Active materials possess unique properties of being able to respond autonomously external stimuli, yet realizing and regulating the motion behavior active machines remains a major challenge. Conventional control approaches, including sensor device control, are both complex difficult implement. In contrast, materials--based self-oscillators offer distinct such as periodic ease regulation. Inspired by paddle boats, we have proposed conceptual light-fueled self-paddling boat with photothermally...

Self-oscillating systems possess the ability to convert ambient energy directly into mechanical work, and new types of self-oscillating are worth designing for practical applications in harvesters, engines actuators. Taking inspiration from four-stroke engine. A concept a self-rotating engine is presented on basis photothermally responsive materials, consisting liquid crystal elastomer (LCE) fiber, hinge turnplate, which can self-rotate under steady illumination. Based...

Self-oscillatory systems have great utility in energy harvesting, engines, and actuators due to their ability convert ambient directly into mechanical work. This characteristic makes design implementation highly valuable. Due the complexity of motion process simultaneous influence multiple parameters, computing self-oscillatory proves be challenging, especially when conducting inverse parameter design. To simplify computational process, a combined approach o0f Random Forest (RF)...

Self-oscillation absorbs energy from a steady environment to maintain its own continuous motion, eliminating the need carry power supply and controller, which will make system more lightweight promising for applications in harvesting, soft robotics, microdevices. In this paper, we present self-oscillating curling liquid crystal elastomer (LCE) beam-mass system, is placed on table can self-oscillate under light. Unlike other self-sustaining systems, contact surface of LCE beam with tabletop...

Self-sustained oscillations can directly absorb energy from the constant environment to maintain its periodic motion by self-regulating. As a classical mechanical instability phenomenon, Euler compression rod rapidly release elastic strain and undergo large displacement during buckling. In addition, boundary configuration is usually easy be modulated. this paper, we develop self-sustained buckling system based on optically responsive liquid crystal elastomer (LCE) with different constraints....

Self-sustained chaotic system has the capability to maintain its own motion through directly absorbing energy from steady external environment, showing extensive application potential in harvesters, self-cleaning, biomimetic robots, encrypted communication and other fields. In this paper, a novel light-powered self-floating is proposed by virtue of nonlinear spring liquid crystal elastomer (LCE) balloon, which capable under illumination due self-beating. The corresponding theoretical model...

The active material of liquid crystal elastomer (LCE) is capable harvesting energy directly from the surroundings and sustaining continuous motion in presence light heat. It extensively employed machinery, soft robotics, biomedicine, other fields. To date, there barely any research on sustained chaotic system LCE pendulum. main objective this paper to put forward a simple pendulum comprising photosensitive LCE. In accordance with dynamic model, nonlinear model established, its behavior...

The achievement and control of desired motions in active machines often involves precise manipulation artificial muscles a distributed sequential manner, which poses significant challenges. A novel motion strategy based on self-oscillation offers distinctive benefits, such as direct energy harvesting from the ambient environment elimination complex controllers. Drawing inspiration automobiles, self-moving automobile designed for operation under steady illumination is developed, comprising...

The bond between carbon-fiber-reinforced polymer (CFRP) and steel is crucial for strengthening of structures using CFRP materials. However, existing studies on this issue are still limited. To better understand the behavior CFRP-to-steel bonded interfaces, paper reports an experimental study plate-to-steel joints with a nonlinear adhesive by single-shear testing method. three-dimensional digital image correlation (3D-DIC) technique was used to measure displacements strains specimens. effects...

The synchronization and group behaviors of self-excited coupled oscillators are common in nature deserve to be explored, for motions have the advantages actively collecting energy from environment, being autonomous, making equipment portable, so on. Based on light-powered composed liquid crystal elastomer (LCE) bars, two is theoretically studied. Numerical calculations show that oscillations system modes, in-phase mode anti-phase mode, which mainly determined by their interaction. time...