3results about How to "Increase entropy" patented technology

The gradient hard alloy comprises a core layer and surface layers, the core layer is located between the two surface layers, each of the core layer and the surface layers comprises a hard phase and a high-entropy binding phase, and the hard phase comprises WC and a cubic phase compound; components of the high-entropy binding phase comprise at least five of first transition metal elements and second transition metal elements, the first transition metal elements comprise at least two of Co, Ni and Fe, the second transition metal elements comprise at least three of Re, Ru, Rh, Pd, Os, Ir and Pt, the mass content of the high-entropy binding phase on the surface layer is 1.0-2.0 times of the nominal mass content, the surface layer is free of cubic phase compounds, and the thickness of the cubic phase compounds is 0.5-1.5 mm. The gradient hard alloy has the advantages of being high in density, free of third phase precipitation and good in alloy performance.

This application discloses a self-excited random number generation system and method based on a nanophotonic PUF, belonging to the field of hardware anti-counterfeiting technology. The system includes a light source, a filtering unit, an image generation unit, and an image processing unit. The light source outputs an incident beam. The filtering unit performs spatial filtering and collimation amplification on the incident beam, and filters out high-frequency noise and stray light in the incident beam, outputting a uniform beam. The image generation unit includes a spatial light modulator and a nanophotonic PUF. The spatial light modulator is used to receive the uniform beam output by the filtering unit and modulate the uniform beam according to the modulation source data. The nanophotonic PUF generates a speckle image after being excited by the uniform beam. The image processing unit processes the speckle image and generates modulation source data, and simultaneously sends the modulation source data to the image generation unit to modulate the uniform beam to form a self-excited loop. The image processing unit is also used to process the speckle image to form a binary random matrix, and serialize the random matrix into a one-dimensional random bit sequence as a random number. This application not only features high random number entropy, strong unpredictability, and excellent anti-attack capability, but also has the advantages of good system compatibility and independence from external data dependence, making it widely applicable in scenarios such as high-security key generation and encrypted communication.

The present disclosure belongs to the field of battery materials, and in particular relates to a lithium-rich layered oxide material and preparation method therefor and application thereof. Primary particles of the lithium-rich layered oxide material according to the present disclosure are polyhedrons with an exposed {010} crystal plane, and an area of the {010} crystal plane accounts for >20%. In the present disclosure, by introducing a design of multiple cationic component with a high entropy into the LLO material, the configurational entropy of the system is improved, thereby providing the material with a high structural stability and a stable ion diffusion channel; at the same time, the changes in entropy further affect the thermodynamically stable structure and crystal plane energy of the system, achieve local minimization of Gibbs free energy, and induce the exposure of the {010} crystal plane with a fast lithium ion transport channel, which provides more channels for rapid ion migration and improves electrode reaction kinetics. Experimental results show that the lithium-rich layered oxide material according to the present disclosure has a high rate performance and a long cycle stability when used as a cathode material of a lithium battery.