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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.2c00663
|2 doi
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|a pubmed24n1135.xml
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|a (DE-627)NLM340775165
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|a (NLM)35549353
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Luo, Xiaojun
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Shape- and Size-Dependent Refractive Index Sensing and SERS Performance of Gold Nanoplates
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 25.05.2022
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|a Date Revised 03.08.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Plasmonic sensors are promising for ultrasensitive chemical and biological analysis. Gold nanoplates (Au NPLs) show unique geometrical structures with high ratios of surface to bulk atoms, which display fascinating plasmonic properties but require optimization. This study presented a systematic investigation of the influence of different parameters (shape, aspect ratio, and resonance mode) on localized surface plasmon resonance properties, refractive index (RI, n) sensitivities, and surface-enhanced Raman scattering (SERS) enhancement ability of different types of Au NPLs through finite-difference time-domain (FDTD) simulations. As a proof of concept, triangular, circular, and hexagonal Au NPLs with varying aspect ratios were fabricated via a three-step seed-mediated growth method by the experiment. Both FDTD-simulated and measured experimental results confirm that the RI sensitivities increase with the aspect ratio. Furthermore, choosing a lower order resonance mode of Au NPLs benefits higher RI sensitivities. The SERS enhancement abilities of Au NPLs also predicted to be highly dependent on the shape and aspect ratio. The triangular Au NPLs showed the highest SERS enhancement ability, while it drastically decreased for circular Au NPLs after the rounding process. The SERS enhancement ability gradually became more intense as the hexagonal Au NPLs overgrown on circular Au NPLs with increasing volumes of HAuCl4 solution. The results are expected to help develop effective biosensors
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Gold
|2 NLM
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|a 7440-57-5
|2 NLM
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| 700 |
1 |
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|a Qiao, Ling
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xia, Zhichao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yu, Jiaming
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Xiaozhou
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Huang, Juhong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Shu, Chang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, Caijun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a He, Yi
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 38(2022), 20 vom: 24. Mai, Seite 6454-6463
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:38
|g year:2022
|g number:20
|g day:24
|g month:05
|g pages:6454-6463
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|u http://dx.doi.org/10.1021/acs.langmuir.2c00663
|3 Volltext
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