TY - JOUR
T1 - Ultrabroadband Metasurface for Efficient Light Trapping and Localization
T2 - A Universal Surface-Enhanced Raman Spectroscopy Substrate for "All" Excitation Wavelengths
AU - Zhang, Nan
AU - Liu, Kai
AU - Liu, Zhejun
AU - Song, Haomin
AU - Zeng, Xie
AU - Ji, Dengxin
AU - Cheney, Alec
AU - Jiang, Suhua
AU - Gan, Qiaoqiang
N1 - Publisher Copyright:
© 2015 Wiley-VCH Verlag GmbH & Co. KGaA.
PY - 2015/7/1
Y1 - 2015/7/1
N2 - Most reported surface-enhanced Raman spectroscopy (SERS) substrates can work for individual excitation wavelengths only. Therefore, different substrates have to be used for different excitation wavelengths, which consumes more biological/chemical materials, substrates, and measurement time. Here, an ultrabroadband super absorbing metasurface that can work as a universal substrate for low cost and high performance SERS sensing is reported. Due to broadband light trapping and localized field enhancement, this structure can work for almost "all" available laser lines from 450 to 1100 nm. This predicted feature is validated by SERS experiment using five different excitation laser lines, obtaining a high enhancement factor of 5.3 × 107 and very good uniformity over large areas.
AB - Most reported surface-enhanced Raman spectroscopy (SERS) substrates can work for individual excitation wavelengths only. Therefore, different substrates have to be used for different excitation wavelengths, which consumes more biological/chemical materials, substrates, and measurement time. Here, an ultrabroadband super absorbing metasurface that can work as a universal substrate for low cost and high performance SERS sensing is reported. Due to broadband light trapping and localized field enhancement, this structure can work for almost "all" available laser lines from 450 to 1100 nm. This predicted feature is validated by SERS experiment using five different excitation laser lines, obtaining a high enhancement factor of 5.3 × 107 and very good uniformity over large areas.
KW - light trapping
KW - localization
KW - surface-enhanced Raman spectroscopy
KW - ultrabroadband metasurfaces
UR - http://www.scopus.com/inward/record.url?scp=84938702894&partnerID=8YFLogxK
U2 - 10.1002/admi.201500142
DO - 10.1002/admi.201500142
M3 - Article
AN - SCOPUS:84938702894
SN - 2196-7350
VL - 2
JO - Advanced Materials Interfaces
JF - Advanced Materials Interfaces
IS - 10
M1 - 1500142
ER -