Improved stability of aluminum surface plasmon resonance sensor by protective gold layer

被引：2
作者：
Tanabe, Ichiro [1 ]
Tanaka, Kenya [1 ]
Hikida, Taisei [1 ]
Fujita, Takayoshi [1 ]
Ueno, Nami [1 ]
机构：
[1] Rikkyo Univ, Coll Sci, Dept Chem, 3-34-1 Nishi Ikebukuro, Toshima, Tokyo 1718501, Japan
来源：
SENSORS AND ACTUATORS A-PHYSICAL | 2024年 / 375卷
关键词：
Aluminum; Surface plasmon resonance sensor; Flow system; Stability; RAMAN-SCATTERING; UV; FILMS; BIOSENSORS; OXIDATION;
D O I：
10.1016/j.sna.2024.115528
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The surface plasmon resonance (SPR) sensing in the ultraviolet (UV) region, achieved through the optimization of aluminum (Al) film conditions, has attracted attention due to its heightened energy levels and more plentiful molecular electronic transitions compared to the visible region. In this research, the stability of the UV-SPR sensor is improved by applying a protective thin layer of gold (Au) onto the Al film. This reduces spectral alterations observed when the Al film was uncoated in water pre and post flow system measurements. This exploration presents the initial experimental confirmation of the reliability of Al -Au bilayer coatings as SPR sensors in the UV region, highlighting advancements in UV-SPR sensor technology.
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页数：6
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