The aim of the present study is the prediction of critical conditions (including critical strain and flow stress) for the initiation of dynamic recrystallization during thermo-mechanical processing of plain carbon steels. For this propose, torsion tests were conducted at different temperature (1050, 1100 and 1150˚C) and strain rates (0.002, 0.02 and 0.2/s). All flow curves showed a peak st...

Metasurfaces have recently gained increasing attention and shown great potential in replacing bulk optics with ultracompact flat metadevices, owing to their unprecedented capabilities of molding optical fields surface‐confined configurations exceedingly low losses. However, most existing metasurfaces are typically passive feature well‐defined responses determined by material compositions config...

Abstract Halide perovskite metasurfaces are attracting increasing interest for applications in light-emitting and display technologies. To access the wide range of colors required these applications, main mechanism exploited thus far has been chemical engineering compounds – this constitutes a significant limitation dynamic switching optical response desirable actual devices. Here we demonstrat...

Abstract The threshold proxy re‐encryption (tPRE) algorithm not only ensures the separation of data ownership and use right, but also prevents a single from doing evil. In order to avoid collusion multiple proxies, this paper constructs decentralized crypto network (DCN) based on blockchain technology tPRE. DCN is more than key management system, while expanding storage capacity network. Combin...