Enhancement of Sensitivity of the Solution-Phase Localized Surface Plasmon by a Nanostructured Substrate
- PDF / 313,923 Bytes
- 6 Pages / 432 x 648 pts Page_size
- 53 Downloads / 249 Views
(QKDQFHPHQWRI6HQVLWLYLW\RIWKH6ROXWLRQ3KDVH/RFDOL]HG6XUIDFH3ODVPRQ E\D1DQRVWUXFWXUHG6XEVWUDWH 6KHQJMLH=KDLDDQG+XL=KDRD D
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a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
Data Loading...
