| ²é¿´: 868 | »Ø¸´: 4 | |||
weijiaoľ³æ (ÕýʽдÊÖ)
|
[½»Á÷]
NMÉÏmetallic glass ×îÐÂÎÄÕ ÒÑÓÐ2È˲ÎÓë
|
|
Local elastic properties of a metallic glass Hannes Wagner,1 Dennis Bedorf,1 Stefan K¨¹chemann,1 Moritz Schwabe,1 Bo Zhang,1 Walter Arnold1, 2 & Konrad Samwer1 Nature Materials Year published: (2011) DOI: doi:10.1038/nmat3024 The nature of non-crystalline materials causes the local potential energy of a cluster of atoms or molecules to vary significantly in space. Different configurations of an ensemble of atoms in a metallic glass lead therefore to a distribution of elastic constants which also changes in space. This is totally different to their crystalline counterparts, where a long-range order exists in space and therefore a much more unified elastic modulus is expected. Using atomic force acoustic microscopy, we present data which show that the local so-called indentation modulus M indeed exhibits a wide distribution on a scale below 10 nm in amorphous PdCuSi, with ¦¤M/M¡Ö30%. About 104 atoms are probed in an individual measurement. Crystallized PdCuSi shows a variation that is 10¨C30 times smaller and which is determined by the resolution of the microscope and by the polycrystalline structure of the material. Á´½Ó£ºhttp://www.nature.com/nmat/journ ... /full/nmat3024.html |
» ²ÂÄãϲ»¶
Ò»Ö¾Ô¸ÎäÀí²ÄÁÏ305·ÖÇóµ÷¼Á
ÒѾÓÐ5È˻ظ´
²ÄÁÏר˶ӢһÊý¶þ306
ÒѾÓÐ3È˻ظ´
085600²ÄÁÏÓ뻯¹¤µ÷¼Á 324·Ö
ÒѾÓÐ7È˻ظ´
311Çóµ÷¼Á
ÒѾÓÐ3È˻ظ´
26µ÷¼Á/²ÄÁÏ/Ó¢Ò»Êý¶þ/×Ü·Ö289/ÒѹýAÇøÏß
ÒѾÓÐ7È˻ظ´
295Çóµ÷¼Á
ÒѾÓÐ5È˻ظ´
354Çóµ÷¼Á
ÒѾÓÐ5È˻ظ´
²ÄÁÏרҵÇóµ÷¼Á
ÒѾÓÐ3È˻ظ´
Çó²ÄÁϵ÷¼Á
ÒѾÓÐ7È˻ظ´
Ò»Ö¾Ô¸Ìì´ó²ÄÁÏÓ뻯¹¤£¨085600£©×Ü·Ö338
ÒѾÓÐ3È˻ظ´
» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:
·ÖÏíJACS ÉÏÏÂÔØµÄ6ƪ¹ØÓÚÌ«ÑôÄܲÄÁϵÄÎÄÕÂ
ÒѾÓÐ80È˻ظ´
°ï濴һϼªÁÖ´óѧÂíçüÃúÀÏʦÕâÆª¹ØÓÚÈÈµç¼ÆËãµÄÎÄÕ£¬ÆÚ´ýºÍ¸Ðл
ÒѾÓÐ11È˻ظ´
ËÄÇâ߻ૣ¨THF Tetrahydrofuran £©µÄ½ØÖ¹²¨³¤ÕæµÄÊÇ220nm×óÓÒÂð?
ÒѾÓÐ14È˻ظ´
ÇëÎʼ״¼ºÍDMSOÔÚ270nmµÄ×ÏÍâÏÂÓÐÎüÊÕÂð?
ÒѾÓÐ8È˻ظ´
¡¾ÇóÖú¡¿Ïë»ñµÃÒ»¸ö200nm×óÓÒ£¨150nm---300nm£©µÄPDMS±¡Ä¤
ÒѾÓÐ11È˻ظ´
Ó«¹â¹âÆ×ÖгöÏÖÁËÒ»°ëÓÚ¼¤·¢²¨³¤µÄ·¢Éä·å£¬400nm¼¤·¢£¬200nmÓз¢É䣬µ«ÓÖ²»ÊÇÉÏת»»
ÒѾÓÐ22È˻ظ´
glass woolÊÇʲô¶«Î÷
ÒѾÓÐ5È˻ظ´
³ß´çСÓÚ10 nm£¬ÔÚË®ÖÐÍêÈ«·ÖÉ¢²»³ÁµíµÄ½ðºìʯ¶þÑõ»¯îÑÄÉÃ×¾§ÓкÎÓô¦Âð£¿
ÒѾÓÐ21È˻ظ´
Çëweijiao¡¢gulin98¡¢michaelzyºÍlhp_0799¸úÌûÁìÈ¡6Ô·ÝÌØÔ¼Í¨Ñ¶Ô±µÄVIP
ÒѾÓÐ8È˻ظ´
ÐÂÐ͹¦ÄܲÄÁϰæ×¨¼Ò¹ËÎÊdonkeypku½»Á÷ÊÒ- 5ÔÂ7ÈÕÔÚµÚÒ»ÌûÖиüжàÖÖ²ÄÁϹâѧ²ÎÊý
ÒѾÓÐ55È˻ظ´
¡¾Çë½Ì¡¿ÓÐûÓÐÎÄÏ×±¨µÀ300nm×óÓҵĽé¿×̼µÄ¿ÕÐÄÇò?
ÒѾÓÐ5È˻ظ´
лл·ÖÏí£¡£¡ |
2Â¥2011-05-23 17:11:22
imrsfb
Ìú¸Ëľ³æ (ÖøÃûдÊÖ)
- MM-EPI: 7
- Ó¦Öú: 12 (СѧÉú)
- ¹ó±ö: 1.17
- ½ð±Ò: 8101.6
- É¢½ð: 2541
- ºì»¨: 45
- ɳ·¢: 3
- Ìû×Ó: 2477
- ÔÚÏß: 580.6Сʱ
- ³æºÅ: 472279
- ×¢²á: 2007-12-04
- ÐÔ±ð: GG
- רҵ: ½ðÊô½á¹¹²ÄÁÏ
¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
|
atomic force acoustic microscopy ɶ¶«¶«°¡£¿ |
3Â¥2011-05-23 17:13:27
imrsfb
Ìú¸Ëľ³æ (ÖøÃûдÊÖ)
- MM-EPI: 7
- Ó¦Öú: 12 (СѧÉú)
- ¹ó±ö: 1.17
- ½ð±Ò: 8101.6
- É¢½ð: 2541
- ºì»¨: 45
- ɳ·¢: 3
- Ìû×Ó: 2477
- ÔÚÏß: 580.6Сʱ
- ³æºÅ: 472279
- ×¢²á: 2007-12-04
- ÐÔ±ð: GG
- רҵ: ½ðÊô½á¹¹²ÄÁÏ
4Â¥2011-05-23 17:18:10
gguoyun
½ð³æ (³õÈëÎÄ̳)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 900.1
- Ìû×Ó: 34
- ÔÚÏß: 58.7Сʱ
- ³æºÅ: 1216829
- ×¢²á: 2011-03-01
- ÐÔ±ð: GG
- רҵ: ½ðÊô»ù¸´ºÏ²ÄÁÏ

5Â¥2011-06-08 08:54:55













»Ø¸´´ËÂ¥
