The global incidence of pediatric obesity has increased rapidly over the past few decades.Scientific evidence has repeatedly shown that behavioral and emotional challenges are frequently observed in children with over...The global incidence of pediatric obesity has increased rapidly over the past few decades.Scientific evidence has repeatedly shown that behavioral and emotional challenges are frequently observed in children with overweight or obesity[1-2],as evidenced by a landmark case-control design study revealing that obese children have 7.15 times higher odds of developing mental health disorders in adolescence than their normal-weight peers[1].展开更多
The volume of securely encrypted data transmission increases continuously in modern society with all things connected.Towards this end,true random numbers generated from physical sources are highly required for guaran...The volume of securely encrypted data transmission increases continuously in modern society with all things connected.Towards this end,true random numbers generated from physical sources are highly required for guaranteeing security of encryption and decryption schemes for exchanging sensitive information.However,majority of true random number generators(TRNGs)are mechanically rigid,and thus cannot be compatibly integrated with some specific flexible platforms.Herein,we present a flexible and stretchable bionic TRNG inspired by the uniqueness and randomness of biological architectures.The flexible TRNG film is molded from the surface microstructures of natural plants(e.g.,ginkgo leaf)via a simple,low-cost,and environmentally friendly manufacturing process.In our proof-of-principle experiment,the TRNG exhibits a fast generation speed of up to 1.04 Gbit/s,in which random numbers are fully extracted from laser speckle patterns with a high extraction rate of 72%.Significantly,the resulting random bit streams successfully pass all randomness test suites including NIST,TestU01,and DIEHARDER.Even after 10,000 times cyclic stretching or bending tests,or during temperature shock(-25-80℃),the bionic TRNG still reveals robust mechanical reliability and thermal stability.Such a flexible TRNG shows a promising potential in information security of emerging flexible networked electronics.展开更多
基金Natural Science Foundation of Beijing Municipality under Grant No.7232057。
摘要The global incidence of pediatric obesity has increased rapidly over the past few decades.Scientific evidence has repeatedly shown that behavioral and emotional challenges are frequently observed in children with overweight or obesity[1-2],as evidenced by a landmark case-control design study revealing that obese children have 7.15 times higher odds of developing mental health disorders in adolescence than their normal-weight peers[1].
基金This study was financially supported by the funds of the Science Challenging Project(No.TZ2018003)the National Natural Science Foundation of China(Nos.12175204,61875178,61805218,and 12104423).
摘要The volume of securely encrypted data transmission increases continuously in modern society with all things connected.Towards this end,true random numbers generated from physical sources are highly required for guaranteeing security of encryption and decryption schemes for exchanging sensitive information.However,majority of true random number generators(TRNGs)are mechanically rigid,and thus cannot be compatibly integrated with some specific flexible platforms.Herein,we present a flexible and stretchable bionic TRNG inspired by the uniqueness and randomness of biological architectures.The flexible TRNG film is molded from the surface microstructures of natural plants(e.g.,ginkgo leaf)via a simple,low-cost,and environmentally friendly manufacturing process.In our proof-of-principle experiment,the TRNG exhibits a fast generation speed of up to 1.04 Gbit/s,in which random numbers are fully extracted from laser speckle patterns with a high extraction rate of 72%.Significantly,the resulting random bit streams successfully pass all randomness test suites including NIST,TestU01,and DIEHARDER.Even after 10,000 times cyclic stretching or bending tests,or during temperature shock(-25-80℃),the bionic TRNG still reveals robust mechanical reliability and thermal stability.Such a flexible TRNG shows a promising potential in information security of emerging flexible networked electronics.