Glutaraldehyde-Cross-Linked Polyethylenimine Functionalized Tapered Fiber Interferometer for Ultrasensitive (Sub-nM) Detection of Copper Ions
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This work presents a Mach-Zehnder interferometer (MZI) fiber-optic sensor functionalized with a glutaraldehyde (GA) cross-linked polyethylenimine (PEI) film for the ultrasensitive detection of copper ions (Cu2+) in aqueous environments. The sensing structure, ... ...
