Chao Tang

Chao Tang
Tsinghua University | TH · Department of Mechanical Engineering

PhD

About

29
Publications
6,546
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158
Citations

Publications

Publications (29)
Article
Rich and accurate tactile perceptive capability is important for both humans and robots. Soft materials exhibit unique characteristics to construct high‐performance tactile sensors such as high sensitivity and high resistance to overload. In this work, a multiaxis tactile sensor based on a soft anisotropic waveguide that can distinguish normal forc...
Article
In complex systems like aircraft engines and oil refinery machines, pipeline inspection is an essential task for ensuring safety. Here, we proposed a type of smart material–driven pipeline inspection robot (weight, 2.2 grams; length, 47 millimeters; diameter, <10 millimeters) that could fit into pipes with sub-centimeter diameters and different cur...
Article
Full-text available
Minimally invasive surgery (MIS) is emerging as a burgeoning mode of medical treatment and is widely adopted in practical clinical operations. Here, we report a soft manipulator that can actively deform and navigate through a narrow and constrained environment. Stiffness tunability, tremor filtration, and motion scaling capabilities are incorporate...
Article
Dielectric elastomer actuators (DEAs) exhibit a collection of excellent performances to be the next‐generation artificial muscles, yet they suffer from short lifespan and premature breakdown. Self‐clearing of defects from thin, compliant electrodes can potentially solve these problems, yet this process is currently neither observable nor controllab...
Article
Full-text available
Skin-attachable gas sensors provide a next-generation wearable platform for real-time protection of human health by monitoring environmental and physiological chemicals. However, the creation of skin-like wearable gas sensors, possessing high sensitivity, selectivity, stability, and scalability (4S) simultaneously, has been a big challenge. Here, a...
Article
Full-text available
A skin‐attachable chemical sensor showing high sensitivity, selectivity, stability, and even scalability is demonstrated by Ming Liang Jin, Hee‐Tae Jung, Chi Won Ahn, Do Hwan Kim, and co‐workers in article number 2007605, which they term an ionotronic gas‐sensing sticker. Ultimately, the proposed strategy is expected to provide new guidelines for s...
Article
Fluidic Elastomer Actuators (FEAs) provide new opportunities for developing agile, adaptive, and strong mobile robots for field explorations. In this paper, we propose a soft-rigid coupled linear FEA with a bio-comparable energy density of 10.9 J/kg at 50 kPa. This actuator achieves an increased blocked force output (318%), increased energy density...
Article
The small-scale robot using soft materials features extraordinary compliance and a large amount of degree of freedoms, but its nonlinearity in material increases the system complexity for control strategy. In this paper, as inspired by the skiing-sport, a lightweight locomotion robot with a rigid poking pole is designed and driven by an artificial...
Article
Full-text available
The superior ability of soft robotic systems is their good adaptability to complicated external environments without damaging themselves and their surroundings. Dielectric elastomers (DEs) are known as artificial muscles for soft actuations; however, rigid frames are commonly required to sustain the prestretch, highly limiting flexibility designs....
Article
Full-text available
In this cover image, Hualing Chen and co‐workers, article number 1901130, present an underwater robot utilizing the synthesis jet actuation. As inspired by the cephalopod animal, i.e. octopus, the robot employs a soft artificial muscle actuator with specific study on achieving jet propulsion. Two modes of locomotion, swimming beneath the surface by...
Article
Jet propulsion is the main method of locomotion developed by cephalopods to swim through water, either for hunting or escaping from predators. Under this inspiration, diverse underwater robots utilizing jet propulsion‐based locomotion have been studied. This paper presents a cephalopod‐inspired robot based on a dielectric elastomer actuator, utiliz...
Article
In this work, the electromechanical wrinkling of a highly stretched substrate-free dielectric elastic membrane is theoretically and experimentally studied. Considering the hyperelasticity, anisotropy of the bending stiffness, and electromechanical coupled deformation of the dielectric elastic membrane, a general theoretical model for the wrinkling...
Article
Full-text available
Hydrogel is a type of soft smart material and is responsive to stimuli. In the development of actuation in hydrogel, electrical actuation features a fast and universal strategy which is favored in the engineering system. Due to the difficulty in direct electrical actuation in hydrogel, in this study, an indirect actuation was attained via a dielect...
Article
Dielectric elastomers (DEs), as a stimuli-responsive material, have been widely used in soft robots with the advantages of high deformability and adaptability. Since most research on DE has been focus on its quasi-static actuation, its dynamics is under-explored. In this paper, a robotic cube actuated by the resonance of DE is proposed, according t...
Article
Full-text available
A dielectric elastomer (DE) vibrates and resonates mechanically under an alternating voltage and the vibrations undergo a transition from the in-plane to the out-of-plane state. In this study, a phase diagram was established experimentally to illustrate this transition and an electromechanical model was proposed to predict the transition using the...
Conference Paper
Dielectric elastomers are a variety of electroactive polymer that deform due to the electrostatic interaction between two electrodes with opposite electric charge. Dielectric elastomer actuators are recognized as one of the most promising soft actuation technologies that have a widely application in soft robots. In this paper, an ultralight locomot...
Article
Full-text available
The public address (PA) is a part of the passenger information system in an underground subway station. A sample station named Xingzhong Road on metro line 9 in Shanghai is considered in this paper. A ray-tracing model for acoustical simulation of the PA system is established. Verification is performed by comparing the simulated and the measured so...
Article
Full-text available
The oil pump is an important part of vehicle engine, whose noise and vibration characteristics affect the engine performance significantly. The noises generated by both the pressure and flow fluctuations are the main contributors to the oil pump noise. Based on the computational fluid dynamics (CFD) method and the Lighthill’s acoustic analogy (LAA)...
Article
As train speed increases, the aerodynamic noise gradually exceeds the wheel-rail noise and becomes the main noise source of high-speed trains. The aerodynamic noise affects the interior environment of a train in two ways: turbulent wall pressure fluctuation (TWPF) and acoustic wall pressure fluctuation (AWPF). In this paper, a hybrid aerodynamic mo...
Article
The noise of underground subway stations has a great influence on the passengers and workers. The finite-element based software Actran is introduced to analyze the acoustical performance of an underground subway station in this paper. A sample station named Xingzhong Road from metro line 9 in Shanghai is considered. The finite element models for an...

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Project (1)
Project
This project develops a light weight structure, powered by a dielectric elastomer under alternative voltage.