Table 1.

Negative-tone PSPIs

Author	Matrix polymer		Crosslinker	Photo-sensitizer	Feature size (μm)
PSPI + crosslinker + PAG
Saito et al. 89.					6
Watanabe et al. 86.					15
Watanabe et al. 90.					10
PSPI + PBG
Mochizuki et al. 91.			–		10
Fukukawa et al. 101.			–		8
Tseng et al. 88.			–		8
Photogenerator-free PSPI
Chung et al. 103.			–	–	10
Li et al. 102.			–	–	5