Dark-Field Scattering and Local SERS Mapping from Plasmonic Aluminum Bowtie Antenna Array

被引：8

作者：

Thang Duy Dao ^{[1
,2
]}

Chung Vu Hoang ^{[3
,4
]}

Nishio, Natsuki ^{[5
]}

Yamamoto, Naoki ^{[5
]}

Ohi, Akihiko ^{[1
]}

Nabatame, Toshihide ^{[1
]}

Aono, Masakazu ^{[1
]}

Nagao, Tadaaki ^{[1
,6
]}

机构：

[1] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton MANA, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

[2] Nara Inst Sci & Technol, Grad Sch Mat Sci, 8916-5 Takayama, Ikoma, Nara 6300192, Japan

[3] Vietnam Acad Sci & Technol, Inst Mat Sci, 18 Hoang Quoc Viet St, Hanoi 100000, Vietnam

[4] Duy Tan Univ, Inst Theoret & Appl Res, 1 Phung Chi Kien St, Hanoi 100000, Vietnam

[5] Tokyo Inst Technol, Phys Dept, Meguro Ku, Tokyo 1528551, Japan

[6] Hokkaido Univ, Grad Sch Sci, Dept Condensed Matter Phys, Kita Ku, Kita 10 Nishi 8, Sapporo, Hokkaido 0600810, Japan

来源：

MICROMACHINES | 2019年 / 10卷 / 07期

基金：

日本科学技术振兴机构; 日本学术振兴会;

关键词：

aluminum; plasmonics; dark-field scattering; SERS; bow-tie antenna; INFRARED-ABSORPTION SPECTROSCOPY; ENHANCED RAMAN-SCATTERING; OPTICAL-PROPERTIES; PERFECT ABSORBERS; AU NANOPARTICLES; SURFACE-PLASMON; SILVER; NANOSPHERES; FILMS; GOLD;

D O I：

10.3390/mi10070468

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

On the search for the practical plasmonic materials beyond noble metals, aluminum has been emerging as a favorable candidate as it is abundant and offers the possibility of tailoring the plasmonic resonance spanning from ultra-violet to the infrared range. In this letter, in combination with the numerical electromagnetic simulations, we experimentally study the dark-field scattering spectral mapping of plasmonic resonance from the free-standing Al bowtie antenna arrays and correlate their strong nearfield enhancement with the sensing capability by means of surface-enhanced Raman spectroscopy. The spatial matching of plasmonic and Raman mapping puts another step to realize a very promising application of free-standing Al bowtie antennas for plasmonic sensing.

引用

页数：10

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