【摘 要】
：
The systems exhibiting sustainable external energy exchange are abundant,e.g.,biological organisms\' reaction to external stimuli while maintaining a constant energy exchange with the surrounding.In a linear mechanical system exhibiting an external ener
【机 构】
：
School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China
【出 处】
：
中国科学：物理学 力学 天文学（英文版）
论文部分内容阅读
The systems exhibiting sustainable external energy exchange are abundant,e.g.,biological organisms\' reaction to external stimuli while maintaining a constant energy exchange with the surrounding.In a linear mechanical system exhibiting an external energy gain or release,the recently proposed odd elasticity theory can characterize the overall stress and strain response.However,realizing the required odd elasticity is still challenging.In this work,we discovered that the smart materials with designed feedbacks can achieve this odd elasticity,thereby providing a practical platform to analyze the phenomenon related to this novel elasticity theory.We also demonstrated this idea by designing a non-reciprocal Rayleigh wave via odd elasticity and the equivalent piezoelectricity with linear feedback.The underpinned electric energy scenario was also examined.Our work establishes a method to easily realize the materials with odd elastic behaviors and explore the rich phenomena related to non-Hermitian systems.
其他文献
Dear Editor,rnThe insect cuticle is a multifunctional coat that defines and stabilizes the shape of the body,appendages and internal organs,serves as a barrier against water and chemical compounds,such as insecticides,prevents infection and protects again
Dear Editor,rnIn the last century,H1N1,H2N2,and H3N2 influenza viruses caused pandemics in 1918,1957,and 1968,respec-tively.In 2009,a novel H1N1 reassortant jumped from pigs to humans and caused a fourth influenza pandemic.Different lineages of H3N2 influ
Dear editor,rnEndotoxic shock usually results from infection-induced physiologic,pathologic,and biologic abnormalities (Singer et al.,2016).Undeniably,it is still a profoundly damaging and life-threatening condition for many individuals (Guan et al.,2019;
In spite of the success of the cold dark matter (CDM) mod-els working well at large scales,several discrepancies have arisen regarding CDM on galaxy scales.Some of these are described as the cusp-core,diversity,missing satellites,and too-big-to-fail anoma
Self-interacting dark matter (SIDM) is a leading candidate proposed to solve discrepancies between predictions of the prevailing cold dark matter theory and observations of galaxies.Many SIDM models predict the existence of a light force carrier that medi
We consider both gauged and ungauged minimal supergravities in five dimensions and analyse the charged rotating solutions with two equal angular momenta J.When the electric charge Q ～ J2/3 with some specific coefficient,we find new extremal black objects
The usage of full-color imaging in digital pathology produces significant results.Compared with a grayscale image or a pseudo-color image containing contrast information,a full-color image can identify and detect the target object better with color textur
The thermal issue is of great importance during the layout design of heat source components in systems engineering,especially for high functional-density products.Thermal analysis requires complex simulation,which leads to an unaffordable computa-tional b
Chiral metasurfaces have different electromagnetic responses with circularly polarized lights,showing as circular dichroism and optical activity.Here,a novel kind of all-silicon chiral metasurface is proposed by introducing destructive interference betwee
Anharmonic lattice vibrations play pivotal roles in the thermal dynamics in condense matters and affect how the atoms interact and conduct heat.An in-depth understanding of the microscopic mechanism of phonon anharmonicity in condensed systems is critical