Fig. 2: Fabrication and performance optimization of TCGC-embedded adhesive stamps. | Light: Science & Applications

Fig. 2: Fabrication and performance optimization of TCGC-embedded adhesive stamps.

From: Gradient-graphene-enabled directional photothermal regulation for self-aligned laser transfer printing

Fig. 2

a Schematic illustration of a TCGC-embedded adhesive stamp: (i) Exploded view of the stamp. (ii) and (iii): SEM images of the TCGC and microcavity array. (iv) and (v): Schematic diagrams of TCGC preparation. b IR absorbance of carbonized products prepared using different APN of UV laser. c Temperature field distribution in PI layer during UV laser ablation. d Layer-by-layer Raman spectral analysis of TCGC. e Measured transfer accuracy of chips corresponding to different cavity widths at different gaps when the cavity temperature is 120 °C. f Effect of microcavity ratios (W/L) on the measured adhesion (cooling from 80 °C to 20 °C) and simulated interfacial crack tip ERR under a 0.5 W IR laser irradiation for 60 ms. g Influence of microcavity height-to-width ratios (H/W) on the measured adhesion (cooling from 80 °C to 20 °C) and thrust force (heating from 20 °C to 120 °C)

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