Enhanced Boiling Heat Transfer Performance on Microstructured Silicate Glass Surfaces Derived from Inorganic Polymer‐Based Soft Lithography

Abstract

A surface fabrication method based on soft‐lithography with inorganic polymer is developed for superior boiling heat transfer performance. Porous and nonporous micropillars are fabricated with selective control of wettability in designed manner. This method is expected to substitute pervious metal and silicon based methods with a cost‐effective material and simple fabrication process.

Array Modified Molded Alumina Supported PdAg Catalyst for Selective Acetylene Hydrogenation: Intrinsic Kinetics Enhancement and Thermal Effect Optimization

“…The macroporous structure of HT-Al 2 O 3 is conducive to heat and mass transfer, which is of benefit to maintain the stability of the catalyst. 5,6 Asplund reported that, compared with low temperature calcined alumina (LT-Al 2 O 3 ), the smaller diffusion resistance brought by the macroporous structure of the HT-Al 2 O 3 facilitates the diffusion of the obtained product and reaction heat. 7 Therefore, the Pd/HT-Al 2 O 3 catalyst exhibits better anticoke ability and structure stability.…”

“…Among the various kinds of alumina, high temperature alumina (HT-Al 2 O 3 ), which is usually calcined above 1000 °C, is typically used for exothermic reactions, such as ethylene epoxidation, acetylene selectivity hydrogenation, and steam reforming reactions. The macroporous structure of HT-Al 2 O 3 is conducive to heat and mass transfer, which is of benefit to maintain the stability of the catalyst. , Asplund reported that, compared with low temperature calcined alumina (LT-Al 2 O 3 ), the smaller diffusion resistance brought by the macroporous structure of the HT-Al 2 O 3 facilitates the diffusion of the obtained product and reaction heat . Therefore, the Pd/HT-Al 2 O 3 catalyst exhibits better anticoke ability and structure stability.…”

Inorganic Polymer Micropillar‐Based Solution Shearing of Large‐Area Organic Semiconductor Thin Films with Pillar‐Size‐Dependent Crystal Size

“…AHPCS resin is placed on top of a substrate (glass or PDMS), followed by the placement of PDMS mold on top. Subsequent UV curing induces cross‐linking and hardens AHPCS . The PDMS can easily be lifted off the cross‐linked AHPCS surface.…”

“…As with silicon, the surface of AHPCS can be easily modified to tune its wettability. For instance, after hydrolysis reaction in NaOH solution (which generates hydroxyl groups on the surface of AHPCS), the water contact angle of AHPCS changes from 92° to 12° (Figure c,d) . To make the surface hydrophobic, the hydroxyl groups were reacted with trichloro‐(1 H ,1 H ,2 H ,2 H ‐perfluorooctyl)silane self‐assembled monolayer, which changed the water contact angle of AHPCS micropillar surface from 12° to 145° (Figure e) .…”