Fig. 6

The calculated model of a GF/Au/Ni(OH)2 with glucose. b and c GF sensor with glucose, d and e GF/Au sensor with glucose, and f and g GF/Au/Ni(OH)2 with glucose, respectively. b, d, and f sensor models are in the vertical angle of view and c, e, g sensor models are in the horizontal angle of view. h The calculated adsorptions of glucose using the fiber sensors with a different structure