangjiegouzhong,jingtidekongjianqunduichengxingyaoqiushengzizhendongpinlvzaibuliyuanqudegaoduichengdianphehdiansanzhongjianbing,zaishengzisesangexiangtongxingtiaojianxia,zaizheixiediansanshetongdaobeiwanquanyizhi。

shaozaoyuliwuketizuguanyujinshuwudeyanjiu,broidoketizufaxianbutongyusizuguodujinshutanhuawu,wuzutanhuawulidianshengouhesansheyezhudaozhecailiaodejinggeredaolv[phys. rev. lett. 121, 175901 (2018)],sizuhewuzutanhuawudeshengzisesanhedianzijiegouxingzhiwanquanbutong,zaochenglewuzutanhuawudefanchangshengzishuyunxingwei。liwuketizujinyibuyanjiufaxianzheixieguodujinshutanhuawudeshengzisesanhedianzijiegouzhijiancunzaiguanlian,yeyiweizheshijishangzheixietanhuawudeshengzishuyunxingzhiwanquanqujueyudianzijiegou[materials today physics 13, 100214 (2020)]。juyoubutongjingtijiegoudeliuzutanhuawujuyougengduodejiadianzi,qiedouchuyuchengjiantai,feiminengyechuyuchengjiantaihefanjiantaidefenjiedian,duiyingyandaixijuyouhenxiaodetaimidu。zheiyangliuzuyuanzijianxianghuzuoyongbisizuhewuzudouda,tongshifeimimianchuzaiyandaixidaozhilegengdidedianzi-shengzisanshe。yuanzijianqiangxianghuzuoyonghewudedayuanzizhiliang(xiangduiyumu)zaochengledadeshengxuezhi-guangxuezhishengzidaixi,zheijinyibuyizhileshengzi-shengzisanshe。zuizhongdaozhitanhuawu(wc)dejinggeredaolvzaishiwenkeyigaoda160w/mk,shidianziredaolvdesanbei,yuangaoyuqitatanhuawu。

shangshugongzuobiaomingdianzijiegougenjiadianzigeshujinmixiangguan,shouciqifa,liwuketizuyanjiugenliuzutanhuawujuyouxiangtongshumujiadianzidewuzudanhuawu,bingzuizhongchenggongzhaodaotanzheiyihuahewu,qijuyoubiwcgengdidedianzijitongweisusanshe,zuizhongjuyouchaogaodejinggeredaolv。

liwuketizuzai“fanchangshengzishuyun”fangmiandelingwaiyigegongzuoshifaxianshimoxizhongcunzaiyizhong“jianjiededianshengxianghuzuoyong”jizhi[materials today physics xx, 100315 (2020),]。zhudaoshimoxiredaolvdezashengziyouyufansheduichengxingxianzhibingbunengbeidianzizhijiesanshe,yincirenmenbingbuqidaidianshengsanshezuoyonghuiyingxiangshimoxideshengzishuyunxingzhi。danyouqitashengxuezhi(tahela)shengzizuoweimeijiedezashengzihedianzizhijiandejianjieouhezuoyongnenggoushideshimoxideredaolvjibianzaishiwenyenengxiajianggaoda21%。zheizhongdutedejianjiedianshengzuoyongzhisuoyihuiqiyouxiaozuoyong,shiyinweishimoxidesanshengzisansheyoudongliangshouhengdenormalguochengzhudao。

liwuyanjiuyuan2008nianyilaiyizhicongshishengzishuyundeyanjiugongzuo,yuhezuozhekaifadekaiyuanruanjianshengbte(shengbte)(yinyong1000yuci;)shiwurenhenihecanshudediyixingyuanlijisuanjinggeredaolvdefangfachengweizhuliuyanjiugongju,weiquanshijieshubaigeyanjiuzuguangfanshiyong,jidadituidongleweinachiduchuanreherediancailiaodengxiangguanlingyudefazhan。

bengongzuolunwenlianjie:

kundu, yang, ma, feng, carrete, ruan, madsen, and li, phys. rev. lett. 126, 115901 (2021)

qianqigongzuolunwenlianjie:

[1] chen, ma and li, phys. rev. b 99, 020305(rapid communications) (2019)

[2] chen, ma, wen and li, npj computational materials 5, 98 (2019)

加拿大pc[3] kundu, ma, carrete, madsen and li, mater. today phys. 13, 100214 (2020)

[4] yang, jena, meng, wen, ma, x. li and w. li, mater. today phys. xx, 100315 (2021)

(gaodengyanjiuyuan  gonggao)

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