Papers
2
Total Citations
80
H-Index
2
About
Changhao Han is a materials scientist whose work sits at the intersection of graphene engineering and smart responsive systems. His research focuses on developing scalable, energy-efficient methods to tune the properties of graphene oxide (GO) for next-generation sensors and actuators. Han’s major contributions center on photoreduction techniques: he pioneered the use of focused sunlight and moderate flash reduction to selectively remove oxygen-containing groups from GO sheets. This approach not only restores electrical conductivity without harsh chemicals but also creates materials with precisely controlled moisture sensitivity. His most cited work, “Sunlight‐Reduced Graphene Oxides as Sensitive Moisture Sensors for Smart Device Design” (60 citations), demonstrates how this green fabrication method yields high-performance humidity sensors ideal for wearable and IoT applications. In a complementary study (20 citations), Han showed that flash reduction can produce moisture-responsive graphene actuators, where controlled oxygen-group removal enables reversible bending in response to humidity. These achievements highlight his ability to bridge fundamental materials chemistry with practical device engineering, offering a low-cost, environmentally friendly pathway to smart materials. Han’s work is particularly notable for its elegance and simplicity—turning sunlight and flash lamps into precision tools for graphene-based technology.
Research Focus
Key Achievements
Top Papers
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