A5100760192- Acoustic Wave Phenomena Research
- Metamaterials and Metasurfaces Applications
- Advanced Materials and Mechanics
- Ultrasonics and Acoustic Wave Propagation
- Vibration Control and Rheological Fluids
- Postharvest Quality and Shelf Life Management
- Acoustic Wave Resonator Technologies
- Innovative Energy Harvesting Technologies
- Cellular and Composite Structures
- Heat Transfer and Boiling Studies
- Structural Analysis and Optimization
- Plant Gene Expression Analysis
- Plant Surface Properties and Treatments
- Advanced Fiber Optic Sensors
- Combustion and flame dynamics
- Heat Transfer and Optimization
- Plant biochemistry and biosynthesis
- Heat Transfer Mechanisms
- Structural Health Monitoring Techniques
- Advanced Antenna and Metasurface Technologies
- Fluid Dynamics and Turbulent Flows
- Mechanical and Optical Resonators
- Noise Effects and Management
- Nonlinear Photonic Systems
- Hydraulic Fracturing and Reservoir Analysis
Inner Mongolia University
2025
Changhua Christian Hospital
2025
Yancheng First People's Hospital
2025
Xuzhou Medical College
2025
Nantong University
2025
Huaiyin Institute of Technology
2024-2025
Research Institute of Petroleum Exploration and Development
2015-2025
China National Petroleum Corporation (China)
2025
Nanjing Agricultural University
2014-2024
University of Shanghai for Science and Technology
2024
Elastic metamaterials have been extensively investigated due to their significant effects on controlling propagation of elastic waves. One the most interesting properties is generation band gaps, in which subwavelength waves cannot propagate through. In study, a new class active with negative capacitance piezoelectric shunting presented. We first dispersion curves and gap control an mass-in-mass lattice system. The unit cell system consists inner masses connected by linear springs represent...
Significance On-skin electronics are usually fabricated by patterning conventional inorganic materials, novel organic or emerging nanomaterials on flexible polymer substrates. Consequently, the state-of-the-art on-skin suffer from expensive precursor costly fabrication facilities, complex processes, and limited disposability. By using widely accessible pencils papers as tools, we have developed a variety of cost-effective disposable electronic devices, ranging biophysical sensors sweat...
Materials made from active, living, or robotic components can display emergent properties arising local sensing and computation. Here, we realize a freestanding active metabeam with piezoelectric elements electronic feed-forward control that gives rise to an odd micropolar elasticity absent in energy-conserving media. The non-reciprocal modulus enables bending shearing cycles convert electrical energy into mechanical work, vice versa. sign of this elastic is linked non-Hermitian topological...
The ability to control elastic wave propagation at a deep subwavelength scale makes locally resonant metamaterials very relevant. A number of abilities have been demonstrated such as frequency filtering, guiding, and negative refraction. Unfortunately, few develop into practical devices due their lack tunability for specific frequencies. With the help multi-physics numerical modeling, experimental validation an adaptive metamaterial integrated with shunted piezoelectric patches has performed...
Membrane-type acoustic metamaterials (MAMs) have demonstrated unusual capacity in controlling low-frequency sound transmission/reflection. In this paper, an analytical vibroacoustic membrane model is developed to study transmission behavior of the MAM under a normal incidence. The composed prestretched elastic with attached rigid masses. To accurately capture finite-dimension mass effects on deformation, point matching approach adopted by applying set distributed forces along interfacial...
Space-time-modulated mechanical systems offer a different paradigm in the design of advanced nonreciprocal devices. Physically realizing materials with properties rapidly tuned both space and time, however, presents several challenges. This study introduces an elastic metamaterial coupling stiffness modulated time by programmably pumping ac currents into coils. It theoretically experimentally demonstrates tunable, propagation flexural waves on continuum. device suggests interesting...
By considering the elastic membrane's dissipation, membrane-type acoustic metamaterial (MAM) has been demonstrated to be a super absorber for low-frequency sound. In paper, theoretical vibroacoustic plate model is developed reveal sound energy absorption mechanism within MAM under plane normal incidence. Based on in conjunction with point matching method, in-plane strain of membrane due resonant and antiresonant motion attached masses can accurately captured by solving coupled...
Real-time engineering of elastic rays in solid materials is crucial for several applications relevant to active noise and vibration cancellation inverse methods aiming either reveal or dissimulate the presence foreign bodies. Here, we introduce a programmable metasurface first time with sensing-and-actuating units, allowing adapt reprogram its wave control functionalities real time. The units behave following decoupled 'feedforward' sensor-to-actuator loops governed by local transfer...
A great deal of research has been devoted to controlling the dynamic behaviors phononic crystals and metamaterials by directly tuning frequency regions and/or widths their inherent band gaps. Here, we report a new class adaptive metamaterial beams with hybrid shunting circuits realize super broadband Lamb-wave gaps at an extreme subwavelength scale. The proposed is made homogeneous host beam on which tunable local resonators consisting shunted piezoelectric stacks proof masses are attached....
Designing lightweight materials and/or structures for broadband low-frequency noise/vibration mitigation is an issue of fundamental importance both practically and theoretically. In this paper, by leveraging the concept frequency-dependent effective stiffness control, we numerically experimentally demonstrate, first time, a self-adaptive metamaterial beam with digital circuit controlled mechanical resonators strong flexural wave attenuation at subwavelength scales. The controllers that are...
Abstract Willis materials exhibit macroscopic cross-coupling between particle velocity and stress as well momentum strain. However, coupling coefficients designed so far are intrinsically coupled, which inhibits their full implementation in structural dynamic applications. This work presents a means to eliminate these limitations by introducing an active scatterer mechanical meta-layer that exploits piezoelectric sensor–actuator pairs controlled digital circuits. We experimentally...
Abstract Increasing sensitivity and signal to noise ratios of conventional wave sensors is an interesting topic in structural health monitoring, medical imaging, aerospace nuclear instrumentation. Here, we report the concept a gradient piezoelectric self-sensing system by integrating shunting circuitry into sensors. By tuning circuit elements properly, both quality quantity flexural measurement data can be significantly increased for new adaptive sensing applications. Through analytical,...
Solids built out of active components have exhibited odd elastic stiffness tensors whose moduli appear in the antisymmetric part and which give rise to non-Hermitian static dynamic phenomena. Here, we present a class metamaterial featured with an mass density tensor asymmetric arises from nonconservative forces. The is realized using metamaterials inner resonators connected by programmable feed-forward control on acceleration forces along two perpendicular directions. produce unbalanced...
The ability to control flexural wave propagation is of fundamental interest in many areas structural engineering and physics. Metamaterials have shown a great potential subwavelength due their inherent local resonance mechanism. In this study, we propose transformation method derive the material properties waveguide implement functionality based on design active elastic metamaterials. numerically demonstrated can not only steer an beam as predicted from but also exhibit various unique...
Research on breaking time-reversal symmetry to realize one-way wave propagation is a growing area in photonic and phononic crystals metamaterials. In this Letter, we present physical realization of an acoustic waveguide with spatiotemporally modulated boundary conditions nonreciprocal transport topological pumping. The inspired by water wheel consists helical tube rotating around slotted at controllable speed. rotation the creates moving for exposed sections constant We experimentally...
An elastic cloak is a coating material that can be applied to an arbitrary inclusion make it indistinguishable from the background medium. Cloaking against disturbances, in particular, has been demonstrated using several designs and gauges. None, however, tolerate coexistence of normal shear stresses due shortage physical realization transformation-invariant materials. Here, we overcome this limitation design fabricate new class polar materials with distribution body torque exhibits...
Wave propagation can be manipulated at a deep subwavelength scale through the locally resonant metamaterial that possesses unusual effective material properties. Hyperlens due to metamaterial's anomalous anisotropy lead superior-resolution imaging. In this paper, single-phase elastic with strongly anisotropic mass density has been designed. The proposed utilizes independently adjustable motions of subwavelength-scale microstructures along two principal directions. High in densities obtained...
Multi-components Traditional Chinese Medicine (TCM) treats various complex diseases (multi-etiologies and multi-symptoms) via herbs interactions to exert curative efficacy with less adverse effects. However, the ancient compatibility theory of formula still remains ambiguous. Presently, this combination principle is dissected through a systems pharmacology study on mechanism action representative TCM formula, Huo-xiang-zheng-qi (HXZQ) prescription, treatment functional dyspepsia (FD),...