Table 1.

STEP Nanonet Force Microscopy Model Parameters

Variable	Significance	Value
L	segmental length of the fiber (distance between adjacent fixed ends)	variable; 100–500 (μm)
a	location of point load nearest to fiber-fiber intersection	0 < a < L (μm)
b	location of other point load	0 < a < b < L (μm)
${\delta }_a$	fiber deflection at $a$	variable (μm)
${\delta }_b$	fiber deflection at $b$	variable (μm)
λ	shape-dependent mechanics parameter	$\sqrt{S/EI}$ (m−1)
S	uniform pretensional load	S = π(d2/4)∗T (μN)
T	uniform pretensional stress, calculated from AFM residual stress measurements	4.1 MPa (70)
d	fiber diameter	250, 400, and 800 nm
E	elastic modulus of the polymer (polystyrene)	E = 0.97 (GPa) (70)
I	area moment of inertia	$I=\frac{\pi d^4}{64}$ (m4)