pH-responsive hydrogel coated fiber Bragg grating -based chemo mechanical sensor bioreactor applications

被引：0
|
作者：
Kishore, P. V. N. [1 ]
Shankar, M. Sai [1 ]
机构：
[1] Natl Inst Technol Warangal, Dept Phys, Warangal, Andhra Pradesh, India
来源：
BIOMEDICAL IMAGING AND SENSING CONFERENCE | 2017年 / 10251卷
关键词：
FBG sensor; Hydrogel; pH sensing; Bio reactor; Fiber sensors;
D O I：
10.1117/12.2270474
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
This paper describes a fiber optics based pH sensor by using wavelength modulated techniques. Fiber Bragg grating (FBG) is functionalized with a stimulus responsive hydrogel which induces a strain on FBG due to mechanical expansion of the gel in response to ambient pH changes. The gel is synthesized from the blends of Poly (vinyl alcohol)/Poly (acrylic acid). The induced strain results in a shift of FBG reflected peak which is monitored by an interrogator. The sensor system shows a good linearity in acidic pH range of 3 to 7 with a sensitivity of 12.16pm/pH. Besides that it shows good repeatability which proves it to be fit for pH sensing applications.
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页数：4
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