An analytical model was developed to describe Si？As alloy solidification in the whole range of measured interface velocity. It is demonstrated that at low interface velocity, the solidification occurs in the initial ...An analytical model was developed to describe Si？As alloy solidification in the whole range of measured interface velocity. It is demonstrated that at low interface velocity, the solidification occurs in the initial transient regime. The model leads to good comparison with the experimental data taking both local nonequilibrium effects at high interface velocity and steady state effects at low interface velocity into account. The local nonequilibrium diffusion effects shrink the initial transient period and lead to diffusionless solidification at high interface velocity.展开更多
Thermal metamaterials represent a transformative paradigm in modern physics,synergizing thermodynamic principles with metamaterial engineering to master heat flow at will.As next-generation technologies demand multi-s...Thermal metamaterials represent a transformative paradigm in modern physics,synergizing thermodynamic principles with metamaterial engineering to master heat flow at will.As next-generation technologies demand multi-scale thermal control,this field urgently requires systematic frameworks to unify its multidisciplinary advances.Curated through a global collaboration involving over 50 specialists across 25 subdisciplines,this review primarily summarizes two decades of advancements,ranging from theoretical breakthroughs to functional implementations.The review reveals groundbreaking innovations in heat manipulation through the exploration of both classical and non-classical transport regimes,topological thermal control mechanisms,and quantum-informed phonon engineering strategies.By bridging physical insights like non-Hermitian thermal dynamics and valleytronic phonon transport with cutting-edge applications,we demonstrate paradigm-shifting capabilities:environment-adaptive thermal cloaks,AI-optimized metamaterials,and nonlinear thermal circuits enabling heat-based computation.Experimental milestones include 3D thermal null media with reconfigurable invisibility and thermal designs breaking classical conductivity limits.This collaborative effort establishes an indispensable roadmap for physicists,highlighting pathways to quantum thermal management,entropy-controlled energy systems,and topological devices.As thermal metamaterials transition from laboratory marvels to technological cornerstones,this work provides the foundational lexicon and design principles for the coming era of intelligent thermal matter.展开更多
基金partially supported by RFBR, research project No. 14-48-03535
文摘An analytical model was developed to describe Si？As alloy solidification in the whole range of measured interface velocity. It is demonstrated that at low interface velocity, the solidification occurs in the initial transient regime. The model leads to good comparison with the experimental data taking both local nonequilibrium effects at high interface velocity and steady state effects at low interface velocity into account. The local nonequilibrium diffusion effects shrink the initial transient period and lead to diffusionless solidification at high interface velocity.
文摘Thermal metamaterials represent a transformative paradigm in modern physics,synergizing thermodynamic principles with metamaterial engineering to master heat flow at will.As next-generation technologies demand multi-scale thermal control,this field urgently requires systematic frameworks to unify its multidisciplinary advances.Curated through a global collaboration involving over 50 specialists across 25 subdisciplines,this review primarily summarizes two decades of advancements,ranging from theoretical breakthroughs to functional implementations.The review reveals groundbreaking innovations in heat manipulation through the exploration of both classical and non-classical transport regimes,topological thermal control mechanisms,and quantum-informed phonon engineering strategies.By bridging physical insights like non-Hermitian thermal dynamics and valleytronic phonon transport with cutting-edge applications,we demonstrate paradigm-shifting capabilities:environment-adaptive thermal cloaks,AI-optimized metamaterials,and nonlinear thermal circuits enabling heat-based computation.Experimental milestones include 3D thermal null media with reconfigurable invisibility and thermal designs breaking classical conductivity limits.This collaborative effort establishes an indispensable roadmap for physicists,highlighting pathways to quantum thermal management,entropy-controlled energy systems,and topological devices.As thermal metamaterials transition from laboratory marvels to technological cornerstones,this work provides the foundational lexicon and design principles for the coming era of intelligent thermal matter.
