The unusual properties of mechanical metamaterials are determined by the configuration artificial periodic structures. However, performance conventional is irreversible and cannot perceive respond to changes in environment. In present study, a zero Poisson's ratio metamaterial with intelligent switching vibration isolation effect proposed. Based on 4D printing method shape memory polymer, this created that can sense temperature switch properties. macroscopic deformation morphology change...

Flexible pressure sensors have attracted a considerable amount of attention in various fields including robotics and healthcare applications, among others. However, it remains significantly challenging to design fabricate flexible capacitive sensor with quite broad linearity detection range due the nonlinear stress-strain relation hyperelastic polymer-based dielectric material. Along these lines, this work, novel microstructured composite layer (MCDL) is demonstrated. The MCDL was prepared...

Abstract Mechanical metamaterials (MMs) exhibit unique properties by manipulating the geometry of individual cells and their overall arrangement into structures. Historically, most MMs are generally fabricated as continuous, anisotropic structures with additive manufacturing, which offers high precision efficiency but is inherently limited process machine constraints. To address this issue, inspired traditional Chinese mortise tenon, a novel construction system for plastically isotropic...

A seaweed-like porous carbon anode, prepared using fish scale as the precursor and K 2 SO 4 auxiliary, achieves high capacities superior stability for KIC.

The graded mechanical properties (e.g., stiffness and stress/strain) of excellular matrix play an important role in guiding cellular alignment, as vital tissue reconstruction with proper functions. Though various methods have been developed to engineer a environment study its effect on behaviors, most them failed distinguish from stress/strain during loading. Here, we construct programmable strain gradients by using hydrogel linear elastic property. When seeding cells such hydrogels,...

Imaging through the scattering medium, such as fog, is important for military and civilian applications. However, fog concentration restricts current defogging methods; image will be seriously degraded in dense scenes. Here, an imaging technique by developing joint active polarization denoising optimization methods based on range-gated detection proposed target conditions. The method shields light from outside selected region to improve signal intensity. properties of light, backscattering...

Dielectric elastomer (DE) is a soft material that can deform to large degree under the action of an electric field. In this paper, multilayer DE films were stacked in parallel prepare 20-layer dielectric actuator (DEA). This DEA could provide peak output force 30 N, which significantly improves driving performance and provides conditions for load DEA. As new method, was applied jumping robot, heavy-weight robot accomplished motion after several cycles energy storage.

Mechanical metamaterials with multi-level dynamic crushing effects (MM-MLs) are designed in this study through coordinate transformation and mirror arrays. The mechanical of the diameter length ratio struts connecting rods, Euler angles, cell numbers on properties investigated separately. MM-ML can exhibit significant two-level platform stress, local cells first stress stage undergo rotational motion, while second mainly involves collapse compression bending. Although increasing rods...

The image quality would be significantly degraded due to light scattering for the foggy scenes, and imaging effect of existing defogging method is limited insufficiency estimation accuracy on transmittance. To address this, paper proposes an reconstruction based active range-gated mechanism by fusing two kinds fusion strategy weight allocation optimal selection developed through experimentally characterizing actual transmittances. weights depending fog density derived, achieving accurate...

The image quality would be significantly degraded due to light scattering for the foggy scenes, and imaging effect of existing defogging method is limited insufficiency estimation accuracy on transmittance. To address this, paper proposes an reconstruction based active range-gated mechanism by fusing two kinds fusion strategy weight allocation optimal selection developed through experimentally characterizing actual transmittances. weights depending fog density derived, achieving accurate...

A novel ultralight superhydrophobic-superoleophilic hybrid Carbon Nanotubes (CNTs) film with double-layer structures is fabricated by using vacuum filtration method. The CNTs can separate various surfactant-stabilized water-in-oil emulsions a separation efficiency higher than 99.3%. Moreover, the films be regenerated through simple and rapid combustion process within 2 s. In addition, still retains good hydrophobic properties under conditions of physical abrasion, strong acidic alkaline...

Flexible pressure sensors have attracted significant attention in both academic and industrial fields. However, how to design fabricate a flexible sensor having high sensitivity good linearity wide detection range is still challenge. To address this challenge, article proposes piezoresistive with multilayer structure consisting of microstructured composite layers (MCLs), which are sandwiched by indium tin oxide-polyethylene terephthalate electrodes encapsulated an ultrasoft elastomer frame....

Current range-gated imaging methods based on triangular or trapezoidal models face significant limitations in terms of the accuracy and precision three-dimensional (3D) reconstruction. Here, we establish a 3D super-resolution image reconstruction method Gaussian-range-intensity model. A denoised optimization for preprocessing is established to improve distance The experimental results show that model can reduce error target by 64% possess multiple kinds targets with resolution 1.5 cm lower...

We report a symmetric design strategy to reduce the number of required DNA component strands in 3D self-assembly and have demonstrated this by construction series nanoprisms out only two strands.

The inverted perovskite solar cells (PSCs) are gaining increasing attention recently for their unprecedented advantages, such as better integration with tandem and flexible designs, negligible hysteresis, good operational stability, compatibility commercially scalable fabrication approaches. Nickel oxide (NiOx) films prepared by magnetron sputtering technology exhibit excellent scalability reproducibility, which could well meet the requirements of large-scale production PSCs. However, NiOx...

Printed active composites (PACs) are capable of deforming from an initial shape to a target via spatial arrangements materials within passive matrix. Multi-material polymer printers allow precise placement multiple in the design space. However, single material is difficult satisfy demand high-precision matching more complex shape. Hence, multi-material topology optimization approach for PACs proposed achieve under given stimulus. A interpolation function established, and continuum mechanics...

A chemomechanical theory is proposed to describe the dynamic behavior and response time of ionic gels. The large deformation these gels accompanied by migration mobile ions driven a common non-equilibrium chemical reaction. theoretical model was validated using existing experimental data. Further investigations showed that an gel are dependent on concentration reactive non-reactive ions, exposure external stimuli, initial state density ionizable groups polymer chains.

Nano‐structured anodic alumina membranes are ideal templates and have wide applications. However, materials begin to curl up at high temperatures. To better understand overcome this problem, the thermal stability of was investigated. Anodic obtained in oxalic acid electrolyte were heat treated air different annealing temperatures 1200 °C. Our results show that sub‐pores produced during process responsible for curling. The repulsive forces between neighboring pores caused by mechanical stress...

Gaining direct tactile sensation is becoming increasingly important for humans in human–computer interaction fields such as space robot teleoperation and augmented reality (AR). In this study, a novel electro-hydraulic soft actuator was designed manufactured. The proposed composed of polydimethylsiloxane (PDMS) films, flexible electrodes, an insulating liquid dielectric. influence two different voltage loading methods on the output characteristics studied. special method (AC voltage) enables...