Table 3.

Results of the measurement of fiber diameters and calculation of uniformity coefficients.

Sample Rotating Needle Cylinder	${\mathit{A}}_{\mathit{n}} \mathbf{nm}$	95% Confidence	${\mathit{A}}_{\mathit{w}} \mathbf{nm}$	$\mathbf{K} \mathit{A}\mathit{w}/\mathit{A}\mathit{n}$	Sample Wire Electrode	${\mathit{A}}_{\mathit{n}} \mathbf{nm}$	95% Confidence	${\mathit{A}}_{\mathit{w}} \mathbf{nm}$	$\mathbf{K} \mathit{A}\mathit{w}/\mathit{A}\mathit{n}$
Pristine PU	182	5.4	194.5	1.07	Pristine PU	189	5.9	199	1.05
PU + 5%CuO µm	226	6.2	239	1.06	PU + 5%CuO µm	134	4.04	142	1.06
PU + 5%CuO nm	228	6.04	239	1.05	PU + 5%CuO nm	188	6.15	202	1.07
PU + 7%CuO µm	278	8.5	298	1.07	PU + 7%CuO µm	142	3.5	149	1.05
PU + 7%CuO nm	262	5.97	270	1.03	PU + 7%CuO nm	175	5.4	186	1.06
PU + 9.5%CuO µm	242	6.9	257	1.06	PU + 9.5%CuO µm	125	3.2	132	1.06
PU + 9.5%CuO nm	237	6.1	249	1.05	PU + 9.5%CuO nm	184	6.3	198	1.08
PU + 12%CuO µm	231	5.7	249	1.08	PU + 12%CuO µm	139	3.3	145	1.04
PU + 12%CuO nm	226	6.9	240	1.06	PU + 12%CuO nm	181	6.1	195	1.08