2 4 6 8 tetramethyl 2 4 6 8 tetravinylcyclotetrasiloxane

ZrO₂ nanocomposites were prepared from a solution with 30 wt% 10 nm ZrO₂ NPs dispersed in MIBK, which were purchased from Ditto Technology (DT-ZROSOL-30MIBK (N10)). Dipentaerythritol penta-/hexa-acrylate and 1-hydroxycyclohexyl phenyl ketone were purchased from Sigma‒Aldrich and used as a monomer and a photoinitiator, respectively. MIBK, MEK, and acetone were purchased from Duksan General Science. h-PDMS, a vinylmethyl copolymer (VDT-731), a platinum catalyst (SIP6831.2), and a siloxane-based silane reducing agent (HMS-301) were purchased from Gelest. 2,4,6,8-Tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane and toluene, which were used as a modulator and a solvent, were purchased from Sigma‒Aldrich and Samchun Chemicals, respectively. PDMS, a silicone elastomer base, and a silicone elastomer curing agent were purchased from Dow Corning (SYLGARD™ 184 Silicone Elastomer Kit). The trichloro(1H,1H,2H,2H-perfluorooctyl)silane used for hydrophobic coating was purchased from Sigma‒Aldrich. toluene and n-hexane were purchased from Samchun Chemicals.

Acrylate liquid crystal (LC) monomer, RM82 was purchased from Wilshire Technologies, Inc. Thiol chain extender, EDDT and vinyl siloxane crosslinker, 2,4,6,8-Tetramethyl-2,4,6,8-tetravinyl cyclotetrasiloxane (TMTVCTS), were purchased from Sigma-Aldrich. Tetramethulammonium siloxanolate, TMA-Si was purchased from Gelest and used as Michael addition base-catalyst and as anionic initiator to the siloxane bond exchange. Triethylamine (TEA) was purchased from Sigma-Aldrich and used as base-catalyst. The photoinitiator, Irgacure I-651, purchased from Sigma-Aldrich. Toluene and Tetrahydrofuran, THF were purchased from Sigma-Aldrich and used as solvent.