kron function application but in 3d

Is there a function that would replicate the elements of a matrix in 3d? If I had the matrix A(:,:,1)= [1 2; 3 4] and A(:,:,2)=[5 6; 7 8] I would want the output B(:,:,1)= B(:,:,2)= [1 1 2 2; 3 3 4 4] and B(:,:,3)=B(:,:,4)=[5 5 6 6; 7 7 8 8].

Thanks.

Answer 1

[Walter Roberson]

For duplicating elements with the duplicates of each element beside each other, see repelem()

Answer 2

[Bruno Luong]

A(:,:,1)= [1 2; 3 4]; 
A(:,:,2)=[5 6; 7 8]

B = repelem(A,1,2,2)