Publications by authors named "Yupu Ma"
Creativity, a high-order cognitive ability, has received wide attention from researchers and educators who are dedicated to promoting its development throughout one's lifespan. Currently, creativity is commonly assessed with divergent thinking tasks, such as the Alternative Uses Task. Recent advancements in neuroimaging techniques have enabled the identification of brain markers for high-order cognitive abilities.
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- - This text discusses how conductive thermal metamaterials enable functions like thermal cloaking and camouflage, but they are limited to controlling heat flow in one direction.
- - The focus shifts to radiative thermal metamaterials, which can manage heat emission in multiple directions; however, they have not been studied as thoroughly as their conductive counterparts.
- - The study investigates a specific microstructure (metal/insulator/metal) that uses magnetic polaritons to achieve thermal camouflage, illusion, and messaging, showing potential for new thermal applications through advanced radiative metasurfaces.
Scalable Approach to Construct Self-Assembled Graphene-Based Films with An Ordered Structure for Thermal Management.
ACS Appl Mater Interfaces
December 2018
Article Synopsis
- Large-area oxidized cellulose nanocrystal (OCNC)/graphene nanocomposites were created using a simple and cost-effective evaporation-induced self-assembly method followed by thermal curing.
- The resulting nanocomposites showcased well-aligned nano-sized graphene layers separated by OCNC, enhancing thermal connectivity in the material.
- These composites achieved an impressive thermal conductivity of 25.66 W/m K, with a remarkable thermal conductivity enhancement of 7235% using only 4.1 vol % graphene, making it the best-performing material of its kind under 70 wt % filler content to date.
The behaviors of the light propagation in the phosphor play a vital role in determining the optical performance of the phosphor-converted light-emitting diodes (pc-LEDs). In this paper, we presented a general model based on the radiative transfer equation integrated with fluorescence (FRTE) to describe the overall light propagating properties in the phosphor layer in terms of light absorption, strong forward scattering, and fluorescence. The model was established by accounting for general boundary conditions including the LED Lambertian incidence, the diffuse reflection at the substrate/reflector, and the Fresnel reflection at the phosphor-air interface.
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