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¡¡¡¡»¯Ñ§¼ÒPaul Alivisato ¹²Í¬¸ºÔðBerkeley ʵÑéÊÒ²ÄÁÏ¿ÆÑ§²¿ºÍÔÚBerkeleyµÄ¼ÓÀû¸£ÄáÑÇ´óѧ»¯Ñ§Ïµ¡£ËùÒÔ˵£¬AlivisatoÔÚÄÉÃ×°ëµ¼Ìå¾§Ìåʼ´´ÁìÓòÖУ¬ÊÇһλÉÁ˸¹ââµÄ¿ÆÑ§¼ÒÖ®Ò»¡£




¡¡¡¡Chemist Paul Alivisatos is a leader in the development of nano-sized crystals that could serve as building blocks for electronic devices a few billionths of a meter in size.

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¡¡¡¡¡°Í¨¹ý¾«È·¿ØÖÆÄÉÃ×¾§Ìå³ß´çºÍ±íÃæ£¬ÄܸıäËüÃǵÄÐÔÖÊ£¬¡±Alivistos˵£¬¡°ÄãÄ܏ı䯵´øÏ¶¡¢ÄãÄܸıäÈçºÎ´«µ¼µçºÉ¡¢ÄãÄܸıäËü¹éÊôʲôÑù¾§Ìå½á¹¹¡¢ÄãÉõÖÁÄܸıäËüµÄÈÛµãζȡ±¡£

¡¡¡¡Éú³¤ÎÞÁѺÛÄÉÃ×¾§ÌåÊÇÏà¶ÔÈÝÒ×Щ£¬ÒòΪËüÃǵij¤¶ÈÊÇÈç´ËСÒÔÖÂÓÚÔڳɳ¤¼Ó¹¤³ÉËùÐè֮ȱÏÝʱ¼òµ¥µ½²»ÐèÒª×ã¹»µÄʱ¼ä¡£È»¶ø£¬¶ÔͬÑùС³¤¶ÈµÄÄÉÃ×¾§Ì壬ҪÉè·¨¿ØÖÆËüµÄÌå»ýºÍ±íÃæ£¬ÄÇÊǾªÈ˵ÄÌôÕ½¡£ÔÚ¹ýÈ¥µÄÊ®ÄêÖУ¬AlivisatosºÍËûµÄÑо¿Ð¡×é£¬ÔøÖÆÔì³ö°ëµ¼Ìå·ÛÄ©µÄÄÉÃ×¾§Ì壬²¢ÒÔÂú×ãÌôÕ½µÄÊÖ¶Î̽Ë÷¸Ä±äÉú³¤Ìõ¼þµÄ¸÷ÖÖ·½·¨¡£

¡¡¡¡Alivisatos µÚÒ»¸ö´óµÄÍ»ÆÆÖ®Ò»£¬ÊÇËûºÍËûµÄºÏ×÷ÕßShimon Weiss ̽Ë÷³É¹¦ÁËΪ·¢Éä¶àÖÖÉ«¹â£¬¶øÒÀÀµÓÚïÓ¡¢ÎøÎªºË£¬ÑÇÁòËáïÓΪ¿ÇµÄ²»Í¬Ìå»ýµÄÇòÐÎÄÉÃ×¾§Ì壬ÕâÒ»Í»ÆÆ´ò¿ªÁËÐí¶àDZÔÚÓ¦ÓõĴóÃÅ£¬°üÀ¨°ÑÕâЩÇòÐκˡª¿ÇÄÉÃ×¾§Ìå×÷Ϊ¸ßЧӫ¹â±êÇ©¡¢±ê¼ÇÓÃÓÚ¸½×ÅÌØÖÖµ°°×µÄ¿¹ÌåÉÏ£¬µ±Êܵ½¹â×Ó¼¤·¢£¬¾Í·¢³öÓ«¹â»ò¼¤·¢³öÉ«¹â£¬ÕâÐèÔÚ¹²½¹µãµÄÏÔ΢¾µÏ¹۲졣




¡¡¡¡The images above show the variety of shapes and sizes that nanocrystals can be made to assume. The rod-shaped nanocrystals to the far left can be stacked for possible use in LEDs, while the tetrapod to the far right should be handy for wiring nano-sized devices.

¡¡¡¡¡°ÓÐʱºî£¬ÎªÁËÈ«Ãæ¿Ì»®ÉúÎïÑùÆ·µÄÌØÕ÷£¬ÐèÓÃһȺϸ°û×÷ΪÑùÆ·£¬ÕâʱÄãÐèÒª¿´µ½±êʶµÄ½áºÏ¡£¡±Alivisatos˵¡£ÕâÖÖ²âÊÔÐèÒª¸´ºÏµÄÉ«¹â·¢É䣬ÕâÊDzÉÓó£¹æÈ¾ÁÏ·Ö×ÓÄÑÒÔ»ñµÃµÄ·¢Éä¡£




¡¡¡¡Cadmium selenide nanocrystals were used to create this fluorescent microscopic image of living 3T3 fibroblast cells. These and other semiconductor nanocrystals could supplement dye-molecules as fluorescent labels for the study of biological materials.

¡¡¡¡AlivisatosºÍËûµÄͬʲÉÓðѰ뵼Ìå·ÛĩעÉä½øÈȵġ¢Ïó·ÊÔí±¡Ä¤ËÆµÄ±íÃæ»îÐÔ¼ÁÖеķ½·¨£¬À´ÖÆÔìÄÉÃ×¾§Ìå¡£ÔÚËûÃÇ×î½üµÄ¹¤×÷ÖУ¬ËûÃÇÔøÔÚTOPOºÍHPAÁ½ÖÖ»ìºÏ±íÃæ»îÐÔ¼ÁÖÐÖÆ±¸¾§Ì壬ÿһÖÖ±íÃæ»îÐÔ¼ÁÒÔ»ºÂý¶ø²»Í¬µÄ·½·¨ºÍ°ëµ¼Ìå·ÛÄ©·´Ó¦¡£½á¹ûʹÄÉÃ×Éú²ú³öÏÖÕæÕýȫеijߴ硣

¡¡¡¡ÉÏÒ»ÄêÈýÔ£¬AlivisatosºÍËûµÄС×é·¢²¼ÁËÒ»ÌõËûÃÇÒѾ­ÖÆÔì³öÁ½ÖֳߴçµÄ¡¢ÐÎ×´Ïó°ô×´µÄïÓÎøÄÉÃ×¾§Ìå¡£¶øÔÚÕâÒÔǰ£¬ËûÃÇһֱȫ²¿±¨µÀÏóÔ²µãÇòÐÎËÆµÄÄÉÃ×¾§Ìå¡£ÂÛÊöÖÆÔì°ôÐΰ뵼ÌåÄÉÃ×¾§ÌåµÄÄÜÁ¦£¬²»½öΪŤתеÄDZÔÚÓ¦ÓÃÆÌÆ½µÀ·£¬¶øÇÒ»¹²ûÃ÷ÁË¿ØÖƾ§Ìå³É³¤ÊÇ¿ØÖÆÐÎ×´ºÍ´óСµÄ¹Ø¼ü¡£

¡¡¡¡¡°¾ÍÊÇÕâµÚÒ»´Î£¬ÈκÎÈËÒѾ­ÕæÕý»ñµÃ¿ØÖư뵼ÌåÄÉÃ×¾§Ìå³É³¤µÄÊֶΣ¬¡±Alivisatos˵£¬¡°Í¨¹ý¿ØÖƾ§Ìå³É³¤µÄ¶¯Á¦Ñ§£¬ÎÒÃDz»½öÄÜÑ¡Ôñ¾§ÌåµÄ´óС£¬¶øÇÒ»¹¿Éʹ¾§ÌåÐÎ×´²»Í¬¡£¡±



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¡¡¡¡DNA is being used as a template for assembling nanocrystals into macromolecules. Here nanocrystals of gold attached to a single strand of DNA are brought together into a desired alignment as the DNA's double-helix is formed. (Illustration by Meg Holm)

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