No abstract

For the first time, multiple parallel microchannels in a single microgroove have been fabricated by the heating-assisted micromolding in capillaries technique (HAMIMIC). Microchannel development, cross-sectional shape, and length were all explored in depth. The factors affecting the cross-sectional shape and length of the double-microchannel were also discussed. Finally, a special-shaped PDMS guiding mold was designed to control the cross-sectional shape and length of multiple parallel microchannels for controlled growth. The HAMIMIC technique provides a low-cost, straightforward, and repeatable way to create multiple parallel microchannels in a single microgroove, and will promote the progress of bifurcated vessels and thrombus vessels preparation technology.

Due to the ultra-wide bandgap, high transmittance in the ultraviolet (UV) region, and excellent environmental stability, zinc gallium oxide (ZnGa2O4) has attracted considerable interest in deep-ultraviolet (DUV) photodetectors. Here, ZnGa2O4 thin films were fabricated on different substrates by PLD with a post-annealing process under an oxygen atmosphere. It is found that the substrates have great impact on the morphology, structure, and crystal quality of thin films. After annealing, the thin film quality has been improved. The metal semiconductor-metal (MSM) photodetector shows excellent reproducible characteristics and fast response performance, which demonstrates great potential in the next-generation optoelectronic devices.