Self-powered sensing technologies are increasingly sought for intelligent and autonomous marine environmental monitoring.A Faraday cage-enabled triboelectric nanogenerator(FC-TENG)is developed by incorporating a FeCoC...Self-powered sensing technologies are increasingly sought for intelligent and autonomous marine environmental monitoring.A Faraday cage-enabled triboelectric nanogenerator(FC-TENG)is developed by incorporating a FeCoCrNiAl alloy powder layer,enabling efficient harvesting of low-frequency mechanical energy.The quasi-enclosed conductive architecture mimics a Faraday cage,effectively confining electrostatic charges and suppressing edge-induced dissipation,thereby enhancing charge retention.Compared to single-metal triboelectric layers,the FC-TENG exhibits 4.86-,3.57-,and 2.76-fold increases in open-circuit voltage(VOC,1276.27 V),short-circuit current(ISC,63.69μA),and transferred charge(QSC,29.55 nC),respectively.Its hydrophobic surface further ensures environmental robustness and stable output under humid conditions.With an optimized load resistance of 60 MΩ,the FC-TENG device achieves a peak power of~4.08 mW and reliably powers LED arrays and environmental sensors,while enabling efficient energy storage across a wide frequency range.Furthermore,a wave-driven FC-TENG system integrated with wireless communication and visual feedback modules enables real-time marine motion monitoring without external power.This work introduces the Faraday cage-inspired triboelectric device based on microspherical alloy powder,offering enhanced charge retention,humidity tolerance,and dual-mode functionality in power generation and marine wave sensing.The proposed strategy provides a robust and scalable architecture for future self-powered systems operating in harsh environments.展开更多
In the lattice system,when the synthetic flux reaches aπphase along a closed loop under the synthetic gauge field,destructive interference occurs and gives rise to the localization phenomenon.This is known as the Aha...In the lattice system,when the synthetic flux reaches aπphase along a closed loop under the synthetic gauge field,destructive interference occurs and gives rise to the localization phenomenon.This is known as the Aharonov-Bohm(AB)caging effect.It provides a powerful tool for the study of quantum transport and dynamical effects.In the system where lattice sites possess internal structure and the underlying gauge field is non-Abelian,localization can also occur,forming the non-Abelian AB caging.Here,we propose an experimental scheme to synthesize non-Abelian gauge fields with a single trapped ion by coupling multiple internal levels and Fock states in its motion via laser fields.In contrast to the Abelian AB caging,we numerically observe that the non-Abelian AB caging occurs either when the interference matrix is nilpotent,or when the initial state is specifically set.Our experimental scheme broadens the study of localization phenomena and provides a novel tool for the study of non-Abelian physics.展开更多
Magnetoresistance in superconducting Nb films perforated with rectangular arrays of antidots （holes） is investigated at various temperatures and currents. Normally, the magnetoresistance increases with the increasin...Magnetoresistance in superconducting Nb films perforated with rectangular arrays of antidots （holes） is investigated at various temperatures and currents. Normally, the magnetoresistance increases with the increasing magnetic field. In this paper, we report a reverse behavior in a certain range of high fields after vortex reconfiguration transition, where the resistances at non-matching fields are smaller than those in the low field regime. This phenomenon is due to a strong caging effect, in which the interstitial vortices are trapped among the pinned multiquanta vortices. This effect is temperature and current dependent.展开更多
基金supported by the Opening Fund of State Key Laboratory of Fire Science(SKLFS)under Grant No.HZ2024-KF04the Open Project Program of Shanxi Key Laboratory of Advanced Semiconductor Optoelectronic Devices and Integrated Systems(No.2024SZKF01)the New Chongqing Youth Innovation Talent Project(CSTB2024NSCQ-QCXMX0072).
文摘Self-powered sensing technologies are increasingly sought for intelligent and autonomous marine environmental monitoring.A Faraday cage-enabled triboelectric nanogenerator(FC-TENG)is developed by incorporating a FeCoCrNiAl alloy powder layer,enabling efficient harvesting of low-frequency mechanical energy.The quasi-enclosed conductive architecture mimics a Faraday cage,effectively confining electrostatic charges and suppressing edge-induced dissipation,thereby enhancing charge retention.Compared to single-metal triboelectric layers,the FC-TENG exhibits 4.86-,3.57-,and 2.76-fold increases in open-circuit voltage(VOC,1276.27 V),short-circuit current(ISC,63.69μA),and transferred charge(QSC,29.55 nC),respectively.Its hydrophobic surface further ensures environmental robustness and stable output under humid conditions.With an optimized load resistance of 60 MΩ,the FC-TENG device achieves a peak power of~4.08 mW and reliably powers LED arrays and environmental sensors,while enabling efficient energy storage across a wide frequency range.Furthermore,a wave-driven FC-TENG system integrated with wireless communication and visual feedback modules enables real-time marine motion monitoring without external power.This work introduces the Faraday cage-inspired triboelectric device based on microspherical alloy powder,offering enhanced charge retention,humidity tolerance,and dual-mode functionality in power generation and marine wave sensing.The proposed strategy provides a robust and scalable architecture for future self-powered systems operating in harsh environments.
基金supported by the National Natural Science Foundation of China(Grant Nos.92165206,12275090,and 12304554)the Innovation Program for Quantum Science and Technology(Grant Nos.2021ZD0301603 and 2021ZD0302303)。
文摘In the lattice system,when the synthetic flux reaches aπphase along a closed loop under the synthetic gauge field,destructive interference occurs and gives rise to the localization phenomenon.This is known as the Aharonov-Bohm(AB)caging effect.It provides a powerful tool for the study of quantum transport and dynamical effects.In the system where lattice sites possess internal structure and the underlying gauge field is non-Abelian,localization can also occur,forming the non-Abelian AB caging.Here,we propose an experimental scheme to synthesize non-Abelian gauge fields with a single trapped ion by coupling multiple internal levels and Fock states in its motion via laser fields.In contrast to the Abelian AB caging,we numerically observe that the non-Abelian AB caging occurs either when the interference matrix is nilpotent,or when the initial state is specifically set.Our experimental scheme broadens the study of localization phenomena and provides a novel tool for the study of non-Abelian physics.
基金Project supported by the National Basic Research Program of China (Grant Nos. 2009CB929100, 2011CBA00107, and 2012CB921302)the National Science Foundation of China (Grant Nos. 10974241 and 11104335)
文摘Magnetoresistance in superconducting Nb films perforated with rectangular arrays of antidots （holes） is investigated at various temperatures and currents. Normally, the magnetoresistance increases with the increasing magnetic field. In this paper, we report a reverse behavior in a certain range of high fields after vortex reconfiguration transition, where the resistances at non-matching fields are smaller than those in the low field regime. This phenomenon is due to a strong caging effect, in which the interstitial vortices are trapped among the pinned multiquanta vortices. This effect is temperature and current dependent.
