NanoRobotic Structures with Embedded Actuation via Ion Induced Folding

Area of Science:

• Materials Science
• Nanotechnology
• Robotics

Background:

• Four-dimensional (4D) structures possess time-varying capabilities, offering advanced design and actuation possibilities.
• Miniaturizing 4D structures below 100 μm presents significant opportunities across various fields, including medicine and nanorobotics.
• Existing manufacturing methods require innovation for producing dynamic 4D structures at the microscale.

Purpose of the Study:

• To propose and demonstrate a novel fabrication method for dynamic 4D structures.
• To enable precise, programmable folding of microscale multilayer structures.
• To apply this method for creating functional nanorobotic components.

Main Methods:

• Fabrication of planar multilayer structures (SiO2/Cr/Al) using batch microfabrication.
• Ion-induced folding to achieve programmable bidirectional folding (-70° to +90°).
• Integration of electrothermal actuation for dynamic control of folded structures.

Main Results:

• Successful modeling and experimental demonstration of ion-induced folding for SiO2/Cr/Al multilayers.
• Creation of controllable, dynamic 4D nanorobotic structures with embedded actuation.
• Demonstration of a high-performance nano-gripper capable of nanoscale gripping tasks.

Conclusions:

• The proposed ion-induced folding method is effective for fabricating small-scale 4D systems.
• This technique is suitable for nanorobotics, medical devices, and tunable metamaterials.
• The method facilitates rapid folding and enhanced dynamic control for microscale 4D applications.