An untethered magnetic- and light-responsive rotary gripper: shedding light on photoresponsive liquid crystal actuators

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Abstract

Here, a remotely controlled dual magneto- and photoresponsive soft robotic gripper is reported, capable of loading, transport, rotation, and release of cargo. The untethered soft actuator consists of a magnetically responsive polydimethylsiloxane layer containing magnetic iron powder coated onto the central region of a light-responsive liquid crystal polymer film hosting photochromic azobenzene dyes. Light is used to trigger the actuator to autonomously grab and pick up cargo with a high degree of control. Magnetic response is employed to conduct the locomotion as magnetic guidance, allowing the gripper to have both translational freedom and rotational freedom in its locomotion, differentiating the device from other soft robotic grippers. Control can be attained even in enclosed and/or confined spaces, through solely remote actuation. Through combined video, mechanical, and thermal analyses, the actuation mechanism of the light-responsive liquid crystal network is investigated, shedding light on the decisive role of the temperature evolution in governing both rate of motion and deformation amplitude of the light-responsive soft actuator.

Original languageEnglish
Article number1801643
Number of pages8
JournalAdvanced Optical Materials
Volume7
Issue number7
DOIs
Publication statusPublished - 4 Apr 2019

Fingerprint

Liquid Crystals
Grippers
Liquid crystals
Actuators
actuators
liquid crystals
cargo
locomotion
robotics
actuation
Robotics
Iron powder
Azobenzene
Liquid crystal polymers
Polydimethylsiloxane
Polymer films
dyes
iron
Coloring Agents
Dyes

Keywords

  • actuators
  • grippers
  • stimuli-responsive materials
  • untethered soft robotics

Cite this

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title = "An untethered magnetic- and light-responsive rotary gripper: shedding light on photoresponsive liquid crystal actuators",
abstract = "Here, a remotely controlled dual magneto- and photoresponsive soft robotic gripper is reported, capable of loading, transport, rotation, and release of cargo. The untethered soft actuator consists of a magnetically responsive polydimethylsiloxane layer containing magnetic iron powder coated onto the central region of a light-responsive liquid crystal polymer film hosting photochromic azobenzene dyes. Light is used to trigger the actuator to autonomously grab and pick up cargo with a high degree of control. Magnetic response is employed to conduct the locomotion as magnetic guidance, allowing the gripper to have both translational freedom and rotational freedom in its locomotion, differentiating the device from other soft robotic grippers. Control can be attained even in enclosed and/or confined spaces, through solely remote actuation. Through combined video, mechanical, and thermal analyses, the actuation mechanism of the light-responsive liquid crystal network is investigated, shedding light on the decisive role of the temperature evolution in governing both rate of motion and deformation amplitude of the light-responsive soft actuator.",
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author = "{Pilz da Cunha}, Marina and Yari Foelen and {van Raak}, {Roel J.H.} and Murphy, {Jeffrey N.} and Engels, {Tom A.P.} and Debije, {Michael G.} and Schenning, {Albert P.H.J.}",
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AU - Pilz da Cunha, Marina

AU - Foelen, Yari

AU - van Raak, Roel J.H.

AU - Murphy, Jeffrey N.

AU - Engels, Tom A.P.

AU - Debije, Michael G.

AU - Schenning, Albert P.H.J.

PY - 2019/4/4

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N2 - Here, a remotely controlled dual magneto- and photoresponsive soft robotic gripper is reported, capable of loading, transport, rotation, and release of cargo. The untethered soft actuator consists of a magnetically responsive polydimethylsiloxane layer containing magnetic iron powder coated onto the central region of a light-responsive liquid crystal polymer film hosting photochromic azobenzene dyes. Light is used to trigger the actuator to autonomously grab and pick up cargo with a high degree of control. Magnetic response is employed to conduct the locomotion as magnetic guidance, allowing the gripper to have both translational freedom and rotational freedom in its locomotion, differentiating the device from other soft robotic grippers. Control can be attained even in enclosed and/or confined spaces, through solely remote actuation. Through combined video, mechanical, and thermal analyses, the actuation mechanism of the light-responsive liquid crystal network is investigated, shedding light on the decisive role of the temperature evolution in governing both rate of motion and deformation amplitude of the light-responsive soft actuator.

AB - Here, a remotely controlled dual magneto- and photoresponsive soft robotic gripper is reported, capable of loading, transport, rotation, and release of cargo. The untethered soft actuator consists of a magnetically responsive polydimethylsiloxane layer containing magnetic iron powder coated onto the central region of a light-responsive liquid crystal polymer film hosting photochromic azobenzene dyes. Light is used to trigger the actuator to autonomously grab and pick up cargo with a high degree of control. Magnetic response is employed to conduct the locomotion as magnetic guidance, allowing the gripper to have both translational freedom and rotational freedom in its locomotion, differentiating the device from other soft robotic grippers. Control can be attained even in enclosed and/or confined spaces, through solely remote actuation. Through combined video, mechanical, and thermal analyses, the actuation mechanism of the light-responsive liquid crystal network is investigated, shedding light on the decisive role of the temperature evolution in governing both rate of motion and deformation amplitude of the light-responsive soft actuator.

KW - actuators

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KW - stimuli-responsive materials

KW - untethered soft robotics

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