Functionalization of 3D Polylactic Acid Sponge Using Atmospheric Pressure Cold Plasma

Table 2

Emissive species generated into plasma region evaluated by optical emission spectroscopy.

Species	Wavelength (nm)	Transition
NO system	248.34	A 2Σ + ➔ Χ 2Π
OH angstrom system	306.45	A 2Σ + ➔ Χ 2Π
N2 second positive system	315.79; 336.76; 357.69; 379.96	C 3Πu ➔ B 3Πg
CO angstrom series	483.13; 519.67; 561.03	B 1Σ ➔ A 1Π
CO + comet-tail system	427.56	A 2Π ➔ Χ 2Σ
C2 swan system	489.08; 516.03	d 3Πg ➔ a 3Πu
CH	431.24	A 2Δ ➔ Χ 2Π
H Balmer series	434.47; 485.88; 656.09	➔ 2;  ➔ 2;  ➔ 2
H2	671.74	d3Π − u ➔ _a3Σ + g
He	501; 586; 667; 706	2s^1S0-3p^1P1^0; 2P^3p^01,2–3d^3D1,2,3; 2P^1p^01–3d^1D2; 2p^3P^01,2-3s^3S1
O	394.2; 436.77; 615.69; 776.72; 843.8	35P-35S; 33P-33S
O^2+ system	523.77; 631.43	b4Σ-g ➔ a4Πu