Aging of a vanadium precursor solution and its influence on the photoelectrochemical water oxidation performance of BiVO4 photoanodes The aging duration of a vanadium precursor solution, vanadyl acetylacetonate in methanol, is identified as a factor that affects the reproducibility of BiVO4 photoanode fabrication. The findings point to the importance of the composition of BiVO4 films for highly repr...

A comprehensive metabolic map for the production of bio-based chemicals A KAIST research team developed a comprehensive metabolic map which shows the current status of representative industrial chemicals that are produced through biological and/or chemical reactions. This map is expected to serve as a blueprint for visual and intuitive inspection of biological and/or chemical reactions for the production of chemic...

Innovative nuclear fuel containing lumped Gd2O3 burnable absorber Profs. Yonghee Kim and Ho Jin Ryu from the Department of Nuclear and Quantum Engineering (NQe) have developed an innovative burnable absorber fuel that is composed of lumped Gd2O3 inserted inside the UO2 oxide fuel pellet. The unique neutronic performance of the newly developed burnable absorber fuel design presents a longer fuel cyc...

Optimal levee installation planning for highway infrastructure protection against sea level rise A simulation-based levee installation optimization model is proposed to minimize highway network delays due to inundations. The findings are applied to a real-world network in California for a 0.5 m sea level rise, and it is found that there are critical shorelines to protect with priority.   Article | Fall ...

Memristive synapse devices for a brain-inspired neuromorphic chip A novel analog-type memristor was developed for use in an electronic synapse element that is essential for the implementation of hardware-based neuromorphic computing. The formation of an atomically thin metal filament plays an important role in achieving the synaptic characteristics of a memristor.   Article  |  Fall 2019 ...

Trajectory and survivability estimation of reentry space debris KAIST researchers have developed trajectory and survivability estimation program for reentry space debris, which can consider the effects of high- temperature gas dynamics and separation behavior, has been developed.   Article  |  Fall 2019     The rapid increase in the amount of space debris is becoming a threat to ...