天津福彩|首页

鍙戝竷鏃堕棿锛2019-11-26

鏈綉璁紙鐗╄川绉戝涓庝俊鎭妧鏈爺绌堕櫌 鏉庡垰 宀抽槼锛  杩戞棩锛屽ぉ娲ョ褰╃數闀滀腑蹇冭憶鐐宠緣鏁欐巿涓庝腑绉戦櫌鐗╃悊鎵鐧介洩鍐爺绌跺憳绛変汉鍚堜綔锛鍦ㄦ渶鏂颁竴鏈熺數瀛愭樉寰鏉傚織銆Ultramicroscopy銆嬩笂鍙戣〃浜嗛涓衡Insight into long-period pattern by depth sectioning using aberration-corrected scanning transmission electron microscope鈥濈殑璁烘枃锛屽埄鐢ㄧ悆宸牎姝f壂鎻忛忓皠鐢甸暅锛STEM锛夌殑鏂眰鎵弿鎶鏈紙depth section锛屽鍥1a鎵绀猴級鐮旂┒浜嗙數闀滄垚鍍忎腑鐨勯暱鍛ㄦ湡缁撴瀯锛岄娆″疄鐜颁簡瀵圭數闀滀腑褰㈡垚鎽╁皵鏉$汗鐨勪笂涓嬪眰鏍峰搧鐨勫師瀛愮骇鍒垚鍍忥紙鍥1b-d锛夛紝涓哄垽鏂暱鍛ㄦ湡缁撴瀯鐨勬湰璐ㄦ彁渚涗簡鏂扮殑鎵嬫銆

鐢甸暅涓瀵熷埌闀垮懆鏈熺粨鏋勯氬父鏈変袱绉嶆儏鍐碉紝涓绉嶆槸璋冨埗缁撴瀯锛屼竴绉嶆槸鐢变簬涓ょ墖鏉愭枡涓婁笅鍙犲姞褰㈡垚鐨勬懇灏旀潯绾(濡傚浘1c鎵绀)銆傝皟鍒剁粨鏋勬湰韬槸鏅朵綋缁撴瀯锛屽叿鏈夊钩绉诲绉版у拰鍧囦竴鎬э紱鑰屾懇灏旀潯绾瑰垯鏄敱涓ょ墖鍛ㄦ湡鎬х粨鏋勭殑鏉愭枡鍙犲姞鍦ㄤ竴璧峰舰鎴愮殑銆傛墍浠ュ鏋滃湪鍨傜洿鏂瑰悜涓婂叿鏈変竴瀹氬垎杈ㄧ巼锛屽垯鍒╃敤璇ユ妧鏈彲浠ュ尯鍒嗗嚭涓婁笅涓ょ墖缁撴瀯銆傚熷姪鐞冨樊鐭鐢甸暅鍨傜洿鏂瑰悜鍒嗚鲸鐜囬珮锛堢害10nm锛夌殑鐗圭偣锛岄娆″悓鏃跺埄鐢ㄩ珮瑙掔幆褰㈡殫鍦(HAADF)鎴愬儚鎶鏈疄鐜颁簡瀵逛笂涓嬪眰鏉愭枡鐨勫師瀛愮骇鍒垚鍍忥紝浠庤屾彁鍑轰簡鍖哄埆涓ょ闀垮懆鏈熺粨鏋勶紙璋冨埗缁撴瀯鍜屾懇灏旀潯绾癸級鐨勬柟娉曘

闅忕潃鐢甸暅鎶鏈殑鍙戝睍锛岀數闀滃瀭鐩存柟鍚戠殑鍒嗚鲸鑳藉姏灏嗚秺鏉ヨ秺楂橈紝鏈夋湜鑾峰緱鍘熷瓙鍒嗚鲸鐜囷紝鐩镐俊鍒╃敤鎵弿鏂眰鎶鏈繘琛屾潗鏂欑殑3d閲嶆瀯灏嗘垚涓轰竴涓噸瑕佺殑鐮旂┒鏂瑰悜鍜屾墜娈点



1(a锛夐氳繃鏀瑰彉STEM鎴愬儚鐨focus瀹炵幇鏂眰鎵弿锛(b-d) 鏍峰搧鐨勪笂銆佷腑銆佷笅涓変釜閮ㄥ垎瀵瑰簲鐨HAADF鍍忋傚浘c鏄懇灏旀潯绾癸紝涔熷彲浠ラ氳繃鍥bd鏁板涓婄畝鍗曞彔鍔犲疄鐜般


2 (a)鏍峰搧鎶曞奖缁撴瀯绀烘剰鍥撅紝 (b) 鐩稿杞16.5掳鐨勪袱鐗囨牱鍝佸彔鍔犲悗鐨勬姇褰辩粨鏋勭ず鎰忓浘

(c)b瀵瑰簲缁撴瀯鐨勫瀭鐩存埅闈㈢ず鎰忓浘



杩斿洖鍘熷浘
/

澶╂触绂忓僵澶╂触绂忓僵
澶╂触绂忓僵

Copyright © 2002-2019澶╂触绂忓僵鐗堟潈鎵鏈