Actuators: Electrically and Sunlight‐Driven Actuator with Versatile Biomimetic Motions Based on Rolled Carbon Nanotube Bilayer Composite (Adv. Funct. Mater. 44/2017)

Hu, Ying; Liu, Jiaqin; Chang, Longfei; Yang, Lulu; Ao, Xu; Qi, Ke; Lü, Ping; Wu, Guan; Chen, Wei; Wu, Yucheng

doi:10.1002/adfm.201770265

Cited by 39 publications

(66 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The unique characteristics of oscillation as well as its potential for various applications (e.g., soft robots for walking or swimming, self‐cleaning surfaces, and energy coupling) inspire us to devise novel types of artificial self‐oscillating actuators with self‐sustained autonomous motion under a constant environment 3–8. However, at present, most of the smart actuators for converting external environmental stimuli into mechanical deformation can only produce unsustainable single motion under constant stimulation, which lacks the autonomy compared with self‐oscillation in nature 9–19. To realize repeated and continuous autonomous motion, the control devices and systems for dynamically regulating the variation or on‐off switching of the external stimuli are commonly required 20–27.…”

Section: Introductionmentioning

confidence: 99%

An Autonomous Soft Actuator with Light‐Driven Self‐Sustained Wavelike Oscillation for Phototactic Self‐Locomotion and Power Generation

Yang

Chang

et al. 2020

Adv Funct Materials

Self Cite

119

View full text Add to dashboard Cite

Mimicking the intelligence of biological organisms in artificial systems to design smart actuators that act autonomously in response to constant environmental stimuli is crucial to the construction of intelligent biomimetic robots and devices, but remains a great challenge. Here, a light-driven autonomous carbon-nanotube-based bimorph actuator is developed through an elaborate structural design. This curled droplet-shaped actuator can be simply driven by constant white light irradiation, self-propelled by a lightmechanical negative feedback loop created by light-driven actuation, time delay in the photothermal response along the actuator, and good elasticity from the curled structure, performing a continuously self-oscillating motion in a wavelike fashion, which mimics the human sit-up motion. Moreover, this autonomous self-oscillating motion can be further tuned by controlling the intensity and direction of the incident light. The autonomous actuator with continuous wavelike oscillating motion shows immense potential in light-driven biomimetic soft robots and optical-energy-harvesting devices. Furthermore, a self-locomotive artificial snake with phototaxis is constructed, which autonomously and continuously crawls toward the light source in a wave-propagating manner under constant light irradiation. This snake can be placed on a substrate made of triboelectric materials to realize continuous electric output when exposed to constant light illumination.

show abstract

Section: Introductionmentioning

confidence: 99%

An Autonomous Soft Actuator with Light‐Driven Self‐Sustained Wavelike Oscillation for Phototactic Self‐Locomotion and Power Generation

Yang

Chang

et al. 2020

Adv Funct Materials

Self Cite

119

View full text Add to dashboard Cite

show abstract

“…The interest stems from novel possibilities to design and fabricate soft devices with miniaturize sizes and ever‐more‐complex functions . Among the wealth of stimuli‐responsive materials, carbon‐based bilayers, liquid crystal elastomers and polymer networks (LCNs), hydrogels, and magnet‐doped rubbers stand out as prominent candidates for soft microrobotics. The devices composed of these materials adopt novel control strategies, shifting from conventional wire‐connections (electrically or via pneumatic tubes) to a wireless approach relying on external energy sources such as magnetic fields, light fields, humidity, or chemical reactions .…”

mentioning

confidence: 99%

“…Kirigami serves as an alternative platform for obtaining 3D shape‐morphing, with the help of applying an external force (stress field), when the material is not actuated. The kirigami method provides good controllability of the 3D shape‐morphing through applying forces, while the principle can be easily extended to other film‐like actuators such as carbon bilayers, shape‐memory alloys, etc. Figure S11 (Supporting Information) shows kirigami patterns inscribed on a polymer–aluminum bilayer actuator and their thermal actuation behavior, indicating that the presented concept can be generalized to different types of stimuli‐responsive materials.…”

mentioning

confidence: 99%

Kirigami‐Based Light‐Induced Shape‐Morphing and Locomotion

et al. 2019

View full text Add to dashboard Cite

The development of stimuli‐responsive soft actuators, a task largely undertaken by material scientists, has become a major driving force in pushing the frontiers of microrobotics. Devices made of soft active materials are oftentimes small in size, remotely and wirelessly powered/controlled, and capable of adapting themselves to unexpected hurdles. However, nowadays most soft microscale robots are rather simple in terms of design and architecture, and it remains a challenge to create complex 3D soft robots with stimuli‐responsive properties. Here, it is suggested that kirigami‐based techniques can be useful for fabricating complex 3D robotic structures that can be activated with light. External stress fields introduce out‐of‐plane deformation of kirigami film actuators made of liquid crystal networks. Such 2D‐to‐3D structural transformations can give rise to mechanical actuation upon light illumination, thus allowing the realization of kirigami‐based light‐fuelled robotics. A kirigami rolling robot is demonstrated, where a light beam controls the multigait motion and steers the moving direction in 2D. The device is able to navigate along different routes and moves up a ramp with a slope of 6°. The results demonstrate a facile technique to realize complex and flexible 3D structures with light‐activated robotic functions.

show abstract

“…As shown in Figure a, a PTL/rGO@PE bilayer strip with a size of 40 mm × 5 mm is fixed at one end, and irradiated under NIR laser (980 nm, 10 W output power) from the PE side at a comparable laser intensity to those commonly utilized in the literatures (132 mW cm −2 at 3 cm, 64.1 mW cm −2 at 5 cm, and 20.2 mW cm −2 at 10 cm) (Figure S18, Supporting Information). [ 6,18,61,62,65 ] At 3 cm in distance, the strip bends almost 110° toward the PTL/rGO side in 2.5 s and then recovers to the original state in 9 s once the NIR laser is turned off (Figure 6a,b). The photothermal conversion and the surface light energy distribution of the PTL/rGO@PE bilayer film irradiated by the laser at different distances are preliminarily characterized by the IR camera.…”

Section: Resultsmentioning

confidence: 99%

Controlling Long‐Distance Photoactuation with Protein Additives

Zhao

Miao

et al. 2020

Small

View full text Add to dashboard Cite

Long-distance wireless actuation indicates precise remote control over materials, sensors, and devices that are widely utilized in biomedical, defence, disaster relief, deep ocean, and outer space applications to replace human work. Unlike radio frequency (RF) control, which has low tolerance toward electromagnetic interference (EMI), light control represents a promising method to overcome EMI. Nonetheless, long-distance lightcontrolled wireless actuation able to compete with RF control has not been achieved until now due to the lack of highly light-sensitive actuator designs. Here, it is demonstrate that amyloid-like protein aggregates can organize photomodule single-layer reduced graphene oxide (rGO) into a well-defined multilayer stack to display long-distance photoactuation. The amyloid-like proteinaceous component docks the rGO layers together to form a hybrid film, which can reliably adhere onto various material surfaces with robust interfacial adhesion. The sensitive photothermal effect and a fast bending in 1 s to switch a circuit are achieved after forming the film on a plastic substrate and irradiating the bilayer film with a blue laser from 100 m away. A photoactuation distance of 50 km can be further extrapolated based on a commercial high-power laser. This study reveals the great potential of amyloid-like aggregates in remote light control of robots and devices.

show abstract

Actuators: Electrically and Sunlight‐Driven Actuator with Versatile Biomimetic Motions Based on Rolled Carbon Nanotube Bilayer Composite (Adv. Funct. Mater. 44/2017)

Cited by 39 publications

References 0 publications

An Autonomous Soft Actuator with Light‐Driven Self‐Sustained Wavelike Oscillation for Phototactic Self‐Locomotion and Power Generation

An Autonomous Soft Actuator with Light‐Driven Self‐Sustained Wavelike Oscillation for Phototactic Self‐Locomotion and Power Generation

Kirigami‐Based Light‐Induced Shape‐Morphing and Locomotion

Controlling Long‐Distance Photoactuation with Protein Additives

Contact Info

Product

Resources

About