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yexuqing木虫之王 (文学泰斗)
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【综合其他】奈米光學檢測–高解析度近場光學顯微鏡的應用
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?????W?z?y?C????????????W?@??R????? 2010/7/16 [ [url= ocPrint(8713)]?? ?? ?? ?[/url] | ?? ?] ?? ?? ]1986??????????W?@??R(Scanning Near-field Optical Microscopy; SNOM)??l?????????????????W???g??????W?@??O????l?????????20?N???v????ё??????Y?σ??桢????????????r????????g????^????????y????^?????????y?????w??????B???y????????w?c??????{???о??????????????O?С?????????????x??????????????5~50 nm?????????y?????????С???????L????^?????????????u???(Evanescent Wave)????????????W???????????g??????s??????С??????????????????????V?x?????????????W????????????l??????Y???????о?????????W?????????????????g???????????c????????????W??????r???????????С????????С?r??????????????p??????y???o????y????????????????????o?????sС???@???????SNOM???g????g????????????????s??50~100 nm??????K?????M???????W???о??? ????????B?????????????W???g?????????????????l?a???I????????M?н??????裬?@?I????????????Ч??(Lightning-rod Effect)????{?????(Plasmon Resonance; PR)???a???????????Ч???????????????c?????????????Q???????????????W?@??R(Scattering-type Scanning Near-field Optical Microscope; s-SNOM)?????????SPM??????????e???y?????SNOM??????????Q??o?????????????W?@??R(Apertureless SNOM)?????W?????????????С?????s??10~20 nm?????????????????????С?10 nm??????m???????????????W???|??о??? ?x?????????? s-SNOM?????????AFM???????c?????????g??????????????a???????????Д??????????W???|?????????????С?s??20 nm???c???????x?t?s3~5 nm?????hС???????L???????c????????????????o??????????????ú????M?o???O?????(Quasi-electrostatic Dipole Model)?????s-SNOM?????????????W?????C??????????????????????????С????????m?????B???????????@С????r???????l????С??a?????????????????????O??(Dipole)???????С??????????r????????????T?l?a???R????O??(Image Dipole)???@?????O??a??????????r???????????????ň?????h??????????????????????c?????????????(Dielectric Constant)???P???????????y?r???????????????????????@???????y?Y?????????????????^????????????????W????? ??·?????D?????????????????·????^???????R(BS)????????????????????????????l??????????????????R(MO)??????60???????????AFM??????????????????????R????????????·???????????????????????????t??????????l?D???? (Acousto-optical Frequency Shifter; FS)?????l???L?D??????L+ ???????l?????c??????????????????R????????????y??(PD)?????M???????????y??  ?D?????????????????W?@??R?????D ?x???????c???? 1. ???g??W???????c?????????? ???SNOM ??W?????????c??????С???P?? s-SNOM??W???????c????????????????P???D????????s-SNOM ????????????ò?D?????????D????????????С?10 nm????????20 nm???K???????????????????????н???????u??Y???????蹠????1,000??500 nm2?????y????????????????????????????s??16 nm???D??(a)~(d)????С?10 nm?????????????溬???????y?w???????????????e??????ò?D?????????D???????λ?D???D??(b)????????M????D?????蹠???? 500??250 nm2????D??(d)????????W????????9 nm??  ?D?????s-SNOM ?????????y?w???????(a)??ò?D??(b)???????D??(c)?????λ?D??(d)??D(b)????????M????D 2. ??{???W???y ??????w(Photonic Crystal)???g???_?l???????W???????????????????????^????????????M??20 nm??????????W?????δ???_???????????????W??l?F????????????ü??l?d?????w?\??a??????{?????F?????????Y?????a???I????ň??????????????????О飬???_??{?????W(Plasmonics)???I?????W?????????????????b?????????? ????s-SNOM?y?????????????????????p???B????????????б??????????????????Y????a?????????????c??????a?????沨?y??????????О????????????????????????О??????????t?????????????ň??О顣?????????????????????M???C???Y?????T?l???ň??О顣Ebbesen??F?l?F?????A???????Y??????????L???о?????????????????О顣??Y???`???????@????????????J???????^??????????r???l????{???????{??(Surface Plasmon Wave; SPW)???????A?Y???c??????{???L?????r???a?????O?????棬???A???????????^?????{??????^??????????????l???????????_???β??L?Y???????????@?????????????????????h????Y??????y????c????????????^?y?Y??????????????????s-SNOM????^?y??????м??l??SPW???C????Y??????????????О??c????Π????l?????B?????е??P?S?? 4. ?????????????Мy????z?y ???????????????(Surface Enhanced Raman Scattering; SERS)???g????????T??????z?y???g????????????????????????????????V??????c??????????С???o??????????z?y????g??SERS????????????l????????{?????Y??????????y????????????????????????????l??{?????Y??????a?????????????I????ň?????????????????????????104~1012???????ɑ?????????Мy?????SERS??????y?????R??????????o?????????????????z?y??????z?y???????????????????σ???????c?????????????????? ???????????/?????????? ????????????I?????s?I283??????????Y??????http://www.materialsnet.com.tw/DocView.aspx?id=8685 |
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