Macro Scale

Dr. Nenad Miljkovic from University of Illinois has developed an invention which improves the condensation of organic fluids. Vapor condensation is an ubiquitous process applied in a wide range of industrial processes including power generation, distillation, air conditioning and refrigeration systems and natural gas processing. Over the past several decades, water-repellent or hydrophobic surfaces have been developed for water condensation. However, this approach does not work with low-surface-tension fluids such as alcohols and hydrocarbons. Other approaches, such as omniphobic surfaces, fail for condensation applications. Starting from regular metal tubes (e.g. copper), Dr. Miljkovic and coworkers developed scalable nanostructured lubricant infused surfaces (LIS) that can sustain rigorous condensation conditions.

Dr. Nenad Miljkovic’s research group has developed a new technology to reduce the susceptibility of metallic surfaces to fouling/scaling. The invention is a thin (<~100 nm) multi-layered solid-state coating that reduces the surface energy  and nucleation site density of metals such as aluminum, copper, and more. The technology has been demonstrated to reduce scale accumulation by 95% as compared to uncoated surfaces and eliminates the intrinsic durability issues of oil-based coatings.

Applications for the technology include the reduction of scale build-up on air conditioning and refrigeration systems and the prevention of coke deposition for aviation applications.

Dr. Damien Guironnet from the University of Illinois has developed a chemical recycling method for upcycling propylene and isobutene solid wastes. This technique may be used to produce higher value feedstock materials (e.g., propylene and isobutene) from polyethylene and polypropylene with high selectivity. This process achieves high yield, in comparison with other chemical recycling techniques, through a combination of reactor design, catalyst selection, and process optimization.