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HHIC

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	What is HHIC? Hyperthermal Hydrogen Induced Crosslinking (HHIC) is derived from our experimental findings that were later translated to our proprietary technology. Briefly, whenthe kinetic energy of a hydrogen molecule or proton is well controlled under a preset value, its collision with the hydrogen atom in a C-H bond will cause a very efficient kinematic energy transfer and thus a breakage of that C-H bond only without translating further energy to damage surrounding bonds and structures. The C radical obtained after C-H bond break-up will link with adjacent C radicals, resulting in effective crosslinking. As such, the HHIC technique can crosslink and fix anychemical functional group onto a substrate. Also, the surface property of the substrate can be modified at will by tuning the chemical functional group fixed. The only prerequisite is that both the functional group and substrate bear C-H bonds, that are substantial in almost all kinds of organic and polymeric systems. Therefore, UV, light irradiation or thermal curing are not required to fix the polymer or functional group, which are usually damaging. Why choose HHIC? Our proprietary HHIC method allows well-controlled and specific crosslinking and grafting of monolayer chemical functionalities on different surfaces. Further, HHIC can be used to engineer surface of both electrical insulating products and conductive products. The induced cross-linking reactions by HHIC produce a stable molecular layer having a controllable degree of cross-linking, but retains the desirable chemical functionalities of the precursor molecules. Comparison of HHIC with other common coating techniques can be found in the table on the right. Our Patents US Lau, Leo W. M., et al., (2015). Method of Producing Hyperthermal Hydrogen Molecules and Using the Same for Selectively Breaking C-H And/or Si-H Bonds of Molecules at or on Substrate Surfaces. HL Science & Technology Limited, assignee. US 9,113,544 B2. Lau, Leo W. M., et al., (2014). Method for fabrication of layered heterojunction polymeric devices. HL Science & Technology Limited, assignee. US 8,648,336 B2. Canada Lau, L. W. M., et al., (2010). Method of producing hyperthermal hydrogen molecules and using the same for selectively breaking C-H and/or Si-H bonds of molecules at or on substrate surfaces. HL Science & Technology Limited, assignee. CA 275,3619 China Lau, L. W. M., et al., (2011). Method of producing hyperthermal hydrogen molecules and using the same for selectively breaking C-H and/or Si-H bonds of molecules at or on substrate surfaces. HL Science & Technology Limited, assignee. CN 102414345 B Lau, L. W. M., et al., (2010). Method for fabrication of layered heterojunction polymeric devices. HL Science & Technology Limited, assignee. ZL 2010 8 0019797.X.