1 Subjects: “...solar cell, gas sensing, photonic crystal, finite difference method, multimode waveguide...”

2 Subjects: “...finite difference method scheme...”

3 Subjects: “...Difference Method...”

4 Subjects: “...finite difference method...”

5 Subjects: “...finite difference method...”

6 Subjects: “...finite difference method...”

7 Subjects: “...finite difference method...”

8 Subjects: “...finite difference method...”

9 Subjects: “...finite difference method...”

10 Subjects: “...mimetic finite difference method...”

11 Subjects: “...finite difference method...”

12 Subjects: “...finite difference method...”

13 Subjects: “...finite difference method...”

14 Subjects: “...finite difference method...”

15 Subjects: “...nonstandard finite-difference method...”

16 Subjects: “...finite difference method...”

17 Subjects: “...stress difference method (SDM)...”

18 Subjects: “...the principle of time-difference method...”

19 Subjects: “...theta finite difference method...”

20 Subjects: “...finite-difference methods...”