Biomaterials for MEMS

16 J. Bai et al.

2.3.2 TEM

Magnetic spider silk film was investigated using TEM, where the size and contour

of the spheres could be much more defined. The spherical particles varied in

diameter, approximately between 150 to 650 nm. A select few were as large

as 1.4 μm. The particles were not dispersed in any orderly fashion. They did

however appear to connect and form chains or clusters (see Figs. 2.4(a) and 2.4(b)).

Note that, particularly in Fig. 2.4(b), the spheres appear to blend in with each

other forming fibrous structures, with the more transparent materials between the

spheres appearing to join them together. It is possible, then, that the sphe ...